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Hifonics Mercury II Manual

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Connect Stereo RCA output (L/R or SUB OUT) of the
headunit with the LINE IN CH3/4 of the amplifier
Subwoofer 2
4 – 8 Ohms
R L
Subwoofer 1
4 – 8 Ohms
Switch setting CH1/2: DUPE
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 CH 1 and CH 2 of the amplifier with appropriate high-value
RCA cables. If a separate SUB OUT from your headunit is available, use this as LINE OUT.
• Connect the subwoofers with the SPEAKER OUTPUTS CH1/2 + BRIDGED - and CH3/4 + BRIDGED -.
• Ensure by any means, that the total impedance load of all subwoofers per channelpair is not lower than 4 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 INPUTswitch.
CROSSOVER SETTINGS CH3/4 (SUBWOOFER 2)
• In the mono/subwoofer mode the X-OVER MODE switch must set to the LPF/BPF position (Lowpass/Bandpass mode), thereby the
higher frequencies will be eliminated. The cut-off frequency ist adjustable with the LPF controller and should be set between
60 to 100 Hz, depending on the size of the subwoofer.
• In the lowpass mode the HPF controller works also as subsonicfilter, that eliminates the ultra-low, not hearable and harmful
frequencies to generate a bandpass signal (Bandpass mode). The subsonic frequency should be set between 15 to 40 Hz, depending
on the size of the subwoofer. NOTE: If this value is higher than the lowpass setting, no sound is hearable.
CROSSOVER SETTINGS CH1/2 (SUBWOOFER 1)
• Set the X-OVER MODE switch to DUPE. The DUPE mode passes (duplicate) the signal from CH3/4 to the line input section of CH1/2.
All controllers and settings except the LEVEL controller are then without function. The LINE IN RCAs of CH1/2 are deactivated.
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 (SUBWOOFER 2)
• The BOOST controller adjusts the bass enhancement between 0db and +12dB @ 50 Hz. In the DUPE-mode the boost controller also
affects the bass enhancement on the channel pair CH1/2 (Subwoofer 1).
• 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
• The enclosed remote BASS LEVEL Controller adjusts the bass-level e.g. from the driver’s seat.
In the DUPE-mode the bass level controller also affects the bass level on the channel pair CH1/2 (Subwoofer 1).
Please use only the enclosed controller and cable.
ENG|MERCURY IV
26
INTERCONNECTION EXAMPLE 2-Channel Mode: 2 x Mono Subwoofer bridged
Connect the bass level
controller on the amplifier
with the enclosed cable.
… 26 …


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