3-Channel-Mode: 2 Speakers/Stereo & 1 Subwoofer / Mono Bridged - Crunch GTR420.2 Owner's Manual

4 Channel Amplifier - Speaker- & RCA-Connection
3-Channel-Mode: 2 Speakers/Stereo & 1 Subwoofer / Mono bridged
X-OVER Switch & Control (Front- or Rearspeakers on CH1/2)
• See page 19.
X-OVER Switch & Control (Subwoofer on CH3/4)
• See page 17.
INPUT LEVEL - Control (CH1/2 & CH3/4)
• See page 19.
TWIN SUB - Switch CH1/2
• The TWIN SUB - Switch must be set in this configuration to "OFF" - Position.
BASS BOOST - Control (Subwoofer on CH3/4)
• The BASS BOOST - Control adjusts the bass level at 45 Hz from 0dB up to 12dB. Caution! Please use the Bass-Boost carefully.
INPUT MODE - Switch
• The INPUT MODE - Switch must be in "2CH" - position (if LINE INPUT is occupied only on CH1/2) or to "4CH" - position (if LINE INPUT
is occupied on all four jacks).
BASS REMOTE
Connect RCA outputs from
head-unit with RCA inputs
(LINE INPUT CH1/2 and CH3/4).
CH1 / CH2 CH1 / CH2 CH3 / CH4 CH3 / CH4
GTR440.4 – GTR640.4
Cable connection
• Connect the INPUT of the amplifier to the head unit line output with good quality RCA cables.
By connecting the RCA jacks OUTPUT with a additional amplifier, a full range signal will be
provided to the amplifier.
• Connect the speakers with the terminal block (CH1 +/- & CH2 +/ - SPEAKER OUTPUT and
the subwoofer with CH3/4 + BRIDGED - SPEAKER OUTPUT) of the amplifier.
• The minimum final speaker impedance must not be below 2 Ohm per channel and 4 Ohm
(Subwoofer) per channelpair. Too low speaker loads result in too high heat dissipation and
may cause the amplifier run into protection.
• Please observe speaker channel and polarity as printed by the speaker terminal block.
• Incorrect phasing of the speakers results in total loss of bass response.
Please avoid to connect speaker (-) to the ground or vehicle chassis.
21
Caution
Speakers 2 - 8 Ohm
Subwoofer
4 - 8 Ohm