Front + Rear Panel Sp-A4150 - Spectron SP-A1500D Owner's Manual

CONNECTIONS & CONTROLS
FRONT PANEL SP-A4150
1 RCA LINE INPUTS 3/4-CH
Low-level stereo RCA inputs for connection with the front line-outs of the head-unit
2 RCA LINE INPUTS 1/2-CH
Low-level stereo RCA inputs for connection with rear the line-outs of the head-unit
3 INPUT GAIN CONTROL 1/2-CH
Input gain control potentiometer for the 1/2-CH amplifier section, to match the
output voltage of the headunit' s RCA line-outs to the amplifier input
4 BASS EQ CONTROL 1/2-CH
Control potentiometer for the adjustment of the bass boost level of the 1/2-CH
amplifier section - @45 Hz from 0 to 12dB
5 HIGHPASS FREQUENCY CONTROL 1/2-CH
Control potentiometer for the highpass crossover frequency – to cut off bass content
in the signal from 40 to 300 Hz
6 LOWPASS FREQUENCY CONTROL 1/2-CH
Control potentiometer for the lowpass crossover frequency – from 40 to 300 Hz
7 OPERATION MODE SWITCH 1/2-CH
Slide switch to select the operation mode of the electronic crossover of the 1/2-CH
amplifier section – to set the amp to highpass, lowpass or fullrange operation
8 RCA LINE OUPUTS
Low-level stereo RCA outputs for connection with another amplifier, which is
daisy chained, receiving the RCA input signal
9 INPUT MODE SWITCH
Slide switch to select the line input pair(s) driving channel 1/2/3/4 of this amplifier
Mode 2:
RCA input signal needs to be fed to both RCA inputs
Mode 3:
Input signal fed to CH1/2 drives both channel pairs
Mode 4:
Input signal fed to CH1/2 drives CH1/2 in stereo and CH3/4 in mono mode
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