AMPCH02 - Car radio Auna - Free user manual and instructions

Product type	Car audio amplifier
Brand	Auna
Model	AMPCH02
Power output	95 W x 2 channels (RMS)
Frequency response	20 Hz – 20 kHz (at 1 dB)
Signal-to-noise ratio	> 95 dB
Input sensitivity	High: 1.0-2.0 V (100 Ω) / Low: 0.1-1.0 V (10 kΩ)
Speaker impedance	4-16 Ω
Subwoofer cutoff frequency	30-250 Hz (adjustable)
Power supply	DC 14.4 V (11-16 V)
Protection	Short circuit, thermal, ATC fuse
Inputs	RCA (gold) and high-level (speaker wires)
Remote turn-on	Yes (orange wire)
Gain adjustment	Yes (potentiometer)
Low-pass filter	Yes (LPF, adjustable)
Operating mode	Multi-mode (subwoofer + satellites)
Cooling	Convection (passive)
Dimensions (approx.)	200 x 150 x 50 mm
Weight (approx.)	1 kg
Included accessories	Mounting screws, spare fuse

Frequently Asked Questions - AMPCH02 Auna

How to connect the power supply of the Auna AMPCH02 amplifier?

Connect the red cable to the positive (+) terminal of the battery via the fuse holder, and the black cable to a clean chassis ground (after removing paint). Use cables of appropriate gauge.

How to wire the remote turn-on cable?

Connect the orange wire to a switched power cable from the car stereo (often the antenna wire). This allows turning the amplifier on and off with the car stereo.

What types of inputs can I use on the amplifier?

The amplifier has RCA (gold) inputs for preamp signals and high-level inputs (speaker wires) for car stereos without RCA outputs. Both are compatible.

How to adjust the amplifier gain?

Use the GAIN potentiometer on the amplifier. Start at minimum and increase gradually until you get clear sound without distortion. First set the car stereo volume to 75%.

What speaker impedance is recommended?

The amplifier works with speakers of 4 to 16 ohms. Make sure the total impedance does not drop below 2 ohms per channel to avoid overload.

How to adjust the subwoofer cutoff frequency?

Use the LPF (Low Pass Filter) control on the amplifier. Turn the potentiometer between 30 and 250 Hz to set the subwoofer cutoff frequency. Adjust according to satellite speakers.

What to do if the amplifier does not turn on?

Check the power connections (B+ and GND), the fuse, and the remote turn-on wire. Make sure the car stereo is on. If the problem persists, check the ground and fuses.

How to protect the amplifier from overheating?

Mount the amplifier in a well-ventilated area. The device heats up significantly; leave at least 5 cm of space around it. Thermal protection automatically shuts off in case of overheating.

Can I use the amplifier with 2 ohm speakers?

No, the minimum impedance is 4 ohms per channel. Lower impedance may damage the amplifier.

How to clean the Auna AMPCH02 amplifier?

Use a dry microfiber cloth. Never use cleaning products or solvents. Disconnect the device before cleaning.

USER MANUAL AMPCH02 Auna

INHALTSVERZEICHNIS

Technische Daten 4

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 amplifier95 W x 4-channel amplifier95 W x 6-channel amplifier
Frequency response 20 Hz-20 kHz at	1 dB
Input sensitivity	High: 1.0-2.0 VImpedance: 100 Ohm
	Low: 0.1-1.0 VImpedance: 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 car 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 preamplifier output of the car radio. RED to the right preamplifier output of the car radio.
• Before connecting the preamplifier 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

6-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.

CONNECTION TO THE CAR RADIO

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:

ÍNDICE

Datos técnicos 24

Notas importantes

Chal-Tec UK limited.

Unit 6 Riverside Business Centre

Brighton Road

Shoreham-by-Sea

BN43 6RE

Reino Unido

Cher client, chère cliente,

SOMMAIRE

Fiche technique 34

Unit 6 Riverside Business Centre

Brighton Road

Shoreham-by-Sea

BN43 6RE

Royaume Uni

Gentile cliente,

INDICE

Dati tecnici 44

Note importanti

PRODUTTORE E IMPORTATORE (UK)

Produttore:

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

Unit 6 Riverside Business Centre

Brighton Road

Shoreham-by-Sea

BN43 6RE

Regno Unito