Search found 1866 matches

by 10thTx
Wed Jul 13, 2022 9:57 am
Forum: Dumble Discussion
Topic: Before I Fire It Up... (Fender PA100 Conversion)
Replies: 26
Views: 2638

Re: Before I Fire It Up... (Fender PA100 Conversion)

Remarkably well done! Thanks for sharing.

With respect, 10thtx
by 10thTx
Fri Jul 08, 2022 12:57 am
Forum: Technical Discussion
Topic: Running an amp on one tube
Replies: 10
Views: 757

Re: Running an amp on one tube

Perhaps this would be reasonable to consider as a "half of a PPIMV" ?

With respect, 10thtx
by 10thTx
Fri Jul 08, 2022 12:25 am
Forum: Technical Discussion
Topic: Running an amp on one tube
Replies: 10
Views: 757

Re: Running an amp on one tube

London Power "The Ultimate Tone" books have a design called a Soma 84. I cannot remember which book? It uses a concept with a concertina PI to simulate a PP to SE idea.

With respect, 10thx
by 10thTx
Wed Jul 06, 2022 9:49 am
Forum: Dumble Discussion
Topic: Half Dumblator
Replies: 29
Views: 2987

Re: Half Dumblator

Just to echo that there are many different variations of tube FX loops:

https://el34world.com/Forum/index.php?topic=10208.0

With respect, 10thtx
by 10thTx
Thu May 19, 2022 10:38 am
Forum: Technical Discussion
Topic: dumble with Fender tone stack
Replies: 14
Views: 1612

Re: dumble with Fender tone stack

I've tried a handful of different tone stack approaches in an overdrive topology. I have found the James tone stack to be the best to my liking. It allows a "faux" mid boost or a mid scooped option. See Duncan Tone Stack calculator for an example: http://www.duncanamps.com/tsc/ With respect, 10thtx
by 10thTx
Wed May 18, 2022 8:34 pm
Forum: Technical Discussion
Topic: dumble with Fender tone stack
Replies: 14
Views: 1612

Re: dumble with Fender tone stack

Now I think one could consider this but it would involve another dual triode? Then ......... you could use one DPDT and the other tone stack still connected to ground would not matter. And since the tone stacks have NO shared connection to a V1a triode, then it would not be problematic in my thinkin...
by 10thTx
Wed May 18, 2022 7:48 pm
Forum: Technical Discussion
Topic: dumble with Fender tone stack
Replies: 14
Views: 1612

Re: dumble with Fender tone stack

One single DPDT relay: - plate to EQ1 or EQ2 (with a 2M2 resistor to keep the caps at the average plate voltage and avoid pops); - Vol1 or Vol2 to second stage's grid (with a 1M resistor to keep the grid at ground potential and avoid pops). Can you please post a schematic of what you are referring ...
by 10thTx
Wed May 18, 2022 12:43 pm
Forum: Technical Discussion
Topic: dumble with Fender tone stack
Replies: 14
Views: 1612

Re: dumble with Fender tone stack

I'll offer a thought for consideration. This may or may not be worth trying in regards to getting you closer to the Fender clean tone? This could be considered a Fender clean/ Dumble clean tone stack hybrid. Not capturing the best of either but offering a possible compromise that might be useful? 15...
by 10thTx
Wed May 18, 2022 12:23 pm
Forum: Technical Discussion
Topic: dumble with Fender tone stack
Replies: 14
Views: 1612

Re: dumble with Fender tone stack

I prefer the clean sound of the scooped fender. There are other factors involved getting that scooped Fender tone besides the tone stack such as 100k plate resistors, 3 gain stages (AB763), and 22uf cathode caps. The tone stack alone is not going to create a Fender tone. I think using two parallel ...
by 10thTx
Thu May 05, 2022 10:05 am
Forum: Dumble Discussion
Topic: JM channel in a Twin Reverb.
Replies: 8
Views: 1516

Re: JM channel in a Twin Reverb.

I would encourage you to post a schematic for what you are wanting to attempt. I've attached some editable FREE program SCH schematics that you could use if you wish to. You should not view the attached schematics are totally correct but as a starting place for you to draw up your own schematic. The...
by 10thTx
Thu Apr 21, 2022 10:04 am
Forum: Dumble Discussion
Topic: Looking for 102 w reverb layout?
Replies: 23
Views: 3946

Re: Looking for 102 w reverb layout?

Didn't hear it. It has overdrive in it already. Look at the other layouts and schematics to see how to make it switchable.

10thtx
by 10thTx
Wed Apr 20, 2022 10:18 am
Forum: Technical Discussion
Topic: 5U4GA loose base
Replies: 7
Views: 532

Re: 5U4GA loose base

Throw it away.
by 10thTx
Fri Apr 15, 2022 10:12 am
Forum: Dumble Discussion
Topic: OD/gain pedal for ODS clone?
Replies: 23
Views: 5031

Re: OD/gain pedal for ODS clone?

Might try a Timmy pedal or build a clone of one.

https://tagboardeffects.blogspot.com/20 ... timmy.html
https://guitarpcb.com/product/t-drive-timmy/

With respect, 10thtx
by 10thTx
Sun Apr 10, 2022 9:37 am
Forum: Speakers and Cabinets
Topic: Difference between - Neo Creamback and Neo V-Type
Replies: 10
Views: 15840

Re: Difference between - Neo Creamback and Neo V-Type

Is it possible to make a new baffle and move the speaker out of the way.

With respect, 10thtx