What's the best single-control tone stack you've seen?

[Gaz]

Nah, not enough components to be the Gretsch. Any geniuses wanna take a stab at it?

Imperial

[Gingertube]

Tone Control on the Output Tube.

For a Single Ended Amp you could try this one.
Treble Cut and Boost via feedback around the output tube.
Cheers,
Ian

[Daver]

FWIW the Supro Thunderbolt used a version of the tilt tone control.
Dave

[HBamps]

TYry the Dr Z single knob tone control, works very well.
[ATTACH=CONFIG]18551[/ATTACH]

this does work well. it's like a mid control, paired with a CUT control on the output, it's very cool.

[benito_red]

I've been searchig for long a good and simple tone control. I do not like at all the tweed style single tone ctrl because it is too interactive with volume.
At the end I found this:

I use it on a SE 6V6 amp, the tone control is a CUT control type (like AC30 or DrZ) , and IMO it is a very good solution. It can be seen as a semplification of Dr Z
If you try it, pls let me know you opinion good or bad
regards
benito

[benito_red]

I've been searchig for long a good and simple tone control. I do not like at all the tweed style single tone ctrl because it is too interactive with volume.
At the end I found this:

I use it on a SE 6V6 amp, the tone control is a CUT control type (like AC30 or DrZ) , and IMO it is a very good solution. It can be seen as a semplification of Dr Z
If you try it, pls let me know you opinion good or bad
regards
benito

[Gaz]

I've been searchig for long a good and simple tone control. I do not like at all the tweed style single tone ctrl because it is too interactive with volume.
At the end I found this:
[ATTACH=CONFIG]19190[/ATTACH]
I use it on a SE 6V6 amp, the tone control is a CUT control type (like AC30 or DrZ) , and IMO it is a very good solution. It can be seen as a semplification of Dr Z
If you try it, pls let me know you opinion good or bad
regards
benito

Cool, I'd like to see both simulated to see how close the response really is.

[jpfamps]

The Magnatone 431/ Estet T-32 is quite a cool single knob tone control using variable cathode feedback.

Prowess Amplifiers - Magnatone - Schematics - Magnatone Estey T-32 - reverb tremelo and vibrato amp

I like the aesthetic of a single tone control, and have experimented with the Big Muff Pi-style tilt control, figuring that it would be useful to simultaneously cut bass/ "boost" treble with say a Les Paul, and vice versa say with a Tele.

The results I got where OK, however the useful range of the tilt control as I implemented it seemed to be between 12 and 3 o'clock.

I quickly adopted the Vox-style (although this circuit actually was used first by Gibson) treble and bass controls which actually used less components than the tilt control and offered better tone control, which is of course not a particularly helpful conclusion in a thread on single knob tone controls........

I suppose I could have persisted with the BMP tilt control, and would be interested to here of others experiences with this circuit.

[echuta13]

I tried the Magnatone tone control in a 5F2a type circuit and it worked quite well. Was pretty happy with the stock values, but I need to monkey with it more when I have the time. Would recommend it!

[jpfamps]

Sorry to revive another antique thread, but I then remembered the Selemr MkI Little Giant tone controls.

Selmer Little Giant Mk1 Schematic

[EFK]

That sure is one interesting schematic! I'd like to hear one of those.

[pdf64]

That design is really unusual to say the least, thanks for bringing it up.
The first grid seems to get its ground reference via the OT secondary, or have I muddled it up?
Plus there's another feedback path from the OT secondary, via the volume control, to the power tube control grid.
It's worth knocking one together just to see how it operates.
Pete

[jazbo8]

Unusual configuration, the tone control is pretty much the same as the one used in Dr. Z Route 66 posted above (which could very well be inspired by this one), just with the outputs connected differently - this one provides a mid-boost, whereas Dr. Z's provides a mid-scoop.

Jaz

[jpfamps]

That sure is one interesting schematic! I'd like to hear one of those.

The Little Giant has a pretty shandy speaker and probably kicks out 3W with the wind behind it, so I can't really comment on the efficacy of the tone control, as the sound of the amp is very much determined by the output stage/ speaker.

Would be good to experiment with this in an amp with a more output power.

There are rumours (on that most reliable of sources, the internet.......) that the Fender Pawnshop Greta is based in the Little Giant.

As an aside, in my view 50's and early 60's design are a rich source of interesting ideas, and in many ways more "innovative" than later designs.

[loudthud]

I ran across an article over a year ago in EDN magazine. It's like the Baxandall in that it uses feedback around an op amp. Possibly could be used in addition to normal bass and treble controls with the same opamp. Just add the pot, four resistors and two caps. The full article is titled "Implement an audio-frequency tilt-equalizer filter". Lots of math and no easy shortcut equasions. To get it you'll have to go to edn.com and join their forum. I joined and then forgot my user name and password. Oh well, at least I printed a copy