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Mackie SRM1801 User's Manual

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1. A HIGH PASS B D OWERI OUND REINFORCEMENT SUBWOOFER a Cc ER FUSE AC2 Introduction Thank you for choosing the Mackie SRM1801 subwoofer Mackie s SRM Series powered loudspeakers achieve the perfect balance of power portability and sound quality Designed by the same team that produced the best selling Mackie SRM450v2 the SRM1801 delivers real power in a design that is extremely lightweight and portable The SRM1801 incorporates Mackie standard professional components like efficient Class D Fast Recovery amplifiers and system optimizing Active electronics so that everything sounds great right out of the box The SRM1801 all wood enclosure has a ported bass reflex design that produces tight low end And the lightweight ultra efficient Class D Fast Recovery power amplifier delivers 1000W peak power with less risk of thermal overload This makes the sub extremely lightweight and portable without compromising the power and performance that you deserve Pair this power with our proven built in Active electronics including a precision crossover and tuning filters and you get professional low end that you can feel custom tuned to be tight and punchy Pair the SRM1801 with the best selling SRM450v2 and you have a complete and completely affordable plug and play system that is ideal for small clubs DJs and rehearsal spaces The SRM1801 has both full range and high pass stereo outputs for c
2. and Maintenance suggestions below Care and Maintenance Your Mackie subwoofers will provide many years of reliable service if you follow these guidelines e Avoid exposing the subwoofers to moisture If they are set up outdoors be sure they are under cover if rain is expected e Avoid exposure to extreme cold below freezing temperatures If you must operate the subwoofers in a cold environment warm up the voice coils slowly by sending a low level signal through them for about 15 minutes prior to high power operation e Use a dry cloth to clean the cabinets Only do this when the power is turned off Avoid getting moisture into any of the openings of the cabi net particularly where the driver is located Appendix A Service Information If you think your Mackie product has a problem 4 Replace the fuse drawer by pushing it all the way please check out the following troubleshooting tips and back into the IEC socket do your best to confirm the problem Visit the Support section of our website www mackie com support to If two fuses blow in a row then something is very wrong get some ideas or contact our technical support heroes Try a different outlet in a totally different location If fuses You may find the answer to the problem without having continue to blow see the Repair section on the next page to send your Mackie product away to find out what to do Troubleshooting No Sound No Power e Is the power LED on
3. Hz is sent to these line level output jacks Connect these outputs to the inputs of your main powered loudspeakers or to the inputs of the amplifier powering the main loudspeakers In this way the main loudspeakers will play the range above 125 Hz If the main loudspeakers have good low frequency response then you may decide to use the full range outputs 4 instead The level control and polarity switch have no effect on the high pass outputs The outputs are separate and maintain the stereo separation of the input signals 6 POLARITY This switch reverses the polarity of the signal going into the subwoofer amplifier by 180 It has no effect on the signal at the line level outputs There is no right or wrong setting for this switch Listen to the overall blend of the subwoofer with the rest of the system and select the switch position that gives you the best sound for your audience In fact your system may vary when positioned differently and in alternate venues Don t be afraid to experiment with the position of the polarity switch See page 11 for more information 9 THERMAL OL SIGNAL POWER POLARITY H NORMAL INVERT 7 LEVEL The LEVEL control adjusts the overall signal level at the input to the built in power amplifier It ranges from 6 dB to 6 dB maximum gain with unity gain at the center position 12 o clock The control has no effect on the level of the high pass outputs 5 or
4. SRM1801 Left Subwoofer 2 i Full Range Outputs From Mixer Right Output From Mixer Le Left Output re een SRM1801 Right Subwoofer 1 SRM1801 Left Subwoofer 1 Cooly Mn lan 2006 20000 BE cy oo HMRI ES TTL Sma ONON a a CCR a a a a a a a 5 p a Mixing Console Mackie Onyx 1640 shown The left and right line level outputs from a mixer feed the inputs of a pair of Mackie SRM1801 powered subwoofers Their respective full range outputs feed the inputs of another pair of Mackie SRM1801 powered subwoofers The high pass outputs from the second set of subwoofers then feed the inputs of a pair of Mackie SRM450v2 powered loudspeakers NOTE It is highly recommended that you use straps to secure your loudspeakers for stacked scenarios such as this one Be sure to loop a strap through each handle going down each side of the cabinet setup as shown above 7 Mackie SRM1801 Features THERMAL OL SIGNAL POWER T eaa T O O 18 INCH POWERED SOUND REINFORCEMENT SUBWOOFER ait The rear panel is where you connect AC power and your signals to and from the subwoofer You may also adjust the level and polarity to match the other loudspeakers in your system and account for the subwoofer s location and your room s environment 1 IEC AC Receptacle and Fuse
5. 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 persons Le symbole clair avec point de fl che l int rieur d un triangle quilat ral D OUI PWN PORTABLE CART WARNING est utilis pour alerter l utilisateur de la pr sence l int rieur du coffret de voltage dangereux non isol d ampleur suffisante pour constituer un risque d l ctrocution The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance Le point d exclamation l int rieur d un triangle quilat ral est employ pour alerter les utilisateurs de la pr sence d instructions importantes pour le fonctionnement et l entretien service dans le livret d instruction accompagnant l appareil 20 NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmtul interterence in a residential installation This equip ment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to r
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7. in 76 mm Paper Ferrite 500 watts rms 1000 watts peak lt 0 1 Class D Convection Female XLR Balanced differential stereo left right 20 kQ balanced Male XLR Balanced parallel with input Male XLR Balanced 6 dB to 6 dB 24 dB oct Linkwitz Riley 125 Hz 40 Hz 24 dB oct Butterworth High Pass Filter Amplifier mute auto reset Peak RMS Limiter Thermal OL Signal Power 1 Calculated from peak driver sensitivity and amplifier power half space 2 Measured with swept sine at 1 W within operating range scaled for max power half space 16 AC Power Requirements US 100 120 VAC 50 60 Hz Fuse T 6 3A H 250V Europe 220 240 VAC 50 60 Hz Fuse T 3 15A H 250V Power Consumption 160 watts 1 4 power AC Connector 3 pin IEC 250 VAC 15 A male Construction Features Basic Design Trapezoidal Material Void free plywood Finish Textured black catalyzed polyurethane paint Handles One on each side Grille Perforated metal Physical Properties Height 24 1 in 612 mm Front Width 20 2 in 513 mm Rear Width 15 1 in 383 mm Depth 25 3 in 643 mm Weight 73 Ib 33 1 kg Mounting Method The SRM1801 subwoofer is designed to sit on the floor or stage It is NOT designed to be pole mounted or suspended The cabinet has no rigging points and is not suitable for rigging Never attempt to suspend the SRM1801 by its handles LOUD Technologies Inc is always striving to improve our prod
8. in a written instrument signed by the party to be bound thereby Need help with your new subwoofer e Visit www mackie com and click Support to find FAQs manuals addendums and other documents o Email us at techmail mackie com o Telephone 1 800 898 3211 to speak with one of our splendid technical support chaps Monday through Friday normal business hours PST Directive 2002 96 EC and your national law This product should be handed over to an authorized collection site for recycling waste electrical and electronic equipment EEE Improper handling of this tyoe of waste could have a possible negative impact on the environment and human health due to potentially hazardous substances that are generally associated with EEE At the same time your cooperation in the correct disposal of this product will contribute to the effective usage of natural resources For more information about where you can drop off your waste equipment for recycling please contact your local city office waste authority or your household waste disposal service pa Correct Disposal of this product This symbol indicates that this product should not be disposed of with your household waste according to the WEEE 16220 Wood Red Road NE Woodinville WA 98072 USA United States and Canada 800 898 3211 Europe Asia Central and South America 425 487 4333 Middle East and Africa 31 20 654 4000 Fax 425 487 4337 www mackie com E mail sales mackie
9. out If you have ever experimented with a subwoofer polarity switch you may not have noticed any changes to the sound regardless of its position especially if you are listening to just the subwoofer This is normal as our ears perceive them both as the same lt Time gt Amplitude Figure 1 The polarity invert switch comes into play when the SRM1801 subwoofer is paired with a loudspeaker Ideally the woofer cones of the subwoofer and full range loudspeaker would work together by pushing and pulling in unison SRM1801 subwoofers are designed to be used in a broad range of applications and with a wide variety of full range loudspeakers The flexibility provided by the polarity switch is necessary to ensure that you are receiving the best possible sound from your system regardless of your setup Listed below are some recommended configurations for pairing a Mackie SRM1801 subwoofer using the High Pass output with a Mackie full range loudspeaker These settings are a good start but be sure to experiment to find the best sound for your venue The loudspeakers may be stacked pole mounted or flown e SRM450v2 full range loudspeakers Disengage the Polarity Invert switch on the SRM1801 e TH 15A full range loudspeakers Engage the Polarity Invert switch on the SRM1801 In alternate setups where the full range loudspeakers are not co located with the subwoofers or are not connected to the SRM1801 subwoofer s High Pass
10. the rear panel illuminated e Our favorite question Is it plugged in e Is the LEVEL control turned up e Make sure the line cord is securely seated in the e Is the signal source turned up Make sure the line cord socket and plugged all the way into the signal level from the mixing console or whatever AC outlet device immediately precedes the subwoofer is high enough to produce sound e Make sure the AC outlet is live check with a tester or lamp e fit s a stereo pair try switching them around For example if a left subwoofer is presumed dead e Is the POWER switch in the ON position switch the left and right cords at the subwoofers If the problem switches sides it s not the e Is the power LED on the rear panel illuminated SRM1801 It could be a bad cable or no signal from If not make sure the AC outlet is live If so refer the mixer to No Sound below e Ifthe power LEDs are not illuminated and you Bad Sound are certain that the AC outlet is live it is possible the fuse has blown e Is the input connector plugged completely into the input jack To remove and replace the fuse e Is something connected to an output jack Try unplugging it If the sound improves whatever 1 Disconnect the power cord from the IEC socket was plugged into the output jack may have affected the signal 2 Remove the fuse drawer using a small screwdriver It will slide all the way out e sit loud and distorted Reduce the signal
11. 18 Powered Subwoofer OWNER S MANUAL eo Important Safety Instructions Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with a dry cloth Do not block any ventilation openings Install in accordance with the manutacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce eat Do not defeat the satety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide sade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord trom being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with a cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when ue the cart apparatus combination to avoid injury trom tip over 13 Unplug this apparatus during lightning storms or when unused i long periods of time 14 Refer all servicing to qualified servi
12. Connect the detachable line cord to this IEC socket securely and plug the other end into an AC outlet Make sure the AC power is matched to the AC power indicated on the rear panel above the IEC socket The fuse is located behind the fuse cover at the bottom of the IEC socket See the Troubleshooting section on page 18 for information about replacing the fuse Always turn off the power and disconnect the power cord before inspecting or changing the fuse Always replace the fuse with the exact same type and rating as the original fuse 2 POWER Press up on this switch to turn the SRM1801 subwoofer on The power LED 11 above the LEVEL knob 7 illuminates when the POWER switch is on and AC power is available at the linecord socket Press the bottom of this switch to put the subwoofer into standby mode It will not function but the circuits are still live To remove AC power either turn off the AC mains supply or unplug the power cord from the subwoofer and the AC mains supply As a general guide powered subwoofers should be turned on after the mixer and other sources but prior to full range speakers Additionally they should also be powered off after the tops but before the mixer and other sources This will reduce the possibility of any turn on or turn off thumps in your speakers VERY IMPORTANT THERMAL OL SIGNAL POWER O POLARITY H NORMAL w INVERT 3 INPUTS Balanced XLR f
13. adio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment otf and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna e Increase the separation between the equipment and the receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help CAUTION Changes or moditications to this device not expressly approved by LOUD Technologies Inc could void the user s authority to operate the equipment under FCC rules 21 This apparatus does not exceed the Class A Class B whichever is applicable limits for radio noise emissions trom digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications ATTENTION Le pr sent appareil num rique n met pas de bruits radio lectriques d passant las limites applicables aux appareils num riques de class A de class B selon le cas prescrites dans le r glement sur le brouillage radio lectrique dict par les ministere des communications du Canada 22 Exposure to extremely high noise levels may cause permanent hearing loss Individuals vary consi
14. ce personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 15 This apparatus shall not be exposed to dripping or splashing and no object led with liquids such as vases or beer glasses shall be placed on the apparatus 16 Do not overload wall outlets and extension cords as this can result in a risk of fire or electric shock 17 This apparatus has been designed with Class construction and must be connected to a mains socket outlet with a protective earthing con nection the third grounding prong 18 This apparatus has been equipped with a rocker style AC mains power switch This switch is located on the rear panel and should remain readily accessible to the user 19 The MAINS plug or an appliance coupler is used as the disconnect device so the ns device shall remain readily operable RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK ATTENTION POUR EVITER LES RISQUES DECHO ELECTRIQUE NE PAS ENLEVER LE COUVERGI COY CONFIER L ENTRETIEN AU PERSONNEL QUALIFIE AVIS POUR EVITER LES RISQUES D INCENDIE OU D ELECTROCUTION N EXPOSEZ PAS CET ARTICLE A LA PLUIE OU A L HUMIDITE The lightning flash with
15. center To locate your nearest service center call our Tech Support department at 1 800 898 3211 Monday Friday during normal business hours Pacific Time to explain the problem Tech Support will tell you where the nearest factory authorized service center is located in your area 14 Appendix B Connections XLR Connectors The SRM1801 has two female XLR input jacks that accept balanced line level signals When connecting a balanced signal be sure it s wired per AES Audio Engineering Society standards i _ SHIELD COLD HOT _ Balanced XLR Connectors XLR Pin 1 Shield Ground Pin 2 Hot Pin 8 Cold You should use high quality shielded cable to connect the signal source to the INPUT jacks on the SRM1801 e High quality microphone cables work well e Foil shielded cables are commonly used for audio wiring e The better the shield the better the immunity from externally induced noise like EMI and RFI Route the cable away from AC power cords and outlets These are common sources for hum in an audio signal You can purchase quality cables from your Mackie dealer There are also two male XLR connectors on the SRM1801 labeled FULL RANGE and two labled HIGH PASS These are also wired according to the AES standards listed above The FULL RANGE connectors allow you to connect several SRM1801 s Simply plug the signal source e g mixer output into th
16. derably in susceptibility to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time The U S Government s Occupational Satety and Health Administration OSHA has specitied the permissible noise level exposures shown in the following chart According to OSHA any exposure in excess of these permissible limits could result in some hearing loss To ensure against potentially danger ous exposure to high sound pressure levels it is recommended that all persons exposed to equipment capable of producing high sound pres sure levels use hearing protectors while the equipment is in operation Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equipment in order to prevent permanent hearing loss if exposure is in excess of the limits set forth here Duration Sound Level ad day in dBA Slow 3 Assos Typical Example wisma Duo in small dub H E a E 2 l0 loud classical music q5 102 Ye UE Sut eating _ deadlines dt WARNING To reduce the risk of fire or electric shock do not expose this apparatus fo rain or moisture CONTENTS SAFETY INSTRUCTIONS cccssccscsssscsessesccesecvere 2 GETTING STARVED spsssssssscsdesasostssdessasssgesasasinresneniass 4 INTRODUCTION sccsccsssssescssssasisesessonsosncnspsessesansonsoiace 5 HOOKUP DIAGRAMS s osososcososossososesosoos
17. e SRM1801 input jack and patch that subwoofer s full range jack to the next subwoofer s input jack and so on daisy chaining multiple subwoofers There is a limit to how many you can daisy chain together A general rule is to maintain a load impedance ten times or more than the source impedance to prevent excessive loading on the source For example if your mixer has an output impedance of 120 ohms then you can daisy chain up to nine SRM1801 s This is a load of 1222 ohms SRM1801 input impedance 11 kohms 9 of these in parallel 1222 ohms Since microphones typically have a higher output impedance you should limit daisy chaining from a mic source to two SRM1801 s assuming that loudspeakers are also connected to the subwoofers N Q S S lt 15 Appendix C SRM1801 Specifications Acoustic Performance Frequency Range 10 dB Frequency Response 3 dB Max peak SPL calculated Max peak SPL measured Transducer Diameter Voice coil diameter Diaphragm material Magnet material Power Amplifier Rated Power THD Design Cooling Input Output Input Type Input Impedance Full Range Output High Pass Output Level Control Electronic Crossover Crossover Type Crossover Frequency Protection Features Over excursion Protection Thermal Protection Driver Protection Display LEDs 35 Hz 150 Hz 50 Hz 115 Hz 129 dB 124 dB 18 in 457 mm 3
18. e place and not a bad idea to write your product information below for future reference 1 e insurance claims tech support return authorization etc Please write the serial number for your SRM1801 here or for both SRM1S801 s if you have two for future reference i e insurance claims tech support return authorization etc Subwoofer 2 EE Purchased at Date of Purchase Don t forget to visit our website at www mackie com for more information about this and other Mackie products Part No SW0842 Rev B 10 10 2010 LOUD Technologies Inc All Rights Reserved Getting Started The following steps will help you set up your subwoofer s quickly INITIAL SETTINGS L Turn the LEVEL control on the rear panel all the way down 2 Turn the POWER switch OFF CONNECTIONS IF Connect the line level signal from a mixer or other signal source to the INPUT jack on the SRM1801 rear panel XLR connector If you are operating the system in stereo connect INPUT B as well Connect the supplied AC power cord to the IEC socket on the back of the subwoofer Plug the other end into an AC outlet properly configured with the correct voltage as indicated just above the IEC socket TURN IT ON 1 Turn the POWER switch ON Start your signal source mp player CD DAW band or whatever but leave the master level control on your mixer down Slowly turn up the LEVEL control on the SRM1801 to
19. emale connectors are provided for the left and right inputs Connect the full range line level signal from the mixer or other signal source to these input jacks If you are connecting a single subwoofer output or LFE low frequency effects output to the subwoofer you may use either the A or B input connector CAUTION NEVER connect the output of an amplifier directly to the input of the subwoofer This could damage the input circuitry of the active subwoofer amp gt 4 FULL RANGE OUTPUTS Balanced XLR male connectors are provided for the line level A and B full range outputs Connect these outputs to the inputs of another powered subwoofer main powered loudspeakers or to an amplifier powering passive loudspeakers The signal at these outputs is a direct copy of the input signals These outputs allow you to daisy chain multiple subwoofers and or send the full range signals to the main loudspeakers The level control and polarity switch have no effect on the full range outputs The outputs are separate and maintain the stereo separation of the input signals OUTPUTS HIGH PASS 5 HIGH PASS OUTPUTS Balanced XLR male connectors are provided for the line level A and B high pass outputs The subwoofer s internal active crossover splits the input signals into two frequency bands The low frequency range below 125 Hz goes to the internal amplifier that powers the subwoofer The frequency range above 125
20. f Mackie SRM450v2 shown 8l o A High Pass Output a n n From Mixer i Outputs E BA DE Mixing Console Mackie ProFX12 shown Jj pa S 4 es LS EJ LE The left and right line level outputs from a mixer feed the inputs of the Mackie SRM1801 powered subwoofer The high pass line level outputs of the subwoofer feed the inputs of the Mackie SRM450v2 powered loudspeakers so these reproduce the mid to high frequencies in stereo and the sub provides the low frequencies in mono Main PA System with two subwoofers and two powered loudspeakers Right Main Left Main Powered Loudspeaker Powered Loudspeaker Mackie SRM450v2 shown Mackie SRM450v2 shown High Pass Pole Mount High Pass Pole Mount Output Output From Mixer From Mixer Right Output Left Output E mA 5 MMT El MACASUOEECRAS ETRE Mixing Console Mackie CFX12mkll shown The left and right line level outputs from a mixer feed the inputs of the Mackie SRM1801 powered subwoofers The high pass line level outputs of the subwoofers feed the inputs of the Mackie SRM450v2 powered loudspeakers so t
21. hese reproduce the mid to high frequencies in stereo and the subs provide the low frequencies in stereo 6 Daisy chaining two subwoofers SRM1801 SRM1801 Subwoofer 2 oo f Subwoofer 1 Mixing Console CT i A Full Range A i MOY MM Mackie 1604 VLZ3 shown 1 a a i Output From Mixer Output o a MMT FA TN TT NONON 0 e CCLTEELEETEELELLELTEETEL TEE Hi Lii FEE if TT ee The left and right line level outputs from a mixer feed the left and right inputs of the first Mackie SRM1801 powered subwoofer The inputs are summed in mono to play in the subwoofer but this does not affect the full range or high pass outputs which remain fully stereo The left and right full range line level outputs of this subwoofer feed the left and right inputs of the second Mackie SRM1801 powered subwoofer The high pass outputs or full range outputs of either subwoofer could feed the other powered loudspeakers in your system A lot of low end Straps Straps Right Main Left Main Powered do Powered Loudspeaker oe me Loudspeaker Mackie SRM450v2 i i Mackie SRM450v2 shown shown COLLE TL TETE EE TAT TN High Pass Outputs SRM1801 Right Subwoofer 2
22. ide the U S or Canada please visit www mackie com warranty to find contact information for your local distributor and information on any warranty coverage provided by the distributor in your local market LOUD warrants to Customer that the product will be free from defects in materials and workmanship under normal use during the Warranty Period If the product fails to conform to the warranty then LOUD or its authorized service representative will at its option either repair or replace any such nonconforming product provided that Customer gives notice of the noncompliance within the Warranty Period to the Company at www mackie com support or by calling LOUD technical support at 1 800 898 3211 toll free in the U S and Canada during normal business hours Pacific Time excluding weekends or LOUD holidays Please retain the original dated sales receipt as evidence of the date of purchase You will need it to obtain any warranty service For full terms and conditions as well as the specific duration of the Warranty for this product please visit www mackie com warranty The Product Warranty together with your invoice or receipt and the terms and conditions located at www mackie com warranty constitutes the entire agreement and supersedes any and all prior agreements between LOUD and Customer related to the subject matter hereof No amendment modification or waiver of any of the provisions of this Product Warranty will be valid unless set forth
23. le is mounted on a large heatsink which is cooled by convection where cool air is drawn over the rear panel carrying the heat away In order for this convection cooling to work efficiently it is important to provide adequate airspace behind the subwoofer When you position the SRM1801 we recommend leaving at least six inches of air space behind it If for some reason the internal temperature gets too hot a built in thermal switch activates and turns down the amplifier When the amplifier cools down to a safe temperature the thermal switch resets and normal operation resumes If the internal temperature again gets too hot the output level reduction process repeats Should this happen make sure that airflow to the rear of the cabinet is not restricted 12 Placement The SRM1801 subwoofer is designed to sit on the floor or stage It is not designed to be pole mounted or suspended When pole mounting loudspeakers be sure that the SRM1801 subwoofers are stabilized and secured from falling over or being accidentally pushed over For stacked scenarios it is highly suggested that straps are utilized Failure to follow these precautions may result in damage to the equipment personal injury or death WARNING The cabinet has no rigging points and is not suitable for rigging NEVER attempt to suspend the SRM1801 by its handles As with any powered components protect them from moisture and extreme cold and follow the other Care
24. level at the mixer e If possible listen to the signal source with headphones plugged into the preamp stage If it sounds bad there it s not the subwoofer e Too much bass or not enough bass Move around the room and see if the bass response changes It s possible your listening position coincides with a room mode where the low frequencies either become exaggerated or nulled If so try using an alternate polarity switch position moving the subwoofers to a different location in the room or moving your listening position 3 Remove the fuse and replace it with an equivalent type fuse 115 VAC unit 6 3 amp slo blo T 6 3 A H 250 V Id 230 VAC unit 3 15 amp slo blo T 3 15 A H 250 V Noise Hum e Check the signal cable between the mixer and the subwoofer Make sure all connections are secure These problems usually produce crackling noises or hum e If you are using two or more SRM1801 powered subwoofers try plugging them all into the same AC outlet panel or outlet strip The purpose for this is to connect them all to the same earth ground point and reduce the possibility of creating a ground loop e If connecting an unbalanced output to the SRM1801 balanced input make sure the shield is connected to the unbalanced ground and to pin 1 of the XLR Repair For warranty service refer to the warranty information on page 18 Non warranty service for Mackie products is available at a factory authorized service
25. n whenever there is a signal present at the main input connector It senses the signal just after the Level control so adjustments to the level control will affect the signal indicator 11 POWER LED This LED illuminates when the power switch 2 is turned on and the linecord is connected to an active AC Mains supply The Ins and Outs of Polarity Mackie s SRM1801 subwoofer includes a switch that allows you to quickly invert the polarity of the subwoofer s output relative to the input signal it is receiving from the mixer or other sound source But what exactly does that mean A subwoofer works by literally pumping air as the woofer cone moves in and out with respect to the cabinet in which it is housed It does so according to the low frequency portion of the signal it receives from the sound source The woofer cone is simply following the waveform as seen in the sine wave in Figure 1 As the sine wave rises the woofer cone pushes out Likewise as the sine wave falls the woofer cone pulls into the cabinet A musical signal is much more complex of course but the same principle applies Movement of the woofer cone causes air pressure changes that we perceive as sound When the Polarity Invert switch 6 is engaged the original waveform is simply reversed 180 see Figure 2 Again the subwoofer cone follows the waveform However this time the woofer cone starts by pulling into the cabinet followed by the woofer cone pushing
26. onnection to full range top boxes Just dial in the appropriate level and use the polarity switch to make sure the sub is in phase with the loudspeakers The integrated pole cup can accommodate a standard mounting pole so your favorite speaker has a nice place to sit Or you can just stack your full range box right on top of the sub the SRM1801 ain t picky So if you are looking for an extremely powerful professional and great sounding PA setup that is simple to use and easy on the wallet then youre in the right place Here are a few of the key features of your new Mackie SRM1801 e 1000W of ultra efficient Class D Fast Recovery amplification e Mackie Active electronics provide total system optimization e Precision crossover 125Hz e Tuning filters for accurate bass response 18 inch woofer delivers superior output and low frequency extension Dual XLR inputs for mono or stereo applications Stereo high pass and full range outputs User adjustable level and polarity controls Individual power signal OL and thermal protect indicators Pole receptacle for mounting full range loudspeakers Solid plywood enclosure with high durability textured black paint Extremely lightweight and portable 73 lbs 83 1 kg Read on to learn everything you could possibly want to know about your new subwoofer Hooku up Diagrams y Main PA System at one subwoofer and two powered CUT Left and Right Main PEPR 2 Powered Loudspeakers ai
27. ososeososes 6 MACKIE SRM1801 FEATURES ccccccsrscsecssees 8 1 IEC AC RECEPTACLE AND FUSE 0 000000000000 8 Zi FOWER mme 8 D LL RSR en 9 4 FULL RANGE OUTPUTS russe 9 5 HIGH PASS OUTPUTS ssscssscnsonsossssssasessasisonsss 9 Gx POLARI sesessssnsstessssiscnisonsonssusssssssesnesssoases 9 Fo REVEL E 10 6 THERMAL LED issvesessssssesesseusssseivsssteesiaaavs 10 2 OL LED ere 10 10 SIGNAL LED scsssscassosscsssosvesassssnteisenssovessntes 10 LE POWER LEDs 10 INS AND OUTS OF POLARITY cccscscsssseseee 11 PROTECTION CIRCUITS sissccosusonsasciessisessonstessssesterass 12 LIMIT 1 LEA Rs 12 OVEREXCURSION PROTECTION es 12 THERMAL PROTECTION cccecsccsrsssccessccesesees 12 PLACEMENT siennes 12 CARE AND MAINTENANCE esse 12 APPENDIX A SERVICE INFORMATION 13 APPENDIX B CONNECTIONS rs 15 APPENDIX C SRM1801 SPECIFICATIONS 16 MACKIE LIMITED WARRANTY messes 18 a be Qa z Lli Subwoofer 1 What Me read a manual Before you begin please make sure you read the Safety Instructions on page 2 and Getting Started on page 4 Your new Mackie SRM1801 powered subwoofers are designed to set up quickly and operate easily We know it s often seen as a sign of weakness to read a manual along with asking for directions when lost but we hope you will read the rest of the manual at least while nobody is looking It is important to keep your receipt in a saf
28. outputs you will need to experiment with the Polarity Invert switch to determine which setting gives you the desired bass response for your application lt Time gt Amplitude Figure 2 ll Protection Circuits There are several protection mechanisms designed into the SRM1801 to safeguard the subwoofers and amplifiers from inadvertent damage CAUTION The protection circuits are designed to protect the subwoofers under reasonable and sensible conditions Should you choose to ignore the warning signs i e frequent OL LED indications excessive distortion you can still damage the speakers in the SRM1801 by overdriving them past the point of amplifier clipping Such damage is beyond the scope of the warranty z E 2 z Limiting The driver has its own compression circuit which helps protect it from damaging transient peaks The compressor is designed to be transparent and is not noticeable under normal operating conditions Overexcursion Protection A 12 dB octave high pass filter at 40 Hz just prior to the low frequency amplifier prevents very low frequencies from being amplified Excessive low frequency energy below 40 Hz can damage the woofer by causing it to bottom out also known as overexcursion which is equivalent to a mechanical form of clipping Thermal Protection All amplifiers produce heat The SRM1801 is designed to be efficient both electrically and thermally The amplifier modu
29. the U unity gain mark at the center position Adjust the master volume on your mixer to a comfortably loud listening level If the volume from the subwoofer gets really loud really fast try turning down the LEVEL control on the SRM1801 a bit If the subwoofers don t get loud enough turn up the LEVEL control to achieve a good balance of master volume control and loudness from the subwoofer Now that you have your subwoofers working it s time to hunker down and read the rest of this manual especially the following ADDITIONAL TIDBITS OF WIDSDOM e Never listen to loud music for prolonged periods Please see the Safety Instructions on page 2 for information on hearing protection e When you shut down your equipment turn off the SRM1801 subwoofers first to prevent thumps and other noises generated by any upstream equipment from coming out the speakers When powering up turn on the SRM1801 last but just before your full range loudspeakers e Save the shipping boxes and packing materials You may need them someday Besides your cat will love playing in them and jumping out at you unexpectedly Remember to pretend like you are surprised e Save your sales receipt in a safe place e Record the serial number in the space provided on page 3 along with where and when you bought it gt Cr D E THERMAL OL SIGNAL POWER OUTPUTS
30. the full range outputs 4 8 THERMAL LED The SRM1801 is equipped with a thermal protection circuit that monitors the internal temperature of the amplifiers and heatsink If the temperature exceeds a safe operating level this indicator lights and the input signal is muted to allow the amplifiers to cool When the temperature cools to a safe level once again the thermal protection circuit deactivates the Thermal LED turns off and the SRM1801 returns to normal operation When the SRM1801 is in thermal protect mode the power LED 11 will remain lit indicating that the unit is still powered on despite the lack of output Activation of the thermal protection circuit is an indication that you should take steps to avoid continued thermal problems See Thermal Protection on page 12 2 5 ze Lael gt 10 OUTPUTS HIGH PASS 9 OL LED The OL overload indicator lights when the amplifier in the SRM1801 is near the clipping point It is okay if the OL indicator blinks occasionally because this means that the transient peaks are just reaching the maximum output of the amplifier and you are getting the most from your SRM1801 If the OL indicator is blinking frequently or lighting continuously turn down the LEVEL control 7 on the SRM1801 or turn down the signal at it source e g the mixing console until the OL indicator blinks occasionally or not at all 10 SIGNAL LED This LED illuminates gree
31. ucts by incorporating new and improved materials components and manufacturing methods Therefore we reserve the right to change these specifications at any time without notice Mackie and the Running Man are registered trademarks of LOUD Technologies Inc All other brand names mentioned are trademarks or registered trademarks of their respective holders and are hereby acknowledged 2010 LOUD Technologies Inc All Rights Reserved SRM1801 Dimensions 15 1 in 383 mm a ve 25 3 in A cS der 643 mm ee ke Le 7 a 24 1 in M F1 612 mm SRM1801 Frequency Response 10 0 Tu i H N 3 10 Sg gs OS 9 7 30 40 20 50 100 200 400 Frequency Hz 17 Mackie Limited Warranty Please keep your sales receipt in a safe place This Limited Product Warranty Product Warranty is provided by LOUD Technologies Inc LOUD and is applicable to products purchased in the United States or Canada through a LOUD authorized reseller or dealer The Product Warranty will not extend to anyone other than the original purchaser of the product hereinafter Customer you or your For products purchased outs

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