Amesra M19 BT Mini Bluetooth Digital Power Amplifier User Manual

**Amesra M19 BT Mini Bluetooth Digital Power Amplifier User Manual

**

Thank you very much for purchasing our company’s product. To fully utilize the functions provided by the product, please read this manual carefully before use and set it up correctly as required. Please keep this manual properly for future reference in case of any problems.

Front Panel Introduction

Back Panel Introduction

Operation Instructions

1. Input Signal Key: Click to switch signal sources.

2. Signal Indicator Light Explanation:
   LINE: RCA input, COA: Coaxial, OPT: Optical, BT: Wireless Bluetooth

3. Remote Control Receiver Window: Infrared remote control receiver window, effective within 5-8 meters.

4. Headphone Output: Connect wired headphones/active speakers (80mW 320).

5. Microphone Interface: 6.5mm microphone interface.

6. Bass Adjustment:
   Bass adjustment: Decrease to the left, increase to the right (-12dB to +12dB)
   Previous song: Click

7. Treble Adjustment:
   Treble adjustment: Decrease to the left, increase to the right (-12dB to +12dB)
   Next song: Click

8. Main Switch:
   Power On/Off: Turn right to power on, turn left to power off.
   Main volume adjustment: Increase volume to the right, decrease volume to the left.
   Play/Pause: Click to pause/play music.

9. Ambient Light
   Power on: RGB gradient light flashes.
   Main volume adjustment: Increase/decrease in pink light ring.
   Bass adjustment: Increase/decrease in yellow light ring.
   Treble adjustment: Increase/decrease in blue light ring.

10. Bluetooth Antenna: External 2.4G Bluetooth antenna.

11. LINE IN: Left channel input/Right channel input.

12. COAXIAL IN: Coaxial signal input.

13. OPTICAL IN: Optical signal input.

14. Speakers: Left channel speaker output / Right channel speaker output.

15. Power Interface: Supports DC12-24V input.

Remote Control Diagram

1. Microphone volume adjustment/reverb size adjustment/voice cancellation function is only valid after the microphone is plugged in. Some function keys may not be functional in different versions, please be aware.
2. When switching input signals with a single click, pay attention to observe the indicator lights on the front panel of the product.
3. When using, please aim at the remote control receiver window on the front panel of the adapter, with an effective remote control distance of about 5-8 meters.

First wiring method

1. Use the correct specification wire to connect the speakers, peel off about 10 mm of insulation from both ends of the wire. If the bare wire is loose, twist the wire core tightly;
2. When connecting the speaker terminal, unscrew the knob, insert the bare wire, and tighten the knob.

Note : Connect the red end to the red interface of the speaker (+ positive pole) Connect the black end to the black interface of the speaker (- negative pole)

Second wiring method

The speaker terminals of this machine can also fit banana plug. The method is as follows:

1. First, tighten the speaker terminal knob;
2. Then insert the banana plug into the corresponding hole.

Note: Connect the red end to the red interface of the speaker (+ positive pole) Connect the black end to the black interface of the speaker (- negative pole)

Usage Diagram

Note:

1. Avoid short circuit when connecting positive/ negative poles. Avoid reversing L/R left and right channels.
2. When supplying power, first insert the DC plug into the amplifier DC hole, and then plug in the 220V power plug.

The amplifier has various usage methods, and it is not 6 possible to list them all. Your understanding is appreciated!

Front Earphone Output/Microphone Input

Note:

1. The front 3.5mm headphone output jack can be connected to wired headphones or active speakers.
2. The microphone interface supports 6.5mm standard microphone.

Wired Connection Method

1. Connect the amplifier to the computer/TV via RCA interface, COA coaxial interface, or Optical fiber interface.
2. Use a signal cable to connect the speaker output interface of this product to the audio input interface of the passive speaker, and ensure that the left/right channel and positive/negative poles are connected correctly (refer to wiring method first/method second).
3. Turn all the knobs of the amplifier counterclockwise, insert the power DC plug into the amplifier DC hole, then plug in the 100-240V power supply, and turn on the power switch. The circular light ring will display multi-color gradients.
4. Click the input signal key to switch to the correct signal (LINE/COA/OPT).
5. Play music from the computer or TV.

Wireless Bluetooth Connection Method

Before using the Bluetooth function, please remove the Bluetooth antenna from the accessories and install it on the antenna interface on the back panel of the amplifier host by rotating it clockwise to tighten.

1. Use a signal cable to connect the speaker output interface of this product to the audio input interface of the passive speaker, and ensure that the left/right channel and positive/negative poles are connected correctly (refer to wiring method first/method second).
2. Turn all the knobs of the amplifier counterclockwise, insert the power DC plug into the amplifier DC hole, then plug in the 100-240V power supply, and turn on the power switch. The circular light ring will display multi-color gradients.

Note : This product has a full aluminum alloy shell. Before using the wireless Bluetooth function, be sure to tighten the Bluetooth antenna to the corresponding interface to ensure signal strength. Bluetooth is a 2.4G signal, and the signal is about 10-20 meters in a straight line without obstacles.

Microphone Singing Function

The product is equipped with a professional-grade singing chip, which effectively suppresses squealing, and the front panel is equipped with a 6.5 mm microphone interface. The microphone volume and reverb volume can be adjusted through the remote control.

RGB Ambient Light

Package Contents Checklist

(Please check if the following items are included in the package)

• Power Amplifier
• AUX Audio Cable
• RCA Audio Cable
• Bluetooth Antenna
• Infrared Remote Control
• Power Adapter
• User Manual

Common problems

1. The signal source indicator light or RGB indicator light on the device

does not light up normally?

Answer: Please check if the device is properly connected to the power adapter function, or check if the power parameters are compliant

2. Unable to connect the phone to Bluetooth?

Answer: Make sure the current signal source is Bluetooth (BT) and the indicator light is flashing rapidly. If it still doesn't work, please clear the Bluetooth pairing name on the phone, ensure there are not too many Bluetooth names on the phone, and then search and pair again.

3. No sound output from the speaker?

Answer: First, check if the device's speaker terminal is correctly connected to the speaker. Ensure that the L/R left and right channels are correctly connected, as incorrect connections may result in no sound output or damage to the speaker. Secondly, check if the current signal source is correct.

4. No sound output from the 3.5mm headphone jack?

Answer: First, check if the current signal source of the device is correct. When the aux interface is connected to wired headphones or active speakers, the device will automatically disconnect the speaker output. Unplug the aux cable to automatically switch to speaker output.

5. Can all four signals be input and played simultaneously?

connecting multiple signal sources, you can switch to the desired audio for playback by pressing the buttons.

6. Does the digital optical and coaxial support audio input and output?

Answer: The optical fiber and coaxial interfaces only support audio input.

7. What are the requirements for the power adapter? What should be noted

when powering?

Answer: Use a DC12-24V adapter. Before supplying power, rotate the main switch to the leftmost position, then insert the DC plug into the DC hole on the back of the amplifier, and then plug in the 100-240V power plug.

Specifications

Product Name: Mini Bluetooth Digital Power Amplifier
Product Model: M19 BT
Input Signal: RCA + Coaxial + Optical + Microphone + Bluetooth
Output Mode: Passive Speaker + 3.5mm Headphone Output Audio
Interfaces: 3.5mm, RCA, Coaxial, Optical, 6.5mm Microphone
Output Power: 100Wx2 / 4Ω Speaker
Impedance Support: 2-80
Amplifier Chip: TPA3116x2
Input Power: DC12-24V
Frequency Range: 20Hz-20kHz
Bluetooth Name: M19 BT
Bluetooth Version: V5.3
Bluetooth Protocol: SBC/AAC
Bluetooth Distance: Unobstructed about 10-20 meters
Signal-to-Noise Ratio: 298dB
Sampling Rate: 192KHz, 24bit Net
Weight: Approximately 0.297KG
Product Size: Approximately L119W111H114(mm)

Warning

• This product is powered by 12-24V+5%. Exceeding the standard voltage may cause product damage or safety hazards.
• Do not use near magnets or strong magnetic fields, as this may affect the normal function of the product or cause damage.
• Avoid dropping or strong impact, as rough use may cause damage.
• This product is an audio transmission device and does not support transmission of images/files, etc.
• Please avoid using in extreme high or low temperatures, as well as in humid, corrosive environments.
• The device should not be exposed to water droplets or splashes, and should not be thrown or thrown into water or fire at will.
• The power adapter provided with this product should not be exposed to conditions such as sunlight, fire, or similar overheating environments.
• Please supervise children to ensure they do not treat this product as a toy.
• If you need to disassemble this product, please contact the after-sales service or authorized manufacturer for assistance.

Learn More
For more information about the product, please carefully read the user manual or contact the online distributor. Due to continuous product improvements, specifications, designs, and packaging may change at any time without prior notice!

FCC Warning

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

To assure continued compliance, any changes or modifications not expressly approved by the party.
Responsible for compliance could void the user’s authority to operate this equipment. (Example- use only shielded interface cables when connecting to computer or peripheral devices).
This equipment complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation.
FCC Radiation Exposure Statement:
The equipment complies with FCC Radiation exposure limits set forth for uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.

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