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DIY TDA7294 100W Subwoofer Amplifier Board Kit
Description:
This circuit can be according to your preferences and existing speaker cabinet to adjust the bass frequencies and output frequency, just replace the circuit C5 * of capacity, you can change the output frequency, capacitance from 103, 223, 323, 473, 683, 104 range selection, which frequency is right for you to choose which need full-range output, remove C5 * like.
(Note: If you prefer a lower number of frequencies, it can be replaced C4 original 224 474, R10 to replace the original 22K 47K, as long as your subwoofer can withstand such frequency, or because the speaker can not afford low-impact there will be primed to break the sound !!!)
Feature:
Power supply transformer range: AC Dual 11V ~ 25V
Dual power supply DC power supply range: ± within 35V. ( Note: The use of DC power supply V +, GND, V-, three lines of output power.)
Power smallest less than 50W, the greater the input of electrical power, the output power amplifier more feet, equipped with the corresponding need larger heat sinks
Note:
When connecting dual power transformer input, please do note that the correct access to the t