APTX-HD Bluetooth Audio Receiver Board CSR8645 CSR8640 QCC3034 QCC3005 Amplifers Bluetooth Module Lossless For Power Amplifier

APTX-HD Bluetooth Audio Receiver Board CSR8645 CSR8640 QCC3034 QCC3005 Amplifers Bluetooth Module Lossless For Power Amplifier

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1.QCC3034 uses Qualcomm QCC3005 Bluetooth solution, version 5.0. Support: AAC/SBC/A2DP/APTX-HD/APTX-LL protocol


2.CSR8645 uses CSR8645 Bluetooth solution, version 4.2. Support: AAC/SBC/A2DP/APTX protocol


3.CSR8640 uses CSR8640 Bluetooth solution, version 4.0. Support: AAC/SBC/A2DP protocol


1. DC power input interface, GND for the power supply negative, +12 V for the power supply positive. Wide voltage: DC6-36V

2.AUX audio interface, LINE_INR right channel input, GND common ground, LINE_INL left channel input

3. Audio output interface, R_OUT right channel output, GND common ground, LINE_OUT left channel input

4. Audio switching relay, NEC import

5. Bluetooth antenna for receiving signals

6. Bluetooth work light 1

7. Bluetooth work light 2

8.CSR8645 Bluetooth 4.2 , support APT-X lossless signal reception

Qualcomm CSR8645 Bluetooth 4.2 solution,
supports APTX SBC, AAC, A2DP
Bluetooth protocol.



Note:

If the conversion, the Bluetooth work with a slight noise at the end of noise or interference with the sound, plus a small power supply 6-36V 500MA or more, to the Bluetooth module independent, you can solve the noise problem, and equipment sharing power easy to produce a total ground interference noise



Feature:

1. The product is suitable for converting audio amplifiers, amplifier boards DIY, amplifier preamp effects, etc.

The traditional wired transmission is converted to wireless Bluetooth transmission. The module uses the QCC3008 high-fidelity Bluetooth chip. The Bluetooth 5.0 high-speed transmission ensures that the audio data is transmitted to the analog amplifier without loss. In order to achieve wireless HIFI level sound quality.


3. The module supports APT-X lossless reception and the sound quality level reaches the CD level. Is a truly lossless Bluetooth receiver module. This module is a Bluetooth receiver that outputs a standard single-ended analog audio signal.

4. The audio signal can be directly provided to the front or rear stage analog amplifier without additional DAC deer. To facilitate DIY friend conversion needs.

5. The module supports AUX input to facilitate external linear audio. Between the AUX and Bluetooth, imported NEC high-precision relays are used for switching. The AUX input is switched directly by the relay without any chip processing. Ensure lossless output of AUX audio to the amplifier.

Bluetooth antenna installation method:
the thickness of the panel installed on the Bluetooth antenna holder should be between 1-3mm.

As shown in Figure 1. If the installed panel is too thick, the antenna will not be able to touch the contacts of the antenna base, and the external wire will fail.

For installation on a panel with a thickness greater than 3mm, the correct approach is to reduce the thickness of the panel's Bluetooth antenna holder installation position, as shown in Figure 2. Reduce the thickness to the remaining 3mm, and measure the size by yourself. the image is only a reference.


What is the function of AUX input with relay?

Answer: This is to help solve the problem of installing a Bluetooth receiver board on power amplifiers or active speakers with only one audio input.

For example, a computer active speaker has only one input function. When connecting a Bluetooth receiver board, you cannot plug in external audio sources such as a computer sound card or CD player. The audio input needs to be unplugged, which is very inconvenient to use. If there is an AUX input, you can use the Bluetooth AUX interface to connect to external audio sources such as a computer sound card or CD player, and the output interface of the Bluetooth receiver board is connected to the input of an active speaker, so there is no need to unplug the cable. AUX mode. After Bluetooth is connected, the Bluetooth output will be automatically switched, and when Bluetooth is disconnected, it will automatically switch to the AUX interface. Power off is also the AUX direct connection function.