Owner`s manual

RL RR

Connect the Stereo RCA outputs (FL/FR & RL/RR)

of the headunit withthe LINE IN CH1 / CH2

and CH3 / CH4 of the amplifier

FR FL

Speaker

left

2 – 8 Ohms

Speaker

right

2 – 8 Ohms

Switch setting CH1/2: HPF oder FULL

Switch setting CH3/4: LPF/BPF

Switch setting INPUT: 4 CH

INTERCONNECTION

• Connect the RCA lineouts of the headunit with the RCA jacks LINE IN of the amplifier with appropriate high-value RCA cables.

If a separate SUB OUT from your headunit is available, use this for the LINE IN CH3/4 on the amplifier.

• Connect the speakers with SPEAKER OUTPUT + CH 1 - and + CH 2 -, and the subwoofer with the SPEAKER OUTPUTS CH3/4

+ BRIDGED - of the amplifier.

• Ensure by any means, that the total impedance load of all speakers per channelpair (CH1 & CH2) is not lower than 2 ohms and the total

impedance load of the subwoofer (CH3 & CH4) is not lower than 4 ohms. Too low impedance cause high temperature and will shut down

the amplifier operation.

INPUT SWITCH

• Select the 4CH position on the INPUT MODE switch. If there is only one RCA stereo audio cable from the headunit available, connect

the CH1/2 RCA line inputs and select the 2CH position.

CROSSOVER SETTINGS CH1/2 (STEREO SYSTEM)

• See the regarding notes on page 22.

LEVEL CONTROLLER CH1/2 (STEREO SYSTEM)

• See the regarding notes on page 22.

CROSSOVER SETTINGS CH3/4 (SUBWOOFER )

• See the regarding notes on page 23.

LEVEL CONTROLLER CH3/4 (SUBWOOFER )

• See the regarding notes on page 23.

BOOST CONTROLLER CH3/4 (SUBWOOFER )

• The BOOST controller adjusts the bass enhancement between 0db and +12dB.

• A too high bass boost may cause clipping/distortion and damage on the loudspeakers and also may harm your hearing abilities.

Use this controller carefully!

REMOTE BASS LEVEL CONTROLLER CH3/4 (SUBWOOFER )

• The enclosed remote BASS LEVEL Controller adjusts the bass-level e.g. from the driver’s seat.

Please use only the enclosed controller and cable.

MERCURY IV|ENG

EXAMPLE 3-Channel Mode: 1 x Stereo System & 1 x Mono Subwoofer bridged

Subwoofer

4 – 8 Ohms

Connect the bass level

controller on the amplifier

with the enclosed cable.