Crunch BlackMaxx MXB 1750 Di, Owner'S Manual, Page: 18 / 28

18
FUNCTIONAL INSTRUCTIONS
FEATURES AND OPERATIONAL CONTROLS
POWER INPUT SPEAKER OUTPUT
LOW
PASS
SUB
SONIC LEVEL
INPUT OUTPUT
L
R
L
R
BASS
BOOST
REMOTE
CONTROL
POWER
PROTECT
MIN MIN 20Hz 50Hz 30Hz 250Hz 0dB 18dB
INPUT
LEVEL
LOW
HIGH
0°
180°
PHASE
SHIFT
– – + +
MODE
FUSE
+12V REM GND
MASTER
SLAVE
BRIDGE
LINK
2
3
4
1
5
6
The LEVEL controller adjusts the input sensitivity of the amplifier, to adjust the audio signal of the headunit. The input sensitivity
is adjustable from 5 Volts (MIN) to 0.2 Volts (MAX).
The SUB SONIC controller (Subsonic filter) limits the ultralow and not hearable frequencies of the audiosignal to below, to avoid
a mechanical and electical overloading on the subwoofer. The cut-off frequency is adjustable from 20 to 50 Hz and depends on
the size of the subwoofer. Is this controller adjusted higher that the LP controller, no sound is hearable.
The INPUT RCA jacks must be connected with the RCA output jacks of the headunit. Refer to secion #2 above. If your headunit
is not equipped with pre-amplifier outputs, you can use its speaker output cables as input signal.
Proceed as follows:
With the INPUT LEVEL push button you are able to select the input sensitivity of the amplifier.
Position LOW (2V to 0,2V) is suited for low level pre-amplifier output singals.
HIGH (8V to 2V) is suited for high level loudspeaker output singals.
POWER/PROTECT
If the POWER LED lights up, the amplifier is ready for operation.
If the PROTECT LED lights up, a malfunction is indicated. Refer in this case to the chapter TROUBLE SHOOTING.
The OUTPUT RCA jacks are suitable to connect an additional amplifier with a full range signal.
1 7 6 10 4 9 3 8 5 2
High Level speaker cables as signal input:
Solder the ends of the loudspeaker cables of the headunit with
common RCA connectors (separately available) and connect
them with INPUT of the amplifier.
NOTE: Set the push button LEVEL INPUT on Position HIGH.
Never push the LEVEL INPUT push button while operation.
SPEAKER CABLES
SHIELD
TO THE LINE IN ON THE
AMPLIFIER
CORE CONDUCTOR