renkforce 2521586 2 x 50 W Stereo Amplifier Instruction Manual

renkforce 2521586 2 x 50 W Stereo Amplifier

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

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.

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.

Delivery content

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

Up-to-date operating instructions
Download the latest operating instructions at www.conrad.com/downloads or scan the QR code shown. Follow the instructions on the website.

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

Safety information

Read the operating instructions carefully and observe in particular the safety instructions. If you do not follow the safety information and information on proper handling in these operating instruc-tions, we will assume no liability for any resulting personal injury or damage to property. Such cases will invalidate the warranty/guarantee.

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. It may become a dangerous plaything for children.
• 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 it is no longer possible to operate the product safely, stop using it and prevent unauthorised use. Safe operation can no longer be guaranteed if the product:
  • is visibly damaged,
  • is no longer working properly,
  • has been stored for extended periods in poor ambient conditions or
  • has been subjected to any serious transport-related stress.
• Handle the product carefully. It can be damaged by impact, blows, or by being dropped, even from a low height.
• Consult a technician if you are not sure how to use or connect the product, or if you have safety concerns.
• Maintenance, modifications and repairs must be carried out by a technician or a specialist repair centre.
• If you have questions that remain unanswered by these operating instructions, contact our technical support service or other technical personnel.
• Pay attention to all additional safety information in the individual sections of these operating instructions.
• Do not operate the device when it is unattended.
• Only use the product in temperate climates. It is not suitable for use in tropical climates.

Connected devices

• Always observe the safety information and operating instructions of any other devices which are con-nected to the product.

Electrical safety

• The mains socket must be close to the device and easily accessible.
• Never touch the mains plug with damp or wet hands. This may cause a fatal electric shock!
• Ensure that the power cord is not pinched, bent, damaged by sharp edges or otherwise subjected to mechanical stress. Avoid excessive thermal stress on the power cord from extreme heat or cold. Do not modify the power cord. Failure to follow this instruction may damage the power cord. A damaged power cord can cause a fatal electric shock.
• Do not touch the power cord if there are any signs of damage. Switch off the appropriate mains socket (e.g. via the respective circuit-breaker and RCD), and then carefully unplug the device from the mains socket. Never use the product if the power cord is damaged.
• Never place objects containing liquid (e.g. glasses, buckets, vases or plants) on or directly next to the device. Liquids may seep into the housing and impair the electrical safety of the product. There is also the risk of a fire or a fatal electric shock. Isolate the mains socket (e.g. switch off the circuit breaker and RCD), and then disconnect the mains plug from the mains socket. Discontinue use and take the product to a specialist repair centre.
• Ensure that the device is adequately ventilated during use. Do not cover ventilation holes with maga-zines, table cloths, curtains or other objects.
• Do not place naked flames, such as burning candles, on or in the vicinity of the device.

Batteries

• Dispose of used batteries as described in the section “Disposal”.
• Never throw batteries into fire. This may cause a fire or explosion!
• When handling leaking or damaged batteries, always use suitable protective gloves to avoid burning your skin.
• Liquids leaking from batteries are very chemically aggressive. Objects or surfaces coming into contact with these liquids may be severely damaged.
• Batteries must not be dismantled, short-circuited or thrown into fire. Never attempt to recharge non-rechargeable batteries. There is a risk of explosion.

Controls

1. Power button
2. SD card reader
3. Audio input indicator
4. Rotary knob
5. USB interface
6. IR receiver
7. backward button
8. pause button
9. forward button
10. Headphone jack
11. INPUT AUX1 to AUX3 connector
12. AUX OUTPUT connector
13. BASS OUTPUT connector
14. SPEAKERS connectors
15. Power connector
16. MODE button
17. – button
18. + button

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 dampness. 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.

Inserting the 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. Always ensure that the batteries are inserted in 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.

Connections

Ensure that the mains plug is disconnected before connecting the amplifier.
Before connecting the device, turn off all devices that you want to connect to the amplifier.

Connecting external devices

Only connect devices with the same sockets as those found on the amplifier to the respective audio connectors.
The respective devices should only be connected via suitable connecting cables. Unsuitable cables may cause interferences or malfunctions.
Overview of connections

connect tuners, CD players, etc.
AUX OUTPUT (12)| Audio output for units with RCA input.| Used to connect active speakers
BASS OUTPUT (13)| Audio output for units with RCA input (bass frequencies only)| Used to connect an active subwoofer

• The RCA socket marked with “L” is connected to the left RCA connector of the respective unit.
• The RCA socket marked with “R” is connected to the right RCA connector of the respective unit.

Connecting speakers

• Two cables are required to connect each speaker. Insulate all connecting terminals. Ensure there are no sharp edges that may damage the cables.
• Ensure that your speakers have a sufficiently high power rating (see “Technical data”).
• Connect the speakers directly to the amplifier. Do not use headphone adapters or distribution boxes. If you are not sure how to connect your speakers, contact a specialist.
• Check that all speakers are connected in the correct polarity (observe the plus and minus markings).
• This amplifier has been designed for speakers with an impedance of 4-8 Ohms. Only connect one speaker to each output.
• You can connect banana plugs or stripped speaker wires (max. 2.5 mm in diameter).
• If your speakers come with banana plugs, insert the plugs into the speaker connections on the amplifier.
• To attach speaker wires, unscrew the clamps slightly and insert the stripped ends of each wire. Tighten the clamps to secure the wires in place. To prevent a short circuit, ensure that the strands on the speaker wires are fully inserted into the clamps.

Connecting the SPEAKERS connectors (14)

Connecting headphones

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

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

The speakers are automatically disabled when headphones are connected.

Mains connection

The mains socket to which the amplifier is connected must be in close vicinity to the device and easily accessible so that the device can be easily disconnected from the mains in the event of a fault.
Make sure that the voltage indicated on the amplifier corresponds with your household mains voltage. Never attempt to operate the device with any other type of voltage.
Do not let the power cord come into contact with other cables.
Exercise caution when handling power cords and mains connections. Mains voltages can cause fatal electric shocks.
Do not leave cables lying around; ask an electrician to lay them properly to prevent the risk of an accident.

1. Plug the power cord into the power connector (15) on the device.
2. Insert the mains plug into a grounded mains socket.

Operation

General operation

• Pressing the button (1) turns the device on and off.
• To increase the volume, turn the rotary knob (4) clockwise or press the + button (18) on the remote control.
• To decrease the volume, turn the rotary knob (4) counter-clockwise or press the – button (17) on the remote control.
• To select the audio source, press the rotary knob (4) or the MODE button (16) on the remote control. The audio input indicator (3) shows the selected audio source.
• Press the button pause (8) to pause or resume playback.

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

Playing audio files from USB and SD storage media

The device is equipped with a USB port (5) and an SD memory card reader (2). You can play audio files from these storage media (see “Technical data” at the end of this manual for details on supported file formats).

• Do not connect a battery-operated MP3 player to the USB port (5). The power supplied via the USB port (5) can charge the batteries and thus cause them to overheat and even explode.
• The device supports USB storage media and SD memory cards up to 32 GB.
• The USB port (5) only supports USB storage media. MP3 players with a USB port automatically switch to the PC mode when plugged into this port. Playback of audio files is not possible in this mode.
• We cannot guarantee that all USB and SD storage media will be recognised due to their manufacturer-specific functions and that the functionality of those recognised will not be restricted.
• If your USB storage medium or SD memory card is not recognised, try reconnecting it to the device.

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

Playback functions
Buttons with the same designations on the device and the remote control have the same functions.

Bluetooth® playback

The amplifier supports Bluetooth®, allowing you to stream audio from a Bluetooth® device. Your mobile phone or Bluetooth® device and the amplifier must be paired to enable data exchange between them. This process is called “Pairing”.
Pairing

1. Switch on the amplifier.
2. Press the rotary knob (4) or the MODE button (16) on the remote control and set the audio input to BT.
3. Turn on your mobile phone and enable the Bluetooth® mode (refer to your mobile phone’s instruction manual for details).
4. In your mobile phone settings, activate search for nearby Bluetooth® devices.
5. When the amplifier has been found, its Bluetooth® name (RF-WAM-300) appears on the display of your Bluetooth® device.
6. Connect your mobile phone to the amplifier.
7. When prompted to enter a password, enter 0000.
8. After the pairing process is complete, you can use Bluetooth® playback.

• If the pairing process has failed, repeat the above steps. You may need to delete the amplifier from your mobile phone (refer to your mobile phone’s instruction manual for details).
• You can only pair one Bluetooth® device with the amplifier at any one time. If the amplifier is already paired with another device, the existing connection must be disabled.
• This can be done through the menu settings of your mobile phone.
• The connection between the amplifier and the mobile phone will be interrupted if they move out of range, or if you switch off the amplifier and/or mobile phone. The connection will be automatically re-established when the amplifier and mobile phone are switched on and within range.
• Ensure that you enable the automatic reconnection feature on your mobile phone; otherwise, the Blue-tooth® connection will not be automatically re-established (refer to your mobile phone’s instruction manual for details).

Playback functions
Buttons with the same designations on the device and the remote control have the same functions.

Troubleshooting

This amplifier is built using the latest technology and is safe to use. However, problems and malfunctions may still occur. Follow the instructions below to troubleshoot possible faults:
Always follow the safety instructions!
The amplifier does not switch on

• The mains plug is not plugged into the mains socket.
• The power cord is not connected to the power connector (15).
• The mains socket is switched of.
• The amplifier’s fuse is defective.

There is no sound

• Your audio playback device is switched off.
• The wrong input was selected on the amplifier.
• The volume is set to minimum.

There is no sound from one of the channels

• A connecting cable was disconnected from the source device or the amplifier input.
• One of the speaker wires has become loose from the clamps on the amplifier or speaker.

There is a humming sound

• A connecting cable is defective.
• The sound is distorted
• The signal received by the amplifier is too strong.
• The volume is too high.

There is no bass

• One of the speakers is connected in the reverse polarity.

Bluetooth® playback is interrupted

• The devices are not within range.
  Other devices nearby are interfering with wireless transmission. Move away from other wireless devices or devices that may cause high interference (e.g. powerful electric motors, fluorescent lamps and microwaves).

No Bluetooth® playback

• The volume on your Bluetooth® device is set to minimum.
• The Bluetooth® connection was interrupted. Re-establish the connection and try again.
• The devices are not within range.
  Any repair work other than that described above must be carried out by an authorised technician.

Declaration of Conformity (DOC)

Conrad Electronic SE, Klaus-Conrad-Straße 1, D-92240 Hirschau, hereby declares that this product conforms to Directive 2014/53/EU.
Click on the following link to read the full text of the EU Declaration of Conformity:
www.conrad.com/downloads
Enter the product item number in the search box. You can then download the EU declaration of conformity in the available languages.

Cleaning and maintenance

Always observe the following safety instructions before cleaning or servicing the amplifier:

• Live components may be exposed when the housing is opened or components are removed.
• The device must be disconnected from all power supplies before carrying out any servicing or repair work.
• Capacitors inside the device may still carry a voltage when they have been disconnected from the power supply.
• Repair work must only be done by qualified technicians who are familiar with the potential hazards and the relevant regulations.

Cleaning

Never use aggressive detergents, rubbing alcohol or other chemical solutions, as these may damage the housing or prevent the product from functioning properly.

• Always disconnect the product from the power supply before cleaning it.
• Use a dry, lint-free cloth to clean the product.

Changing the fuse

If you need to replace the fuse, only use fuses of the specified type and rated current (see “Technical data” for details).
Never attempt to bridge or repair the fuse holder.

1. Unplug the mains plug from the mains socket and disconnect the power cord from the power connector (15).
2. Carefully remove the fuse holder and the defective fuse from the power connector (15) using a suitable screw-driver.
3. Remove the defective fuse and replace it with a new fuse of the specified type.
4. Carefully push the fuse holder with the new fuse back into its position in the power connector (15).
5. Once you have installed the new fuse, reconnect the device to the mains.

Disposal

Product

All electrical and electronic equipment placed on the European market must be labelled with this symbol. This symbol indicates that this device should be disposed of separately from unsorted municipal waste at the end of its service life.
Owners of WEEE shall dispose of it separately from unsorted municipal waste. Spent batteries and accumulators, which are not enclosed by the WEEE, as well as lamps that can be removed from the WEEE in a non-destructive manner, must be removed by end users from the WEEE in a non-destructive manner before it is handed over to a collection point.
Distributors of electrical and electronic equipment are legally obliged to provide free take-back of waste. Conrad offers the following free return options (further information is available on our website):

• at our Conrad stores
• at the collection points established by Conrad
• at the collection points of public waste disposal agencies or at the collection systems set up by manufacturers and distributors in accordance with the German Electrical and Electronic Equipment Act.

The end user is responsible for deleting personal data from the WEEE to be disposed of.
It should be noted that different obligations about the return or recycling of WEEE may apply in countries outside of Germany.

(Rechargeable) batteries

Remove any inserted batteries and dispose of them separately from the product. You as the end user are required by law (Battery Ordinance) to return all used batteries/rechargeable batteries. Disposing of them in the household waste is prohibited.
Batteries/rechargeable batteries containing hazardous substances are labelled with this symbol to indicate that disposal in household waste is forbidden. The abbreviations for heavy metals in batteries are: Cd = Cadmium, Hg = Mercury, Pb = Lead (name on batteries/rechargeable batteries, e.g. below the trash icon on the left).
Used batteries/rechargeable batteries can be returned free of charge to local collection points, our stores or battery retailers. You thus fulfil your statutory obligations and contribute to environmental protection.
Batteries/rechargeable batteries that are disposed of should be protected against short circuit and their exposed ter-minals should be covered completely with insulating tape before disposal. Even empty batteries/rechargeable batter-ies can contain residual energy that may cause them to swell, burst, catch fire or explode in the event of a short circuit.

Technical data

• Operating voltage ………………………………………200-240 V/AC 50 Hz
• Fuse …………………………………………………………F10 AL/250 V (5 x 20 mm)
• Batteries (remote control) ……………………………2 x 1.5 V AAA
• Output power …………………………………………….2 x 50 W (RMS)
• Frequency range ……………………………………….20 – 20000 Hz
• Input impedance ………………………………………..>10 kOhm
• Input sensitivity ………………………………………….<500 mV
• S/N ratio ……………………………………………………>86 dB
• Harmonic distortion …………………………………….<0.1% (@1 kHz)
• Output impedance ……………………………………..4 Ohms
• Amplifier class …………………………………………..Class D
• Storage capacity (USB/SD) …………………………max. 32 GB
• Supported USB formats ………………………………MP3, APE, FLAG
• Bluetooth® version ……………………………………..5.0
• Transmission frequency………………………………2400-2483.5 MHz
• Transmission power……………………………………20 dBm
• Dimensions (W x H x D) ……………………………..244 x 52 x 235 mm
• Weight ……………………………………………………..4.95 kg
• Operating conditions …………………………………..0 to +40 °C / <85% rel. humidity
• Storage conditions ……………………………………..-40 to +55 °C / <93% rel. humidity

This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in electronic data processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited. This publication represent the technical status at the time of printing.
Copyright 2022 by Conrad Electronic SE.

References

• Conrad Electronic » Alle Teile des Erfolgs
• Conrad Electronic – Alle Teile des Erfolgs
• Conrad Electronic » All parts of success
• Contact
• Download center
• Conrad Electronic Online Shop » Alle Teile des Erfolgs

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