Hifonics MERCURY IV Owner's Manual download pdf (Page 21)

The LINE OUT RCA jacks provide a linear fullrange audiosignal to supply an additional amplifier.

The HPF controller (HIGH PASS) adjusts the cut-off point of the frequency range to below. The cut-off frequency is continuously

adjustable from 10 Hz to 1200 Hz (1.2 kHz).

The BOOST controller defines the bass bosst from 0 to 12dB @ 50Hz.

MERCURY II|ENG

POWER/PROTECT (Also located on the supplied Bass Level Controller)

If the POWER LED lights up, the amplifier is ready for operation.

If the PROTECT LED lights up, a malfunction is indicated. Observe in this case the chapter TROUBLE SHOOTING.

FUNCTIONS AND OPERATIONAL CONTROLS

The LINE IN RCA jacks must be connected with the RCA output jacks of the headunit.

The LPF controller (LOW PASS) adjusts the cut-off point of the frequency range to above. The cut-off frequency is

continuously adjustable from 30 Hz to 150 Hz.

The LEVEL controller adjusts the input sensitivity of the amplifier to align the audio signal from the head unit.

The input sensitivity is adjustable from 6 Volts (MIN) to 0.2 Volts (MAX).

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The X-OVER MODE switch selects the required operation mode of the amplifier.

Position LPF/BPF: Lowpass mode (the higher frequencies will be eliminated. Adjustable by the LPF controller.)

The HPF controller works in this operation mode as subsonicfilter and eliminates the lower frequencies (Bandpass-Mode).

NOTE: If this controller is turned to a higher value than the LPF controller, no sound is hearable.

Position HPF: Highpass mode (the higher frequencies will be eliminate. Adjustable by the HPF controller.)

Position FULL: Fullrange mode (the whole frequencies will be amplified).

The BASS LEVEL CONTROLLER port is for the cable of the enclosed bass remote controller and only to use in the MASTER

mode. With this bass remote controller, you are able to adjust the bass level e.g. out of the driver’s seat. Please use only the

enclosed bass remote controller and cable. The controller works only in LPF/BPF mode.

The Remote operates strictly as a level attenuator. At full clockwise rotation at maximum position the level will be the same as if

the Remote was not connected at all. Find at first the desired bass level without the Remote and use the Remote then as level

attenuator for the bass level.

You find also two LEDs (POWER/PROTECT) on the Remote Controller. Check #9 for more information.

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Hifonics MERCURY IV Owner's Manual Page 21