Search found 25 matches

by freefrog
27 Mar 2024, 12:06
Forum: Pimp-My-Cheap-Pedal
Topic: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...
Replies: 24
Views: 20672

Re: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...

Frequency response of the "new" tone control pictured in the attached file... Pot @ 0, full up or in between. Vertical steps of 5dB. FWIW.
TC TP new tone control Fr Resp.jpg
by freefrog
27 Mar 2024, 06:42
Forum: Pimp-My-Cheap-Pedal
Topic: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...
Replies: 24
Views: 20672

Re: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...

To other contributors: thx for sharing. Having a boatload of other drive pedals (including other tube circuits, home made or not), I did not need to change the gain structure of the TC Tube Pilot. So, I've just refined my initial idea of tone control for it. The one shown in the attached file (5spic...
by freefrog
03 Sep 2023, 17:09
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Joyo - JF-13 AC Tone [schematic]
Replies: 78
Views: 122459

Re: Joyo - JF-13 AC Tone [schematic]

A delayed echo to the cab sim bypass mod evoked above, since I've done it on an American Sound a few minutes ago... I've took the direct signal from the top of R33 and not from its bottom going to C14/R25. No need of 3,3k added resistor in this case IME: levels are similar with or without cab sim. B...
by freefrog
10 Jul 2023, 09:14
Forum: Boutique Stompboxes dissected...
Topic: Crowther Audio - Hot Cake Overdrive [traced]
Replies: 323
Views: 168562

Re: Crowther Audio - Hot Cake Overdrive [traced]

As the XLF mode in a Hot Cake clone didn't get much use here, I've modded it... Without XLF, the coupling cap before the volume pot is now a 10nF. Cuts frequencies under 300hz. Makes the pedal tighter and therefore more versatile IME/IMHO. YMMV. Have put a 150nF in series with a 47nF (=35.78nF in th...
by freefrog
23 May 2023, 07:53
Forum: Pimp-My-Cheap-Pedal
Topic: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...
Replies: 24
Views: 20672

Re: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...

Welcome young tinkerer and thx to share (from an old fart 43 years older than you). :-P

Glad if you're pleased with your mods, like mine fulfil my needs. Nothing else matters. Enjoy!
by freefrog
03 Mar 2023, 21:33
Forum: DIY Projects
Topic: DIAZ TEXAS RANGER question
Replies: 7
Views: 865

Re: DIAZ TEXAS RANGER question

the main reason that comes to mind is i tried it through a clean amp....anyways... big thanks one more time! You're welcome... and I agree with the reason evoked. :-) IMHO, a circuit like the Diaz Texas Ranger can give really good results in a drive channel, before drive pedals or at least in a pus...
by freefrog
03 Mar 2023, 20:23
Forum: DIY Projects
Topic: DIAZ TEXAS RANGER question
Replies: 7
Views: 865

Re: DIAZ TEXAS RANGER question

Hello, Yes, "Treble Boosters" based on the Rangemaster recipe are actually high mids boosters and don't distort by themselves: they just... boost. Why are they high mids boosters ? It would be long to explain correctly and in details but to sum it up simplistically, it's due to how passive...
by freefrog
23 Feb 2023, 07:46
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Colorsound - Power Boost / Overdriver
Replies: 188
Views: 150096

Re: Colorsound - Power Boost / Overdriver

A side note about clones... I've bought one to a relatively famous vendor. Neither the schematic nor the bill of materials mentioned the 100nF cap going across the bass pot. The circuit works without this cap but it makes the bass pot necessarily not selective enough... So, let's share a corrected v...
by freefrog
22 Feb 2023, 11:16
Forum: Pimp-My-Cheap-Pedal
Topic: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...
Replies: 24
Views: 20672

Re: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...

And here is the frequency response produced by one of my modified TP (the model with a 47nF cap) once the tone control @ 1/4, 1/3, noon and full up...

Image
by freefrog
22 Feb 2023, 08:36
Forum: Pimp-My-Cheap-Pedal
Topic: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...
Replies: 24
Views: 20672

Re: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...

Ain't got the time to trace the schematic of the unit. Anyway, there's a lot of SMD components in it and my eyes are getting old. But I've added a tone control to both of my TP's. I've first tried a tone stack like in the Butler Tube Driver. Nice but (as expected) there was too much insertion loss. ...
by freefrog
15 Oct 2022, 07:16
Forum: Electric Guitar/Bass Wiring
Topic: Varitone switch part number
Replies: 13
Views: 3446

Re: Varitone switch part number

i have tried a 1.5H part Xicon ; 42TL021-RC https://www.mouser.com/ProductDetail/Xicon/42TL021-RC?qs=%252BLh6ltJumVT3Qy3R%2Fg2Kgg%3D%3D&countryCode=CA&currencyCode=CAD And you can hear the high frequency coming back, most prominent when the high value cap are switched in. With the 1nF , the...
by freefrog
15 Oct 2022, 07:00
Forum: Electric Guitar/Bass Wiring
Topic: Varitone switch part number
Replies: 13
Views: 3446

Re: Varitone switch part number

What value for the choke, would you say, ticks all the right boxes in a VariTone circuit ? Not an easy question for an old geek like me :-P... It depends on the guitar & pickups involved, IMHO & IME. And even on the harness. Gibson did mount 15H chokes in guitars and 30H in bass, AFAIK... T...
by freefrog
13 Oct 2022, 04:40
Forum: Electric Guitar/Bass Wiring
Topic: Varitone switch part number
Replies: 13
Views: 3446

Re: Varitone switch part number

thanks Guys, i did my tests with this circuit. I had a 1.5H inductor. This inductor is keeping the highs with the capacitor in the circuit. With a 1.5H inductor, the circuit is lowering the output level and increasing the high range, exactly like with two pickups in parallel. Reason why the 2d and ...
by freefrog
12 Oct 2022, 08:59
Forum: Electric Guitar/Bass Wiring
Topic: Varitone switch part number
Replies: 13
Views: 3446

Re: Varitone switch part number

Attached is the schematic of the Gibson Bueshawk, it uses a 7.2 Henry choke. Gibson Blueshawk factory schematic and wiring diagram (20 May 1996).pdf Yes and Stellartone was even selling 15H chokes as being the real deal a few years ago... Here is a post from a fellow member on MLP about that: https...
by freefrog
12 Oct 2022, 05:05
Forum: Electric Guitar/Bass Wiring
Topic: Varitone switch part number
Replies: 13
Views: 3446

Re: Varitone switch part number

The Gibson schematics work. Simplifying them might give a different behaviour to the VariTone circuit. Proper rotary switches can normally be found in various web shops - Stew Mac, WDmusic, Thomann... At least that's where I've bought such parts in the past. Capacitors: some vintage Gibson included ...
by freefrog
25 Sep 2022, 13:13
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Hiwatt Tube Distortion - gutshots & schematic [schematic]
Replies: 3
Views: 8225

Re: Hiwatt Tube Distortion - gutshots & schematic [schematic]

Feeding this tube heater with such extreme voltage only conduct to shorten their life expectancy and does nothing to the resulting sound. Cut a track on the tube board and place a 39 ohms 2watt resistor in series with the pin 5. This suggestion is also valid to the overdrive pedal you have. Try to ...
by freefrog
10 Aug 2022, 16:54
Forum: Electric Guitar/Bass Wiring
Topic: Tone control based on Guild T-Bird
Replies: 5
Views: 2331

Re: Tone control based on Guild T-Bird

Yep, there's many interesting things to do with tone caps. One can even put them in an external case like Fralin did. LOL. Here is an example where he uses this experimental device to demonstrates how a 2,2nF (and not the usual 22nF) tone cap sounds with a Telecaster: https://youtu.be/8t_eqST1pWQ?t=...
by freefrog
10 Aug 2022, 05:28
Forum: Electric Guitar/Bass Wiring
Topic: Tone control based on Guild T-Bird
Replies: 5
Views: 2331

Re: Tone control based on Guild T-Bird

Thx for sharing! In my main Strat I've a TBX pot with a grease bucket tone on the 250k side, while the 1M side hosts a dual circuit: @ 10/10, it puts in parallel of the pickups a personalized Q filter, hosting a choke of several Henries in series with a resistor. It decreases the measured DCR & ...
by freefrog
05 Aug 2022, 10:16
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Biyang - CH-8 Analog Chorus [schematic]
Replies: 31
Views: 15410

Re: Biyang - CH-8 Analog Chorus [schematic]

I've tweaked one of these. The 4.5v DC line was providing 4.72v and there was no bias pot: the 10k trimmer between two 4.7k resistors usually found in CE2's is absent. There is just two 10k resistors instead. They are those named "R1" and "R2" close to the DC barrel. The DC line ...
by freefrog
22 Feb 2022, 16:24
Forum: Pimp-My-Cheap-Pedal
Topic: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...
Replies: 24
Views: 20672

Re: "Cheap trick" to smooth the tone of a TC electronic Tube Pilot...

Evadllew wrote: 21 Feb 2022, 22:05 I had better mention that i have been using the 9V/500mA output of my supply but with everything else plugged in it might not be up to it?
Just a thought.
The only way to know would be to try the pedal with a different power supply... and/or without any other FX from guitar to amp.