18
20
Connect RCA outputs (CH1/2
and CH3/4) of the head unit with
LINE INPUT (CH1/2 and CH3/4)
of the amplifier.
FUSE
GND
REM
BATT+ 12V
POWER INPUT
SPEAKER OUTPUT
+ CH3 –
+ CH4 –
+ MONO BRIDGED –
+ CH1 –
+ CH2 –
e13
021592
Subwoofer 2
4 - 8 Ohm
Subwoofer 1
4 - 8 Ohm
X-Over-Switch (CH1/2 Subwoofer 1 & CH3/4 Subwoofer 2)
• By using the Mono/Subwoofer-mode, set the switch to the LP/BP-position (LOW PASS/BAND PASS), so the higher frequencies
are cut off. The cut-off frequency should be between 60Hz - 100Hz. Adjust the level with the LOW PASS-controller. In LP/BP-
Mode the Highpass-controller (HI PASS) is working also as Subsonic-Filter. The Subsonic frequency should be between 15Hz -
40Hz, depending on the size of the installed subwoofer.
Input Level (CH1/2 Subwoofer 1 & CH3/4 Subwoofer 2)
• Turn the LEVEL control of the amplifier to 6V position.
• Turn the head unit volume control to about 80% - 90% of its full setting.
• Turn the LEVEL control clockwise until you hear some distortion.
• Then turn back the LEVEL control slightly until you can hear a clean sound.
Bass EQ (CH1/2 Subwoofer 1 & CH3/4 Subwoofer 2)
• This Controller regulates the Bass Boost from 0 - 18 dB.
The controls of CH1/2 and CH3/4 should be set to the same values to avoid interferences. Most suitable therefor is a
measuring tool like an oscilloscope and test signal like a sine.
Caution!
Please use the Bass-EQ carefully. The additional boost may result in clipping or overload.
Speaker & RCA Connections
TXi 4400 / TXi 6400 / TXi 8400
3-Channel-Mode 2 Mono Subwoofer bridged
RCA & Speaker wiring:
• Connect the LINE INPUT of the amplifier to the head unit line output with two appropriate good quality RCA cables.
• Connect the speakers/subwoofer with appropriate wires to the terminal block (SPEAKER OUTPUT - CH1/2 - Mono b
and the subwoofer with CH3/4 - Mono b) of the amplifier.
• The minimum final subwoofer impedance must not be lower than 4 Ohms per channelpair. Too low speaker loads result in too
high heat dissipation and may cause the amplifier run into protection.
• Please observe correct speaker channels and polarity as printed by the speaker terminal
Caution!
Do not connect speaker (-) to the ground or vehicle's chassis.
