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Sub Woofer Amplifier kit (48W OCL)
Overview
This sub woofer kit amplifies 25 to 200Hz frequency range!
Great for subwoofer experimentation.
With an input sensitivity of 1 Vrms with an impedance of 100 Kohms, and an output power of 48W RMS class AB in 4 or 8 Ohm load.
The input signal is buffered using a small pre-amplifier stage. The left and right inputs are combined to create one mono source.
The second op amp in IC1 is used to create a low pass filter which feeds the final stage of amplification to obtain a 48 watt output.
Requires a power supply capable of delivering 2 amps plus and minus 25 to 35 volts DC. Power supply is not included.
PCB dimensions : 4.6 X 2.5
Here is the transformer you will need: 640-483
And the Symmetrical DC Power Supply Kit you will need: QK186
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