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TDA7294 Subwoofer Amp.

Hello Friends, In this post I make a 100W Mono subwoofer amplifier using TDA7294 IC, which can deliver up to 90W output at 4Ω ±35V. For the low pass filter of this amplifier, I have used NE5532 IC. But in place of NE5532, you can also use 4558D/ TL072 IC. This is a subwoofer amplifier. So for that, you will connect the subwoofer only, and you can hear the low frequency. Overall the sound quality of this amplifier is very good. If you make this amplifier you will not be disappointed. For designing my PCB, I used EasyEda online software. Then I export the Gerber file (which you can download). And then I go to for manufacturing my PCB. PCBWay are the largest PCB manufacturer in China. They offer Standard PCB, Advanced PCB, Rigid-Flex PCB, SMD-Stencil and PCB Assembly Service. Here you get, 100x100mm 2 Layer PCB only at $5, And processing time within 24 hours. And they distribute, worldwide. The more you order, the less price you have to pay.

You just need to upload the Gerber File, and select the quantity, color, silkscreen, thickness etc. Then select your country, and shipping method and then Pay. will deliver your PCB within 7-10 days.

PCB Layout & Schematic:-

License:- ©Technical Mriganka. You can't use this PCB Layout and Gerber File for commercial purpose. You can use this PCB layout and Gerber file only for Educational and DIY projects.

Series light test:- After complete this board don't forget to series light test. When you will on this amplifier via series light, it glow for some time (1 - 2 sec). Then series light will turned off fully. If the series light will fully turned off, then check the voltages.

Power Supply:- Use 24-0-24V 5A Transformer.

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