Operation Manual

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bm Separate input gain/sensitivity
controls for channels 1+2 respectively allowing the matching of the
amplifier input section to the head-unit (pre-out) output voltage.
bn    Depending
on the selected switch setting the amplifier for channels 1+2 operates in
Fullrange, Highpass or Lowpass mode.
bo  Crossover filter frequency
control for channels 3+4 allowing the setting of the respective lowpass
cutoff frequency between 40 and 240Hz.
bp Crossover filter frequency
control for channels 3+4 allowing the setting of the respective highpass
cut-in frequency between 40 and 240 Hz.
bq Separate input gain/sensitivity
controls for channels 3+4 respectively allowing the matching of the
amplifier input section to the head-unit (pre-out) output voltage.
br  
Depending on the selected switch setting the amplifier for channels 3+4
operates in Fullrange, Highpass or Lowpass mode.
bs Low-level RCA signal input for
connection to head-unit (Rear) pre-out for a speaker pair or a subwoofer
that will be either driven in Fullrange or Lowpass amplifier mode.
bt Low-level RCA signal input for
connection to head-unit (Front) pre-out for a speaker pair that will be
either driven in Lowpass, Fullrange or Highpass amplifier mode.
1 Power connection terminal to chassis ground or
negative terminal of car battery (-12 V).
2 Remote switching contact for the automatic
(remote) turn-on / turn-off of the power amplifier from the head-unit's
remote (or antenna control) lead.
3 + 12 V Power connection terminal to positive terminal of car
battery.
4  Fuse for protection of the amplifier-internal electronics
against over-load or faulty operation / wrong manipulation.
5 A  A Speaker output terminals
for channels 1+2; i.e. one stereo speaker pair in fullrange, highpass or
lowpass mode (e.g. subwoofer). 

6 A   A Speaker output terminals
for channels 3+4; i.e. one stereo speaker pair in fullrange, highpass or
lowpass mode (eg. subwoofer). 

7 Amplifier status-LED – located on the side of the
amplifier – signalling normal operation – when lit green.
8 Lit red when amplifier is in protect mode due to
shorted speakers, overtemperature etc.
9  Crossover filter frequency
control for channels 1+2 allowing the setting of the respective lowpass
cutoff frequency between 40 and 240Hz.
bl Crossover filter frequency con-
trol for channels 1+2 allowing the setting of the respective highpass cut-in
frequency between 40 and 240 Hz.
  
