Infinity 1.2s Speaker User Manual
Contents
1. After performing these adjustments you may skip forward to the Final System Balance section It is recommended that you perform a second measurement to confirm that the settings are correct QD If you are going to retest the system after EQ adjustments repeat the Setting the Subwoofer Test Level section on p 11 8 Retesting the system will go much faster if you use Tracks 27 50 These tracks contain all the same test tones you just used However each tone plays for only a few seconds and there is no frequency announcement If you are uncomfortable operating at this pace you may of course perform measure ments with the original test tracks Your first interpretation of the data and choice of settings may not be optimum You can repeat the test adjust test cycle as often as needed to get the desired results do this return to page 11 Setting the Subwoofer Test Level You may prefer to retest using the same template Doing so makes it easy to evaluate the improvement When you are satisfied with the results go to Final System Balance Final System Balance Cue Track 51 of the 0 5 Test CD Press Play Increase the system volume until the RSLM indicates 10dB Now play Track 52 Adjust the subwoofer gain control until 10dB is indicated on the RSLM Of course you may fine tune the subwoofer gai2. AC Cord Input Power Switch Speaker Level Inputs Speaker Level Outputs High Level High Pass Filter Switch Q Low Level Input Connectors Low Level Output Connectors Q Phase Switch Q Low Pass Filter Switch Variable Low Pass Filter Adjustment INTERMEZZO 1 25 onfinity INTERMEZZO 1 2s 9 OO Em H 0 180 ON LOW LOW PHASE LEVEL LEVEL INPUT OUTPUT OFF LOW PASS LOW PASS FILTER FILTER De HIGH LEVEL HIGH PASS Subwoofer Level Control R A B O S Controls Center Frequency Adjustment 0 5 Level QD Bandwidth Adjustment The Infinity Intermezzo 1 25 offers unprecedented flexibility for connecting the system to any type of audio or home theater system Consult the table at right to determine which system description most closely matches your own then follow the hook up method corresponding to that system If none of these system configurations seem to match yours consult your dealer or Infinity customer service for direction on how best to hook up your system For Methods 2 3a 3b and 4 make sure all bass management features are properly set The Audio channels should all be set to Small High Pass and the subwoofer set to On BLACK 1 LOOSEN TERMINALS 2 INSERT BARE END TIGHTEN TERMINALS 3 SET LOW PASS FILT
3. o Infinity Owner s Guide CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING SHOCK HAZARD DO NOT OPEN AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CUIDADO PELIGRO DE CHOQUE ELECTRICO NO ABRIR CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER 0R BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL THIS INFINITY PRODUCT ISDESIGNED FOR 120 VOLT USE ONLY FOR DETAILED SAFETY PRECAUTIONS PLEASE SEE FOLLOWING PAGE IN THIS OWNER S MANUAL FOR IMPORTANT SAFETY INSTRUCTIONS pp Do DS INTERMEZZO 1 25 lightning flash with arrowhead symbol within equilateral triangle intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the product L clair avec le symbole de la fl che plac dans les limites d un triangel quilat ral est pr vu pour avertir l utilisateur de la pr sence de tension dangereuse non isol e dans l enceinte du produit qui pourrait amp re d une importance suffisante pour pr senter un risque d ectrocution aux personnes Le point d exclamation dans un triangel quilateral est pr vu pour
4. position Note The Level Control on the front panel will turn green when the power is on Once you have confirmed that the subwoofer is active proceed by playing a CD record or cassette Use a selection that has ample bass information Set the overall volume control of the preamplifier or stereo to a comfortable level Adjust the subwoofer s Level Control until you obtain a pleasing blend of bass Bass response should not overpower the room but rather be adjusted so there is a harmonious blend across the entire musical range Many users have a tendency to set the subwoofer volume too loud adhering to the belief that a subwoofer is there to produce lots of bass This is not entirely true A subwoofer is there to enhance bass extending the response of the entire system so the bass can be felt as well as heard However overall balance must be maintained or the music will not sound natural An experienced listener will set the volume of the subwoofer so its impact on bass response is always there but never obtrusive INTERMEZZO 1 25 Crossover Adjustments If you are using Method 1 as your connection method you need to set the High Level High Pass Filter to On Off When on this adjustment limits the low frequencies that your main speakers will reproduce If you would like your main speakers to also reproduce frequencies below 80Hz you may set this switch to Off If you are using speakers that do not reproduce lo
5. locate the source and eliminate its effects This is actually a valuable room diagnostic tool Press Play We As Track 3 plays watch the RSLM carefully Watch for peak readings The peak reading may be no more than a brief flash Readjust the subwoofer s gain control until the peak level observed is 0dB without triggering the over range indication See Figure 6 Adjusting the subwoofer levels for a 0dB peak ima Correct fog high When finished press Pause II Performing Low Frequency Measurements 9 Read the following instructions fully before beginning tests For the following steps you will need a Measurement Template and a pencil R A B 0 S Measurement Template RAB OS Temple m x ood y Hr Lever ag INTERMEZZO 1 25 Each of the following tracks produces low frequency test tone The range of these tests is from 100Hz down to 20Hz The frequency of each test is announced before it begins The first test is the highest frequency 100 2 therefore you will be marking the template from right to left Each frequency point is listed across the bottom of the Measurement Template this is called the X axis See Figure 7 on the previous page The vertical scale on the left side of the template indicates relative level in dBs the Y axis The template s vertical scale matches that of the RSLM bar graph Cue Track 4
6. 850 watts continuous In to 8Q from 20Hz 100Hz 2 600 watts peak with no more than 0 1 THD 2nd and 3rd Order Harmonic Distortion lt 1 20Hz 130 2 9598 SPL Crossover Frequencies 50Hz 130Hz Continuously Variable 24dB Octave Dimensions 15 1 4 x 18 1 4 x 13 3 4 HxWxD 387mm x 464mm x 349mm Weight 60 Ib 27 3 kg Infinity continually strives to update and improve existing products as well as create new ones The specifications and construction details in this and related Infinity publications are therefore subject to change without notice INTERMEZZO 1 25 5 Measurement Template cas A 3 4 T 1 12 14 Laval 15 20 21 22 24 26 aa 35 3540 43 46 4952 58 77BD B5 60 95 Frequency Frequency Level dB W idth 90 R A B O S Measurement Template ee buh he 14 Level 15 202122 24 3 35 43 40 52 58 8388 72 77BD B5 BO 95 100 Frequency Frequency Hz Level dB W idth INTERMEZZO 1 25 al d do d d k x R A B O S Measurement Template 912122 24 Frequency j 31 Hz 35 38 40 43 46 52 58 Freauancy Level RABOS Measurement Template 20 2122 24 26 Frequency J Hz 34 38 40 43 45 2352 86 Frequency Level dB 55 7780 85 BD 95 W idth 66 72 7BD 88 BO 35 100 W idth 90 INTERMEZZO 1 2
7. avertir l utilisateur de la pr sence d instructions importantes pour les op rations et l entretien service dans les manuels fournis avec l appareil ATTENTION POUR EVITER LES CHOCS ELECTRIQUES INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQUAU FOND Este destello luminoso con un s mbolo de punta de flecha dentro de un tri ngulo equil tero tiene el objectivo de alertar al usuario sobre la presencia de voltaje peligroso no aislado dentro de la caja del producto que puede ser de magnitud lo suficientemente grande para constituir un riesgo de choque el ctrico para las personas Este punto de exclamaci n dentro de un tri ngulo equil tero tiene el objectivo de alertar al usuario sobre la existencia de instrucciones operativas y de mantenimiento servicio importantes en la literatura que acoma a aparato CUIDADO PARA REDUCIR EL RIESGO DE CHOQUE EL CTRICO NO RETIRE LA CUBIERTA 0 RESPALDO DENTRO NO HAY PEIZAS A LAS QUE EL USUARIO PUEDE DAR SERVICIO REMITA EL SERVICIO AL PERSONAL DE SERVICIO CALIFICADO IMPORTANT SAFETY PRECAUTIONS Read First CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to perso
8. frequency is 40Hz and the best fit width is 10 Fill in the Width and Frequency fields provided on the template Determine the appropriate level using the technique described earlier In this example 13dB is indicated Enter 13 in the field provided Skip to the Adjusting the R A B 0 S Equalizer section on page 18 Example 5 One or More Narrow Dips Example of two narrow dips DAT 20 FI EF Hagana Response dips occur at any frequency sometimes immediately adjacent to the peak you want to correct In this example there are two such dips on either side of the peak Deep response dips such as these are caused by destructive wave interference Destructive interference dips occur only in one spot within the room It is not uncommon to completely eliminate their effect by moving the RSLM to a different location Note that this does not eliminate the dips We have simply moved away from them Sometimes only a few inches are required Do not attempt to correct this condition with equalization If you encounter dips like this take the following steps INTERMEZZO 1 25 1 Select a new test position Cue the test track corresponding to the center frequency of the dip In the example in Figure 20 you would play Tracks 14 52Hz and 18 40Hz Press Play You will see a reading very close to what you had before Now slowly move the RSLM around the area if possible remaining
9. most residential sound rooms share many characteristics and their dimensions fall into a range that make some response irregularities far more likely than others On the following pages are examples of what you may encounter Following each example is a strategy for correction Compare your measurement results with the following examples Find the one that best fits your graph and follow the instructions presented for that scenario B Remember when looking for match look at the descriptive characteristics not any specific frequency or level Each of these examples can occur at any frequency bandwidth and level It is unlikely that your test results will be exactly as depicted in these examples Example 1 Single Dominant Peak FIGURE 16 Single dominant peak MT RDD amam FI TTAN sm Fiszkarzy This is the most common result of speaker room interaction Apply the Width Selector as described in Figure 14 Align the center line of the Selector over the center of the peak as shown in Figure 15 Now adjust the Selector until you have achieved best fit The slider now points to the correct bandwidth setting In this example the frequency is 43Hz and the best fit width is 12 5 Fill in the Width and Frequency fields provided on the template Determine the appropriate level using the technique described earlier In this example 9dB would be best Enter the lev
10. that may be barely perceptible but which can wreak havoc on low frequency measurements Critical information is highlighted with this mark Helpful hints are marked with this symbol 8 INTERMEZZO 125 9 Contents of the R A B O S Test CD Track Title Track Title 1 Welcome 32 Quick Retest 80Hz 2 Set System Test Level 33 Quick Retest 77 Hz 3 Set Subwoofer Test Level 34 Quick Retest 72Hz 4 100Hz Test 35 Quick Retest 66Hz 5 95HzTest 36 Quick Retest 63Hz 6 90Hz Tes 37 Quick Retest 56Hz 7 85Hz Test 38 Quick Retest 52Hz 8 80Hz Tes 39 Quick Retest 49Hz 9 T1Hz Test 40 Quick Retest 46Hz 10 T2HzTes 41 Quick Retest 43Hz 11 66Hz Test 42 Quick Retest 40Hz 12 63Hz Tes 43 Quick Retest 38Hz 13 56Hz Test 44 Quick Retest 35Hz 14 52Hz Tes 45 Quick Retest 30Hz 15 49Hz Test 46 Quick Retest 26Hz 16 46Hz Tes 47 Quick Retest 24 17 43HzTest 48 Quick Retest 22Hz 18 40HzTes 49 Quick Retest 21Hz 19 38Hz Test 50 Quick Retest 20Hz 20 35HzTesi 51 Final System Level Adjustment 21 30Hz Test 52 Final Subwoofer Level Adjustment 22 26HzTes 52 Wide Band Pink Noise Left 23 24Hz Test 54 Wide Band Pink Noise L R 24 22 2 55 Wide Pink Noise Right 25 21HzTest 56 Wide Band Pink Noise L R 26 20Hz Tes 5 Wide Band Pink Noise Uncorrelated 21 Intro to Quick Retest 58 1 to 4kHz Pink Noise Left 28 Quick Retest 100Hz 59 1 to 4kHz Pink Noise L R 29 Quick Retest 95Hz 60 1 to 4kHz Pink Noise Right
11. to the Adjusting the R A B 0 S Equalizer section on page 18 INTERMEZZO 1 2s Response dips can occur at any frequency sometimes immediately adjacent to the peak you want to correct Two examples are shown one immediately above and one immediately below the peak Deep response dips such as these are caused by destructive wave interference Destructive interference dips occur only in one spot within the room It is not uncommon to completely eliminate the effect by moving the RSLM to a different location Note that this does not eliminate the dips We have simply moved away from them Sometimes only a few inches are required Do not attempt to correct this condition with equalization If you encounter dips like this take the following steps 1 Select a new test position Cue the test track corresponding to the center frequency of the dip In the first example in Figure 18 you would playTrack 13 56Hz Press Play We You will see a reading very close to what you had before Now slowly move the RSLM around the area if possible remaining within about a foot of the original test point As you move the RSLM watch the bar graph You will observe large level fluctuations Find a position that restores the level to approximately that of the adjacent test points You may find it helpful to move the RSLM vertically Dips be oriented in any axis The position that restores the level to about that of the adjacent test points i
12. within about a foot of the original test point As you move the RSLM watch the bar graph You will observe large level fluctuations Find a location for the subwoofer or a test location that raises the response at these frequencies You may find it helpful to move the RSLM vertically Dips can be oriented in any axis The position that restores the level to about that of the adjacent test points is your new test position 2 Reset the test level Return to the section Setting the Subwoofer Test Level on page 11 Perform the procedure as described 3 Repeat the measurements Now that you are familiar with the measurement process you can go much faster by using Tracks 27 50 These tracks contain all the test tones necessary for measurement However each test is only about three seconds and there is no frequency announcement The first test is 100Hz J ust place each test mark in order until finished Connect the dots Your second measurement will no longer exhibit the deep response dips However the peak will still be evident Without the influence of the response dips the amplitude and center of the peak may have changed 4 Interpret the new data Compare your new data to the examples given in this section of the manual Follow the instructions for the example that most closely matches your new measurement Example 6 Ideal Response Ideal response no EQ needed INTERMEZZO 1 2s If your test data looks similar
13. 30 Quick Retest 90Hz 61 1 to 4kHz Pink Noise Left R 31 Quick Retest 85Hz 62 1 to 4kHz Pink Noise Uncorrelated Tracks 53 62 of the R A B 0 S Test CD are test tones that can be used for general diagnostics of your system They are not used for RAB OS settings THE 0 5 SOUND LEVEL METER RSLM The RSLM is a battery operated handheld acoustic measurement device specifically designed for Infinity R A B 0 S On the face of the instrument is a light emitting diode LED bar graph that indicates relative sound level There are also indicators for power on out of range signals and a low battery 0 5 Sound Level Meter Svinfinity INTERMEZZO 1 25 Power is switched on or off by pressing the button directly below the bar graph window When the unit is on one or more LEDs will always be illuminated The function of the LEDs is described in the following section RSLM bar graph indications On Measurement Over range Low Under range Battery Power On Low Signal This is indicated by the illumination of any LED on the bar graph If the sound level in the room is below the measurement range of the instrument a green LED near the bottom of the bar graph will be illuminated Normal Measurements When the sound level is within the range of the RSLM the green LED will be off and one of the red LEDs in the bar graph will be illuminated indicating the relative sound level in decibels
14. 5 Qo Infinity A Harman International Company 2000 Infinity Systems Inc 250 Crossways Park Drive Woodbury NY 11797 USA 800 553 3332 USA Only www infinitysystems com Trademarks of Dolby Laboratories BASH is a registered trademark of Indigo Corporation THX is a registered trademark of Lucasfilm Ltd DTS is a registered trademark of Digital Theater Systems Inc Infinity is a registered trademark of Infinity Systems Inc Printed in USA 4 00 Part No 336204 001
15. 50V So 0 0 rien LOW LOW PHASE LOW PASS LOW PASS FILTER LEVEL LEVEL FILTER FILTER ZN CAUTION INPUT OUTPUT ONE CHANNEL SHOWN RECEIVER SUBWOOFER SPEAKER OUTPUTS OUTPUTS TO MAIN SPEAKERS i 5 SET LOW PASS FILTER TO ON POWER L INTERMEZZO 1 25 GO AC FUSE INPUTS OUTPUTS ON 0 10 ON OFF 120V 26 6A 250V QW Lou PHASE LOW PASS LOW PASS _ FILTER LEVEL LEVEL FILTER FILTER CAUTION INPUT OUTPUT INTERMEZZO 1 25 OPERATION Power On Plug your subwoofer s AC cord into a wall outlet Do not use the outlets on the back of the receiver Initially set the subwoofer s Level Control to the O position Turn on your sub by pressing the power button on the rear panel Turn on your entire audio system and start a CD or movie sound track at a moderate level Adjust Gain Turn your subwoofer s Level Control up to the 5 position half way If no sound emanates from the subwoofer check the AC line cord and input cables Are the connectors on the cables making proper contact Is the AC plug connected to live receptacle Has the power button been pressed to the On
16. 810 21 Electric Service Equipment Ground Clamps Power Service Grounding Electrode System NEC Art 250 Part H INTERMEZZO 1 25 INTERMEZZO 1 25 OwNER S GUIDE Table of Contents INTERMEZZO 1 25 Caution Important Safety Precautions Technology Ceramic Metal Matrix Diaphragms C M M D Room Friendly Acoustical Design Unpacking the Product Included Accessories Placement Controls and Connections Connection Methods 1 4 Operation Room Adaptive Bass Optimization System R A B 0 S Contents of the R A B 0 S Test CD 0 5 Sound Level Meter RSLM What You Measure What To Do Adjusting the R A B O S Equalizer Final System Balance Maintenance and Service Specifications R A B 0 S Measurement Templates Intermezzo Series loudspeakers incorporate several innovative technologies that when implemented by exceptional engineering talent after hours upon hours of subjective listening evaluations resultin a loudspeaker that realistically and accurately reproduces the signal source with minimal distortion and coloration Ceramic Metal Matrix Diaphragms C M M D For decades loudspeaker engineers have known that the ideal transducer should be stiff yet light and have high internal damping damping is a material s ability to absorb energy Infinitys C M M D transducer is a significant advance in transducer technology Ceramic a class of material new to loudspeakers offers better performance than th
17. ER TO ON NO STRIPE 4 SET HIGH PASS SWITCH TO ON OR OFF SEE P 8 E XE System Connection Methods 2 Channel receiver or integrated amplifier that has no subwoofer output or Pre out Main In connectors 1 2 Channel receiver or integrated amplifier with preamp output and input connectors 2 2 Channel system with separate preamplifier and power amplifier 2 Dolby Pro Logic with THX Dolby Digital or DTS receiver with a filtered subwoofer or LFE output connector 3a Dolby Digital or DTS processor with separate power amplifiers or multichannel amplifier 3b Non THX certified Dolby Pro Logic receiver with full range subwoofer outputs 4 ONE CHANNEL SHOWN AMPLIFIER RECEIVER LEFT SPEAKER RIGHT OUTPUTS POWER 4 Infinity INTERMEZZO 1 25 INP OUTPUTS ON OFF 0 180 ON OFF v 120v brze 6A 250V O JS e o ms P EN PUES Npur RIGHT SPEAKER INTERMEZZO 1 25 SET LOW PASS FILTER TO ON POWE
18. R Tob L N Vinfinity INTERMEZZO 1 25 OO OO pnm INPUTS OUTPUTS 0 oF O m OF HZ 6A 250V o Qo 50 130 OW PHASE LON ud LOW PASS FILTER LEVEL LEVEL FILTER UT OUTP T ONE CHANNEL SHOWN PREAMP OUTPUTS AMPLIFIER INPUTS ONE CHANNEL SHOWN SURROUND RECEIVER FRONT SPEAKER OUTI TO MAIN SPEAKERS SUBWOOFER LFE OUTPUT SET LOW PASS FILTER TO OFF A POWER L L L INTERMEZZO 1 25 Th AGREE INPUTS OUTPUTS Ov 0 T ON OF 120V HZ 6A 6A 250V O OO 9 9 LOW PHASE LOW PASS LOW PASS JJ R FILTER LEVEL LEVEL FILTER FILTER INPUT OUTPUT D INTERMEZZO 1 25 ONE CHANNEL SHOWN PROCESSOR FRONT CHANNEL OUTPUT AMPLIFIER SPEAKER OUTPUT INPUT SUBWOOFER LFE L OUTPUT TO MAIN SPEAKERS SET LOW PASS FILTER TO OFF POWER be INTERMEZZO 1 2s jn D m AC FUSE INPUTS OUTPUTS ON OFF 0 180 ON OFF 26 2
19. and Pause Il 8 From now on you will want to keep your CD player s remote control handy Press Play B As Track 4 plays observe the level indicated on the RSLM EXAMPLE The test frequency is 100Hz and the level indicated is 2dB Find the intersection of 100Hz X axis and 2dB Y axis Place a dot at that point See Figure 8 Locating a test point 760 85 BO 95100 2 It takes few seconds for the RSLM reading to stabilize especially at very low frequencies Don t rush Give each test adequate time for the meter to stabilize At the bottom of the bar graph is a green ON LED This LED is illuminated whenever the sound level is below the measuring range of the RSLM If this occurs during a test place a dot at the intersection of the test frequency and the bottom frame of the template See Figure 9 Indicating an under range test INTERMEZZO 1 25 When finished press Skip P to advance to the next test Repeat the process described above for Tracks 5 through 26 When you have completed the 23 measurements you are ready to analyze the data and make corrective adjustments The completed Measurement template will look something like the example in Figure 10 Completed R A B 0 S template m 2217122 HG FI ram FoumpmEE E Now connect the dots as shown in Figure 11 This will make interpretation of the data much eas
20. and main speakers are playing it is time to optimize the system for your particular listening room Earlier you placed the subwoofer in its general location Finding the exact location for optimum performance sometimes only involves moving the speakers up to a few inches in any direction We urge you therefore to experiment with placement until your speakers deliver their full potential Room ADAPTIVE BASS OPTIMIZATION SYSTEM Infinity R A B O S is simple to use yet sophisticated low frequency calibration system It is designed to work in conjunction with Infinity Intermezzo self amplified subwoofers The Intermezzo 1 25 subwoofer contains a parametric equalizer that you will adjust as indicated by the R A B 0 S test results Following these instructions you will optimize the Intermezzo subwoofers response characteristics to complement their environment This will dramatically improve the sound of your system The optimization process takes less than 30 minutes The R A B O S Kit Includes the Following Components Specialized Sound Level Meter Test CD Instructions Measurement Templates Width Selector Adjustment Key What 0 5 Does The Test CD provides specially designed signals you will use while performing measurements The sound level meter provided is used to acquire the information needed for adjustments You Will create a response plot on the Measurement Template Using the Width Selec
21. at of other materials Ceramic is stiffer than metals and lighter than plastics and typical composite materials it also offers improved damping These ceramic based transducers take us a giant step closer to the ever elusive ideal transducer In tweeters C M M D technology offers stiffness and damping superior to that of traditional metals and soft dome materials In woofer and midrange applications it offers accurate pistonic operation over the entire frequency range of the driver completely eliminating coloration due to cone breakup and dramatically reducing distortion And when ceramic metal matrix transducers are exposed to moisture sunlight or extreme temperatures their performance does not deteriorate In addition to ceramic diaphragms all the transducers incorporate magnetic shielding and rigid cast frames that through our FEA computer modeling and scanning laser vibrometer measurements have been optimized to reduce resonances This ensures minimal distortion and incomparable performance Amplifier BASH is an amplifier power supply technology that increases efficiency by reducing power dissipation in the output section The BASH topology uses a high efficiency fast response switch mode power supply that provides the main voltage rails for a linear Class AB amplifier By varying the output of the power supply with the audio signal being amplified a constant voltage drop across the output transistors of the linear amplifie
22. ct has been exposed to rain or water or d The product does not operate normally when following the operating instructions Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation or The product has been dropped or damaged in any way or f The product exhibits a distinct change in performance this indicates a need for service 22 Replacement Parts When replacement parts are required be sure the service technician has used replacement parts specified by the manufacturer or that have the same characteristics as the original part Unauthorized substitutions may result in fire electric shock or other hazards 23 Safety Check Upon completion of any service or repairs to this product ask the service technician to perform safety checks to determine that the product is in proper operating condition 24 Wall or Ceiling Mounting The product should be mounted to a wall or ceiling only as recommended by the manufacturer 25 Heat The product should be situated away from heat sources such as radiators heat registers stoves or other products including amplifiers that produce heat Antenna Lead In Wire Ground Clamp Antenna Discharge Unit NEC Section 810 20 Grounding Conductors NEC Section
23. dB Over Range If the sound level exceeds the range of the meter 048 through 5 will all light simultaneously Low Battery When the battery voltage is too low for accurate measurements an LED at the bottom of the bar graph will be illuminated Replace the battery 4 Do not attempt measurements when this light is on RSLM Placement Determine where in the room you are most likely to sit when listening to music or watching a movie This is where you will want to hold the RSLM during measurements The RSLM should be oriented so it can be easily read and held at your seated ear level during tests QD You must use this same position for all tests B The RSLM can be mounted on a standard camera tripod This will ensure the best results Initial System Level Setting The following steps will set the playback level of the system to the correct level for all tests that follow QD Turn the system volume to minimum Cue the R A B 0 S Test CD to Track 2 and press Pause II This track will produce band limited pink noise in both the left and right channels Press Play gt With the RSLM positioned as described above increase the system volume until the RSLM display indicates 10dB See Figure 5 RSLM indicating the correct system level to begin tests 10dB When you have completed this adjustment press Pause 11 Setting the Subwoofer Test Level Each of the following test tracks is about one minute long T
24. e Level This setting will define the amount level you want to reduce the peak in decibels The R A B 0 S level adjustment is limited to attenuation only and is adjustable from 048 to 14dB After optimization the R A B 0 S equalizer will eliminate the largest low frequency peak therefore the broadband bass level can be increased without overpowering the midrange frequencies R A B 0 S applies this compensation automatically You will use the Width Selector as an aid in determining the correct level setting Place the Width Selector as described above and adjust it to the correct width Observe the first frequency point on the high frequency side of the peak that no longer follows the slope of the Width Selector In this example this is 56Hz Calculate the average level of the readings from 56Hz up to 100Hz that is 10 data points in this example 63Hz 10 66Hz 8 72 2 9 11Hz 10 80Hz 9 85Hz 8 90Hz 10 95Hz 10 100Hz 56Hz 4 9 92 10 9 2 Whenever your answer has a remainder always round down disregarding the negative to the next whole number In our example you would enter 9 in the attenuation field This may not be the best method in all cases The next section contains several other examples What You Measure What To Do As stated earlier it is not possible to anticipate the effect of every possible listening environment However
25. e Figure 13 At the top of the Selector is a pull tab When you slide the tab up and down the width of the pie slice becomes narrower and wider respectively The pointers on the sides of the button point to the bandwidth that corresponds to the width of the slice Place the Width Selector over the Measurement Template positioning the center rivet of the Selector over the response peak as shown in Figure 14 Be sure to align the horizontal lines of the Width Selector with those of the Measurement Template INTERMEZZO 1 25 Placement of the Bandwidth Selector 3 P yii H m Mj BEDHAH Frequency Apply pressure to the upper and lower left corners of the Selector using the thumb and forefinger of your left hand Now gently slide the tab up or down until the adjustable slice most closely fits the response data See Figure 15 Selector adjusted for the best fit Hna m X TZ M BO The pointer the slider will indicate the correct width setting Enter this number in the Width field of the Measurement Template In our example the width is 12 5 8 It is not realistic to expect a perfect fit Acoustic measurements encompass the behavior of not only the speakers but of the room and its contents as well Reflected energy standing waves and ambient noise all add their part Determining the best width setting nearly always requires compromis
26. e surges 17 Power Lines An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits or where it can fall into such power lines or circuits When installing an outside antenna system extreme care should be t taken to keep from touching such power lines or circuits as contact with them might be fatal Figure A Example of Antenna Grounding as per National Electrical Code ANSI NFPA 70 18 Overloading Do not overload wall outlets extension cords or integral convenience receptacles as this can result in a risk of fire or electric shock 19 Object and Liquid Entry Never push objects of any kind into this product through openings as they may ouch dangerous voltage points or short out parts that could result in a fire or electric shock Never spill iquid of any kind on the product 20 Servicing Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltage or other hazards Refer all servicing to qualified service personnel 21 Damage Requiring Service Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions a The power supply cord or the plug has been damaged or b Objects have fallen onto or liquid has been spilled into the product or c The produ
27. el in the field provided Skip to the Adjusting the R A B 0 S Equalizer Section on page 18 INTERMEZZO 1 25 Example 2 Two Response Peaks Two response peaks Example 3 Peak Adjacent to a Dip Dip above or below peak x I HH GE dE EIN RA NI Characterized two response peaks approximately equal amplitude and width This requires that you make choice between the two peaks In situations like this the higher frequency peak will always be more audible and objectionable Response peaks below 45Hz unless extreme can actually be beneficial toward achieving visceral impact Perform corrections on the upper frequency peak Apply the Width Selector as described above Align the center line of the Selector over the center of the higher frequency peak Now adjust the Selector until you have achieved the best fit The slider now points to the correct width setting In this example this is at 52Hz The best fit width is 28 Fill in the Width and Frequency fields provided on the template Determine the appropriate level using the technique described earlier This calculation will indicate a 8dB setting However this peak does not reach the OdB level as the lower peak does Therefore a 8dB setting would be excessive The 52Hz peak stops at 2dB Subtracting 2 from 8 yields the correct setting 6dB Enter 6 in the Level field Skip
28. ere you are going to apply equalization Effect of adjustable width Width The frequency range of the R A B 0 S equalizer may be set from 5 to 50 of an octave in 21 steps This setting defines how much of the subwoofers output will be equalized Width is expressed as a percentage of an octave For example a width setting of 25 means the equalizer will affect a frequency band of 1 4 of an octave 1 8 of an octave above and 1 8 of an octave below the center frequency 8 r The octave is a logarithmic expression From any point in the spectrum one octave above or below that point is always double or half the frequency Therefore one octave above 100Hz would be 200Hz One octave below 100Hz is 50Hz In the section that follows we will discuss the use of the Width Selector INTERMEZZO 1 25 Using the Width Selector QD Read the following instructions carefully The example presented may not look like the graph you just created Focus on the concepts and techniques presented Specific cases will be discussed later Width Selector UU 7 i lt z i 2a ij a f 1 i 7 You will use the Measurement Template just completed and the Width Selector to determine the correct width setting The Width Selector graphically depicts a single resonant peak The peak looks similar to a slice of a pie Se
29. eversing the plug If the plug should still fail to fit contact your electrician to replace your obsolete outlet Do not defeat the safety purpose of the polarized plug 13 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them paying particular attention to cords at plugs convenience receptacles and the point where they exit from the product 14 Nonuse Periods The power cord of the product should be unplugged from the outlet when left unused for long periods of time 15 Outdoor Antenna Grounding If an outside antenna or cable system is connected to the product be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built up static charges Article 810 of the National Electrical Code ANSI NFPA 70 provides information with regard to proper grounding of the mast and supporting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna discharge unit connection to grounding electrodes and requirements for the grounding electrode See Figure A 16 Lightning For added protection for this product during a lightning storm or when it is left unattended and unused for long periods of time unplug it from the wall outlet and disconnect the antenna or cable system This will prevent damage to the product due to lightning and power lin
30. gy move the subwoofer closer to a wall or corner FRONT FRONT LEFT RIGHT Here are several additional facts on installation that may prove Y Y SUB useful It is generally believed by most audio authorities that low frequencies below 125 Hz are nondirectional and therefore A A placement of a subwoofer within any listening room is not CENTER critical While in theory it is true that the larger wavelengths of extremely low frequencies are basically nondirectional the fact is that when installing a subwoofer within the limited confines of a room reflections standing waves and absorptions generated within the room will strongly influence the performance of any Subwoofer system As a result specific location of the subwoofer becomes important and we strongly recommend that you surrounn lie gt SURROUND experiment with placement before choosing a final location 1 Placement will depend upon your room and the amount and quality of bass required for example whether or not your room permits placement of the subwoofer near either satellite INTERMEZZO 1 25 CONTROLS AND CONNECTIONS Rear Panel L L INPUTS OUTPUTS 120V 60HZ 6A CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR Front Panel
31. his is normally much longer than required Press Pause or advance to the next test as soon as you are ready This step will set the subwoofer levels for measurement purposes The objective is to scale the subwoofers output to make full use of the RSLM indicator range Scaling is optimum when 0dB reading is observed on the highest peak without triggering the over range indication Later you will rebalance the subwoofers to the main speakers D The Intermezzo subwoofers should be shipped with the three R A B 0 S controls and set to fully clockwise positions and all measurements should be conducted with their level controls in this position Confirm this setting before you begin this test The gain control should be set to the mid position 5 Cue Track 3 and Pause Il Track 3 continuously steps through all subwoofer test tones for approximately 1 minute Each tone will play just long enough for the RSLM to give a stable reading To get accurate measurements it is necessary to play the woofers quite loud The 0dB indication is about 94dB At this level frequencies below 100Hz can cause doors windows furnishings and other objects in the room to vibrate This frequently results in clearly audible buzzes and or rattles that come and go as each test tone plays Strong buzzes not only sound bad they can cause measurement errors If you hear a buzz or rattle during this test it is highly recommended that you
32. ier Test example with dots connected What Does Parametric Equalizer Do The R A B O S system uses one band of parametric equalization for response correction Parametric equalizers are the most versatile class of filters The effect an equalizer will have on the signal is dependent on three parameters Frequency The equalizer will have maximum effect at one frequency usually described as the center frequency Level This refers to the amount of cut in dBs the equalizer is set for Bandwidth Defines the range of frequencies over which the equalizer will have an effect On the Intermezzo this adjustment is abbreviated as Width Only parametric equalizers allow independent adjustment of all three parameters These will be explained more fully in the sections that follow Completing the Measurement Template Along the bottom of the Measurement Template are three fields where you will enter the equalizer settings needed to complete system optimization These instructions are based on the example in Figure 11 Use this tutorial to become familiar with the process Strategies for several other test results will be presented later After you have completed these three entry fields you will be ready to perform the adjustments completing R A B 0 S optimization Frequency The frequency of the R A B 0 S equalizer may be adjusted to any one of nineteen frequencies from 20Hz to 80Hz This defines wh
33. n control to your listening preference This concludes the R A B O S process It is recommended that you remove the battery from the RSLM Store the Test CD Width Selector Adjustment Key and the RSLM together INTERMEZZO 1 25 MAINTENANCE AND SERVICE The Intermezzo 1 2s may be cleaned using a soft cloth dampened with water only to remove fingerprints or to wipe off dust The grille may be gently vacuumed Stains may be removed with an aerosol cleaner following its instructions Do not use any solvents on the grille All wiring connections should be inspected and cleaned or remade periodically The frequency of maintenance depends on the metals involved in the connections atmospheric conditions and other factors but once per year is the minimum If a problem occurs make sure that all connections are properly made and clean If a problem exists in one loudspeaker reverse the connection wires to the left and right system If the problem remains in the same speaker then the fault is with the loud Speaker If the problem appears in the opposite speaker the cause is in another component or cable In the event that your Intermezzo 1 25 subwoofer ever needs service contact your local Infinity dealer or Infinity directly at 1 800 553 3332 or www infinitysystems com INTERMEZZO 1 25 SPECIFICATIONS Intermezzo 1 25 Powered Subwoofer Frequency Response 23Hz 130Hz 398 30Hz 130Hz 1 5dB Subwoofer Amplifier Output
34. ns The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance 1 Read Instructions All the safety and operating instructions should be read before the product is operated 2 Retain Instructions The safety and operating instructions should be retained for future reference 3 Heed Warnings All warnings on the product and in operating instructions should be adhered to 4 Follow Instructions All operating and use instructions should be followed 5 Cleaning Unplug this product from the wall outlet before cleaning Do not use liquid cleaners or aerosol cleaners Use a damp cloth for cleaning 6 Attachments Do not use attachments not recommended by the product manufacturer as they may cause hazards 7 Water and Moisture To reduce the risk of fire or electric shock do not use this product outdoors or near water for example near a bathtub wash bowl kitchen sink or laundry tub in a wet basement near a swimming pool or the like 8 Accessories Do not place this product on an unstable cart stand tripod bracket or table The product may fall causing serious injury to a child or adult and serious damage to the product Use only with a cart stand tripod bracket or table recommended by the manufacturer or sold with the product Any mounting of the product should follo
35. r can be maintained This means that the power dissipation in the output transistors is greatly reduced The result is an extremely efficient audio amplifier that does not compromise audio performance Room Friendly Acoustical Design Driver quality is not the only requirement for exceptional performance Infinitys engineers understand that the room in which the loudspeaker is placed can greatly affect its performance To ensure that Intermezzo Series loudspeakers will Sound exceptional in even the most unexceptional listening environment Infinity has developed the proprietary Room Adaptive Bass Optimization System R A B 0 S With a single band of parametric equalization the Intermezzo 1 25 can be adjusted to tame any problematic room bass resonances below 80Hz We hope you enjoyed this brief introduction to the technology of Intermezzo loudspeakers If you would like to further explore their technology and design please ask your Infinity dealer for the C M M D and R A B 0 S White Papers The White Papers can also be downloaded from Infinity s Web site at www infinitysystems com INTERMEZZO 1 25 Unpacking the Product Finish unpacking the speakers and check the contents If you suspect damage from transit report it immediately to your dealer and or delivery service Keep the shipping carton and packing materials for future use Included Accessories Grille Decorative Side Panel AC Cord R A B 0 S Ki
36. s your new test position 2 Reset the test level Return to the section Setting the Subwoofer Test Level on page 11 Perform the procedure as described 3 Repeat the measurements Now that you are familiar with the measurement process you can go much faster by using Tracks 27 50 These tracks contain all the test tones necessary for measurement However each test is only about three seconds and there is no frequency announcement The first test is 100Hz J ust place each test mark in order until finished Connect the dots Your second measurement will no longer exhibit the deep response dip However the peak will still be evident Without the influence of the response dip the amplitude and center of the peak may have changed Compare your new data to the examples given in this section of the manual Follow the instructions for the example that most closely matches your new measurement Example 4 Narrow Response Narrow Response k k k k T UR 4D X3 m MES TJ TON ND Although it looks as though this speaker is quite bass deficient this is actually indicative of a single very narrow peak in excess of 10dB high Apply the Width Selector as described above Align the center line of the Selector over the center of the peak as shown in Figure 14 Now adjust the Selector until you have achieved the best fit The slider now points to the correct width setting In this example the
37. t 1 ARLE R A B 0 S Test CD Graph Templates Bandwidth Selector lt Adjustment Key INTERMEZZO 1 25 Since the installation of subwoofer can somewhat more complicated than installing full range speakers it is essential that you read this section very carefully prior to connecting the CHANNEL CHANNEL subwoofer to your system Should you have questions relating to SUB your installation it is advisable to call either your dealer or Infinity s Customer Service Department for advice performance of the subwoofer is directly related to its placement in the listening room and how you align the subwoofer with its satellite speakers Setting the volume of the subwoofer in relationship to the left and right speakers is also of critical importance because it is essential that the subwoofer integrates smoothly with the entire system Setting the subwoofer s volume level too high will result in overpowering boomy bass Setting SOFA the volume level too low will negate the effect of the subwoofer Generally speaking the closer the subwoofer is placed to a room boundary walls and corners the more bass output there will be If you are hearing too much low frequency sound in relation to the rest of the program material move the subwoofer further from the corner or wall Conversely if after making all adjust ments there is still not enough low frequency ener
38. to the example in Figure 21 you have a very favorable setup Skip to the Final System Balance section page 19 Adjusting the R A B O S Equalizer Now that you have performed the measurements and interpreted the data you have the information needed to adjust the subwoofer s equalizer There are three equalizer adjustments on the Intermezzo 1 25 Left to right they are marked F frequency L level and W width Each control has 21 positions These are numbered from left to right Therefore Position 1 is the full counterclockwise position The following table illustrates all switch positions Position Hz L dB W 1 20 141 4 5 2 20 13 9 5 3 20 13 5 7 5 4 21 13 1 10 5 22 12 7 12 5 6 24 11 7 16 5 7 26 11 0 20 5 8 30 10 2 23 9 35 9 5 26 10 38 8 9 28 11 40 8 3 29 5 12 43 1 9 31 13 46 6 4 34 14 49 4 4 39 15 52 2 9 41 5 16 56 1 9 43 5 17 63 1 1 45 18 66 0 5 46 5 19 72 0 0 48 20 71 0 0 49 21 CW 80 0 0 49 5 You must use the R A B 0 S key to adjust these controls Always adjust both subwoofers together Using the adjustment key adjust the controls as indicated by the Measurement Template Each value shown in the table is represented by detents in the R A B 0 S controls Simply count the number of detents necessary indicated by the results of your R A B O S Test Intermezzo 1 25 R A B 0 S Controls
39. tor you will then determine the appropriate equalizer settings The Key is used to adjust the parametric equalizer built into the Intermezzo subwoofer After adjustment the test sequence is repeated to confirm your settings The 0 5 Goal It is a fact of audio that what we hear at low frequencies is determined as much or more by the listening room than by the loudspeaker itself Placement of the loudspeakers and listeners and the acoustical characteristics of the room surfaces are all important determinants of bass quantity and quality In most practical situations there is little that can be done about this except for patient trial and error repositioning of the loudspeakers and listeners Usually the practical constraints of a living space and the impracticality of massive acoustical treatment mean that equalization is the only practical solution Professional sound engineers routinely employ sophisticated measurement systems and equalizers to optimize speakers to the installation This has never been practical for the home audiophile This is why R A B 0 S was created R A B 0 S enables you to identify the dominant low frequency response characteristic of your room Once you know the problem R A B 0 S provides the tools needed to optimize the low frequency characteristics of the speakers to the room they are in exactly as the professional sound engineers do it Performing R A B 0 S Tests These instructions assume yo
40. u have already installed your Intermezzo subwoofer according to the information provided in the Owner s Guide It is also assumed that all equipment in your entertainment system is interconnected properly and is in good operating condition Preparations Before beginning R A B O S tests please check the following Make sure all three R A B 0 S controls on the Intermezzo 1 25 are turned fully clockwise Make sure the loudness contour if any on your receiver processor preamp is turned off Set the tone controls Bass and Treble to their center or flat positions Bypass all surround and effects features of your receiver processor preamp or set to Stereo Bypass If you are using a multichannel surround processor or receiver make sure all bass management features are properly set The Audio channels should all be set to Small High Pass and the subwoofer set to On You must have a CD player in the system A CD player remote control is quite convenient but not essential For best results it is recommended that all major furnishings are in place and that all doors and windows in the listening area are in their normal positions That is if you normally listen to music with all doors closed then this is how they should be during this procedure Try to minimize ambient noise while running tests Turn off all major appliances and any air conditioning or furnace fans These can create significant subsonic noise
41. w frequencies well we recommend that you set the switch to On Low Pass Filter Adjustment Control The Low Pass Control determines the highest frequency at which the subwoofer reproduces sounds If your main speakers can comfortably reproduce some low frequency sounds set this control to a lower frequency setting between 50Hz 100Hz This will concentrate the subwoofer s efforts on the ultradeep bass sounds required by today s films and music If you are using smaller bookshelf speakers that do not extend to the lower bass frequencies set the Low Pass Filter Adjustment Control to a higher setting between 120Hz 150Hz Note This control will have no effect if the Low Pass Filter Switch is set to Off If you have a Dolby Digital or DTS processor receiver the Low Pass Frequency is set by the processor receiver So you should leave the Low Pass Filter Switch in the Off position Consult your owner s manual to learn how to view or change this setting Phase Control The Phase Switch determines whether the subwoofer speaker s piston like action moves in and out with the main speakers 0 or opposite the main speakers 180 Proper phase adjustment depends on several variables such as room size subwoofer placement and listener position Adjust the phase switch to maximize bass output at the listening position Final Positioning After correctly connecting the Intermezzo 1 2s and verifying that both the subwoofer
42. w the manufacturer s instructions and should use a mounting accessory recommended by the manufacturer 9 A Product and Cart Combination Should Be Moved with Care Quick stops excessive force and uneven surfaces may cause the product and cart combination to overturn 10 Ventilation Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from overheating and these openings must not be blocked or covered The openings should never be blocked by placing the product on a bed sofa rug or other similar surface This product should not be placed in a built in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer s instructions have been adhered to 11 Power Sources This product should be operated only from the type of power source indicated on the marking label If you are not sure of the type of power supply to your home consult your product dealer or local power company For products intended to operate from battery power or other sources refer to the operating instructions 12 Grounding or Polarization This product may be equipped with a polarized alternating current line plug a plug having one blade wider than the other This plug will fit into the power outlet only one way This is a Safety feature If you are unable to insert the plug fully into the outlet try r
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