Danieldsouza
Membro Novato |
# ontem às 09:43 · Editado por: Danieldsouza
Hi everyone,
I’m currently working on a small DIY audio setup and recently got a 3-channel (2.1) digital subwoofer amplifier board based on the TPA3116D2 chips. It’s rated around 50W + 50W for stereo and 100W for subwoofer, running on a 12V–24V DC supply, and supports 4–8 ohm speakers.
I’m trying to build a compact setup (maybe for a desktop or small room), but I’ve run into a few doubts and would really appreciate some guidance:
My Questions
1. Power Supply Selection
What would be an ideal PSU rating (amps/watts) for stable performance?
Is 12V enough, or should I go closer to 24V for better output?
2. Subwoofer Integration
Does this type of board require an external low-pass filter, or is it usually handled onboard?
If external is better, any suggestions on simple crossover setups?
3. Heat Management
The board claims high efficiency, but should I still add a heatsink or cooling fan for long usage?
I’ve seen mixed opinions on Class D boards running hot.
4. Audio Input Setup
I plan to use a Bluetooth receiver module as input.
Is there anything specific I should watch out for (noise, grounding, etc.)?
5. Real Output vs Rated Output
From your experience, how close do these boards get to their rated power?
I’ve heard some boards don’t deliver full RMS unless properly powered.
Goal
Just aiming for a clean, balanced 2.1 setup with decent bass—not super high volume, but good clarity and efficiency.
If anyone has worked with similar TPA3116D2-based 2.1 amplifier boards, I’d really appreciate your insights or even mistakes to avoid.
Here is the reference for the product nullClick here
Thanks in advance!
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