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CAUTION: All connections and switching must be done with the amplifier’s
master power switch positioned to “off”. 

Select the Power Mode Selection

Refer to the Power Mode Selection area under installation 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:

Switch Settings

Active Light

Selection
Mode

Constant

Will light up when the
amplifier is “On/Active”
and will go off when it
is “off”.

Power Mode Selection = Set to
“Constant”.
Master Power Button = Push to “In”
position to turn amplifier “On”, out
position is “Off”.

Trigger

Will light up only when
the amplifier receives an
audio signal to the
main inputs indicating
the amplifier is
“ON”/active. Will turn
off three minutes after
the signal has stopped.

Power Mode Selection = Set to
“Trigger”.
Master Power Button = Leave in the
“On” position (Button in).

Audio
Sense

Will light up only when
the amplifier receives a
voltage indicating the
amplifier is “On/Active”.
Will turn off once the
voltage has stopped.

Power Mode Selection = Set to “Audio
Sense”.
Master Power Button = Leave in the
“On” position (Button in).

INSTALLATION

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Placement

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: 

• Don’t block the ventilation holes on the top or bottom of the amplifier.

Never place it on carpeting or similar material.

• Don’t place the amplifier in any other position other than horizontal

with the feet down. Never place on its side or resting on the back
where the terminals are located.

• Don’t 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 CONSIDERATIONS

Summary of Contents for Big Bang BB1235

Page 1: ...SpeakerCraft Big Bang Power Amplifiers B B 1 2 3 5 O w n e r s M a n u a l ...

Page 2: ...e speaker outputs by using SpeakerCraft s InstaLLock Connector purchased separately InstaLLock Connectors elimi nate the hassle of connecting multiple wires onto the back of the amplifier Instead they can be easily connected to the InstaLLock Connector which is later plugged into the back of the amplifier InstaLLock Connectors can be purchased from your SpeakerCraft Dealer Multiple Power Modes and...

Page 3: ...r a fault in the wiring the speaker or the amplifier has caused the amplifier to shut down Active LED indicates that the amplifier is working 3 Diagram 1 Front Panel Master power switch Turns off power to amplifier and Power Mode Circuitry ...

Page 4: ...ows you to easily double the power output by coupling two chan nels together 5 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 audio source to be played on any channel that is switched to AUX Bus outputs allow the bus inputs to be sent to other amplifier...

Page 5: ...gn that plays the same source at the same time in all rooms If a change is made in one room the same change 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 sep arately of the other rooms Multi Zone A system...

Page 6: ...e 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 pre...

Page 7: ...SPEAKER AUDIO SOURCES CD Player L R OUTPUT Tape Deck L R OUTPUT DVD Player L R OUTPUT 11 Diagram 4 Multi Room Installation Room 1 VOLUME CONTROL LEFT SPEAKER RIGHT SPEAKER Room 2 VOLUME CONTROL LEFT SPEAKER RIGHT SPEAKER Room 3 VOLUME CONTROL LEFT SPEAKER RIGHT SPEAKER TAPE INPUT CD INPUT DVD INPUT L R L R L R L R OUTPUT PREAMPLIFIER RECEIVER ...

Page 8: ...UTPUT Tape Deck L R OUTPUT DVD Player L R OUTPUT CD Player 2 L R OUTPUT 13 Diagram 5 Multi Zone Installation 1 ZONE 1 VOLUME CONTROL LEFT SPEAKER RIGHT SPEAKER VOLUME CONTROL LEFT SPEAKER RIGHT SPEAKER VOLUME CONTROL LEFT SPEAKER RIGHT SPEAKER TAPE INPUT CD INPUT DVD INPUT L R L R AUX INPUT L R L R L R OUTPUT PREAMPLIFIER RECEIVER L R OUTPU L R OUTPU L R OUTPU ...

Page 9: ...UT TUNER INPUT TAPE INPUT Tuner L R OUTPUT Tape Deck L R OUTPUT 15 Diagram 6 Multi Zone Installation 2 ZONE 1 ZONE 2 ZONE 3 VOLUME CONTROL LEFT SPEAKER RIGHT SPEAKER VOLUME CONTROL LEFT SPEAKER RIGHT SPEAKER VOLUME CONTROL LEFT SPEAKER RIGHT SPEAKER ZONE 1 OUTPUT L R ZONE 2 OUTPUT L R ZONE 3 OUTPUT L R CD INPUT DVD INPUT 6 STEREO PREAMPLIFIERS OR MULTIZONE PREAMPLIFIER AUDIO SOURCES CD Player L R ...

Page 10: ...ayer L R OUTPUT DVD Player L R OUTPUT VCR L R OUTPUT 17 Room 1 VOLUME CONTROL LEFT SPEAKER RIGHT SPEAKER Room 2 VOLUME CONTROL LEFT SPEAKER RIGHT SPEAKER Room 3 VOLU LEFT SPEAKER VCR INPUT MULTI ROOM OUTPUT L R L R SUBWOOFER OUTPUT SPEAKER OUTPUTS HOME THEATER RECEIVER LEFT CENTER RIGHT REAR RIGHT REAR LEFT LEFT SPEAKER RIGHT SPEAKER REAR LEFT SPEAKER REAR RIGHT SPEAKER SUBWOOFER CENTER SPEAKER Di...

Page 11: ...er L R OUTPUT DVD Player L R OUTPUT VCR L R OUTPUT 19 Diagram 8 Home Theater Installation VCR INPUT L R SUBWOOFER OUTPUT CHANNEL OUTPUTS HOME THEATER RECEIVER PROCESSOR LEFT CENTER RIGHT REAR RIGHT REAR LEFT LEFT SPEAKER RIGHT SPEAKER REAR LEFT SPEAKER REAR RIGHT SPEAKER CENTER SPEAKER SUBWOOFER ...

Page 12: ...io Sense Will light up only when the amplifier receives a voltage indicating the amplifier is On Active Will turn off once the voltage has stopped Power Mode Selection Set to Audio Sense Master Power Button Leave in the On position Button in INSTALLATION 21 Placement DO Place the amplifier with the feet resting on a solid flat level surface Place the amplifier in a well vented area to provide prop...

Page 13: ...ction 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 connect ed to the AUX INPUT or LINE will play source connected to the LINE IN 2 The BUS and AUX inputs each have a left and right input The left right or combined left and...

Page 14: ...ault 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 ...

Page 15: ...SpeakerCraft customer service at 800 448 0976 TROUBLESHOOTING No sound is heard on all channels Audio cable to the source component is not connected properly or the cable is bad Use another cable that you know is good The Input Selection switch is posi tioned incorrectly Refer to installation instructions for proper settings Some or all of the internal fuses are blown Return the amplifier to your ...

Page 16: ... 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 volt age inputs in excess of the rated maximum of the unit or service repair or modification of the product which ...

Page 17: ...SpeakerCraft LIT 8 00 940 Columbia Ave Riverside CA 92507 4492 800 448 0976 Fax 951 787 8747 www speakercraft com ...

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