I'm building a headphone amp based on the simple CMoy design.
I want to add a variable gain and the design shows adding a dual gang pot on the inputs as a potential divider.
The design notes say to use an 'audio taper' type potentiometer.
This isn't a phrase that I've come across in the UK - I assume they mean use a Logarithmic type.
Am I correct?
Thanks for the help,
Nigel
"Nigel Heather
And what's that ?
That's how they work.
Yes, but the term audio taper is probably more correct actually. But log is quicker to say.
Graham
basically, except they don't make logaryrthmic potentiometers, only semi-logarythmic ones... AKA audio taper.
If they were logarythmic all the way there'd be no way to turn the sound off because if the amplitude halves every -n degrees of rotation how far would you need to turn the pot to go from full amplitude to silence)
Bye. Jasen
"Nigel Heather
It is one type of Logarithmic pot. At one time there were quite a few, including some reverse Logarithmic pots. Most of them are now obsolete or special order.
Just a simple question that's all.
As far as I can tell, the term 'Audio Taper' is not used at all in the UK. If you visit a UK electronics retailer (Mpalin, RS, Farnell) you can buy a Linear (Lin) or a Logarithmic (Log) - no mention of 'Audio Taper'.
All I was asking was whether the Logarithmic Pot that you can buy in the UK is the same as an 'Audio Taper' that you would buy in the States.
It seems the answer is 'Yes'.
Cheers,
Nigel
"Nigel Heather
Look at the manufacturer's data sheet though !
It is.
Graham
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