Search found 200 matches

by Chugs
09 Mar 2020, 19:55
Forum: Modern Stompbox Effects (1975 - ...)
Topic: KOD DS-04 Distortion [schematic]
Replies: 2
Views: 2498

Re: KOD DS-04 traced [schematic]

Is the output resistor possibly 470R instead of 470K?
by Chugs
23 Dec 2019, 13:35
Forum: DIY Projects
Topic: BAJA Kiwi Merry Christmas Wah Wah pedal 221219 [documentation]
Replies: 14
Views: 4490

Re: BAJA Kiwi Merry Christmas Wah Wah pedal 221219 [documentation]

Loads of variation!

Any suggestion for a value for C3 to approximate the Q of a 33k resistor in parallel with an inductor?
by Chugs
22 Dec 2019, 09:59
Forum: DIY Projects
Topic: BAJA Kiwi Merry Christmas Wah Wah pedal 221219 [documentation]
Replies: 14
Views: 4490

Re: BAJA Kiwi Merry Christmas Wah Wah pedal 221219 [documentation]

Nice, I like that it is buffered bypass as you could easily retrofit it into an existing wah enclosure and use the SPDT footswitch that most have.

Is the Q response constant or does it vary with the sweep like an inductor wah?
by Chugs
18 Oct 2019, 21:45
Forum: Boutique Stompboxes dissected...
Topic: Xotic - Soul Driven [traced]
Replies: 11
Views: 6495

Re: Xotic - Soul Driven [traced]

Interesting, sort of like a Zen Drive-ish front end with Bass boost section is taken from the Boss BD-2 followed by a transistor output buffer.

Topology/values for the bass boost section match the BD2 but with switchable boost. Same diode protection and preceding volume control.
by Chugs
04 Nov 2018, 22:12
Forum: Modern Stompbox Effects (1975 - ...)
Topic: TC Electronic - MojoMojo
Replies: 32
Views: 12317

Re: TC MojoMojo

My guess is same topology as TC Dark Matter with different components values. Schematic for the Dark Matter: https://www.freestompboxes.org/viewtopic ... er#p270842
by Chugs
13 Mar 2018, 19:07
Forum: Boutique Stompboxes dissected...
Topic: Keeley - Germanium Amplifier [traced]
Replies: 9
Views: 5387

Re: Keeley Germanium Amplifier [traced]

Temperature stability will be an issue.
by Chugs
24 Feb 2018, 13:58
Forum: Modern Stompbox Effects (1975 - ...)
Topic: TC Electronic - MojoMojo
Replies: 32
Views: 12317

Re: TC MojoMojo

Dark Matter Schematic is here. Possibly uses the same board as the Mojo Mojo with different values and/or a few different parts. There are unused parts places on the Dark Matter boards.

https://www.freestompboxes.org/viewtopic ... er#p260813
by Chugs
24 Feb 2018, 08:43
Forum: Modern Stompbox Effects (1975 - ...)
Topic: TC Electronic - MojoMojo
Replies: 32
Views: 12317

Re: TC MojoMojo

Possibly similar topology to the Dark Matter but with different values?
by Chugs
13 Jan 2018, 09:40
Forum: DIY Projects
Topic: BAJA Highway 1 [documentation]
Replies: 17
Views: 8630

Re: BAJA Highway 1 [documentation]

Nice project!

Interesting looking tone control. What is the 22n cap in parallel with the 3.3K resistor doing? What is there frequency response of the Bass and Treble controls?
by Chugs
16 Nov 2017, 08:34
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Joyo - JF-02-B Ultimate Drive v2 [schematic]
Replies: 18
Views: 10245

Re: Joyo Ultimate Drive v2 schematics [schematic]

Presumably, C4 is meant to be 0.068uf?
by Chugs
29 Sep 2017, 08:59
Forum: DIY Projects
Topic: Baja Trembulator schematic, board layout and circuit board [documentation]
Replies: 166
Views: 53586

Re: Baja Trembulator schematic, board layout and circuit boa [documentation]

I presume the 100K resistor to ground before the Depth controls is redundant when used with the added output buffer version?

Presumably it was acting as a pulldown resistor on the output in the original version.
by Chugs
27 Sep 2017, 21:18
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Caline CP-16 Mark 4 [schematic]
Replies: 17
Views: 16288

Re: Caline Mark 4 [schematic]

Here you go...
by Chugs
27 Sep 2017, 20:45
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Caline CP-16 Mark 4 [schematic]
Replies: 17
Views: 16288

Re: Caline Mark 4 [schematic]

Look at the MI Audio Tubezone for some tone control ideas.

The topology of the Caline appears to be a simplified version of the Tubezone.
by Chugs
11 Oct 2016, 07:51
Forum: Modern Stompbox Effects (1975 - ...)
Topic: TC Electronics - Dark Matter [schematic]
Replies: 60
Views: 73315

Re: TC Electronics - Dark Matter [schematic]

Thanks.

Are the parts with a cross through them not fitted on the circuit board?
by Chugs
03 Jul 2016, 06:56
Forum: Boutique Stompboxes dissected...
Topic: Bogner - La Grange [traced]
Replies: 169
Views: 83545

Re: Bogner La Grange [traced]

Nice work. Is there parts values for the schematic?
by Chugs
03 Jul 2016, 06:54
Forum: Boutique Stompboxes dissected...
Topic: Ramble FX - Marvel Drive 1.0 [traced]
Replies: 90
Views: 61896

Re: Ramble FX - Marvel Drive 1.0 [traced]

it would be nice to see the correct values and changes for th V2.1 version. :horsey:
by Chugs
03 Jun 2016, 06:58
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Lehle Parallel, schhematic [schematic]
Replies: 5
Views: 8220

Re: Lehle Parallel, schhematic [schematic]

Why is the Vbias so crazy asymmetrical? :scratch:

Could they have not just reference the Bias resistors to ground as they have a + and - power supply for the pampas?
by Chugs
03 May 2016, 06:43
Forum: Boutique Stompboxes dissected...
Topic: Fire Power Booster - schematic inside
Replies: 17
Views: 8761

Re: Fire Power Booster - schematic inside

Anyone have the schematic for this? Links no longer work.
by Chugs
14 Dec 2015, 08:11
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Ibanez - JD-9 Jet Driver [schematic]
Replies: 36
Views: 34042

Re: Ibanez - JD-9 Jet Driver [schematic]

The Mid control is a gyrator.

You can use this calculator to figure out how to change the response.

http://www.muzique.com/lab/gyrator.htm