Auto Turn On; Input Sensitivity - Hifonics VRX1000A User Manual

AUDIO SIGNAL CABLES
When installing the audio cables between the RCA outputs of the head unit and the RCA inputs of the amplifier
[ 7 ], the audio and power supply cables should, if possible, not be routed along the same side of the vehicle.
We recommend a separated installation, e.g. routing the power cable through the cable channel on the left side
and the audio cables through the cable channel of the vehicle on the right side or vice versa. This prevents
interferences due to crosstalk into the audio signal.
HI LEVEL INPUT
The HI LEVEL INPUT [ 8 ] is suitable to connect the device input with speaker wires, if your head unit is not
equipped with pre-amplifier RCA outputs. Extend therefor every regarding speaker cable from your head unit
with appropriate speaker cables from your car audio retailer to the mounting location of the amplifier. Then con-
nect the each matching loudspeaker cable with the cables of the included High INPUT SENS. jack.
CAUTION: Never use the Hi Level Input and the RCA inputs at the same time. This may damage the
device seriously.

AUTO TURN ON

Push the AUTO TURN ON switch [ 9 ] to ON position. The amplifier detects now a voltage rise (6 Volts) over
the connected input signal on the HI LEVEL INPUT [ 8 ] when the head unit will be switched on. Hence, the
amplifier will also be turned on. As soon as the head unit will be turned off, the amplifier turns also automatically
off. In this case the turn-on connection [ 3 ] is not needed.
NOTE: The AUTO TURN ON function usually works with 90% of all head units, because they are equipped
with "High Power"-outputs. Only with a few older and still existing head units the Auto Turn On function is not
working.

INPUT SENSITIVITY

Turn the INPUT SENS. [ 10 ] controller of the amplifier to the MIN position. Then turn the volume controller of
the head unit to 80 - 90% of its full setting. Now turn INPUT SENS. [ 10 ] clockwise until you hear some distor-
tion. Then turn back INPUT SENS. [ 10 ] slightly until you hear a cleaner sound.
PHASE
POWER
LOW PASS
0°
180°
50Hz 150Hz
PROTECT
ACTIVE SUBWO O FE R SYSTE M
OFF
150 WATTS RMS / 300 WAT TS MAX.
ON
AUTO TURN ON
9
10
10
VRX1000A
BASS BOOST INPUT SENS.
0dB 12dB MIN MAX
8 7
LOW LEVEL
INPUT
REMOTE
R+ R–
L+ L–
HI LEVEL INPUT
Pin assignment:
white = L +
black = L –
grey = R +
black = R –
POWER
FUSE
R
L
GND
REM
+12V