6
5
L
R
ACTIVE
PROTECTION
POWER
SpeakerCraft
BB275
SpeakerCraft
®
FUSE 8 AMP 250V
AC 120V 60HZ
SPEAKERS
MAIN
INPUT
+ LEFT --
LEFT
LEFT
RIGHT
RIGHT
CASCADE
OUTPUT
-- RIGHT +
SERIAL NUMBER
Model BB275
AUDIO SENSE
3-30V A/C D/C
TRIGGER
INPUT
3-30V A/C D/C
TRIGGER
INPUT
12V
CONTROL
OUTPUT
CONSTANT
Receptacle for A/C power cord
8 Amp A/C Fuse
Binding posts for speaker con-
nections
3.5mm Mini Plug socket for
12VDC control output
3.5mm Mini Plug socket for
voltage input
Power Mode Selection switch
Main Input Jacks. To connect
line level stereo sources
Cascade Audio Output Jacks. Connects to the line level
inputs of other amplifiers. Allows daisy chaining of up
to 5 SpeakerCraft
®
amplifiers
Master power switch. Turns
off power to amplifier and
Power Mode Circuitry
Active LED indicates that the
amplifier is working
Protection LED indicates that either a fault in
the wiring, the speaker, or the amplifier has
caused the amplifier to shut down.
Level Adjustment Screws are used to adjust the level
of the amplifier output so that you can match the
output levels of other amplifiers in your system.
Front and Rear Panel Detail
Diagram#2