ZX 2000 - Receiver MAC AUDIO - Free user manual and instructions

USER MANUAL ZX 2000 MAC AUDIO

Dear MAC AUDIO Customer, The ZX 2000 BLACK EDITION car hi-fi power amplifier will enable you to satisfy your high demands on sound reproduction in your car. With its impressive deep-bass power reserves, low harmonic content and neutral reproduction, the ZX 2000 BLACK EDITION takes car hi-fi to new heights. The amplifier is characterized by low operating current, rapid switching capabilities and excellent temperature stability. Experience and enjoy how this high-tech machine perfectly reproduces magnificent sound. Please read all of the owner’s manual before installing and using the amplifier.

• Complementary push-pull final stage

• Automatic switching on/off via car radio

• Infinitely adjustable high-pass filter 40 – 400 Hz

• Infinitely adjustable low-pass filter 50 – 300 Hz

• Infinitely variable bass equalisation

• Electronic protective circuit against short circuiting, DC offset and excess temperature

• Mute switch for suppressing switch-on crackle interference

• Low-level outputs (cinch jacks) for connecting additional amplifiers

• Status indicator (green LED) and overload indicator (red LED)9

• This appliance may only be connected to a 12 volt system with negative ground.

• The heat radiated when the amplifier is used means that sufficient air circulation is required at the place of installation. It is very important that the cooler’s cooler ribs do not contact any metal plating or any surfaces which could impair air circulation. The amplifier may not be installed in small confined spaces or spaces without air circulation (e.g. spare wheel recess or under the vehicle carpeting). Installation in the boot is recommended.

• Install the amplifier in such a way that it is protected as far as possible against vibrations and dust and dirt.

• Make sure that the input/output cables are sufficiently distant from the power supply cables as otherwise interference may occur.

• Make sure that the fuse and operating elements are accessible after installation.

• The appliance’s reliability and performance depend on the quality of installation. Preferably get an expert to install the system, particularly if you want to install several loudspeakers or a complex multi-way system.

Important notice: Before commencing the installation, disconnect the plus terminals from the car battery in order to prevent short circuits. The power cabling usually installed in on-board car networks is not sufficient for a power amplifier’s demands. Make sure that the power lines to GND and to the +12 V terminal have been sufficiently specified. A cable cross-section of at least 10 mm² must be used to connect the battery to the amplifier’s terminals. 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 must be located close to the battery, the length of cable from the battery’s positive pole to the fuse must be less than 60 centimetres for safety reasons. 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. Acable with a cross-section of 0.75 mm² is sufficient for connecting the amplifier’s REMOTE connection and the control device.

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.

• 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.

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 control (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 LOW-PASS FILTER WITH ADJUSTABLE CROSS-OVER FREQUENCY

If the amplifier is used as a subwoofer amplifier, set the switch (1) to “LPF”. Set the desired cross-over frequency with the control (3). 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.

5.3 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 (1) to “HPF”. Set the desired cross-over frequency with the control (2). 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.

The bass-boost function (4) is used to increase or equalize the lower bass frequencies.

5.5 OUTPUTS FOR CONNECTING ADDITIONAL AMPLIFIERS

The input signal of the LINE INPUT connections L and R (7) is forwarded directly to the LINE OUT (8) L and R jacks. The LINE OUT connections allow the use of additional amplifiers without requiring additional T-plugs and cables.

FIG. 1 POWER SUPPLY / REMOTE SWITCH-ON CONNECTION

(1) Terminal for +12 V battery voltage (2) REM terminal for remote switch-on (3) GND terminal for the ground, to the battery’s minus pole (4) Battery (5) Cable fuse (6) To your car radio’s automatic aerial connection If your car is not equipped with an automatic aerial connection, connect this cable’s plus pole (+) to the ignition lock. An on/off switch should be inserted in this case. Make sure that this switch is switched off if the amplifier is not used.11

Connect and set the amplifier as shown in Fig. 2 if it is to be controlled with two output channels and to use two loudspeakers. The high-pass filter must also be activated if the amplifier is also used for satellite loudspeakers. See Chapter 5.3. (1) To the car radio, left output (2) To the car radio, right output (3) Loudspeaker left (4) Loudspeaker right FIG. 3 BRIDGE MODE WITH STEREO CAR RADIO If the amplifier has to generate more power to operate a subwoofer, connect and set it as shown in Fig.

3. The use of the low-pass filter is described in Chapter 5.2.

(1) HPF (high-pass filter) / LPF (low-pass filter) / FULL option switch (2) Cross-over frequency control for the high pass (3) Cross-over frequency control for the low pass (4) Bass-boost control (5) Input level control (6) Mono-stereo switch (7) Low-level input (8) Outputs for connecting additional amplifiers12

4.3 HÖGTALARANSLUTNINGAR

1. The guarantee period commences with the purchase of the component and is applicable only to the original owner.

2. During the guarantee period we will rectify any defects due to faulty material or workmanship by replacing or repairing the defective part at our discretion. Further claims, and in particular those for price reduction, cancellation of sale, compensation for damages or subsequen- tial damages, are excluded. The guarantee period is not altered by the fact that we have carried out guarantee work.

3. Unauthorized tampering with the equipment will invalidate this guarantee.

4. Consult your authorized dealer first, if guarantee service is needed. Should it prove necessary to return the component to the factory, please insure that • the component is packed in original factory packing in good condition • the quality control card has been filled out and enclosed with the component • your enclose your receipt as proof of purchase. 5. Excluded from the guarantee are: • Illuminates • Shipping damages, either readily apparent or concealed (claims for such damages must be lodged immediately with forwarding agent, the railway express office or post office). • Scratches in cases, metal components, front panels, etc. (You must notify your dealer directly of such defects within three days of purchase.) • Defects caused by incorrect installation or connection, by operation errors (see operating instructions), by overloading or by external force. • Equipments which have been repai- red incorrectly or modified or where the case has been opened by persons other than us. • Consoquential damages to other equipments.