It seems that the preferred method for varying the volume of amps is to attenuate the incoming signal. Is it also acceptable
to vary the gain of the chip amp using a pot as one of the gain set resistors? Is this really only applicable to chip amps since there is essentially only one gain stage? Any theories/ experimental data on whether or not this method is better or worse?
Thanks,
Mike
to vary the gain of the chip amp using a pot as one of the gain set resistors? Is this really only applicable to chip amps since there is essentially only one gain stage? Any theories/ experimental data on whether or not this method is better or worse?
Thanks,
Mike
The Hi-Fi police will charge you with contemt for the importance of feedback-resistor quality.
And I'm sure they also will come up with more...
Arne K
And I'm sure they also will come up with more...
Arne K
First: Correct me if I’m wrong, but I red somewhere that the optimum gain for Power amp is between 22 and 30 (or something like that, 30dB).
Second: How can you get it down to mute if you use the feedback resistor as a volume control? The lowest it’ll go is gain of 1.
Second: How can you get it down to mute if you use the feedback resistor as a volume control? The lowest it’ll go is gain of 1.
I asked this exact question once, got some various answers. I thought it would be good, because the input impedence would always be the same, and at low volumes you would be lowering the gain, thus overall distortion.
Anyways have a read
My original thread
Anyways have a read
My original thread
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