SC12-30 Manual
Contents
1. I9 ERO u HEA D L Zone 1 2 3 Zone 4 Zone 5 Zone 6 14 www SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS CONFIGURING YOUR SYSTEM Because the SC12 30 offers so many configuration possibilities it is important to plan carefully before you install it Draw a block diagram of your system and use the Configuration Worksheet on page 27 to record how you plan to connect your C12 30 Here is an example filled out according to the block diagram on page 10 Example 1 BUS INS amp OUTS CONNECTED TO Left Main Bus Right Main Bus Cascade Output CH BRIDGED DIP NENNEN EN LR Mens ZowS Riht MODE SETTINGS IN USE SPECIAL Dwmewee O OSS S yO QQ SSS S SpeakerCraft 1 800 472 5555 1 707 778 5733 15 SpcakerCraft INSTALLATION CONSIDERATIONS Automating the turn on of your SC12 30 is one of the easiest steps when installing it in a distributed system However do not plug the main power cord into the switched AC outlet of your preamplifier or receiver The high power design of the SC12 30 requires lar2. 91107 Zone 1 4 Speaker Outputs SpeakerCraft MRA 664 3 e Multi Room Audio Controller Speokeiroft D Zone 5 N Preamp Output o set to fixed BusMatrix 0 n di NN i 9 i ff SpeakerCraft SpeakerCraft o High Power Volume Controls 9 FO 5 5 Room 1 Room 2 Room 3 Room 4 Room 5 SpeakerCraft 1 800 472 5555 1 707 778 5733 13 SpcakerCraft APPLICATIONS ADDING PREAMPS TO CREATE MORE LISTENING ZONES In the ultimate Multi Zone system you connect stereo preamplifiers or a single component multi zone multi source preamplifier to the dedicated inputs of SC12 30 These dedicated input signals are then routed to the appropriate amplifier channels via dip switch settings creating completely independent listening zones Multi Zone systems enable listeners located in the separate zones to simultaneously listen to different source components as shown in Figure 6 Figure 6 Blu ray Player Zone Outputs 9012 30 r r ich val oat
3. Ee Y E e Xe Koto 9 4 10 SS II WIRING 100 120V T10AL 250V FUSE 220 240V T5AL 250V n CLASS Il WIRING 12 100 120 220 240 V 50 60 Hz 500W 7 CLASsI WIRING 9 Q Nv Removable Iwo prong Dual banana spaced binding post for 16 gauge 6 AC power cord speaker connections SpeakerCraft 1 800 472 5555 1 707 778 5733 19 SpcakerCraft INSTALLATION LINE LEVEL AUDIO INPUT CAUTION The amplifier must be off whenever you make changes to the input Connections STEP 1 Label all of the interconnecting cables for the sources they connect to 2 Connect the sources by inserting the RCA plug into the amplifier s jacks NOTE If you are using two amplifier channels in bridged mode connect the input cable to the even numbered amplifier input jack CASCADE AUDIO OUTPUTS DESCRIPTION Use audio patch cables with RCA phono plugs attached to the ends Connect outputs from your sources to inputs on the amplifier Never connect a source or preamplifier s input e g record inputs to the inputs of your SC12 30 The Cascade Audio Outputs enable you to connect another amplifier to your preamplifier output The connectors are gold plated RCA phono jacks Connect them to another amplifier s inputs with a standard audio patch cable The outputs are not buff
4. 6 www SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS SYSTEM DESIGN BASICS As shown in Figure 1 a distributed audio video system is defined by the number of listening zones it has Within a listening zone you can listen to only one source e g CD Radio iPod etc at any one time A listening zone can consist of a single room or a group of rooms To achieve different volumes and greater convenience in different rooms within a zone individual volume controls can be used SpeakerCraft makes volume controls in various styles and colors When designing your system take into account who will use the system and when they will use it Consult your local SpeakerCraft dealer for more information Figure 1 LCD Blu ray RECEIVER SpeakerCraft 1 800 472 5555 1 707 778 5733 73 SpcakerCraft SYSTEM DESIGN BASICS CONTINUED A MultiZone system as shown in Figure 2 offers the household more flexibility For instance a family might have their family room wired for surround sound and their living room wired for background music In a two zone system the children can watch TV in surround sound while Mom and Dad are reading the paper and enjoying background music in the living room Figure 2 LCD Blu ray Player ZIP Li
5. The bicolor Status LED illuminates green when the amplifier circuitry has been turned on by the Turn On circuits and illuminates red to indicate activation of the amplifier s built in protection circuitry due to either a fault in the wiring or the speaker or with the SpeakerCraft Multi Channel Amplifier itself CLEANING AND MAINTENANCE The internal parts of the 5012 90 are electronic and require no maintenance Once a year it is appropriate to twist the RCA connectors on each input to remove any oxidation and improve conductivity You can clean only with dry cloth Do not use any spray type abrasive cleaners on the amplifier SpeakerCraft 1 800 472 5555 1 707 778 5733 25 SpcakerCraft INPUT LEVEL ADJUSTMENT CONTROL The rear panel Input Level adjustment screws allow you to adjust the level of the SpeakerCraft System Integration Amplifier relative to other amplifiers in your system and or to limit maximum safe gain to protect speakers in the system Note Start this adjustment with the Input Level Adjustment Controls at their factory default 12 00 position For systems that have multiple amplifiers and or operated by remote control i e in wall volume controls touch pads etc Use the Input Level Control to achieve a maximum desired listening level across all of the amplifiers zones following these steps 1 Lower the Input Lev
6. second zone preamplifier output to create a second listening zone Using this output with the 5C12 30 BusMatrix input provides amplification for multiple rooms within a second listening zone as shown in Figure 4 In addition in this example high power is supplied to the patio stereo speakers by bridging channel pair 9 and 10 for the left speaker and bridging channel pair 11 and 12 for the right speaker Figure 4 DUAL ZONE SURROUND SOUND RECEIVER BusMatrix SpeokerCroft SpeakerCraft High Power 9 g 3 Volume Controls o 5 Living Room Kitchen Office Bedroom Patio Bridged Channels 9 10 11 12 12 CCC www SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS APPLICATIONS EXPANDING A MULTI ZONE SYSTEM TO INCLUDE MORE ROOMS In the ultimate Multi Zone system you connect six stereo preamplifiers or a single component multi zone multi source preamplifier to the dedicated inputs of SC12 30 These dedicated input signals are then routed to the appropriate amplifier channels via dip switch settings creating completely independent listening zones Multi Zone systems enable listeners located in the separate zones to simultaneously listen to different source components as shown in Figure 5 Figure 5 CD Player
7. speakers You will actually deliver more power to two pairs of 8 ohm speakers by using two unbridged amplifier channels than you would if you bridged four amplifier channels into two and connected the two pairs of speakers in parallel 10 ww SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS APPLICATIONS ADVANTAGES OF USING THE SC12 30 INA SINGLE ZONE SYSTEM When you connect the preamplifier outputs of your stereo receiver or stereo preamplifier to the SC12 30 BusMatrix you dedicate a robust 30 watts to each speaker in your multi room system as shown in Figure 3 Each channel of the SC12 30 has its own level control so you can compensate for architectural differences that create sonic imbalances In addition you can fine tune the system so that when all of the room volume controls are set to the loudest level the large rooms and the small rooms play at the same volume Figure 3 OERA PRE AMP or AM FM RECEIVER Lr aaa 88 88 88818 88 88 Se Si SR Ere Sr ie eat Single Zone nk ae uate SpeakerCraft 1 800 472 5555 1 707 778 5733 11 SpcakerCraft APPLICATIONS USING A DUAL ZONE RECEIVER FOR TWO LISTENING ZONES Most of today s Dolby Digital Audio Video Receivers include a
8. used as the disconnect device and shall remain accessible and operable at all times 18 Do not expose batteries to excessive heat such as sunshine fire or the like 19 Open flame sources such as lighted candles should NOT be placed on the apparatus WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture 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 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 FCC Required Text 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 harmful interference ina residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur ina particular installation If this equipment does caus
9. ANEL DETAILS Front panel Master Power switch turns off the entire amplifier including the Turn On circuitry C12 30 Multi Channel Amplifier EMT Cascade outputs of the main bus input enable you to daisy chain multiple amplifiers Main Bus Inputs enable you to route a stereo line level source to the BusMatrix of the SC12 30 C12 30 Multi Channel This Class B digital apparatus complies with Canadian ICES 003 t Amplifier Cet appareil num rique de la classe B est conforme la norme Sp k C f e eropp renoma BRIDGED 2 3 BRIDGED 4 5 BRIDGED 6 CE XK gt M LAN CSA f m 4 MAIN CASCADE ENT EL EL USECH6 EL BUS INPUT OUTPUT BRIDGED BRIDGED BRIDGED L L Coo L L CoL wz MNZHT sys EGER ays ae os LJ De m9 Le mS 6 5 o0 o alla Q 9 4 Q MINIMUM NIMUM Turn On Mode Switch OQ 8 O MINIMUM IN BRIDGED MODE 8 Q MINIMUM IN BRIDGED MODE 80 BRIDGED MODE TURN ON MODE BRIDGED BRIDGED BRIDGED BRIDGED BRIDGED BRIDGED AUDIO SENSE A AC DC LAR ZAN CONSTANT TRIGGER A INPUT TN 12V CONTROL OUT O A 5 6 CLASS II WIRING CLASS II WIRING 3 5 mm Jack for 12v DC Control Input 3 5 mm Jack for 12v DC Control Output 18 www SpeakerCraft c
10. Dual banana plugs will fit the binding post CAUTION All speaker wire connections must be made with the amplifier off DESCRIPTION If you label the wires for their destination rather than which 1 Label all wires terminal of the 5012 30 they are connected to it will be easier to reconfigure your system in the future A Split the speaker wire insulation so that at least two inches of each conductor are separated 2 Connect one stripped wire end or banana plug to the black terminal and one to the red terminal CAUTION Avoid having even a B Strip one half inch of insulation from the end of each single strand of wire touching the chassis or conductor of the speaker wire another connector C Attach banana plugs or twist the strands of wire together and insert them into the appropriate binding post SpeakerCraft 1 800 472 5555 1 707 778 5733 21 SpcakerCraft INSTALLATION BUSMATRIX INPUT SWITCH SETTING Each channel has a dedicated BusMatrix DIP switch that assigns that channel s source To assign a signal from the Main Bus Input select one of the first three switches which will give you either Left L Right R or Mono L R To assign the channel s dedicated input select the fourth switch Only ONE switch should be selected to the ON position DESCRIPTION ICAUTION The DIP switch physically allows you to move all Move onl
11. IES CORE BRANDS EXPRESSLY DISCLAIMS ALL SUCH OTHER WARRANTIES INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT WITH RESPECT TO THE PRODUCT TO THE MAXIMUM EXTENT PERMITTED BY LAW SPEAKERCRAFT SHALL NOT BE RESPONSIBLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES EXCEPT TO THE EXTENT PROVIDED OR PROHIBITED BY APPLICABLE LAW EVEN IF CORE BRANDS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES Notwithstanding the above if you qualify as a consumer under the Magnuson Moss Warranty Act or applicable state laws then you may be entitled to any implied warranties allowed by law for the Warranty Period Further some states do not allow limitations on how long an implied warranty lasts or allow the exclusion or limitation of consequential damages so such limitations may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state For the name of your nearest authorized SpeakerCraft dealer contact CORE Brands LLC 1800 South McDowell Blvd Petaluma California 94954 or call 800 472 5555 or 707 778 5733 Please be advised that Core Brands only sells its products via the Internet through a select group of authorized Internet dealers These are listed on our website at www SpeakerCraft com Products offered on the Internet through unauthorized Internet dealers are not covered by the Core Brands warranty a
12. SC12 30 MULTI CHANNEL AMPLIFIER INSTALLATION GUIDE SpocakerCroft SpcakerCraft CONGRATULATIONS Thank you for purchasing the SpeakerCraft SC12 30 one of the most versatile and powerful multi channel amplifiers ever offered Like all SpeakerCraft products the SC12 30 is built to the highest standards of quality and reliability With proper installation and operation you ll enjoy years of trouble free use TABLE OF CONTENTS INTRODUCTION 4 FEATURES AND BENEFITS 5 SYSTEM DESIGN BASICS a SYSTEM DESIGN CONSIDERATIONS 9 APPLICATIONS 1 CONFIGURING YOUR SYSTEM lb INSTALLATION CONSIDERATIONS 16 FRONT AND REAR PANEL DETAILS 18 INSTALLATION 20 OPERATION 29 TROUBLESHOOTING CUIDE 2 SPECIFICATIONS 27 CONFIGURATION WORKSHEET 30 www SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS IMPORTANT SAFETY INSTRUCTIONS 1 Read these instructions 2 Keep these instructions 3 Heed all warnings 4 Follow all instructions 5 Do not use this apparatus near water 6 Clean only with a dry cloth 7 Do not block any ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Do not defeat the safety 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
13. aker wires Label the cables and wires with their destination or source rather than the 9012 30 terminal to which they are connected This will make it easier to reconfigure your system in the future The SC12 30 connects to your sources via shielded line level audio cables with RCA connectors Use high quality cables with your SpeakerCraft amplifier for the lowest possible noise and best overall performance Your SpeakerCraft dealer can recommend the proper cable The SC12 30 connects to your speakers using two conductor speaker wire For most applications we recommend you use 16 or 18 gauge wire For wiring runs longer than 80 feet we recommend 14 gauge wire The SC12 30 s high quality gold plated 5 way binding posts will accommodate up to 12 gauge wire Attaching banana plugs to the wire will enable the connection of larger wire sizes SpeakerCraft 1 800 472 5555 1 707 778 5733 Q9 SpcakerCraft SYSTEM DESIGN CONSIDERATIONS CONTINUED USING MONO FOR SMOOTHER COVERAGE In large or irregularly shaped rooms you may find that the main listening area may be closer to one of the speakers If the speakers in the room are connected to a stereo amplifier you will only hear half the music The SC12 30 s BusMatrix enables you to create mono sound from one speaker without impacting the stereo quality in the rest of the system You can configure each room to either stereo or mono as needed with no ill effects Some of the
14. als labeled Bridged BRIDGED BRIDGED 1 2 DESCRIPTION The 12 channels are grouped into 6 pairs e g 1 amp 2 Only the two channels within a pair can be bridged Thus only channels 1 and 2 or channels 3 and 4 could be bridged You cannot bridge 2 and 3 for example A bridged channel on a 9012 90 is designed for an eight ohm minimum load Connecting a speaker with a nominal impedance of less than 8 ohms may cause the SC12 30 to go into protection or be damaged Connect your speaker wire only to the red terminals of the two adjacent amplifier channels If one of the speaker wires touches a black terminal thereby grounding the red hot terminals you will short circuit the amplifier These connections to a bridged channel pair will result in either thermal shutdown or poor quality sound When two channels are bridged into one make sure that the odd numbered input DIP switches are all in the off position 23 SpcakerCraft INSTALLATION SETTING THE TURN ON MODE SWITCH TURN ON MODE AUDIO SENSE The SC12 30 has three turn on modes Select 3 30V the mode you want by sliding the mode switch CONSTANT B S ES See Installation Considerations on page 16 for INPUT more information about each of the turn on modes TIP To conserve energy set the TURN ON mode to SLIDE THE SWITCH WITH EITHER either AUDIO SENSE or TRIGGER INPUT Use of the YOUR FINGERNAIL OR 1 8 CONSTANT mode will prevent the amp
15. ar harsh sounding treble from any good speaker turn the volume down immediately Those harsh sounds are masking some much more powerful high frequency sound spikes which could quickly damage the speaker and or activate the amplifiers protection circuit Clipping distortion causes the amplifier to work harder in its attempt to reproduce the signal resulting in an increase in heat generated by the amplifier If you continue to operate the amplifier at clipping power levels the amplifier protection circuits will activate when the amplifier overheats shutting the amplifier off The protection circuits will reset automatically once the amplifier s internal circuitry cools Should the protection circuit become activated reduce the master volume and re check the Input Level Control adjustments to minimize the chance of a reoccurrence Perpetually overdriving your speakers and amplifier is considered abuse and will void the manufacturer s warranty of all affected products SpeakerCraft 1 800 472 5555 1 707 778 5733 27 SpcakerCraft When there is a problem consult this guide first If the problem persists or you have additional questions call your local SpeakerCraft dealer or call SpeakerCraft Technical Support at 1 800 472 5555 The most common problems relate to hook up Have your configuration worksheet handy when you call Possible Causes and Test Procedure B
16. e harmful interference to radio or television reception which can be determined by turning the equipment off 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 Increase the separation between the equipment and receiver Connect the equipment into an outlet ona circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment SpeakerCraft 1 800 472 5555 1 707 778 5733 SpcakerCraft INTRODUCTION More power more channels and more music SpeakerCraft amplifiers deliver the power and fidelity you demand whether you need a couple of channels for stereo or you want to distribute music throughout your home When SpeakerCraft set out to develop the custom installation industry s most complete line of amplifiers we Knew we had to have answers for the variety of situations that you encounter BRIDGABLE POWER AMPLIFIERS 4 www SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS FEATURES AND BENEFITS REAL WORLD POWER The SC12 30 is a 12 channel amplifier that delivers a solid 30 watts per channel RMS into 8 ohms and 40 watts per channel RMS into 4 ohms A new digital p
17. e trigger to function When a Trigger Plug is inserted into the rear panel connector and the sensing circuitry detects a voltage the amplifier is turned on Once the Trigger voltage is turned off the sensing circuit instantly turns the amplifier off The amplifier is off when there is no 3 24V AC or DC voltage detected at the trigger input Voltage triggers can be supplied by SpeakerCraft automated switchers some video projectors some surround sound processors or something as simple as a 12 volt AC wall adapter plugged into the switched outlet of your stereo receiver Linear DC wall adapters are not recommended the long discharge time of the DC adapter s filter capacitor will delay the turn off of the amplifier Trigger sources must be 3 24VAC or DC 20mA or greater 16 www SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS INSTALLATION CONSIDERATIONS PLACEMENT Place the SC12 30 on a flat level surface like a table or shelf It should be placed upright so that its weight rests on the unit s four feet PLACING THE WEIGHT OF THE AMPLIFIER ON THE REAR OR FRONT PANEL FOR EVEN AN INSTANT WILL RESULT IN DAMAGE TO THE AMPLIFIER S CONNECTORS AND CONTROLS The SC12 30 like any hi fi component will last much longer if it is given adequate ventilation for proper cooling When installing the SC12 30 in a cabinet be sure that the rear of the cabinet is open to fresh air to provide proper cooling see Figure 10 If the cabin
18. ealer for service Hum may be caused by a ground loop between two components in the system Test for a ground loop by reversing the AC plugs of any components in the system with non polarized AC Hum from all the plugs speakers Check for faulty cables faulty source material an ungrounded phono system cable TV feed or a defective component Master power switch must be on Amp will not turn on AC power cord must be plugged into a working outlet Test that the AC power receptacle is working If the outlet tests O K the internal fuses are blown Return the amplifier to your dealer for service 28 wwwW SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS TROUBLE SHOOTING CONTINUED Symptom Sound is distorted on one or all of the channels at normal volumes Normal volume cannot be reached Bass sound is weak and the stereo image is phasey sounding in one room A speaker connected to a bridged pair of amplifier channels sounds weak For ease Possible Causes and Test Procedure BusMatrix DIP switches are not in the correct positions Check your configuration worksheet and verify all settings One of the internal amplifier fuses is blown Return the amplifier to your dealer for service Check that the bridging switch is If two adjacent channels are connected normally but the bridging switch is set to the Bridged position the two speakers will play out of phase with each
19. el Controls to the minimum position If there are any other amplifiers in the system lower their respective Input Level Controls to their minimum all amplifiers in your system must have level controls 2 Raise all of the individual in wall volume controls to their loudest setting 3 Play aloud radio station with the tuner set to Mono 4 Raise the volume of your preamplifier or receiver SLOWLY if you hear any sound lower the volume and recheck that all of your amplifiers Input Level Controls are turned to their minimum They must be at their minimums Raise the volume again on your preamplifier or receiver SLOWLY If no sound is heard proceed to step five 5 Have someone step into each room and listen as you adjust each Input Level Control to the desired maximum level for that room Special note There is a potential of running the amplifier into clipping distortion and or protection shut down by raising the Input Level Controls to their extreme Please review Listening at Higher Volumes following this section In applications with multiple amplifiers step between the different zones rooms and adjust the Input Level Controls of each additional amplifier to best match the volume of the first amplified zone room e With independent Input Level Controls for each channel volume balance between speakers within the same room is possible allowing fine volume tuning for the most appropriate listening position var
20. ered if you wish to daisy chain more than 5 SpeakerCraft amplifiers you will need a buffered distribution amplifier AC POWER PLUG 1 Plug the female IEC socket of the supplied AC power cord the supplied power cord is designed for 120V AC wall outlets or use an appropriate IEC AC power cord to match the electrical wall outlet you are using e g 240V AC into the IEC receptacle on the rear of the amplifier CAUTION Do not plug the amplifier s cord into a preamplifier s convenience outlets 20 DESCRIPTION If you use a grounded power strip surge suppressor or extension cord verify that proper ground is maintained The SC12 30 draws a maximum of approximately 890 watts from an AC wall outlet This is much more than the typical accessory outlet on the back of a component will provide Use the SC12 30 s auto turn on circuitry to turn on the SC12 30 whenever the preamp is on www speakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS INSTALLATION SPEAKER WIRE CONNECTIONS Banana Plugs There are many types Bare Wire of banana plugs some Unscrew the red or crimp some solder The black plastic knob SpeakerCraft gold banana insert the bare wire plug has 3 quick connect end into the opening binding post for the bare and then tighten the wire on the body of the knob until the wire is plug A banana plug is securely clamped simply inserted into the jack at the end of the amplifier s binding post
21. et s design will not accommodate an open rear install two small boxer fans to provide continuous air flow into and out of the cabinet see Figure 11 Place the SC12 30 so that there is at least 5 of free air space above the chassis If the amplifier is located on a carpeted surface place a board under the amplifier s feet Do not block the ventilation holes on the top and bottom of the SC12 30 The SC12 30 is equipped with a digital power transformer This transformer generates a powerful magnetic field which could induce hum in a turntable particularly a turntable equipped with a moving coil cartridge Do not place a turntable directly above or directly adjacent to the SC12 30 top of the Amplifier behind the Amplifier 7 Because the surface of the amplifier may get hot it is recommended that a baffle or screen be placed above the amplifier to block hand access to the top surface of the SC12 30 Make sure that there is a minimum of 5 of free air space above the amplifier for proper ventilation 2777770 7 7 7 If the cabinet rear is not open to fresh air or if you re using low impedance loads install two boxer fans to provide continuous air flow into and out of the cabinet WLLL UMMM MMMM Allow a minimum of 2 of depth behind unit to accommodate cables and connectors SpeakerCraft 1 800 472 5555 1 707 778 5733 17 SecakerCraft FRONT AND REAR P
22. ge amounts of current from its AC power source Additionally it is always recommended to activate the system preamplifier receiver before turning on your SC12 30 in order to prevent system turn on thumps In order to address these important needs the SC12 30 has three special turn on modes that let you turn the amplifier on only when it is needed These three options are accessed by the Turn On Mode selector switch See Figure 7 Turn On Modes Figure 7 Constant The auto turn on circuitry is off The TURN ON MODE front panel master power switch operates the AUDIO SENSE amplifier In is On Out is Off CONSTANT HI ARS Audio Sense The master switch on the INPUT front panel must be in the On position The amplifier is off when there is no audio signal present at any of the audio inputs but the sensing circuitry is on The turn on sensing circuitry looks for a signal present at any of the audio inputs If it detects a signal the adjacent pair of amplifier channels i e channel 1 amp 2 3 amp 4 etc assigned to receive the input signals IMPORTANT THE FRONT PANEL POWER SWITCH MUST BE IN THE ON SWITCH IN POSITION FOR ANY OF THE THREE TURN will turn on Once the audio signal stops the ON OPTIONS TO FUNCTION sensing circuit waits two minutes then turns all amplifier channels off 3 24 Volt Ac Dc Opto Isolated Voltage Trigger The Power switch on the front panel must be in the On position for the voltag
23. iables 26 www SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS OPERATION For systems that ARE NOT operated by remote control i e in wall volume controls touch pads etc Use the Input Level Controls to set a maximum safe volume level to protect your speakers and or optimize the signal to noise ratios between source components and amplifier Source component output level controls are sometimes overly sensitive near their minimum position By reducing an amplifier s Input Level Controls you urge the source component s volume control to operate in a more reasonable and enjoyable range This is very subjective so trial adjustments and listening are in order to dial this for the given application As identified in 5b above with independent Input Level Controls for each channel volume balance between speakers within the same room are possible This flexibility allows for channel volume tuning left right channel balance for off center listening positions LISTENING AT HIGHER VOLUMES It requires more power to achieve a reasonable volume of sound in a large room than it does in a small room It is possible even if you are not a teenager to turn the volume so high that the amplifier runs out of power This creates clipping distortion Clipping distortion can be first detected in the higher frequencies of your musical content Clipping distortion will make the treble sound very harsh and unmusical When you he
24. lifier from SLOTTED SCREWDRIVER BLADE turning off when not in use wasting energy THE CONTROL OUTPUT This terminal provides a 12V DC signal suitable for triggering SpeakerCraft automated switchers some motorized screens some electric curtain controls etc This voltage is present only when the amplifier is active or on When the amplifier turns off the 12V signal is off STEP DESCRIPTION 1 Check the requirements of the device you The control output has a maximum want to control current capability of 150 mA 2 Connect the 3 5 mm Jack to the control output maintaining proper polarity tip 24 www SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS OPERATION POWER SWITCH The front panel switch is a master or vacation power switch No matter which turn on mode you have selected the master power switch will turn off all circuitry including the sensing circuitry you will not be using the amplifier for an extended period of time turn the master power switch Off push button switch out When you would like to return to normal operation turn the switch On push button switch in Important Notes Equipment is not completely disconnected from main power source when power switch is in the OFF position Power LED The power LED indicates that the AC cord is plugged into a working AC power receptacle and that the power switch is in the On position Bicolor Status LED
25. most popular areas where mono will greatly enhance the sound quality would be e Large rooms with many seating areas and or many pairs of speakers rregularly shaped rooms e Bathrooms with one speaker over the tub and one speaker over the sink s e Hallways or passageways including those with multiple speakers Small rooms such as walk in closets where more than a single speaker is not required BRIDGING CHANNELS FOR AREAS THAT REQUIRE MORE VOLUME AND POWER There are several situations where bridging is an excellent way to improve the sound There are also applications where bridging would seem to be appropriate but is not recommended Bridging channels increases the power output to 80 watts per channel at 8 ohms These are some of the most common DOs and DON Ts 1 Outdoors DO Sound dissipates faster outside than it does in a room where the walls enclose the sound and reflect it back to the listener A pair of speakers playing into a large patio or yard will greatly benefit from bridging four channels into two 80 watt channels 2 Surround Sound Systems DO The dynamic demands for the center channel are much greater than the left right or surround channels This is an excellent application for two channels to be bridged into one 80 watt channel 3 More than one pair of 8 ohm speakers DON T In alarge room ora long hallway often the best way to get good background music is to install multiple pairs of
26. nd may be either 1 goods acquired on a secondary or grey market 2 counterfeit or stolen goods 3 damaged or defective goods Please fill in your product information and retain for your records Model Serial No Purchase Date ATTENTION TO OUR VALUED CONSUMERS 30 www SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS SPECIFICATIONS Detail Design Principle Digital high current bridgeable multi channel amplifier Continuous Average Power Output 30 watts RMS per channel into 8 Ohms 40 watts RMS per channel into 4 Ohms all channels driven Continuous Average Power 80 watts RMS per channel into 8 Ohms Output Bridged Frequency 20Hz to 20kHz 0dB 3dB Signal to Noise 20Hz to 20kHz unweighted gt 89 dB at rated power Ratio 2 channels driven Total Harmonic Channel 17 43 81 cm wide Overall 5 347 04 5 cm Va including feet Dimensions 16 4 41 1 cm deep Wont SpeakerCraft 1 800 472 5555 1 707 778 5733 31 BY PHONE IN USA 1 800 472 5555 BY PHONE OUTSIDE USA 1 707 778 5733 ORDER MANAGEMENT 6 00 AM to 5 00 PM PT TECHNICAL SUPPORT HOURS 6 00 AM to 4 00 PM PT ON THE WEB www speakercraft com EMAIL TECHNICAL SUPPORT techsupport speakercraft com SpeakerCraft 1800 South McDowell 7 Petaluma CA 94954 IEO 7 7 8 57733 1 800 472 5555 ww
27. om 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS FRONT AND REAR PANEL DETAILS p Bicolor Status LED illuminates Power LED illuminates to confirm the amplifier is green when the amplifier connected to a live AC power outlet and that the circuitry has been turned on master power switch is on by the Turn On circuits and illuminates red to indicate activation of the amplifier s built in protection circuitry Bridging switches BusMatrx controls dedicated inputs and level controls for each channel Gold plated RCA jacks his device complies with Part fef the FCC Rules Operation is subject to the following two conditions Se ri al N U ber Core Brands LLC Petalifna CA is device may not cause harmfu grence and 2 This device must accept any interference Designed and Engineered in the U g A Made in China d 9 BRIDGED LE USECH8 LE LE USECH10 USE CH 12 WHEN WHEN BRIDGED BRIDGED BRIDGED 220 240V o E3o ls t Nar sls Cae HESE Lle os L je cis PEZ PEZ 100 120V 4 Q MINIMUM 4 Q MINIMUM 4 Q MINIMUM CAUTION REPLACE WITH SAME TYPE AND 8 Q MINIMUM IN BRIDGED MODE 8 Q MINIMUM IN BRIDGED MODE 8 Q MINIMUM IN BRIDGED MODE RATING FUSE BRIDGED 4 BRIDGED BRIDGED 4 BRIDGED BRIDGED 4 BRIDGED AQ SN ON
28. other The loudspeakers are wired out of phase Reverse the connections at the back of one speaker Check that the bridging switch is On BUS INS amp OUTS CONNECTED TO of use the Configuration Worksheet can be enlarged on a photocopier Left Main Bus MODE SETTINGS IN USE SPECIAL consan OP Adioseme Of SpeakerCraft 1 800 472 5555 1 707 778 5733 29 SpcakerCraft LIMITED WARRANTY Core Brands LLC Core Brands warrants to the original retail purchaser only that this product will be free of manufacturing defects in material and workmanship for the following periods and subject to the limitations and exclusions set forth below Two years from the date of purchase This warranty is not transferable to subsequent purchasers of the product To obtain warranty service contact the authorized dealer where you purchased your product or take the unit to the nearest authorized SpeakerCraft dealer with proof of purchase claims made without proof of purchase will be denied who will test the product and if necessary forward it to Core Brands for service If there are no authorized SpeakerCraft dealers in your area you must contact Core Brands to receive a factory Return Authorization Number DO NOT RETURN ANY UNIT WITHOUT FIRST RECEIVING WRITTEN AUTHORIZATION AND SHIPPING INSTRUCTIONS FROM CORE BRANDS Upon examination Co
29. ower transformer design provides the energy necessary to efficiently deliver solid deep controlled bass response to a house full of speakers TWELVE TO SIX CHANNEL CONFIGURABLE POWER Each of the SC12 30 s six adjacent speaker output pairs are bridgeable You can create up to six 80 watt channels by sliding the bridging switches located between each pair to the bridged position This enables you to allocate more power to specific locations such as large rooms or outdoor applications FREEDOM FROM NOISE AND CROSS TALK The SC12 30 s BusMatrix incorporates advanced PCB construction ensuring extremely high channel to channel isolation Signal to noise ratios and cross talk are equivalent to a professional mixing board found in a recording studio With the SC12 30 the music playing in the living room cannot interfere with the music in the den TRANSPARENT SOUND The audio circuitry of the SC12 30 is constructed with the finest parts available including 1 metal film resistors high quality capacitors and oversized heat sinks All this attention to technical detail results in a sound that is clear and uncolored BUSMATRIX SELECTOR Our unique BusMatrix selector gives you the flexibility to assign each channel to a common Left Right or Mono signal bus or to a dedicated signal input With BusMatrix routing surround sound to the master bedroom stereo to the den and mono to the powder room is as simple as flicking a
30. re Brands will at its sole option and expense repair or replace any product found to be defective Core Brands will return the repaired or replaced unit to you via its usual shipping method from the factory to your address in the United States of America or Canada only Any shipping costs for addresses outside of the United States or Canada shall be the responsibility of the purchaser In the event that this model is no longer available and cannot be repaired effectively Core Brands at its sole option may replace it with a different model of equal or greater value or refund the original purchase price paid THE FOREGOING ARE YOUR EXCLUSIVE REMEDIES FOR BREACH OF WARRANTY This Warranty does not include service or parts to repair damage caused by improper use or handling including but not limited to damage caused by accident mishandling improper installation commercial use abuse negligence or any defect caused by repair to the product by anyone other than Core Brands This warranty does not cover reimbursement for your costs of removing and transporting the product for warranty service evaluation or installation of any replacement product provided under this warranty This Warranty will be void if e the Serial Number on the product has been removed tampered with or defaced the product was not purchased from an authorized dealer or reseller THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESSED AND IMPLIED WARRANT
31. stening Zone 1 Listening Zone 2 ee 8 www SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS SYSTEM DESIGN CONSIDERATIONS SPEAKER COMPATIBILITY A single channel not bridged of the SC 12 30 is capable of driving a 4 ohm impedance speaker load No more than two 8 ohm speakers or no more than one 4 6 ohm speaker can be safely connected to a single channel Proper ventilation of the SC12 30 is critical when driving lower impedance loads If the C12 30 is not properly ventilated the protection circuits may activate and shut off the channel at higher volume levels for more information on proper amplifier placement see Installation Considerations on page 16 A channel pair that has been BRIDGED is capable of driving an impedance load of 8 ohms Proper ventilation of the 9012 90 is critical when driving 8 8 ohm load with bridged channels If the 9012 30 is not properly ventilated the protection circuits may activate and shut off the channel at higher volume levels for more information on proper amplifier placement see Installation Considerations on page 16 When designing your system try to specify 6 8 ohm speakers SpeakerCraft offers a complete line of inwall in ceiling outdoor and home theater loudspeakers with all models rated from 6 8 ohms CABLE AND WIRE Because the 9012 30 has many connections on the rear panel see Figure 12 it is important that you correctly label all of the input cables and spe
32. switch BusMatrix makes the SC12 30 an ideal multi room or multi zone amplifier and offers exciting new features and system design possibilities to the professional installer SpeakerCraft 1 800 472 5555 1 707 778 5733 B SpcakerCraft FEATURES AND BENEFITS CONTINUED INDEPENDENT LEVEL CONTROLS Each amplifier channel has an independent level control enabling you to adjust the volume settings for twelve different soeaker locations individually Each speaker can now be adjusted specifically for its location and for who will be listening TURN ON MODES The 9012 50 features three turn on modes 1 Manual turn on via the front panel switch and 2 Audio Sense and 3 External Voltage trigger Audio Sense and External Voltage trigger modes enable you to configure the SC12 30 to interface with any kind of system and turn on automatically AUTOMATIC PROTECTION Each channel has independent thermal and short circuit protection In the unlikely event that a problem occurs on one channel the other channels will continue to play When conditions return to normal regular operation resumes STATUS DISPLAY FOR TROUBLESHOOTING LED s on the front panel indicate Power Active and Protection Status With a glance at the frontpanel a troubleshooter is quickly provided with key information DESIGNED AND ENGINEERED IN THE USA Limited two year parts and labor warranty
33. two blades and a third grounding prong The wide blade or the third prong is 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 from 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 the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service 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 Do not expose this apparatus to dripping or splashing and ensure that no objects filled with liquids such as vases are placed on the apparatus 16 To completely disconnect this apparatus from the AC Mains disconnect the power supply cord plug from the AC receptacle 17 The power supply cord Sometimes referred to as the Mains Plug is
34. usMatrix DIP switch is not in the correct position Check your configuration worksheet for the correct setting and verify Short circuit or loose wire at speaker or amplifier terminals Check that connections are secure and that there are no loose strands of wire crossing from the positive to the negative terminal at the back of the amplifier and the speaker Short circuit or a break in the speaker wire Disconnect the speaker wire at both ends separate the 2 conductors at both ends and test with a meter for a short circuit If there is no short ie on one connect the two conductors at one end and test with a meter for continuity channe Speaker is not working Connect the speaker to a channel that plays another speaker Audio cable to dedicated input is bad Connect the non working channel input to another cable that is known to be good Bridging Switch is in the wrong position Check your configuration worksheet for the correct setting and verify The thermal protection circuit has operated because of overheating caused by over driving or inadequate ventilation BusMatrix DIP switches are not in the correct positions Check your configuration worksheet and verify all settings No sound on some or l l l all channels Audio cable to the main bus inputs is bad Connect the non working channel input to another cable that is known to be good Some or all of the internal amplifier fuses are blown Return the amplifier to your d
35. w SpeakerCraft com 2014 Core Brands LLC All rights reserved SpeakerCraft is a registered trademark of CoreBrands LLC a subsidiary of Nortek Inc All other trademarks are the property of their respective owners We reserve the right to change specifications descriptions and prices without notice The technical and other information contained herein is not intended to set forth all technical and other specifications Designed and engineered in the USA 10001834 Rev A
36. y ONE switch to the ON position four of the switches to the On position If you accidentally for each channel set more than one switch On you will create an undesirable mix of inputs on the entire bus 22 LLL www SpeakerCraft com 12 CHANNEL BRIDGEABLE POWER AMPLIFIERS INSTALLATION BRIDGING TWO CHANNELS INTO ONE The SC12 30 s bridging switches allow you to create a more powerful amplifier channel by combining or bridging two adjacent channels 3 BRIDGED 4 gt EL USE CH 4 WHEN a 6 1 Choose which of the six pairs you wish to bridge and move the bridging switch for that pair to the Bridged position toward arrow CAUTION Do not connect a speaker load of less than eight ohms to a bridged channel 2 Connect the speaker wires to the two Bridged speaker terminals BRIDGED BRIDGED Observe proper polarity markings CAUTION DO NOT connect a speaker selector or headphone junction box to the output of a bridged channel pair 3 Use the EVEN NUMBERED input DIP switch and level control for connections and configuration SpeakerCraft 1 800 472 5555 1 707 778 5733 Slide the bridging switch in the direction of the arrow to bridge two adjacent amplifier channels Set the controls of the newly bridged pair by using the EVEN numbered L L R R sls N A L R dn channel When two channels are bridged together connect speakers to the two termin
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