Renkforce Stereo Amplifier 2 x 100 W

1. Introduction

Dear customer, Thank you for purchasing this product. This product complies with statutory, national and European regulations. To ensure that the product remains in this state and to guarantee safe operation, always follow the instructions in this manual.

These operating instructions are part of this product. They contain important information on setting up and using the product. Do not give this product to a third party without the operating instructions. Therefore, retain these operating instructions for reference!

If there are any technical questions, please contact: www.conrad.com/contact

2. Description of Symbols

⚡ The symbol with the lightning in a triangle indicates that there is a risk to your health, e.g. due to an electric shock.

⚠️ The symbol with an exclamation mark in a triangle is used to highlight important information in these operating instructions. Always read this information carefully.

➡️ The arrow symbol indicates special information and tips on how to use the product.

? This symbol indicates that the product may only be used in enclosed rooms.

3. Intended Use

The device is used to amplify audio signals in home audio systems and is connected between the signal source to be amplified and the speakers. In addition, signals sent via Bluetooth® and audio files from USB storage media or SD memory cards can be played back.

The product must only be connected to an earthed mains socket with a 200-240 V/AC, 50 Hz alternating current.

This product is intended for indoor use only. Do not use it outdoors. Contact with moisture (e.g. in a bathroom) must be avoided under all circumstances.

For safety and approval purposes, do not rebuild and/or modify this product. Using the product for purposes other than those described above may damage the product. In addition, improper use can cause hazards such as short circuit, fire or electric shock. Read the operating instructions carefully and store them in a safe place. Only make this product available to third parties together with its operating instructions.

All company and product names contained herein are trademarks of their respective owners. All rights reserved.

Bluetooth® is a registered trademark of Bluetooth SIG, Inc. The use of this word mark has been licensed. Other brand names and trade names are trademarks of the respective owners.

HDMI is a registered trademark of HDMI Licensing L.L.C.

4. Delivery Content

• Stereo amplifier
• Power cord
• Remote control
• Operating instructions

For up-to-date operating instructions, visit www.conrad.com/downloads.

5. Features and Functions

• IR remote control for convenient operation
• Bluetooth® interface for wireless music playback from your phone, tablet or computer
• USB interface and SD card reader for playback from storage media
• 6.3 mm headphone jack
• High-quality housing with aluminium front panel

6. Safety Information

a) General Information

• This product is not a toy. Keep it out of the reach of children and pets.
• Do not leave packaging material lying around carelessly.
• Protect the product from extreme temperatures, direct sunlight, strong jolts, high humidity, moisture, flammable gases, vapours, and solvents.
• Do not expose the product to any mechanical stress.
• If safe operation is no longer possible, stop using the product and prevent unauthorized use.
• Handle the product carefully.
• Consult a technician for unsure operations or safety concerns.
• Maintenance, modifications, and repairs must be carried out by a technician or specialist repair center.
• Contact technical support for unanswered questions.
• Pay attention to additional safety information in individual sections.
• Do not operate the device unattended.
• Only use the product in temperate climates.

b) Connected Devices

Always observe the safety information and operating instructions of any other devices connected to the product.

c) Electrical Safety

• The mains socket must be close to the appliance and easily accessible.
• Never touch the mains plug with damp or wet hands.
• Ensure the power cord is not pinched, bent, damaged, or subjected to mechanical or thermal stress.
• Do not touch a damaged power cord. Switch off the mains socket and unplug the appliance.
• Never place objects containing liquid on or near the device.
• Ensure adequate ventilation. Do not cover ventilation holes.
• Do not place naked flames near the device.

d) Batteries

• Dispose of used batteries as described in the "Disposal" section.
• Never throw batteries into fire.
• Use protective gloves when handling leaking or damaged batteries.
• Liquids leaking from batteries are chemically aggressive.
• Do not dismantle, short-circuit, or throw batteries into fire. Never attempt to recharge non-rechargeable batteries.

7. Product Overview

Front Panel

• 1: Power button
• 2: SD card reader
• 3: Audio input indicator
• 4: Rotary knob
• 5: USB interface
• 6: IR receiver

Front Panel (Remote Control)

• 7: ◀◀ button
• 8: ▶▶II button
• 9: ▶▶ button
• 10: Headphone jack

Rear Panel

• 11: AUX INPUT connector
• 12: AUX OUTPUT connector
• 13: HDMI INPUT connector
• 14: OPTICAL INPUT connector
• 15: COAXIAL INPUT connector
• 16: SPEAKERS connectors
• 17: Mains connection
• 18: MODE button
• 19: - button
• 20: + button

8. Setting Up

When selecting the setup location, take the room layout into consideration (e.g. location of the nearest socket). Avoid proximity to direct sunlight, vibrations, dust, hot and cold temperatures and damp. The device must not be placed next to powerful transformers or motors.

The device must be operated on a stable, level surface. There must be enough space around the device for air to circulate, otherwise heat will not dissipate properly. Only place the device on smooth, level surfaces (not carpets or other uneven surfaces). Do not cover the ventilation slots. Failure to observe these instructions may damage the device.

Do not drill holes or screw extra screws into the device. This will damage the interior components and may cause a fatal electric shock.

Ensure that the device is placed on a stable surface to prevent it from falling off and causing injury.

Given the variety of paints and varnishes used to coat furniture, it cannot be ruled out that the device feet could leave visible traces on furniture due to a chemical reaction. Do not place the device on top of valuable furniture without appropriate protection.

9. Inserting Batteries into the Remote Control

You can control the amplifier functions conveniently from the distance using the included IR remote control.

Keep batteries out of the reach of children. Check that the batteries are inserted with the correct polarity. Remove the batteries when you do not plan to use the remote control for a prolonged period. Do not leave batteries lying around, as they constitute a choking hazard for children and pets. Seek immediate medical attention if a battery is swallowed.

1. Slide the battery compartment cover off the remote control.
2. Insert two new 1.5 V micro-batteries (AAA) into the battery compartment. Pay attention to the polarity markings on the bottom of the battery compartment.
3. Slide the cover back onto the remote control.
4. Replace the batteries when the range of the remote control deteriorates or the remote control ceases to function properly.
5. Use alkaline batteries to ensure a longer battery life.
6. Never mix old and new batteries or batteries from different manufacturers. Do not mix non-rechargeable batteries with rechargeable batteries.

10. How to Connect

a) Connecting the Source Devices

The amplifier features connectors for analogue and digital audio devices.

Only connect devices with the same sockets as those found on the amplifier.

Use suitable connecting cables. Unsuitable cables may cause interferences or malfunctions.

The OPTICAL INPUT (14) and COAXIAL INPUT (15) are different options for the same digital input; only one can be connected at a time.

For analogue connections AUX INPUT (11) and AUX OUTPUT (12): The "L" socket connects to the left RCA connector, and the "R" socket connects to the right RCA connector.

b) Connecting Speakers

Two cables are required per speaker. Insulate all terminals. Ensure no sharp edges can damage cables.

Ensure speakers have sufficient power rating (see "Technical data").

Connect speakers directly. Do not use headphone adapters or distribution boxes. Consult a specialist if unsure.

Check speaker polarity (observe plus and minus markings).

The amplifier is designed for speakers with 4-8 Ohms impedance. Connect only one speaker per output.

Banana plugs or stripped speaker wires (max. 2.5 mm diameter) can be used.

To attach speaker wires, unscrew clamps, insert stripped ends, and tighten clamps. Ensure strands are fully inserted to prevent short circuits.

c) Connecting Headphones

The device features a headphone jack (10) for connecting headphones.

1. Insert the headphone jack plug into the headphone jack (10).
2. If the plug does not fit, use an adapter.

When headphones are connected, the speakers are automatically disabled.

11. Mains Connection

The mains socket must be in close vicinity and easily accessible for quick disconnection in case of fault.

Ensure the voltage indicated on the amplifier matches your mains voltage.

Do not let the power cord contact other cables.

Exercise caution with power cords and mains connections; mains voltages can cause fatal electric shocks.

Do not leave cables lying around; have them laid properly to prevent accidents.

1. Plug the power cord into the power connector (17) on the device.
2. Insert the mains plug into a grounded mains socket.

12. Operation

a) General Operation

• Press the ⏻ button (1) to turn the device on or off.
• To increase volume, turn the rotary knob (4) clockwise or press the + button (20) on the remote.
• To decrease volume, turn the rotary knob (4) counter-clockwise or press the - button (19) on the remote.
• To select audio source, press the rotary knob (4) or the MODE button (18). The input indicator (3) shows the selected source.
• Press the ▶▶II button (8) to pause or resume playback.

When using the remote control, point it at the IR receiver (6) on the device.

b) Playing Audio Files from USB and SD Storage Media

The device has a USB port (5) and an SD card reader (2). You can play audio files from these media.

Caution: Do not connect a battery-operated MP3 player to the USB port (5). The power supplied can charge batteries, leading to overheating or explosion.

Supports USB storage media and SD cards up to 32 GB.

The USB port (5) only supports USB storage media. MP3 players may switch to PC mode, which does not support music playback.

Due to the variety of media and manufacturer-specific functions, recognition and functionality are not guaranteed.

If media is not recognised, try reconnecting it.

1. Plug your USB storage medium into the USB port (5) or your SD memory card into the SD card reader (2).
2. The amplifier will automatically switch to the input and start playback.

Playback Functions

• ▶▶II (8): Start or stop playback (Play/Pause).
• Briefly press ◀◀ (7): Skip to the previous track.
• Press and hold ◀◀ (7): Rewind the current track.
• Briefly press ▶▶ (9): Skip to the next track.
• Press and hold ▶▶ (9): Fast-forward the current track.

c) Bluetooth® Playback

The amplifier supports Bluetooth® for audio streaming. Pairing is required for data exchange.

Pairing

1. Switch on the amplifier.
2. Press the rotary knob (4) or MODE button (18) to select BT input.
3. Turn on your mobile phone and enable Bluetooth® mode (refer to your phone's manual).
4. Activate search for nearby Bluetooth® devices on your phone.
5. When found, your phone will display the amplifier's Bluetooth® name (RF-WAM-500).
6. Connect your mobile phone to the amplifier.
7. Enter password 0000 if prompted.
8. Bluetooth® playback is ready after pairing.

If pairing fails, repeat the steps. You may need to delete the amplifier from your phone's Bluetooth® settings.

Only one Bluetooth® device can be paired at a time. Existing connections must be disabled.

Connections may be interrupted if devices move out of range or are switched off. They will automatically re-establish when back in range and powered on. Ensure automatic reconnection is enabled on your mobile phone.

Playback Functions

• ▶▶II (8): Start or stop playback (Play/Pause).
• Press ◀◀ (7): Skip to the previous track.
• Press ▶▶ (9): Skip to the next track.

13. Troubleshooting

This amplifier uses the latest technology and is safe, but malfunctions can occur.

Always observe safety information.

The amplifier does not switch on

• Mains plug not plugged in.
• Power cord not connected to connector (17).
• No power to the mains socket.
• Amplifier's fuse is defective.

There is no sound

• Audio playback device is switched off.
• Source device output incorrectly configured or disabled.
• Wrong input selected on amplifier.
• Volume is set to minimum.

There is no sound from one of the channels

• Connecting cable disconnected from source or amplifier input.
• Speaker wire loose from clamps.

There is a humming sound

• A connecting cable is defective.

The sound is distorted

• Input signal too strong or false.
• Volume is too high.

There is no bass

• Speaker connected in reverse polarity.

Bluetooth® playback is interrupted

• Devices are not within range.
• Nearby devices interfere with wireless transmission. Increase distance from interfering devices.

No Bluetooth® playback

• Volume on Bluetooth® device is set to minimum.
• Bluetooth® connection interrupted; re-establish and try again.
• Devices are not within range.

Any repair work other than described must be carried out by an authorised technician.

14. Declaration of Conformity (DOC)

Conrad Electronic SE declares that this product conforms to Directive 2014/53/EU.

Read the full text of the EU Declaration of Conformity at: www.conrad.com/downloads. Enter the product item number in the search box.

15. Cleaning and Maintenance

Observe safety instructions before cleaning or servicing.

Live components may be exposed when housing is opened.

Disconnect from all power supplies before servicing.

Capacitors may still carry voltage.

Repair work must only be done by qualified technicians.

a) Cleaning

• Never use aggressive detergents, rubbing alcohol, or chemical solutions.
• Disconnect from power supply before cleaning.
• Use a dry, lint-free cloth.

b) Changing the Fuse

Use only fuses of the specified type and rated current.

Never bridge or repair the fuse holder.

1. Unplug the mains plug and disconnect the power cord from connector (17).
2. Carefully remove the fuse holder and defective fuse using a screwdriver.
3. Replace the defective fuse with a new one of the specified type.
4. Carefully push the fuse holder with the new fuse back into connector (17).
5. Reconnect the device to the mains.

16. Disposal

a) Product

Electrical and electronic equipment must be disposed of separately from municipal waste.

Owners of WEEE must dispose of it separately. Batteries, accumulators, and lamps must be removed before handover.

Distributors are obliged to provide free take-back. Conrad offers return options at stores, collection points, and public disposal agencies.

End users are responsible for deleting personal data.

b) (Rechargeable) Batteries

Remove and dispose of batteries separately. Disposal in household waste is prohibited.

Batteries containing hazardous substances are labelled with a symbol indicating prohibition of household waste disposal.

Used batteries can be returned free of charge to local collection points, Conrad stores, or battery retailers.

Cover exposed battery terminals with insulating tape before disposal to prevent short circuits.

17. Technical Data