AMPCH04 - Car stereo Auna - Free user manual and instructions

Product type	Car audio amplifier
Brand	Auna
Model	AMPCH04
Output power	95 W x 2 channels, 95 W x 4 channels, 95 W x 6 channels
Frequency range	20 Hz - 20 kHz (±1 dB)
Input sensitivity (high)	1.0 - 2.0 V, impedance 100 ohms
Input sensitivity (low)	0.1 - 1.0 V, impedance 10 kohms
Signal-to-noise ratio	> 95 dB
Speaker impedance	4 - 16 ohms
Adjustable subwoofer frequency	30 Hz - 250 Hz
Power supply	DC 14.4 V (11-16 V)
Maximum current	15 A
Main functions	Multi-mode power supply, adjustable RCA input, short-circuit protection, delayed turn-on, noise reduction
Inputs	High power (speakers) and RCA (preamp)
Connectors	Gold-plated RCA inputs
Protection	ATC fuse, thermal, speaker short-circuit
Chassis material	Robust metal
Cleaning	Dry microfiber cloth, no chemicals
Safety	Do not open, have repaired by a professional, use away from moisture and heat
Repairability	Repair only by an approved specialist
Included accessories	Mounting screws, spare fuse

Frequently Asked Questions - AMPCH04 Auna

How to install the Auna AMPCH04 amplifier?

Mount the amplifier in a dry and ventilated place using the supplied screws. Connect the red power cable to the positive terminal of the battery with the fuse holder, and the black cable to ground (chassis). Connect the orange cable to a switched ignition wire of the car stereo for automatic turn-on.

What is the power of the AMPCH04?

It delivers 95 watts per channel in 2, 4 or 6 channel configuration, depending on wiring. The total power depends on the number of channels used and the speaker impedance.

How to connect speakers to the amplifier?

Use the screw terminals: connect the positive speaker wire to the corresponding positive terminal (e.g., FL+ for front left) and the negative wire to the negative terminal (FL-). Respect the minimum impedance of 4 ohms per channel.

Can I use the AMPCH04 with a subwoofer?

Yes, the amplifier has an adjustable low-pass filter from 30 to 250 Hz for the subwoofer. Use the subwoofer output of the car stereo or a dedicated RCA input.

What is the recommended input sensitivity?

Sensitivity can be adjusted between 0.1 V and 2 V depending on the input. For high level input (speakers), adjust between 1 and 2 V. For low level input (RCA), adjust between 0.1 and 1 V.

What to do if the amplifier does not turn on?

First check the fuse of the power cable. Make sure the orange cable (remote) is connected to a switched 12 V ignition wire. Check the ground (black cable): it must be firmly attached to a bare metal part of the chassis.

The amplifier gets very hot, is that normal?

Some heat is normal, especially at high volume. Make sure the device is mounted in a well-ventilated place and that no objects obstruct the cooling fins. If thermal protection activates, reduce the volume or let it cool down.

Can I connect the amplifier without a car stereo?

Yes, via the AUX input (RCA) by connecting an MP3 player or smartphone with a jack to RCA cable. The orange cable must always be connected to a switched 12 V source for turn-on.

What type of fuse to use?

Use a 15 A ATC fuse (supplied). Never replace with a higher value fuse, as this would damage the amplifier.

How to clean the amplifier?

Unplug the device, then wipe it with a soft dry cloth. Never use detergents or abrasive products.

USER MANUAL AMPCH04 Auna

Unit 6 Riverside Business Centre

Brighton Road

Shoreham-by-Sea

BN43 6RE

United Kingdom

Dear customer,

Congratulations on the purchase of your appliance. Please read the following instructions carefully and follow them to prevent potential damage. We accept no liability for damage caused by disregarding the instructions or improper use. Please scan the QR code to access the latest operating instructions and for further information about the product.

CONTENTS

Technical Data 14

Safety Instructions 14

Device properties 15

Connecting the power cable 15

Connection of the remote switch cable 16

Amplifier input connection 16

AUX connection 16

Input sensitivity control 16

Device Overview 17

Connection to the car radio 19

Connection to the speakers 20

Disposal Considerations 22

Manufacturer & Importer (UK) 22

TECHNICAL DATA

Output power	95 W x 2-channel amplifier 95 W x 4-channel amplifier 95 W x 6-channel amplifier
Frequency response 20 Hz-20 kHz at	1 dB
Input sensitivity	High: 1.0-2.0 V Impedance: 100 Ohm
	Low: 0.1-1.0 V Impedance: 10 K Ohm
SR > 95 dB
Speaker impedance 4-16 Ohm
Subwoofer frequency Adjustable 30 Hz - 250 Hz
Power supply DC 14.4 V
Accessories Screws and spare fuse

SAFETY INSTRUCTIONS

• Always keep these instructions in a safe place so that you can access them at any time.
• Use the product only as described in the instructions. Any other use may lead to damage to the product or in the vicinity of the product.
• Modifying or changing the product will compromise product safety.
• Handle the product carefully. It can be damaged by bumps, blows or falls from a small height.
• Keep the product away from moisture and extreme heat.
• Do not open the device under any circumstances. The warranty is void if the unit is tampered with by third parties.
• Incorrect assembly may lead to malfunctions or total failure.
• The device should be protected from any moisture and direct sunlight.
• Never use cleaning agents for cleaning, only a dry microfibre cloth.
• Never open the product without authorisation and never carry out repairs yourself! Repairs to the device may only be carried out by a specialist workshop.

DEVICE PROPERTIES

General

• Multi-mode power capability for simultaneous connection of subwoofer and satellite speakers
• Adjustable subwoofer crossover frequency (30-250 Hz)
  High-current output device
  Adjustable RCA input level
• Basic input insulation
• Line noise suppression
• Noise reduction
• Switch-on delay
• Speaker short-circuit protection
  Gold RCA connectors and inputs
  ATC unit fuse protection

Energy supply

• Ultra-stable PWM (pulse width modulated signal)
  Energy supply (11-16 V)
  Thermal overheating protection
• Remote activation

• As this is a high-current unit, the connection of the power cable is very important.
• Connect the red cable to the (+) terminal of your battery using the cable with the fuse holder.
• Connect the black cable firmly to a screw or another part of the bodywork of your car after you have removed the paint. This is necessary for proper earthing.
• Proper wiring leads to clear sound.

CONNECTION OF THE REMOTE SWITCH CABLE

Connect the orange cable to a switched power cable of the rat radio. This controls the switching on and off of the amplifier. The switched power cable can serve as the radio's antenna.

AMPLIFIER INPUT CONNECTION

• This unit can be used with all car radios that have high power outputs.
• Separate basic car radio connection: Connect the car radio speaker output cables to the high-power inputs +/- right and left.
• General car radio connection: Connect the negative car radio speaker output cable to the two remaining cables +/- right and left.

AUX CONNECTION

• Connect the AUX input cable to the RCA connector as described: WHITE to the left preampifier output of the car radio. RED to the right preampier output of the car radio.
• Before connecting the preampifier output of the car radio or other equipment, make sure that the impedance and sensitivity match this AUX connection.

INPUT SENSITIVITY CONTROL

Control the input sensitivity to the car radio.

2-channel amplifier

4-channel amplifier

Important instructions

• The amplifier requires 15 A at maximum power. If the amplifier is being used while the engine is switched off, the battery may be discharged. Please always switch on the motor before using the amplifier.
• Only use power cables with a suitable cross-section.
• This unit is suitable for speakers with an impedance of 2-16 ohms. The speakers must have enough capacity to absorb more of the unit's power.

2-channel amplifier

4-channel amplifier

6-channel amplifier
CONNECTION TO THE SPEAKERS

2-channel amplifier

4-channel amplifier

6-channel amplifier

Important instructions

• Mount the amplifier in an appropriate place using the enclosed screws.
• The unit heats up strongly. Therefore, leave space around the amplifier when mounting it.

DISPOSAL CONSIDERATIONS

If there is a legal regulation in your country regarding the disposal of electrical and electronic equipment, this symbol on the product or on the packaging indicates that this product must not be disposed of with household waste. Instead, it must be taken to a collection point for the recycling of electrical and electronic equipment. By disposing of this product in accordance with the regulations, you protect the environment and the health of those around you from negative consequences. For information on recycling and disposal of this product, contact your local government or household waste disposal service.

MANUFACTURER & IMPORTER (UK)

Manufacturer:

Chal-Tec GmbH, Wallstraße 16, 10179 Berlin, Germany.

Importer for Great Britain:

Chal-Tec UK limited

Unit 6 Riverside Business Centre

Brighton Road

Shoreham-by-Sea

BN43 6RE

United Kingdom

Estimado cliente:

CONEXION A LOS ALTAVOCES

Chal-Tec UK limited.

Unit 6 Riverside Business Centre

Brighton Road

Shoreham-by-Sea

BN436RE

Reino Unido

Cher client, chere clientele,

Unit 6 Riverside Business Centre

Brighton Road

Shoreham-by-Sea

BN43 6RE

Royaume Uni

Gentile clientele,

PRODUTTORE E IMPORTATORE (UK)

Produtlore:

Chal-Tec GmbH, Wallstraße 16, 10179 Berlin, Germania.

Unit 6 Riverside Business Centre

Brighton Road

Shoreham-by-Sea

BN43 6RE

Regno Unito