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Suitable volume control

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beaty40

New Member
Hi,

I have built a small amplifier, 18 watt BTL, based on the HA13118 chip from a kit.

I added a volume control using a 10k pot and a 1k resistor. However turning the pot a small amout gives me almost full volume. What values should I use to give me a more usable range?

Beaty40
 

beaty40

New Member
Hi,

Thanks for that.

My knowledge is limited[very]; what does 'taper' refer too? Is this the same as 'log'? Most of the pots in my catalogue [UK] seem to be of the linear type.

Beaty
 

Mosfet

New Member
beaty40 said:
what does 'taper' refer too? Is this the same as 'log'
Yes, you are correct.
Audio taper (or log) give 15 percent resistance at the 50 percent rotation point.
Linear taper give 50 percent resistance at the 50 percent point.
So audio taper pots give more volume adjustment at the lower levels.
 

beaty40

New Member
Hi,

Again, many thanks. Terms often vary from one country to another. My guess was that you meant the log version. I will try it.

Regards,

Beaty
 
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