Manual Magnat Power Core Four (page 9 of 56) (English, German, Dutch, French, Italian, Portuguese, Swedish, Spanish)

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First connect the amplifier’s GND terminal to the battery’s minus pole. It is very important that the connection is good. Dirt residues must

be carefully removed from the battery’s connection point. A loose connection may cause malfunctions or interference noise or distortion.

The +12 V amplifier connection must then be connected with a power cable possessing an integrated fuse to the battery’s plus pole. The

fuse should be located close to the battery; for safety reasons, the cable from the positive terminal of the battery to the fuse must not

exceed 60 cm in length. Only insert the fuse when all installation work, including the connection of the loudspeakers, has been completed.

Now connect the car hi-fi receiver’s remote control connection to the amplifier’s REM control jack. A cable with a cross-section of 0.75 mm²

is sufficient for connecting the amplifier’s REMOTE connection and the control device.

4.2 AUDIO CABLES

When installing the audio cable between the cinch output of your car receiver and the cinch input of the amplifier inside your car, the

audio and power supply cables should, wherever possible, not be routed along the same side of the vehicle. We recommend an isolated

installation, e.g. routing the power cable through the cable duct on the left-hand side and the audio cable through the cable duct on the

right-hand side or vice versa. This reduces interference due to crosstalk into the audio cables.

4.3 LOUDSPEAKER CONNECTIONS

· In normal operating mode (i.e. one loudspeaker on each individual amplifier channel), the lowest terminal resistance is 2 ohm per

channel.

· In bridging mode (two amplifier outputs combined) the lowest terminal resistance doubles to 4 ohm.

· The impedance in tri-mode may not fall below 2 ohm per channel.

· Never connect the loudspeakers’ minus terminals to the vehicle chassis.

· Never connect the +12 V supply voltage to a loudspeaker output as this would destroy the amplifier final stage.

If the amplifier is operated with lower terminal resistances or incorrectly used as described above, both the amplifier and the

loudspeakers may be damaged. The warranty becomes void in such cases.

5. OPERATING ELEMENTS AND IN/OUTPUTS

5.1 SETTING THE INPUT SENSITIVITY

The input sensitivity may be adapted to any car radio or tape deck. Turn the volume control of your radio to its central position and then

adjust the input-level controls (4) and (5) to produce an average medium volume. This setting usually provides sufficient power reserves

at optimum weighted noise voltage.

ATTENTION: only reproduce loud test noises briefly to prevent damaging the loudspeakers.

5.2 HIGH-PASS FILTER WITH ADJUSTABLE CROSS-OVER FREQUENCY

If the amplifier is to be used as an amplifier for satellite loudspeakers (mid-range/tweeter loudspeakers), set switch (8)/(9) to “HP”. Set the

desired cross-over frequency using the control (6)/(7). Only the frequencies above the set cross-over frequency will then be amplified. This

effectively minimizes distortions caused by excessive membrane movement at low frequencies and small satellite loudspeakers without

reducing the bass level.

5.3 BAND-PASS FUNCTION FOR CHANNELS 1 AND 2

The filters integrated in channels 1 and 2 may be used as a band-pass by activating the high-pass and low-pass filters simultaneously.

The selector (8) must be in its position “LP/BP“. Controls (6) and (10) may now be used to set the lower and upper limit frequencies of the

resulting band-pass. This function can be used to drive a subwoofer (high-pass regulator (6) at 10 Hz) or to realise a bass kick response

(high-pass regulator (6) at approx. 80 to 100 Hz). Adjust the low-pass regulator to the desired crossover frequency.

This makes the filter adaptable to the installed woofer’s sound requirements. The filter’s high edge steepness is responsible for the precision

reduction of medium and high frequency ranges.

5.4 BASS-BOOST

The bass-boost function (12) is used to increase or equalize the lower bass frequencies.

5.5 FILTER SELECTOR CHANNEL 3 AND 4 (9), FILTER POSITION DUPE

When set to the DUPE setting, channel 3/4 receives the input signal from the preamplifier of channels 1/2 and transfers the filter settings

from channel 1/2 (bandpass, bass boost). The volume of channel 3/4 can be set independent of channel pair 1/2.

5.6 SELECTOR SWITCH FOR CHANNEL MODE 2CH/4CH (11)

When set to the 2 channel mode (switch position „CH 2“), channel 3/4 of the amplifier receives the input signal from the RCA jacks of

channels 1/2. The selector switch means the use of additional T-plugs is unnecessary.

5.7 OUTPUTS FOR CONNECTING ADDITIONAL AMPLIFIERS

The input signal of the LINE INPUT connections CH1, CH2, CH3, CH4 (1 and 2, Fig. 7) is accumulated and forwarded directly to the

OUTPUT (3) jacks. The OUTPUT connections allow the use of a subwoofer amplifier without requiring additional T-plugs and cables.

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Magnat Power Core Four Manual

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