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BT220
Bass Amplifier
7
System Block Diagram:
BUFFER
INPUT
-15dB PAD
LEVEL
LOW LOW
MID
HIGH
MID
HIGH
CHANNEL
SWITCH
PRE
LIMIT
POST
MUTE
EQ
NOISE
GATE
GAIN
DISTORTION
LEVEL
TUNER
A BC D EF G
SHAPE
LEVEL
OCTAVE
MASTER
BALANCED
LINE OUT
VOLUME
BALANCED
LINE OUT
GND/
GND
LIFT
EFFECTS
BLEND
EXTERNA
L
SPEAKER
SEND
HEAD
PHONES
POWER
AMP
SPEAKER
ATTENUATOR
RETURN
CD
INPUT
EFFECTS LOOP
FOOT
SWITCH
SWITCHING
CIRCUITRY