Question about Pyramid PR530A 2 Channels Receiver

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Master volume control knob

The knob does not have a stop but keeps turning after it gets to "no sound".Same for maximum sound. Is this normal? If not, is there an easy way to fix it?


John P.

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Re: Master volume control knob

Wow, it is nice to see rotary controllers becoming more available on the markets these days. I hope that they can get the kinks worked out a little better. That is going to be really important in the long run.

Posted on Feb 11, 2014

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Re: Master volume control knob

Yes it uses a digital attenuator and the vol control is a rotary encoder only.

Posted on Dec 08, 2007

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Without going through logarithim theorey, the logarithim (base 10) of 1 is 0. So if 1 is the maximum output of the amp, as you turn the knob down from maximum you are adding more and more attentuation to the output (relative to maximum) and so the loudness of what you hear goes down, even though the number on the scale is going up !

Most peolpe associate decibels with sound levels, but anything can be measured in decibels, so long as there is soemthing to reference it against.

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Note the position of your volume control when the clipping occurs, then remove one speaker at a time and raise the volume. If you identify a speaker as the culprit, inspect or replace the wire running to it and try it again. If you aren't able to find a bad speaker, the problem is internal and will need to be fixed at a repair shop.

Good Luck,

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Please rate response!!

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