B2 Audio Duo, Owner'S Manual, Page: 4 / 10

INPUT
Signal input from the head unit. A minimum level
input of 0.2V is essential for correct operation.
OUTPUT
Output RCA for signal routing to another amplifier.
POWER & PROTECTION INDICATOR
Power LED, Blue-lit shows correct operation.
Protect LED, Red-lit shows general malfunction,
faulty connection or thermal protection.
GAIN (6V ~ 0.2V)
Matching of the output voltage from the head unit’s
RCA line-outs to the input section.
SUBSONIC FILTER (10Hz ~ 50Hz @ 18dB/Oct)
Adjusts the subsonic cut off point to eliminate
frequencies within the filter’s range.
REMOTE LEVEL CONTROL PORT
Connection of external level control.
(The Better Bass Remote can be connected for additional features).
LOW PASS FILTER (50Hz ~ 250Hz)
Adjusts the cut off point for the low pass filter
within the filter’s range.
LOW PASS MULTIPLIER (x 1, x 20)
Multiplies the low pass frequency by x 1, x 20.
The range of the filter in x 20 mode is 1KHz ~ 5KHz.
BASS BOOST
Variable bass boost with 0-18 dB @ 35Hz ~ 120Hz.
HIGH PASS FILTER (20Hz~250Hz)
Adjusts the cut off point for the high pass filter
within the filter’s range.
HIGH PASS MULTIPLIER (x 1, x 20)
Multiplies the high pass frequency by x 1, x 20.
The range of the filter in x 20 mode is 400Hz ~ 5KHz.
FILTER SELECTOR SWITCH
Sets the filter in either High Pass (HPF), Full Range
or Low Pass (LPF) operation.
4
500Hz
PR OTE C T
POWE R
20Hz 50Hz 10Hz 0.2V
6V
CH2
GAIN SUBSONIC
35Hz
LPF
x10 x1 x10
LPF
FULL
HPF
500Hz
x1
50Hz
HPF BASS BOOST
CH2
120Hz 18dB 0dB
REMOTE
CH1
INPUT
CH1
OUTPUT
2. Panel layout
Duo