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Get to Know the XY-P15W Bluetooth audio amplifier module in 3 Minutes
What is the XY-P15W?
Developed by Sinilink, the XY-P15W is a stereo Bluetooth power amplifier board. After connecting a power supply, users can pair Bluetooth devices to the module and play audio from the paired device (like play music from a connected mobile phone). It acts as the control board for a Bluetooth speaker—speakers need to be purchased separately, and sound quality depends on the speakers themselves.
The XY-P15W is designed to be a control module for small speakers, making it easy to DIY a portable speaker. It can be connected to a fixed power supply (such as a car power supply—note the voltage must be within 8-24V; voltages above 24V may damage the module, and voltages below 8V may fail to drive it).
As a Bluetooth audio control board, it does not provide noise reduction or audio correction functions. Therefore, the playback quality is largely determined by the speakers—higher-quality speakers will yield better results.
Function of XY-P15W
The XY-P15W allows users to connect to the module via Bluetooth and play audio from the connected device through a speaker. It also has a built-in semi-rotary knob that allows users to switch between songs or pause playback by turning it.
Since it doesn’t have a built-in speaker, users can DIY and purchase a speaker as long as it meets the electrical specifications. The module itself is compact and can be integrated into an enclosure.
Applicable Scenarios
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The XY-P15W can be used for DIY audio systems. If the speaker is damaged, it can be connected to other speakers for continued use. A common application is replacing a damaged home speaker with this module. It is suitable for fixed environments such as homes and cars.
Pin Definition and Connection Method
As shown in the diagram, Vin should be connected to a power supply that matches the speaker’s voltage requirements. The speaker connection must meet the electrical specifications, with no other special considerations.
Parameter Specification
| Product Specifications | Specification |
|---|---|
| Product Name | Bluetooth Digital Power Amplifier Module |
| Model | P15W |
| Operating Voltage | DC: 8-24V |
| Bluetooth Version / Range | 15 meters (Line of Sight) |
| Number of Channels | Dual Channel (Stereo) |
| Output Power (@1KHZ) | 16W*2 @ 12V 4Ω |
| 10W*2 @ 12V 8Ω | |
| 15W*2 @ 16V 8Ω | |
| 20W*2 @ 20V 8Ω | |
| 30W*2 @ 24V 8Ω (Heat Sink Required) | |
| Compatible Speakers (30W-150W) | 4Ω (8-12V Power Supply) |
| 8Ω (8-24V Power Supply) | |
| 16Ω (8-24V Power Supply) | |
| Module Protection | Reverse Polarity Protection Short Circuit Protection Auto-recovery Over-temperature Protection |
Specific Usage Demonstration
After connecting the power supply and speaker, wait for a moment for the module to start. The blue LED will flash, and you will be able to see the module’s Bluetooth on your phone. Once connected, you can start playing audio from your phone. You can play any audio or video to check if the sound quality meets expectations. The volume can be adjusted either by turning the knob or by adjusting the phone’s volume.
The effect is as demonstrated in the video.
FAQ
Can a Bluetooth amplifier improve sound quality?
A Bluetooth amplifier itself cannot improve sound quality. Sound quality is more dependent on the speakers, and software-based audio enhancement is more effective.
Is 20W twice as loud as 40w?
No. While power increases linearly, decibel (volume) increase is exponential. Taking a 10W speaker as a reference:
- A 20W speaker is 3 decibels louder than a 10W one.
- A 40W speaker is 6 decibels louder than a 10W one.
- To double the volume (perceived loudness), a 10-decibel increase is needed, which requires 100W of power.
- This is a theoretical calculation—actual volume is affected by more factors.
What is the Bluetooth range of the XY-P15W module?
The maximum Bluetooth range of the XY-P15W is 15m （no situation of visual obstruction). While not extremely long, it is sufficient for indoor use. Its compact size also allows it to be used outdoors with a battery.