Owner`s manual

Cable Connections:

• Connect the head unit subwoofer line output with good quality RCA to RCA cables and

Y-Connectors (Split signal) to the AMPLIFIER INPUT CH1/2 & CH3/4 of the amplifier.

• Connect the Subwoofers with the terminal blocks (SPEAKER OUTPUT + BRIDGED - from CH 1/2 and

+ BRIDGED - from CH3/4) of the amplifier.

• The minimum final speaker impedance must not be below 4 Ohm per channel pair. 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.

•

2-Channel-Mode: 2 Subwoofer / Mono bridged

FILTER - Switch & Control (CH1/2 & CH3/4)

• In 2-Channel-Mode in Mono select FILTER to "LP", which eliminates the higher frequencies.

The recommended crossover frequency ranges between 60 - 100Hz, depending on the size and response of the Subwoofer.

The Lowpass adjustment can be done with the XOVER control.

GAIN - Control (CH1/2 & CH3/4)

• Turn the GAIN controls on the amplifier to "MIN." position.

• Turn the head unit volume control to about 80-90% of its full setting.

• Turn the GAIN controls clockwise until you hear some distortion.

• Then turn back the GAIN controls slightly until you can hear clean sound.

BASS-EQ - Control (CH1/2 & CH3/4)

• The BASS-EQ control increases the bass level from "+/– 18dB". Caution! Please use the Bass-Boost carefully.

4-Channel Amplifiers - Speaker & RCA-Connection

Q 300.4

Caution

Please avoid to connect speaker (-) to the ground or vehicle chassis.

SUBWOOFER

OUTPUT

2 x Y-CONNECTORS

SUBWOOFER

2 OHM min.

SUBWOOFER

2 OHM min.