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2.1 Stereo speakers

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rbenq

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How the bass sound of the two channels are combined into a single subwoofer? Does anybody has a circuit diagram?

Thanks in advance, Ben.
 
rbenq said:
How the bass sound of the two channels are combined into a single subwoofer? Does anybody has a circuit diagram?

With a mixer! - two resistors as a minimum. The subwoofer amplifier should have a low-pass filter to accept only the low frequencies.
 
Wow, two resistors. That seems to be very easy. But, with the two resistor mixer and low-pass filter will Istill have the original two channels with high frequency to put in small speakers?
 
The original two channels aren't affected when you add a two-resistors mixer with a lowpass filter to the stereo signal source. They really should have a highpass filter to keep subwoofer frequencies out of them.
 
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