RL
RR
Connect the stereo RCA output
(FL/FR & RL/RR) of the headunit with LINE IN
CH1/2 and CH3/4 of the amplifier
Loudspeaker
rear / left
2 – 8 Ohms
Loudspeaker
rear / right
2 – 8 Ohms
FR
FL
Loudspeaker
front / left
2 – 8 Ohms
Loudspeaker
front / right
2 – 8 Ohms
Switch setting CH1/2: HPF or FULL
Switch setting CH3/4: HPF or FULL
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.
• Connect the front- and rear speakers with the speaker outputs (SPEAKER O 1CH -, + 2CH - and + 3CH -, + 4CH -).
• Ensure by any means, that the total impedance load of all speakers is not lower than 2 ohms. Too low impedance cause high temperature
and will shut down the amplifier operation.
• Always ensure the correct polarity of the speakers. The interchange of plus and minus cause total loss of bass playback and could
damage the speakers.
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 & CH3/4
• By using bigger speakers (more than 20cm) you can set the X-OVER MODE switch to the FULL position (Full Range Signal).
• By using smaller speakers (8.7cm - 16cm) you must set the X-OVER MODE switch to the HPF Position (Highpass Mode) to avoid any
damage by lower frequencies on the speakers. The cut-off frequency is adjustable with the HPF controller and should be set between
60Hz to 150Hz, depending on the size of the speakers.
• The LPF Controller is not in use in this interconnecting example.
LEVEL CONTROLLER CH1/2 & CH3/4
• Turn the LEVEL controller of the amplifier to the MIN. position.
• Turn the volume controller of the headunit to 80 - 90% of its full setting.
• Turn the LEVEL controller clockwise until you hear some distortion.
• Then turn back the LEVEL controller slightly until you hear a cleaner sound.
BOOST CONTROLLER CH3/4
• The BOOST controller must be turned to 0 dB position in this interconnecting example .
REMOTE BASS LEVEL CONTROLLER
• The enclosed remote BASS LEVEL Controller is not in use in this interconnecting example.
MERCURY IV
|ENG
25
INTERCONNECTION EXAMPLE 4-Channel Mode: 2 x Stereo System (Front & rear)
