Product Information
- The high-power ground rigid bubble power amplifier board is finished. The circuit uses the new original TDA7294 for power amplification. The maximum output power can reach 100W. The low-pass circuit uses a dual op amp NE5532. The PCB layout is reasonable, no noise, and cost-effective.
- This power amplifier board circuit works stably, has strong anti-interference, higher signal-to-noise ratio, and a higher sense of hearing: the bass is strong, full, freely retractable, strong, strong, with deep dive, very HI.
- With UPC1237 speaker protection circuit, with radiator, it works immediately when connected to the power supply, DIY is very convenient!
- You can adjust the output frequency of the bass according to your personal preferences. As long as you change the size of C20 in the circuit, you can change the output frequency. The capacitance is selected from the range of 103, 223, 323, 473, 683, 104, and 224. Which one you choose requires full-frequency output, just remove C20.
- If you prefer a lower frequency, you can replace the C19 from the original 224 to 474, and the R14 and R15 from the original 10K to 22K or higher, as long as your woofer has a wide frequency response range, otherwise the speaker frequency Loud sound will appear to varying degrees! In short, adjusting C19, C20 or R14, R15 can change the cut-off frequency. Please adjust it according to personal preference. We have adjusted the general frequency range 50-150Hz when we leave the factory.
