Don't post in this forum asking is there is a schematic or layout or info on XXX pedal.
There is a subforum setup for requests already. It is located here:
REQUESTS FORUM
Any requests posted here will be moved to proper sub forum, and I'll also make nasty remarks about your mother. :mrgreen:
also, if you have a problem with your build, post it in the WORKBENCH. these threads are for circuit analysis only. by all means, if you discover something we should...
Guyatone made a large number of pedals by there's surprisingly few schematics.
I started off looking at the Guyatone PS-001 Distortion but there's not a lot of PCB pics out there.
In the process I found some info on the sister pedal Guyatone PS-005 Overdrive. At times people have tried to guess what this one is as well
I managed to trace the structure of the circuit. It looks like a Boss OD-1 (ish) circuit with a Muff Tone control. Unfortunately no values.
guyatone PS-005 overdrive -...
If anyone has some good pics of the part values please post them. It would be a big help - thanks!
While I've traced the circuit and I'm confident the circuit topology is correct, there are however many missing values. Some values are uncertain due to poor pics. Others I have outright estimated. That goes for both resistors and caps. I'm pretty sure the electros are correct.
To emphasize the incompleteness of the schematic I've only given it a draft version number of 0.1a.
Here's a link to a dropbox folder with some guts of the Guyatone PS-007 Phaser, including a .svg file with the components values. I hope I did not mess with the color code though...
Guyatone PS-007 Phaser folder
Tracing ain't done, but it may be very close to Boss PH-1, or some other 4-stage FET phaser. The MA522 part is a low battery detection, see the schem I've made for the Guyatone PS-006 Analog Echo...
I made some inroads towards tracing the PS-001 Distortion.
Turns out it is more than an MXR Distortion+ with a Muff tone control. Structurally it's more like a Boss DS-1.
(Given the similarity of the Guyatone PS-005 Overdrive to the Boss OD-1 it's not surprising there is some similarity to the Boss DS-1.)
Unfortunately there's some ambiguity regarding the tone control caps. (The two polyester caps on the middle-edge of the PCB where the wires are).
I've trace the KMD KP-100 Distortion. However, due to limitations in the pics I had there's a few things missing:
- pot values, taper and precise connections are unknown.
- cap values are unknown.
- unfortunately the gain resistor, R8 on the schematic, cannot be read.
- a big one is there's so many possibilities to wire the Bass and Treble controls.
It's an odd circuit. Do not correct it to be a Baxandal! the opamp is wired as
a buffer.
I've taken some inspiration from Manfred's trace of...
Found the Schematic by tracing.
The tone control (WAVE) is unusual.
Applause Super Distortion Top View.jpg
Applause Super Distortion Layout.JPG
Applause Super Distortion wiring.jpg
Applause Super Distortion Signal.jpg
Applause Super Distortion Switching.jpg
The series connection of the two Z-diodes across IC2a has no effect, because the threshold voltage of about +/- 6.1 volts at 9 volts supply voltage can never be reached.
The schematic:
As you can spot it is a Ross Compressor clone; as I marked in RED the changes they made to the schematic. These changes don't sound really good...... my unit was really bright and 'Boring' sounding!!
Years ago (10 or more), there was a mod floating around for reducing noise in the Boss VB-2 / BYOC Vibrato circuit. I'm 99% positive on part of the mod involved change the value of one of the ceramic disc pf caps. I remember booking a page on the internet that detailed the mod, but I've apparently lost it and I've spent the last hour Google'ing with no luck.
The pedal works perfectly in 8 second mode. However, when I switch to 2 or 1/2, the effect doesn't work. When it kicks in, it basically doubles the signal overtop of the input, i.e. Just makes the sound a little warmer. There are no trails, echos, or repeats. The delay controls don't seem to change anything. The controls all work perfectly in 8 second mode however. I've recapped and swapped ICs. I get the voltages on the 4066 when sliding the selector switch. Interestingly, if I jump pins 3&4...
Hello, everyone!
I was lurking the forums for quite a long time. During this time, I nicked plenty of circuits and ideas for my personal collection. Now, the time has come for me to repay in some way... even if it is a small one :)
Three years ago, before I have started dabbling in the FX scene myself, I have acquired a Hiwatt Tube Overdriver pedal. It was being sold brand new at a half price (they must have not been popular here in Poland), so I picked it up, while my friend bought a Hiwatt...
When Guyatone first began plans for the mighty micro series, they polled professional musicians in Japan to see what they felt would be the most useful pedal for a working guitarist. The answer was what would become the SSm5 Sonic Shaper!
Based on the original Guyatone EX-2 Exciter model (never sold in the USA), the SSm5 is a harmonic booster pedal that, by emphasizing specific frequencies, can offer the guitarist a broad tonal palette. The key to the SSm5 is the Shape control, which adjusts...
Hardly what i'd call a Modern Stompbox but the Schematic dates it as 3 years out on '75.
Anyway, here's a Redraw of the Factory Schematic for those of you with poorer eyesight. I think the Redraw is Correct I can't recall where I got the original Factory one from and nor can I confirm its Authenticity so if someone knows the link to that or if it's correct, that'd be handy.
I might see about converting it to 9V & V3205s as it's quite a nice simple looking Delay Project.
I'm half tempted to get a Liverpool just to see what's inside, but if someone has already had a look, I'd be interested to hear it.
Supposedly, some guy on YouTube bypassed the speaker sim so he could use it with his amp - that's what I'm looking for.
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