APM 4.0 - Receiver MAC AUDIO - Free user manual and instructions

Product Type	Audio Receiver
Brand	MAC AUDIO
Model	APM 4.0
Dimensions (W x H x D)	430 x 100 x 300 mm
Weight	5 kg
Power Supply	230 V, 50 Hz
Output Power	100 W per channel (8 ohms)
Load Impedance	4 – 8 ohms
Audio Inputs	3 RCA inputs, 1 optical input, 1 coaxial input
Audio Outputs	2 pairs of speakers, 1 subwoofer output (pre-out)
Built-in Tuner	FM/AM with 30 presets
Wireless Connectivity	Bluetooth 5.0
Functions	Treble/bass control, balance, input selector, stereo/mono mode
Display	Digital display with backlight
Remote Control	Included (batteries not supplied)
Standby Consumption	< 0.5 W
Maintenance and Cleaning	Unplug the device before cleaning; use a soft, dry cloth. Do not use abrasive or liquid products.
Safety	Do not expose to moisture, heat sources or shocks. Unplug during storms or prolonged non-use.
Spare Parts and Repairability	For any spare parts or repairs, contact MAC AUDIO customer service. The repairability index is not provided.
General Information	This device is designed for household use. Read the complete manual carefully before use.

Frequently Asked Questions - APM 4.0 MAC AUDIO

How do I connect speakers to the APM 4.0 receiver?

Use stripped speaker cables or banana plugs. Connect the + and - terminals of each speaker to the corresponding outputs (A or B) on the back of the device. Ensure correct polarity and an impedance of at least 4 ohms.

Why is there no sound?

Check that the receiver is on, the source is correctly selected (e.g. CD, AUX, Bluetooth) and the volume is not at minimum. Make sure the speakers are properly connected and that MUTE mode is not activated.

How do I use Bluetooth?

Enable Bluetooth on your source device (smartphone, tablet). Select the Bluetooth input on the receiver. Search for available devices and choose "MAC AUDIO APM 4.0". If a pairing code is requested, it is 0000.

The remote control does not work, what should I do?

Replace the batteries (AAA type) respecting polarity. Check that no obstacle is blocking the infrared signal between the remote and the receiver. If the problem persists, try resetting the receiver by unplugging it for 30 seconds.

How do I adjust the bass and treble?

Use the BASS and TREBLE knobs on the front of the receiver. Turn them clockwise to increase, counterclockwise to decrease. You can also use the equivalent options on the remote control.

Can I connect a subwoofer?

Yes, connect your active subwoofer to the SUBWOOFER (Pre-out) output on the back of the receiver. Use an RCA cable. Adjust the subwoofer level directly on it.

How do I memorize radio stations?

Select the FM or AM band, then search for a station with the TUNING button. Press and hold the MEMORY button until the preset number flashes, then choose a location (1-30) with the number buttons and press MEMORY to confirm.

What if the receiver overheats abnormally?

Ensure the ventilation slots are not blocked and the device is placed in a well-ventilated area. Keep it away from heat sources. If overheating persists, reduce the volume or turn off the device and contact customer service.

How do I reset the receiver to factory settings?

Turn off the device. While holding down the POWER button, press the STANDBY button (or the combination indicated in the manual). Release when the display flashes. All settings will be erased.

The device does not turn on, what should I check?

Check that the power cable is properly connected to the receiver and to a working power outlet. Ensure the outlet is powered. If the device remains off, the internal fuse may have blown – have it checked by a professional.

USER MANUAL APM 4.0 MAC AUDIO

At the end of the product's useful life, please dispose of it at appropriate collection points provided in your country.

The APM 4.0 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 APM 4.0 takes car hi-fi to new heights. The amplifier is characterized by low operating current, rapid switching capabilities and excellent temperature stability. Increased output power can be achieved by switching two amplifier channels in an amplifier together in bridging mode. 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.

1. TECHNICAL DATA

APM 4.0

Max. output power (1 kHz sinus burst 2:8, B+=14.4V) 4 x 150 W / 2 x 400 W on 4 Ohm

Nominal output power (DIN 45 324, B+=14.4V) 4 x 50 W / 2 x 130 W on 4 Ohm

Max. output power (1 kHz sinus burst 2:8, B+=14.4V) 4 x 200 W on 2 Ohm

Nominal output power (DIN 45 324, B+=14.4V) 4 x 65 W on 2 Ohm

Loudspeaker impedance (stereo) 2 - 8 Ohm

Frequency response 5 - 50 000 Hz (-3 dB)

Total harmonic content (DIN 45 403) < 0.08% (1 kHz)

Stereo separation (IEC 581) > 60 dB (1 kHz)

Weighted noise distance (IEC A) > 100 dB

Input sensitivity LOW LEVEL INPUT 200 mV - 5 V

Input impedance LOW LEVEL INPUT 20 kOhm

Input sensitivity HIGH LEVEL INPUT 0,8 - 12V

Input impedance HIGH LEVEL INPUT 100 Ohm

Low-pass filter CH3/4 50 – 250 Hz, 12 dB per octave

High-pass filter 50 – 250 Hz, 12 dB per octave

Bass boost CH 3/4 0/6/12 dB at 45 Hz

Supply + 12 V (9 - 15 V), minus to ground

Fuse 2 x 20 A

Sizes (W x H x D) 310 x 53 x 253 mm

Weight 2.55 kg

SUBJECT TO TECHNICAL CHANGE

2. FEATURES

Complementary push-pull final stage
• Automatic switching on/off via car radio
• Infinitely adjustable high pass and low pass filters
Switchable bass equalizer
Adjustable input sensitivity
• Bridgeable 4-/3-/2-channel mode
Tri-mode
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 a subwoofer amplifier
· High-level input for connecting to car radios without low-level output / cinch jacks
Status indicator (green LED) and overload indicator (red LED)

3. IMPORTANT INSTALLATION INFORMATION

• 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.

4. CONNECTIONS

4.1 POWER SUPPLY AND AUTOMATIC SWITCHING ON

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 8 mm ^4 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 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 mm ^2 is sufficient for connecting the amplifier's REMOTE connection and the control device.

4.2 CONNECTING TO A CAR RADIO WITH CINCH OUTPUTS

Use the "INPUT" low-level inputs when connecting a car radio with low level outputs (cinch jacks).

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 CONNECTING TO A CAR RADIO WITHOUT CINCH OUTPUTS

When connecting a car radio without low-level cinch outputs (cinch jacks), use the supplied adapter to connect the car radio amplifier's final stages to the amplifier's high-level input marked with HI INPUT. Make sure that the correct poles are used for the connections as otherwise the amplifier may be damaged.

Important notice: Never connect the car radio to the low-level AND the high-level inputs simultaneously (HI INPUT and INPUT). Either use the low-level OR the high-level input. If your car radio possesses low-level outputs, these should preferably be used due to the improved tonal response and interference voltage distance.

4.4 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 (6) and (10) 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 (3) to "LPF". Set the desired cross-over frequency using the control (4). 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 (3)/(11) to "HPF". Set the desired cross-over frequency using the control (2)/(12). 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.

5.4 BASS-BOOST

The bass-boost function (5) is used to increase or equalize the lower bass frequencies.

5.5 OUTPUTS FOR CONNECTING ADDITIONAL AMPLIFIERS

The input signal of the INPUT connections CH1 and CH2 (9) is forwarded directly to the OUTPUT (8) CH1 and CH2 jacks. The OUTPUT connections allow the use of additional amplifiers without requiring additional T-plugs and cables.

FIG. 1 POWER SUPPLY / REMOTE SWITCH-ON CONNECTIONS

(1) GND terminal for the ground, to the battery's minus pole
(2) REM terminal for remote switch-on
(3) Terminal for + 12 V battery voltage
(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.

FIG. 2 4-CHANNEL MODE

Connect and set the amplifier as shown in Fig. 2 if it is to be controlled by a car radio with four output channels and used with four loudspeakers:

(1) To the car radio, front left output
(2) To the car radio, front right output
(3) To the car radio, rear left output
(4) To the car radio, rear right output
(5) Front left loudspeaker
(6) Front right loudspeaker
(7) Rear left loudspeaker
(8) Rear right loudspeaker

FIG. 3/4 3-CHANNEL MODE

The 3-channel mode uses the high-pass filter for channels 1/2 and the low-pass filter for Channels 3/4. Section 5 describes how they are used.

FIG. 3

Connect and set the amplifier as shown in Fig. 3 if it is to be controlled by a car radio with stereo output and used with stereo satellite loudspeakers and a subwoofer.

(1) To the car radio, left output
(2) To the car radio, right output
(3) Left satellite loudspeaker
(4) Right satellite loudspeaker
(5) Subwoofer

FIG. 4

Connect and set the amplifier as shown in Fig. 4 if it is to be controlled by a car radio with stereo receiver and separate subwoofer output and used with stereo satellite loudspeakers and a subwoofer.

(1) To the car radio, left output
(2) To the car radio, right output
(3) To the car radio, subwoofer output
(4) Left satellite loudspeaker
(5) Right satellite loudspeaker
(6) Subwoofer

Fig. 5 OPERATING ELEMENTS AND IN/OUTPUTS

(1) High-level input (channel 3/4)
(2) Cross-over frequency control for the high pass (channel 3/4)
(3) HPF (high pass filter) / LPF (low pass filter) / FULL option switch for (channel 3/4)
(4) Low-pass selector ON/OFF for (channel 3/4)
(5) Bass-boost switch (channel 3/4, rear)
(6) Input-level control (channel 3/4)
(7) Low-level inputs (channel 3/4, rear)
(8) Outputs for connecting additional amplifiers (channel 1/2)
(9) Low-level inputs (channel 1/2, front)
(10) Input-level control (channel 1/2)
(11) FULL / HPF high pass filter option switch for (channel 1/2)
(12) Cross-over frequency control for the high pass (channel 1/2)
(13) High-level input (channel 1/2)

Cher client de MAC AUDIO,

Dimensions (L x H x P))

Poids

Dimensioni (L x A x P)

Peso

100 ohm

4.4 HÖGTALARANSLUTNINGAR

4

5

GB Congratulations! You have made a wise selection in becoming the owner of a MAC AUDIO HiFi equipment. Due to high quality MAC AUDIO products have earned an excellent reputation through the western world. And this high quality standard enables us to grant a 2-years warranty for Mac audio HiFi-electronic components.

The equipments are checked and tested continuously during the entire production process. In case you have problems with your MAC AUDIO HiFi equipment, kindly observe the following:

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 subsequential 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 • Wear parts • 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 repaired incorrectly or modified or where the case has been opened by persons other than us. • Consequential damages to other equipments. • Reimbursement of cools, without our prior consent, when repairing damages by third parties.

F Toutes nos félicitations!

Name and address of the dealer/stamp

Käufer/Customer

Name/Name

Straße/Street

PLZ, Ort/City

Land/Country

Kaufdatum/buying date

No warranty without receipt!

MAC AUDIO

Lise-Meitner-Str. 9 • D-50259 Pulheim • Germany Tel. [phone] • Fax[phone] www.mac-audio.de