E-Lektron EL-2BT Stereo HiFi Amplifier

1. Introduction

This manual provides detailed instructions for the safe and efficient operation of your E-Lektron EL-2BT Stereo HiFi Class D Amplifier. Please read this manual thoroughly before using the device and retain it for future reference. The EL-2BT amplifier features Bluetooth connectivity, an FM radio tuner, an MP3 player via USB/SD, and karaoke functionality.

Safety Instructions

• Do not open the amplifier casing. There are no user-serviceable parts inside. Refer all servicing to qualified personnel.
• To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture.
• Ensure proper ventilation. Do not block any ventilation openings.
• Connect the amplifier only to a power supply of 230Vac, 50Hz.
• Always ensure correct speaker polarity when connecting.

2. Package Contents

Verify that all items are present in the package:

• E-Lektron EL-2BT Stereo HiFi Amplifier
• Power Cable
• User Manual (this document)

This image presents the EL-2BT amplifier alongside its detachable power cable, illustrating the typical contents of the product package.

3. Product Overview

3.1 Front Panel

This image displays the front panel of the EL-2BT amplifier, featuring the power switch, AUX input, input selector, tone controls, USB and SD card slots, display, media controls, microphone inputs, and master volume knob.

1. POWER Switch: Turns the amplifier on or off.
2. AUX INPUT (3.5mm Jack): Connect external audio devices (e.g., smartphone, tablet).
3. INPUT SELECTOR: Rotary knob to select audio source (LINE, CD, AUX, MEDIA PLAYER).
4. BASS Control: Adjusts low-frequency audio output.
5. TREBLE Control: Adjusts high-frequency audio output.
6. ECHO Control: Adjusts the echo effect for microphone inputs.
7. TONE Control: General tone adjustment.
8. MIC VOLUME Control: Adjusts the volume of connected microphones.
9. USB Port: Connect USB flash drives for MP3 playback.
10. SD CARD Slot: Insert SD cards for MP3 playback.
11. Display: Shows current mode, track number, or FM frequency.
12. Media Controls (VOL-, VOL+, MODE):
    • VOL- / Previous: Short press for previous track/station, long press for volume down.
    • VOL+ / Next: Short press for next track/station, long press for volume up.
    • MODE: Switches between Bluetooth, FM Radio, and MP3 (USB/SD) modes.
13. Bluetooth Indicator: Lights up when Bluetooth is active.
14. MIC 1 / MIC 2 Inputs (6.3mm Jack): Connect microphones for karaoke.
15. MASTER VOLUME Control: Adjusts the overall output volume.

3.2 Rear Panel

This image shows the rear panel of the EL-2BT amplifier, including RCA inputs for CD/Line, FM antenna terminal, speaker output terminals, and the power input socket.

16. CD / LINE Inputs (RCA): Connect external audio sources like CD players or other line-level devices.
17. FM ANTENNA Terminal: Connect an external FM antenna for radio reception.
18. SPEAKER OUTPUT (L/R): Connect passive speakers using speaker wire. Ensure correct polarity (+ and -).
19. POWER INPUT: Connect the provided power cable.

4. Setup

4.1 Connecting Speakers

1. Ensure the amplifier is turned off and unplugged from the power outlet.
2. Connect your passive speakers to the SPEAKER OUTPUT terminals on the rear panel.
3. Match the positive (+) terminal on the amplifier to the positive (+) terminal on your speaker, and the negative (-) terminal on the amplifier to the negative (-) terminal on your speaker. Incorrect polarity can affect sound quality.
4. Tighten the terminals securely to ensure a good connection.

4.2 Connecting Audio Sources

• RCA Inputs (CD / LINE): Use RCA cables to connect devices like CD players, DVD players, or other audio sources to the corresponding inputs on the rear panel.
• AUX Input (3.5mm Jack): Use a 3.5mm audio cable to connect portable devices such as smartphones or MP3 players to the AUX INPUT on the front panel.

4.3 Connecting FM Antenna

Connect a suitable FM antenna (not included) to the FM ANTENNA terminal on the rear panel for optimal radio reception.

4.4 Power Connection

1. Ensure all other connections are made.
2. Connect the provided power cable to the POWER INPUT on the rear panel of the amplifier.
3. Plug the other end of the power cable into a standard 230Vac, 50Hz wall outlet.

5. Operating Instructions

5.1 Power On/Off

Press the POWER switch on the front panel to turn the amplifier on or off. The display will illuminate when the unit is powered on.

5.2 Source Selection

Use the INPUT SELECTOR rotary knob on the front panel to choose between LINE, CD, and AUX inputs. For Bluetooth, FM Radio, or MP3 (USB/SD) modes, turn the knob to "MEDIA PLAYER" and then press the MODE button repeatedly to cycle through these digital sources.

5.3 Bluetooth Operation

1. Select the "MEDIA PLAYER" input using the rotary knob.
2. Press the MODE button until "BLUE" or a similar indicator appears on the display, and the Bluetooth indicator light flashes.
3. On your Bluetooth-enabled device (e.g., smartphone), search for available Bluetooth devices and select "EL-2BT" (or similar) from the list.
4. Once paired, the Bluetooth indicator light will become solid, and you can play audio from your device through the amplifier.

5.4 FM Radio Operation

1. Select the "MEDIA PLAYER" input using the rotary knob.
2. Press the MODE button until "FM" or the radio frequency appears on the display.
3. To perform an automatic station scan, press and hold the MODE button. The amplifier will scan and save available FM stations to presets (up to 40).
4. To cycle through saved stations, short press the VOL- or VOL+ buttons.

5.5 MP3 Playback (USB/SD)

1. Insert a USB flash drive into the USB Port or an SD card into the SD CARD Slot on the front panel.
2. Select the "MEDIA PLAYER" input using the rotary knob. The amplifier should automatically switch to USB or SD mode and begin playing MP3 files. If not, press the MODE button to select the correct source.
3. Use the VOL- and VOL+ buttons for track navigation (short press for previous/next track).
4. Note: The MP3 player supports basic playback. Advanced functions like random play, repeat modes, or playlist support are not available. Track titles are not displayed.

5.6 Karaoke Function

1. Connect up to two microphones to the MIC 1 and MIC 2 inputs on the front panel.
2. Adjust the microphone volume using the MIC VOLUME control.
3. Use the ECHO control to add an echo effect to the microphone audio.

5.7 Volume and Tone Controls

• MASTER VOLUME: Adjust this knob to control the overall output volume of the amplifier.
• BASS: Rotate to increase or decrease low-frequency sounds.
• TREBLE: Rotate to increase or decrease high-frequency sounds.
• TONE: Provides a general adjustment for the audio tone.

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Do not use liquid cleaners or solvents.
• Storage: When not in use for extended periods, store the amplifier in a cool, dry place, away from direct sunlight and extreme temperatures.
• Ventilation: Ensure that the ventilation openings are kept clear of dust and debris to prevent overheating.

7. Troubleshooting

8. Specifications

9. Warranty and Support

The E-Lektron EL-2BT amplifier comes with a guaranteed spare parts availability of 2 years from the date of purchase. For technical support, warranty claims, or service inquiries, please contact your retailer or the manufacturer directly. Please have your model number (EL2-BT) and proof of purchase ready when contacting support.