Operation Manual

30
AMPLIFICATION MODE SWITCH (3CH/ 4CH)
Depending on the selected switch setting the amplifier for channels 3+4
operates in Fullrange or llighpass mode.
POWER LED
Amplifier status-LED - located on the side of the amplifier - signalling nor-
mal operation - when lit green.
PROTECT LED
Lit red when amplifier is in protect mode due to shorted speakers, over-
temperature etc.
FUSE
Fuse for protection of the amplifier-internal electronics against over-load
or faulty operation / wrong manipulation.
+12 V
+ 12 V Power connection terminal to positive terminal of car battery.
REMOTE/REM
Remote switching contact for the automatic (remote) turnon / turn-off of
the power amplifier from the head-unit's remote (or antenna control) lead.
GROUND/GND
Power connection terminal to chassis ground or negative terminal of car
battery (-12 V).
 L  und  R  (1CH/2 CH)
Speaker output terminals for channels 1+2; i.e. one stereo speaker pair in
fullrange or highpass mode (e.g. subwoofer).
 L  und  R  (3CH/ 4CH)
Speaker output terminals for channels 3+4; i.e. one stereo speaker pair
in fullrange mode or one single speaker connected in lowpass mode
connected in bridged mode (eg. subwoofer). Minimum impedance in
bridged mode is 4 Ohms!
INPUT L+R (1CH/2 CH)
Low-level RCA signal input for connection to head-unit (Front) printout
for a speaker pair that will be either driven in Fullrange or Highpass
amplifier mode.
INPUT L+R (3CH/ 4CH)
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.
AMPLIFICATION MODE SWITCH (1CH/2 CH)
Depending on the selected switch setting the amplifier for channels 1+2
operates in Fullrange, or Lowpass mode.
INPUT GAIN (1CH/2 CH) + (3CH/ 4CH)
Separate input gain/sensitivity controls for channels 1+2 and 3+4
respectively allowing the matching of the amplifier input section to the
head-unit (pre-out) output voltage.
HIGHPASS FREQ. (1CH/2 CH) Crossover filterfrequeney
control for channels 1+2 allowing the setting of the respective highpass
cut-in frequency between 40 and 240 Hz
LOWPASS FREQ. (1CH/2 CH) Crossover filter frequency
control for channels 1+2 allowing the setting of the respective lowpass
cutoff frequency between 50 and 200Hz
LOWPASS FREQ. (3CH/ 4CH) Crossover filter frequency
control for channels 3+4 allowing the setting of the respective lowpass
cutoff frequency between 50 and 200Hz
HIGHPASS FREQ. (3CH/ 4CH) Crossover filterfrequeney
control for channels 3+4 allowing the setting of the respective highpass
cut-in frequency between 40 and 240 Hz
B3
CONNECTIONS AND CONTROLS AXTON C509
17
16
15
14
13
12
11
10
9
8
3
2
1
7
6
5
4
C109-509 Manual DEF.indd 30C109-509 Manual DEF.indd 30 15.02.2005 15:30:31 Uhr15.02.2005 15:30:31 Uhr