Audio VS. Linear

[ScottB]

Oh heck, yes now I see. You still have a "knee" but your log taper is smother overall.

Still a different animal from me trying to do a log taper from a straight linear. But the discussion has been invigorasting, thank you for your patience.

[FF_Pedals]

I think you would need some kind of an impedance transformer and it's just not practical. The only answer is buying the right pot.

[ScottB]

That's my current thought; I could do it, even simply with passives, but then I rob signal from the coil without going active pickups. Which defeats the purpose.

However I am very much in the realm of going 1M linear pots with 200k shunts and give up the indy circuit for shared wiring. The neck stays turned up generally anyway.

[FF_Pedals]

Good luck man! I've gotta get some work done...

[korus]

Just try higher resistor e.g 220k instead of 33k AND at the same time invert connections on lug 2 and 3. I know it is making dependent instead of independent wiring but please try it that way, but check the taper of the pot this way. I know that on paper it should not make any difference, but try it.

[ScottB]

I think it will make a huge difference. By doing it that way you take the coil impedence out of the volume equation. That is my falback because i know I should get a true log taper if I go with shared wiring.

Now the question is, is the tone pot given a reverse log taper based on the total impedence of the volume control and coil? It can't be much, but is it noticeable?

[korus]

for the purpose of testing taper change you can disconnect tone pot (RC network) for a while, then reconnect later. I do not think that pickup's impedance has any significant effect on the taper be it 5k or 20k. Value of the pot and value of the resistor does.

[jonesy]

I normally use a .0022 Cap and 100K resistor for my volume bleed kits, but I also use .001 cap and 80k resistor for slightly different taper.

[FF_Pedals]

Originally Posted by jonesy

I normally use a .0022 Cap and 100K resistor for my volume bleed kits, but I also use .001 cap and 80k resistor for slightly different taper.

Ah, now I understand why people use those!

[korus]

Originally Posted by jonesy

I normally use a .0022 Cap and 100K resistor for my volume bleed kits, but I also use .001 cap and 80k resistor for slightly different taper.

If the resistor in treble bleed kit alters the pot's taper, then your kits are cap and res in parallel. I use custom taper pots for volumes so I use treble bleeds of cap and res in series. By doing that way, resistor does not alter the taper.

[jonesy]

Originally Posted by korus

If the resistor in treble bleed kit alters the pot's taper, then your kits are cap and res in parallel. I use custom taper pots for volumes so I use treble bleeds of cap and res in series. By doing that way, resistor does not alter the taper.

Yes I use them in parallel and the resistor keeps the treble even at the bottom of the taper so the treble does not spike at the bottom of the curve. The .0022/100K is Seymour Duncans favorite formula for a volume bleed kit

[FF_Pedals]

Interesting, I think this is the patent on the taper: United States Patent: 4435691)

[KP Willits]

Originally Posted by FF_Pedals

Sounds intriguing. What kind of guitar is it in? What kind of pickups?

Epi LP with Rockfield SWV pups. I love a sweet mellow sound.