Vital 1250 and 850 Owner`s Manual
Contents
1. amas Co co 9 BNNVHO 5 TINNYHO p PN A B NOSug ann 8 us n 8 8 8 t 4 20 io E code Og co 3Nnexnvesna co co Z TANNVWHD L ENNYHO w An edu own B ADA 484014 JeADid GO e S3oanos e 1 WOOGILINW A Li g LNdLNO a310OMANS AN VEdS O 16 16 6 19 9 1HOl3 1431 3N3lIN3O dvad va 5108110 ja v3ds XAVAS 1431 AVIS C AVIAS 1481 1331 33AI3O33l al31V3HI 3WOH uonej e1su uloo3 nInjw J91e9u Z webera 10 HOI 33v3as 1431 O Ww 6 7aNNVHO 8 TANNVHD T3NNVHD SK A JA aaa AU 08 Co co NI 3NreXnvesna 3NTSXDMeSDB NMXAVeSNE 3Nnexnvesns O TENNVHO 6 HNNVHO 20 Qu Noe ann Ah c 21 13 11 13 Of 5 INN Nn 82. active Will turn off three minutes after the signal has stopped Set to Audio Sense Master Power Button Leave in the position Button Depressed Selecting Inputs See Diagrams 9 amp 10 Each channel is capable of delivering the source from many inputs The three main inputs are BUS AUX and LINE IN The selection for these inputs is done via the Input Selection switch marked BUS AUX LINE To select a source for each channel follow the steps below 1 Select the desired source input Set the Input Selection switch to BUS will play source connected to the BUS INPUT AUX will play source connected to the AUX INPUT or LINE will play source connected to the LINE Diagram 9 ILI 1 BUS AUX LINE 2 The BUS and AUX inputs each have a left and right input The left right or combined left and right signal from these may be selected via the switch marked R L L Select the side you want the channel to deliver Selecting R will play the right channel of the selected input Selecting L will play the left channel of the selected input Selecting will play the combined signals of right and left co Diagram 10 R L Selecting Bridge Mode See Diagram 11 It is sometimes desirable to combine two channels into one through bridging The output of the combined channels can then be used to power one speaker To bridge two adjacent channels move th
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5. Source Selection Switch Allows you to select between the common bus and auxiliary inputs or the individual channel input Gold plated individual channel inputs allow you to connect different audio sources to each channel Fused AC input LEVEL LEVEI LEVEL LEVEL 5 EVEL RIDGE LINE DON N IDGE LINE SON UN CHANNEL 7 CHANNEL 8 une 88 IN 2 BRIDGE LINE LINE IN SON CHANNEL 9 CHANNEL 10 11 BRIDGED r BRDGED 223 FEES CHANNEL 12 BUS AUX LINE BUS AUX LINE BUS AUX LINE BUS AUX LINE BUS AUX LINE BUS AUX LINE R RL L R RL L R RL L R RH L R RL L 89 Minimum BRIDGED 2 Os D K R RL L 80 Minimum BRIDGED 8Q Minimum BRIDGED CHANNEL 7 CHANNEL 9 CHANNEL 10 CHANNEL 11 CHANNEL 12 Binding posts allow 3 Prong the use of stripped One Switch Allows you to removable speaker wire spade select which stereo input power plug channel will play through the speaker outputs left right or left and right combined If switched to Left Right both input channels are combined SYSTEM DESIGN amp OPERATION CONSIDERATIONS To best understand system design and operation of the Vital amplifiers it is useful to understand the following terms and features Multi Room A system design that plays the same source at the same time in all rooms If a change is made in one room the same chang
6. 11 and 12 are set to LINE Multi Zone Example 2 Diagram 6 This illustrates the ability to listen to different audio signals in each zone independent of every other zone The system relies on a multi zone preamplifier or up to 6 independent preamplifiers The Input Selection switch on each channel is set to LINE Home Theater Multi Room Example Diagram 7 This configuration allows the user to access the sources connected to a home theater receiver for use in a multi room installation It relies on the home theater receiver having a multi room or similar output The Input Selection switch on each channel is set to BUS with adjacent channels assigned left and right Home Theater Example Diagram 8 This example uses the power amplifier to drive the speakers in the home theater system The two channels remaining are used to provide music to a separate area or room This configuration utilizes the bridging mode to provide additional power The following adjacent channels are bridged together 1 and 2 3 and 4 5 and 6 7 and 8 9 and 10 Note that on each one of these the signal is connected to the LINE IN on the first channel of the pair the Bridging switch is set to When bridging be sure to use the top speaker outputs as illustrated on Diagram 8 95 1431 AN v3ds LHO AVIS 1431 95 IHOla 95 1431 EDI V3ds LHO
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8. 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 Having years of success with our Big Bang amplifiers SpeakerCraft is reVitalizing our amplifier line to include several digital amplifiers Vital 1250 Vital 850 and Vital 170V These amplifiers include the necessary features needed for flexible reliable custom installation Custom friendly features include multiple turn on modes independent level controls for each channel and pass through outputs The Vital series of amplifiers is a highly reliable solution for every installation with a blend of power performance and value Table Of Contents Page Features 4 Front Panel Diagram 4 Rear Panel Diagram 5 System Design amp Operation Consideration 5 System Design Examples 6 Installation Considerations 12 Installation 12 14 Troubleshooting 14 Specifications 15 Warranty 16 FEATURES Audiophile Design Sophisticated design and superior internal components result in outstanding sound quality performance and long term reliability Advanced Protection Each channel is individually protected If the circuitry determines that a channel must be shut down for protection a rare occurrence only the channel affected will be turned off The other channels will continue to play Once conditions return to normal the affected channel will be turned ba
9. in transit is to be borne by the purchaser If upon examination at the Factory or SpeakerCraft Authorized Dealer it is determined that the unit was defective in materials or workmanship at any time during this warranty period SpeakerCraft or the SpeakerCraft Authorized Dealer will at its option repair or replace this product at no additional charge except as set forth below If this model is no longer available and can not be repaired effectively SpeakerCraft at its sole option may replace the unit with a current model of equal or greater value In some cases where a new model is substituted a modification to the mounting surface may be required If mounting surface modification is required SpeakerCraft assumes no responsibility or liability for such modification All replaced parts and product become the property of SpeakerCraft Inc Products replaced or repaired under this warranty will be returned to the original retail purchaser within a reasonable time freight prepaid This warranty does not include service or parts to repair damage caused by accident disaster misuse abuse negligence inadequate packing or shipping procedures commercial use voltage inputs in excess of the rated maximum of the unit or service repair or modification of the product which has not been authorized or approved by SpeakerCraft This warranty also excludes normal cosmetic deterioration caused by environmental conditions This warranty will be void if the Serial num
10. turn on modes voltage or audio OPERATION See Diagram 1 for the location of the following Power Switch The switch on the front panel of the amplifier will turn off all amplifier circuitry no matter which turn on mode is selected Refer to the Power Mode Selection section for further information Protection Red LEDs When lit the Protection LEDs located on the front of the amplifier indicate that either a fault in the wiring the speaker or the amplifier has caused the channels associated with the LED to shut down Level Adjustment Knobs The level adjustment knobs on the back panel of the amplifier can be used to adjust the level of each channel There are many reasons for needing to adjust the level You many wish to closely match other levels in the system or you may wish to limit the volume level in an area such as a childS room TROUBLESHOOTING The Vital amplifier is designed to function trouble free Most problems occur because of operating errors If you have a problem please check the troubleshooting list first If the problem persists contact your authorized SpeakerCraft dealer or SpeakerCraft technical support at 800 448 0976 or e mail us at techsupportGspeakercraft com The Problem Possible Causes And Solutions No sound is heard Audio cable to the source component is on all channels not connected properly or the cable is bad Use another cable that you know is good The Input Selection switch is po
11. 4 ej Z e e WNW 79 COF aas 08 1 n al co 3Nnexnvesna 3NneXnvesng 3Nnexnvesns JANI 8 HNNVHO Laas l NNVHO dGNrexnvesng 3NHexnvesns Laman e e ote S3oanos TA ED 3 ED dD ED ED TA HD INdNI a 1331 AIN VAdS LHOIS AVIA 33IN3O N33v34S 1431 33400M8hs YSLNIO Ic A p mi SINdLNO e TANNVHD 1NdINO 1331 3HJ4OOM8fn S sOSS3OOsld 8I3AI3O33 al31v3HL IWOH uonej e1su 19 29UL webera 11 INSTALLATION CONSIDERATIONS DO Place the amplifier with the feet resting on a solid flat level surface Place the amplifier in a well vented area to provide proper cooling In areas that lack proper ventilation such as tight cabinets or racks it may be necessary to install small fans to create air movement DON T Dont block the ventilation holes on the top or bottom of the amplifier Never place it on carpeting or similar material Dont place the amplifier in any other position other than horizontal with the feet down Never place on its side or resting on the bac
12. 787 8747 International 1 951 787 0543 www speakercraft com 1191250
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14. Digital Amplifiers SSpeakerCraft SAFETY INSTRUCTIONS RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION To reduce the risk of electric shock do not remove cover or back No user serviceable parts inside Refer servicing to qualified service personnel Explanation of Graphical Symbols The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert you 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 you 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 appliance is operated 2 Retain Instructions The safety and operating instructions should be retained for future reference 3 Heed Warnings All warnings on the appliance and in the operating instructions should be adhered to 4 Follow Instructions All operating and other instructions should be followed 5 Water and Moisture The appliance should not be used near water for example near a bathtub washbowl kitchen sink laundry tub in a wet basement or near a swimming pool etc 6 Carts and Stands The appliance should be used only with a cart or stan
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16. PECIFICATIONS Vital Amplifiers Vital 1250 Rated Power 50 Watts x 12 Channels 8Q 2 Channels Driven Remaining Channels Driven at 1 8 of Rated Power 0 4096 THD N 20 Hz to 20 kHz 0 0596 THD N IW 20 Hz to 20 kHz Power at 4 Ohms 75 Watts x 8 Channels 2 Channels Only Driven at a Time 0 5096 THD N at 1 kHz 0 0596 THD N 1W at 1 kHz Bridged Power Output 170 Watts x 6 Channels 8Q 2 Channels Only Driven at a Time 0 5096 THD N at 1 KHz S N Ratio 5102 db Frequency Response 0 7 dB 20 Hz to 20 kHz 89 1 5 dB 20 Hz to 20 kHz 49 Input Sensitivity 1 0 Vrms Input Impedance 20 9 Damping Factor gt 60 Power Consumption US 120 VAC 60 Hz Europe 230 VAC 50 Hz Australia 240 VAC 50 Hz Standby 7 Watts 120V 1 Watt 230V amp 240V ErP Active On No Signal 80 Watts All Channels Driven to of Rated Power 210 Watts 8Q 270 Watts 4Q Fuse Rating a 120V Version T12A 250V a 230V 240V Version T6 3AL 250V Dimensions 3U H x W x D 6 x 17 x 16 152 mm x 435 mm x 406 mm Weight 49 Ibs 22 kg Vital 850 Rated Power 50 Watts x 8 Channels 8Q 2 Channels Driven Remaining Channels Driven at 1 8 of Rated Power lt 0 40 THD N 20 Hz to 20 kHz 0 0596 THD N 1W 20 Hz to 20 kHz Power at 4 Ohms 75 Watts x 8 Channels 2 Channels Only Driven at a Time 0 5096 THD N at 1 kHz 0 0596 THD N 1W at 1 kHz Bri
17. amplifiers main input receives an audio signal At the moment that either the left or right input jacks receive a signal the amplifier is turned on Once the signal stops the amplifier waits 3 minutes and then turns off CONSTANT Diagram 3 AUDIO e mode switch SENSE Power Mode A 3 30V AC DC Selection TRIGGER INPUT 3 30V AC DC md 2 5mm mini amp TT plug jack 12 CONTROL OUTPUT SYSTEM DESIGN EXAMPLES There are many ways to configure the Vital amplifier The following pages contain some typical installation examples Use these examples to generate ideas for your system design Multi Room Installation Example Diagram 4 This illustrates the simplest use of the Vital amplifier distributing audio throughout the home In this example only one source can be selected at a time all pairs of speakers have the same audio signal available The Input Selection switch is set to BUS on all channels Adjacent channels are assigned left and right Multi Zone Example 1 Diagram 5 This illustrates the simplest way to provide an audio signal to one area that is independent of the main audio signal Zone 2 uses a CD player connected to just that Zone The rest of the system operates Zone 1 and is connected to the preamplifier receiver The Input Selection switch on channels 1 10 is set to BUS with adjacent channels assigned left and right The Input Selection Switch on channels
18. audio source to be played on any channel that is switched to AUX LEVEL une 7 IN io eusineur eus OUTPUT D 90 BUS AUX LINE eo AUXINPUT AUX OUTPUT CYANNEL 1 80 Minimum BRIDGED ZA CHANNEL 1 Slide switch allows you to switch between different trigger CHANNEL 2 BUS AUX LINE BUS AUX LINE R RH L RRL L CHANNEL 2 3 30V AC or DC input to trigger Level controls for each channel Bus outputs allow the bus inputs to be sent to other amplifiers or a daisy chain without the need for Y cables or splitters Auxiliary outputs allow you to daisy chain the input to other amplifiers 5 2 LEVEL PS BRIDGE LINE DON mw O BRIDGE LINE e UNE IN DON IN O CHANNEL 3 CHANNEL 4 LINE IN WEST CHANNEL 5 BUS AUX LINE BUS AUX LINE R ORAL L Minimum BRIDGED CM 89 Minimum BRIDGED OI C CHANNEL3 CHANNEL 4 12V output to turn on other devices when amplifier is powered up Connect to projector screens powered drapes CHANNEL 6 BUS AUX LINE R R L L CHANNELS CHANNIRS connectors or banana plugs methods e power up with or other devices with diea up tne voltage from voltage triggers another device such as a receiver Bridging Switch Allows you to easily double the power output by coupling two channels together
19. ber on the product has been removed tampered with or defaced This warranty is in lieu of all other expressed warranties If the product is defective in materials or workmanship as warranted above the purchasers sole remedy shall be repair or replacement as provided above In no event will SpeakerCraft be liable for any incidental or consequential damages arising out of the use or inability to use the product even if SpeakerCraft Inc or a SpeakerCraft Inc Authorized Dealer has been advised of the possibility of such damages or for any claim by any other party Some states do not allow the exclusion or limitation of consequential damages so the above limitation and exclusion may not apply All implied warranties on the product are limited to the duration of this expressed warranty Some states do not allow limitation on the length of an implied Warranty If the original retail purchaser resides in such a state this limitation does not apply SpeakerCraft offers a variety of accessories to make your installation of this and other SpeakerCraft products easy economical and professional Contact your authorized SpeakerCraft Dealer for more information For technical inquires please call 1 800 448 0976 or e mail us at techsupport speakercraft com We are available to assist you every weekday except holidays between the hours of 7 00 a m and 5 00 p m PST SpeakerCraft 940 Columbia Ave Riverside CA 92507 USA 800 448 0976 Fax 951
20. ck on and operate as normal Flexible Input Selection Each of the channels can be assigned a variety of source inputs A dedicated input can be assigned to each channel Each channel can also be configured to play common signals from the Bus or Auxiliary inputs This provides the flexibility needed in sophisticated custom audio installations Diagram 1 Front Panel SpeakerCraft Master power switch Turns off power to amplifier and Power Mode Circuitry Bridging The power output of adjacent channels can be combined to provide extra power when needed in certain areas This is easily accomplished by flipping a single switch Individual Channel Level Adjustments Each channel has its own level adjustment This allows the loudness of each speaker to be perfectly matched to its area Multiple Power Modes and Output Trigger There are three ways to turn the amplifier on constant trigger and audio sense This allows the amplifier to operate seamlessly as part of a sophisticated custom installation A separate output trigger allows the amplifier to activate other components via a voltage trigger Rack Mountable Each amplifier includes a set of rack ears no hardware for rack mounting applications Diagram 2 Rear Panel Main bus inputs allow outputs from receivers CD players TVs or any stereo audio sources to be amplified across all channels for easy multi room applications Auxiliary inputs allow an additional
21. d that is recommended by the manufacturer PORTABLE CART WARNING 7 Wall or Ceiling Mounting The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer 8 Ventilation The appliance should be situated so that its location or position does not interfere with its proper ventilation For example the appliance should not be situated on a bed sofa rug or similar surface that may block the ventilation openings or placed in a built in installation such as a bookcase or cabinet that may impede the flow of air through the ventilation openings APPLICABLE FOR USA CANADA OR WHERE APPROVED FOR USAGE CAUTION TO PREVENT ELECTRIC SHOCK MATCH WIDE BLADE PLUG TO WIDE SLOT INSERT FULLY ATTENTION POUR EVITER LES CHOCS ELECTRIOUES INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU AU FOND 9 Heat The appliance should be situated away from heat sources such as radiators stoves or other appliances that produce heat 10 Power Source The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance 11 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 f
22. dged Power Output 170 Watts x 4 Channels 8Q 2 Channels Only Driven at a Time 0 5096 THD N at 1 kHz S N Ratio A WTD 5102 db Frequency Response 0 7 dB 20 Hz to 20 kHz 89 1 5 dB 20 Hz to 20 kHz 49 Input Sensitivity 1 0 Vrms Input Impedance gt 20 0 Damping Factor gt 60 Power Consumption US 120 VAC 60 Hz Europe 230 VAC 50 Hz Australia 240 VAC 50 Hz Standby 6 Watts 120V 1 Watt 230V amp 240V ErP Active On No Signal 65 Watts All Channels Driven to of Rated Power 148 Watts 8Q Fuse Rating 120V Version T10A 250V 230V 240V Version TSAL 250V Dimensions 30 H x W x D 6 x 17 x 16 152 mm x 435 mm x 406 mm Weight 43 Ibs 20 WARRANTY Limited Two Year Warranty SpeakerCraft Inc warrants to the original retail purchaser only that this SpeakerCraft product will be free from defects in materials and workmanship for a period of two years provided the product was purchased from a SpeakerCraft Authorized Dealer Defective products must be shipped together with proof of purchase prepaid insured to the SpeakerCraft Authorized Dealer from whom they were purchased or to the SpeakerCraft factory at the address listed on this installation instruction manual Freight collect shipments will be refused It is preferable to ship this product in the original shipping container to lessen the chance of transit damage In any case the risk or loss or damage
23. e switch marked BRIDGE to the position The speaker must be connected to the terminals immediately under the BRIDGED text as indicated in Diagram 11 All input selection and settings for the bridged channels will be done on the channel to the left Do not connect more than one speaker to the outputs of the bridged channel Diagram 11 LEVEL LEVEL rO UNE SER uN 8 IBI Position CHANNEL CHANNEL 2 1 Lr BUS AUX LINE BUS AUX LINE Co n auxinpur auxoureur RRL L OL 80 Minimum CONFUANT BRIDGED 5 m WZ f Ww Ww Sueur CHANNEL CHANNEL 2 Wires to Speaker Control Output The 12V output jack on the back of the amplifier can be used to turn on a variety of components equipped to be activated when they receive a 12V DC output Voltage is only delivered to the jack when the amplifier is on or active When the amplifier turns off the voltage ceases Before connecting another device to the 12 output please make sure that the device can accept 12V DC at 150ma To connect the output to another device you must access the output jack with a two conductor plug that fits into the 2 5mm jack Be aware that the tip of the plug will be If you are unsure about using this feature please contact an authorized SpeakerCraft dealer for assistance Connecting the Speaker Wires CAUTION Only make connect
24. e takes place in all other rooms For example if a listener changes from CD to Tuner in the bedroom the same change will be heard in the kitchen Note With the use of volume controls or speaker switchers the volume of each room can be controlled separately of the other rooms Multi Zone A system design that allows different sources to be played in each room A change in one room can be made without changing the other rooms For example the CD player can be heard in the bedroom while the kitchen is playing the tuner Bridging The combining of 2 channels to create one mono channel It is useful when more volume is needed in a particular area Source Component audio or video that provides an audio signal Examples are CD VCR DVD tape deck and tuner The source provides the audio information that is amplified by the Vital amplifiers Channel A distinct unit of the Vital amplifier that provides output to one speaker The input to each channel can be configured to select from the BUS INPUT the AUX INPUT or that channels unique CHANNEL INPUT Two adjacent channels can be bridged to provide higher power to one speaker Level Controls Allows any of the channels to be adjusted independently to raise or lower the output of each channel This may be used to control the speaker output in order to balance different rooms or areas of the system BUS AUX LINE Switch Allows each channel to play a variety of different inputs Depending
25. ions when the amplifier is turned off Using Standard Connections See Diagram 12 For best performance use high quality speaker cables The banana plug outputs on the back of the amplifier allow for a variety of ways to connect your speakers to the amplifier Diagram 12 Binding Post Detail Insert Speaker Wire or Spade Connector Ge To Tighten Insert Banana Plug Connecting the Line Level Audio Inputs CAUTION Only make connections when the amplifier is turned off There are three areas that an input signal can be connected BUS AUX and LINE IN Refer to the System Design Examples to determine which is best suited for your application Audio Outputs Sources connected to the BUS or AUX inputs can be forwarded to other components or amplifiers by connecting to the corresponding output sections to the right of each input section By using standard audio patch cables you can connect these outputs to the inputs of another amplifier Up to 5 SpeakerCraft amplifiers can be daisy chained together AC Power Plug the socket of the AC cord supplied with the amplifier into the receptacle on the rear of the amplifier Depending on your region plug the cord directly into a 1 20V 60 Hz 130V 50Hz or 240V 50 Hz wall outlet CAUTION Do not plug the amplifier into the preamplifier or receivers switched outlet If you wish to have the amplifier turn on once the preamplifier or receiver is activated use one of the
26. k where the terminals are located Dont place the amplifier near heat sources or in an area that it would be exposed to moisture YOU SHOULD KNOW The power supply is very large and therefore may cause a hum to be heard in some components if they are placed very close to the amplifier INSTALLATION CAUTION All connections and switching must be done with the amplifiers master power switch positioned to off Select the Power Mode Selection Refer to the Power Mode Selection area under system design and operations considerations to determine which setting to use to turn the amplifier on Once you have determined which mode you will be using set the switches as outlined in the following chart Selection Active Light Mode Constant Power Mode Selection Power button will light Set to Constant up when the amplifier is On Active and will Master Power Button off when it is off Depress to In position to turn amplifier On out position is Off Trigger Power Mode Selection Power button will Set to Trigger light up only when the amplifier receives a Master Power Button voltage indicating the Leave in the amplifier is On Active position Button Will turn off once the Depressed voltage has stopped Audio Sense Power Mode Selection Power button will light up only when the amplifier receives an audio signal to the main inputs indicating the amplifier is
27. on the switch position the channel amplifies the signal connected to the BUS input the AUX input or its own LINE input R R L L Switch When either a BUS or AUX input is selected this switch is used to direct the channel to play the left signal from the input L or the right signal from the input R or a combined right and left signal from the input R L Bus Input Allows the signal from a source to be distributed to any of the channels on the amplifier Auxiliary Inputs Allows a the signal from a secondary source to be distributed to any of the 12 channels of the amplifier Power Mode Selection There are three ways to turn the amplifier on and off Use the following list to decide which mode will work best for your application See Diagram 3 below 1 Constant Use this selection when you wish to manually turn the amplifier on and off by using the front mounted power button 2 Trigger Use this selection if you wish the amplifier turn on when it receives voltage 3 30V A C or D C from an external source and turn off once that voltage has stopped Some components have voltage outputs that are designed for this use In addition there are devices that can be used as part of an automated system that will provide voltage to enable the mode The voltage source must be connected to the trigger input jack on the back of the amplifier 3 Audio Sense Use this selection when you want the amplifier to turn on when the
28. rom the appliance 12 Cleaning The appliance should be cleaned only as recommended by the manufacturer 13 Nonuse Periods The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time 14 Object and Liquid Entry Care should be taken so that objects do not fall into and liquids not spilled into the inside of the appliance 15 Damage Requiring Service The appliance should be serviced by qualified service personnel when a The powersupply cord or the plug has been damaged or b Objects have fallen onto or liquid has been spilled into the appliance or c The appliance has been exposed to rain or d The appliance does not appear to operate nomally or exhibits a marked change in performance or e The appliance has been dropped or the cabinet damaged 16 Servicing The user should not attempt to service the appliance beyond those means described in the operating instructions All other servicing should be referred to qualified service personnel 17 Grounding or Polarization The precautions that should be taken so that the grounding or polarization means of an appliance is not defeated Thank you for purchasing the SpeakerCraft Vital digital amplifier 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
29. sitioned incorrectly Refer to installation instructions for proper settings Some or all of the internal fuses are blown Return the amplifier to your SpeakerCraft dealer for servicing No sound is heard Audio cable to the source component is on one orsome not connected properly or the cable is channels bad Use another cable that you know is good The Input Selection switch is positioned incorrectly Refer to installation instructions for proper settings The Bridging switch is positioned incorrectly Refer to installation instructions for proper settings Check the termination points of the speaker cable at both the amplifier and speaker A speaker is not working Make sure by connecting the channel to a speaker that you know to be working No sound is heard on one or some channels Continued The level adjustment on the channel is turned all the way down Turn it clockwise to raise the volume Some or all of the internal fuses are blown Return the amplifier to your SpeakerCraft dealer for servicing Hum or buzzing sound is heard The sound may be caused by a ground loop in the system Try to eliminate this by reversing the AC plugs of other components in the system Other causes include faulty cables Amplifier will not The amplifier must be plugged into a live turn on outlet The power switch on the front panel must be on The Power Mode switch may be positioned incorrectly S
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