12
FUNCTIONAL INSTRUCTIONS
FEATURES AND OPERATIONAL CONTROLS
A 690 RXA
300 WATTS MAX.
FUSE
A U T O
T U R N O N
I N P U T
L E V E L
P H A S E
S H I F T
PROTECT
POWER
MIN.
0°
180°
LOW
HIGH
REM
DC OFFSET
AUTO
MAX.
50 Hz
150 Hz
B A S S
B O O S T
L O W
P A S S
O U T P U T
L E V E L
R E M O T E
0 dB
12 dB
POWER
INPUT
AUDIO
INPUT
2
1
4
3
5
The
OUTPUT LEVEL
controller allows you to adjust the volume to match the sound system with the head unit. Please avoid
any distortions while listening. If the enclosed bass remote (#8) is connected, the
OUTPUT LEVEL
controller is without function.
The
LOW PASS
controller (low pass filter) adjusts the cut-off point of the frequency range to above. The cut-off frequency is
continuously adjustable from 50 Hz to 150 Hz.
The
PHASE SHIFT
switch allows to switch the phase from 0° to 180°. Hence, you are able to adjust the subwoofer perfect to
the vehicle’s acustics.
The
BASS BOOST
controller allows to enhance the bass continuously from 0dB to +12dB at 45 Hz.
The
INPUT LEVEL
switch determines the type of input signal. If you want to operate the sound system with a linear preamplifier
signal (low level), the switch must be in position
LOW
. If you want to operate the sound system with the speaker outputs of the
head unit (high level), the switch must be in position
HIGH
. Please refer to the instructions under #9.
4
5
6
1
2
3
7
8
9
