Tisbury Audio Mini Passive Pre-amp

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Originally Posted by Firebottle

You're talking bollocks. Yeah :yay: I've always wanted to say that :rofl:

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Hehehehe... Thought I'd give you the opportunity! :D

As for the rest of the above, I'm afraid that it flies right over my big daft dome........

Marco.

OK you big daft nut. As you are keen to learn.

For a linear law pot, turn it 20% round and the tapping point (the output) will be at 20%. Turn it 50% and the output will be 50% etc.
These type of pots are used for bass and treble controls as an example.

For control of volume the increase in output needs to be quite small at the beginning but becoming a lot greater towards the top end, because the ear has a logarithmic response to sound level:

http://www.learnabout-electronics.or...log_action.gif

This is so that we can achieve sensible apparent changes to sound level over the full travel of the pot.

:D

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Originally Posted by Marco

How would the gain be affected, Dave? I've always wondered how the 'K' value of pots or attenuators affects the gain on the amp they're connected to :)

Is 10K 'higher gain' than 50K, or if not, how does it work?

Marco.

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Sorry chaps, I got it all wrong :( I must admit I have compared 10k pots to 47k ones and couldn't hear differences, for reasons now carefully explained to me. It was not my intention to mislead or cause more confusion and I'd best not try to say more in case I impart more incorrect advice.