Search found 155 matches

by temol
09 Jan 2020, 11:04
Forum: Ready-To-Build Effect Projects
Topic: BAJA SLO MkII overdive pedal project 040218 [verified]
Replies: 28
Views: 4235

Re: BAJA SLO MkII overdive pedal project 040218 [verified]

Any plans for a new overdrive pedals? How about Mesa Boogie Mk 2 or Mk4? :)

T.
by temol
28 Sep 2019, 06:32
Forum: Ready-To-Build Effect Projects
Topic: BAJA Orange AD200B MkII bass amplifier in a 9v pedal 270318 [verified]
Replies: 24
Views: 2565

Re: BAJA Orange AD200B MkII bass amplifier in a 9v pedal 270 [verified]

You can take any power amp project you like. From 0.5W to 100W.. transistors, tubes. It's not easy to throw a names of the specific projects - you did not specified your needs.

T.
by temol
19 Aug 2019, 14:51
Forum: Boutique Stompboxes dissected...
Topic: Benson Preamp [traced]
Replies: 89
Views: 25681

Re: Benson Preamp [traced]

It may be cheaper to use charge pump than buy MMBFJ201 transistors :)

T.
by temol
18 Aug 2019, 19:10
Forum: Boutique Stompboxes dissected...
Topic: Benson Preamp [traced]
Replies: 89
Views: 25681

Re: Benson Preamp [traced]

Here's some Ltspice simulation screenshots. Comparison between J201 and 2N5457. Drain resistor values adjusted to get the same voltages as with J201. Frequency response benson1.jpg Output sine. benson2.jpg benson3.jpg Sine at drain of Q1. 2N5457 in green. benson4.jpg Sine at drain of Q2. 2N5457 in g...
by temol
26 Jun 2019, 15:24
Forum: Parts Sourcing & Trading
Topic: capacitor u1J163
Replies: 5
Views: 2872

Re: capacitor u1J163

My guess - 100nF 63V
u1 or .1 = 100nF

T.
by temol
30 May 2019, 16:31
Forum: Ready-To-Build Effect Projects
Topic: BAJA LA2A Style Optical Limiter [verified]
Replies: 98
Views: 21509

Re: BAJA LA2A Style Optical Limiter [verified]

You are absolutely right, a typo.. of course 353.

Thx.
T.
by temol
29 May 2019, 19:22
Forum: Ready-To-Build Effect Projects
Topic: BAJA LA2A Style Optical Limiter [verified]
Replies: 98
Views: 21509

Re: BAJA LA2A Style Optical Limiter [verified]

Hi Bajaman,

why did you use LF535 here?

T.
by temol
01 May 2019, 20:37
Forum: Parts Sourcing & Trading
Topic: j201 substitute
Replies: 28
Views: 9516

Re: j201 substitute

POTL - where did you order the adapter boards? China? Last time I've checked ali and ebay, probably all of the cheap adapters had "wrong" pinout. 2-3-1 instead of 3-2-1.

T.
by temol
30 Apr 2019, 09:47
Forum: Parts Sourcing & Trading
Topic: j201 substitute
Replies: 28
Views: 9516

Re: j201 substitute

Thanks for the comparison traces.
I expected that frequency response plots won't match.
Do you have MMBF4393 ltspice model you can share?

T.
by temol
28 Apr 2019, 16:55
Forum: Parts Sourcing & Trading
Topic: j201 substitute
Replies: 28
Views: 9516

Re: j201 substitute

Hi Manfred,

how about sine shape and frequency response of the stage after adaptation? Are they identical to the J201?

T.
by temol
07 Mar 2019, 13:26
Forum: Boutique Stompboxes dissected...
Topic: Fortin - Grind Pedal
Replies: 45
Views: 18462

Re: Fortin - Grind Pedal

Fortin 33 based circuit is available from a PedalPCB. Very similar to the TC preamp, minus bass and treble as potentiometers.
I have it on a breadboard now. 32V from a charge pump, no clipping so far. Maybe adjustable EQ is causing clipping issues and that's why 33 has fixed eq.

T.
by temol
06 Mar 2019, 20:33
Forum: Modern Stompbox Effects (1975 - ...)
Topic: The great "I'd like to see the guts of" thread
Replies: 228
Views: 353799

Re: The great "I'd like to see the guts of" thread

Manfred wrote:I see now, it works together with the resistor switching by S1.1.
Exactly :)

T.
by temol
06 Mar 2019, 11:18
Forum: Modern Stompbox Effects (1975 - ...)
Topic: The great "I'd like to see the guts of" thread
Replies: 228
Views: 353799

Re: The great "I'd like to see the guts of" thread

It's a DPDT (SW1.1 and SW1.2) on/off/on switch. So in a middle position C7 is disconnected.

T.
by temol
14 Feb 2019, 09:44
Forum: Ready-To-Build Effect Projects
Topic: BAJA Ampeg SVT bass amplifier pedal 9v 010418 [verified]
Replies: 27
Views: 5134

Re: BAJA Ampeg SVT bass amplifier pedal 9v 010418 [verified]

I have it on a breadboard now but there is some kind of clipping/distortion/excitation issue. I've breadboarded this circuit three times and this effect is present every time. It's like high frequency distortion or "too much treble" effect. It dissapears when I remove 10n from upper treble branch. A...
by temol
12 Feb 2019, 11:00
Forum: Boutique Stompboxes dissected...
Topic: DSM OmniCabSim
Replies: 60
Views: 20470

Re: DSM OmniCabSim

Here is the build document for the BAJA version of the Omnicabsim - omnicabbaja-xlr_build_doc.pdf

T.
by temol
11 Feb 2019, 18:26
Forum: Ready-To-Build Effect Projects
Topic: BAJA REACTOR 010119 [verified]
Replies: 47
Views: 4700

Re: BAJA REACTOR 010119 [verified]

I like this small scrap of wood.. does it affect the tone? Is it a tonewood? :)

T.
by temol
10 Feb 2019, 09:20
Forum: Modern Stompbox Effects (1975 - ...)
Topic: The great "I'd like to see the guts of" thread
Replies: 228
Views: 353799

Re: The great "I'd like to see the guts of" thread

caspercody wrote:Pedal PCB also mentioned they were doing the Revv G3.
And here it is

T.
by temol
04 Feb 2019, 21:25
Forum: Boutique Stompboxes dissected...
Topic: DSM OmniCabSim
Replies: 60
Views: 20470

Re: DSM OmniCabSim

Thank you for the reply Daniel.

Here is my version of the sim, boxed and almost ready (I have to wire GND switch) .
IMG_9100_600.jpg
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IMG_9101_600.jpg
IMG_9101_600.jpg (103.45 KiB) Viewed 1191 times
IMG_9102_600.jpg
IMG_9102_600.jpg (91.67 KiB) Viewed 1191 times
T.