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CONNECTIONS AND CONTROLS A470-170
GROUND/GND
1
Power connection terminal to chassis ground or
negative terminal of car battery (-12 V) .
2
REMOTE/REM
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 .
+12 V
3
Power connection terminal to positive terminal of car battery .
4
FUSE
Fuses for protection of the amplifier-internal electronics
against over-load or faulty operation/wrong manipulation .
L und R (3CH/ 4CH)
5
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 2 ohms!
L und R (1CH/2 CH)
6
channels 1+2; i .e . one stereo speaker pair in fullrange or highpass mode
(e .g . subwoofer) .
7
L und R (5 CH)
subwoofer (2 ohms min . impedance) .
8
PROTECT LED
Lit red when amplifier is in protect mode due to
shorted speakers, overtemperature etc .
9
POWER LED
Amplifier status-LED – located on the side of the
amplifier – signalling normal operation – when lit green .
bl
AMPLIFICATION MODE SWITCH (5 CH)
selected switch setting the amplifier for channel 5 operates in Fullrange
or Lowpass mode .
bm
LOWPASS FREQ. (5 CH)
channel 5 allowing the setting of the respective lowpass cutoff frequency
between 40 and 240Hz .
18
18
A470-170 Manual DEF.indd 18
Speaker output terminals for
Speaker output terminals for
Speaker output terminals for
Depending on the
Crossover filter frequency control for
SUBSONICFILTER (5 CH)
bn
adjustable from 20 – 50 Hz .
bo
INPUT GAIN (5CH)
Separate input gain/sensitivity controls for
channel 5 .
bp
LOWPASS FREQ. (3CH/4 CH)
for channels 3+4 allowing the setting of the respective lowpass cutoff
frequency between 40 and 240Hz .
AMPLIFICATION MODE SWITCH (3CH/ 4CH)
bq
the selected switch setting the amplifier for channels 3+4 operates in
Fullrange, Highpass or Lowpass mode .
HIGHPASS FREQ. (3CH/ 4CH)
br
for channels 3+4 allowing the setting of the respective highpass cut-in
frequency between 40 and 240 Hz .
bs
INPUT GAIN (3CH/ 4CH)
for channels 1+2 .
bt
HIGHPASS FREQ. (1CH/2 CH)
for channels 1+2 allowing the setting of the respective highpass cut-in
frequency between 40 and 240 Hz .
AMPLIFICATION MODE SWITCH (1CH/2 CH)
bu
the selected switch setting the amplifier for channels 1+2 operates in
Fullrange or Highpass mode .
INPUT GAIN (1CH/2 CH)
cl
for channels 1+2 .
INPUT (5CH)
cm
Low-level RCA signal input for connection to
head-unit (Sub) pre-out .
INPUT L+R (3CH/4 CH)
cn
to head-unit (Front) pre-out .
co
INPUT L+R (1CH/ 2CH)
to head-unit (Rear) pre-out .
The subsonic filter of the sub channel,
Crossover filter frequency control
Depending on
Crossover filter frequency control
Separate input gain/sensitivity controls
Crossover filter frequency control
Depending on
Separate input gain/sensitivity controls
Low-level RCA signal input for connection
Low-level RCA signal input for connection
12.09.2007 7:53:19
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