Functions & Controls - Crunch GTR250.2 Owner's Manual

2 Channel Amplifier - Functions & Controls
X-OVER - Switch
Position HP - Highpass ist activated, the frequency of
the speakers is bounded below.
Position FULL - full range output signal
Position LP - Highpass ist activated, the frequency
of the speakers is bounded above.
LINE INPUT - Control
Adjusts line level (RCA) inputs from
0.2 to 4 Volts.
POWER
Power - LED
Indicates the amplifier is in
operation-mode.
INPUT HIGH LEVEL
Accepts speaker level inputs from
head units that do not have line
level (RCA) outputs. Connect the
center pole with ground chassis
of your car.
CAUTION: Never use RCA-Inputs
and Input Highlevel at the same
time.
INPUT - RCA
Allows to connect the amplifier with the head
unit via RCA cable.
OUTPUT- RCA
Provides a full range line level (RCA) output
that allows the use of additional amplifiers.
GTR250.2 – GTR550.2
OUTPUT INPUT
LEVEL
INPUT
L
- - - - - -
+ + +
L R
INPUT
HIGH LEVEL
4V 0.2V
R
PROTECT - LED
Indicates the fault operation of the amplifier. When the fault
conditions (overload, excessive heat or short circuit of speaker)
arise, the protection curcuit is engaged to protect both the
speakers and the amplifier against damage.
Attend in this case TROUBLE SHOOTING on page 23.
15
HIGH-/LOWPASS - ADJUST
HIGH PASS - The built in high pass filter is fully
variable from 60Hz to 1200Hz (1.2KHz), with a
roll off of 12dB/octave.
LOW PASS - The built in low pass filter is fully
variable from 40Hz to 150Hz, with a rolloff of
12dB/octave.
BASS BOOST - Control
Allows you to adjust the bass boost
from 0dB up to 12dB at 45 Hz.
X-OVER
HIGH LOW BASS
PAS S
PAS S BOOST
PROTECT
LP
HP
FULL
60Hz 1.2kHz 40Hz 150Hz 0dB 12dB