Hi,

I bought a broken RV-5 because I thought I could repair it. First thing I noticed is that somebody tried to replace the D1 with another non SMD diode, but I quickly replaced it with the original part. By then, I had noticed the IC6 S8520E33 was hot, so I did the 3v3 stabilization mods, except that I used a LD1117V33 with a TO 220 package (I checked and it seems to be the same as the other one; I couldn't find the SOT 223 package anywhere where I live). I soldered the 1117 with little wires...

Recently i've give a try to some demonfx pedals, since i have not much time to build myself.

The last was demonfx full bb preamp, clone of the two custom shop xotic bb preamp, mid boost and comp versions.
The first thing i noticed when i opened the lid, is that it's based on the single volume pot schematic. That seems not to be correct, as Aionfx tracing journal point out.

The pedal is as usual a copy of the classic ts with a useful active tone section. Is has both the two options sold...

I’m not a huge fan of the RAT, but I really like the circuit design and have built a few clones for people over time. I decided, however, that I’d build one for myself, incorporating all the basic modifications I know and adding a Blend knob as well. The result turned out quite nicely, and since I’ve been mainly playing bass lately, the Dry Blend seems to work great.

It’s still not my tone, tho :lol:
Here's the schematic with some comments (it might not be 100% accurate because I did a lot of...

Found several ended listings of this crazy pedal

More photos here:

Is refered as a Leslie pedal sound: note 2 (!) inductors and one LDR/LED set!
Ben

Hi all!

Got this pedal cheap as it 'didn't work' ==> turned out that the LED resistor was loose. The pedal works fine, just the LED didn't work.

20210905_000805.jpg 20210904_225922.jpg 20210904_225903.jpg

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!!

EnjoY!
Joyo - Dyna compressor.JPG

He sorts his germaniums into low, medium, and high gain. Just wondering if anyone knows what the gain ranges for each of those are? Is his low gain 20-30uA, 30-70uA? Seems like one person's low gain could be another person's medium.

Claybridge Fuzzmaster/Claybridge Fuzzmaster MKIV

I managed to trace the Claybridge Fuzzmaster MKIV. Schematic below.

Australian made Fuzz pedal from the late 60's
(not to be confused with the Ace Tone Fuzz Master)

Models and history (and pics):

Fuzzmaster MKIV pics: (click on scroll arrows for more pics)

Schematic of Fuzzmaster

Correction: 33k at output should be 22k

DAM Forum Clone

Effects Database

Schematic of Fuzzmaster MKIV
claybridge fuzzmaster MKIV sch V10.png

The Nurse Quacky is a classic, fun-to-build envelope filter that requires no special parts and sounds great. There are a few mods out there like release time switching and whatnot, but I had a few additions I wanted to figure out:

- Filter Drive: Wanted to see if dirtying up this filter was an option.
- Q control: Nurse quacky gets a bit too sharp when used with fuzzed or waveshaped sounds, so I wanted a control to tame that.
- Inverted envelope: This was a stretch goal, but I'd used the NQ...

Hi, I'm working on a project of simple DI Box with splitter/buffer functionalities.
The idea is to have a direct unbuffered output and some buffered outputs and ballanced output to send the signal directly to the mixer/audio interface. I want to plug it in somewhere at the beginning of my pedal chain using an input and a direct output, to affect the tone as little as possible, then use buffered output for some other purposes like recording clean signal on my laptop and an XLR output to send...

I got one quite cheap and like it! It really has that 60's Fuzz Tone sound and more, with the added tone control and octave switch.

Enjoy!

Fender - Hammertone Fuzz.JPG

Pics and more info can be found on my blog. Link in the sig

You gotta be kidding me...

Hi there,

I have a green box MXR 118 Analogue delay that i have brought back from the dead and am trying to align but cannot find the alignment procedures for clock frequency and location of trim pots anywhere...

It is the SAD1024 version with 118-3001 102 board.

I have found a couple of alignment sheets on here but they are for the PT2399 modded version and refer to trim at point A with no reference to what point A is.

Thanks,

Searches didn't clear up whether this was an optical compressor or not, so I had a look. I am guessing the big black cylinder with a triangle on the board next to it is the LED and photoresistor--does that seem right?

To save some squints, I observed a TL072 opamp, LM358 opamp, and a OP275G JFET. Seems to be some tantalum caps too. Transistors labelled 1AM (MMBT3904 from my searches).

Sorry for the lack of additional details, I just had it open and wanted to check it out....

Greetings

Re: Boss ODB-3 intermittent sound.

I have recently found in my collection of pedals, one of them.

The problem is that when I step on the pedal to turn it on, the sound is faded. It sounds like the effect is only kicking in very little. If I keep my foot down on the pedal, the sound Is perfect. I believe something is wrong in the switching circuit. I've tried looking for a schematic but haven't had any luck. Any insight would be helpful.
I'm using a Voodoo Labs ISO 5 power supply...

i have a boss od-2r and i am concidering moding a blend pot into it verses just buying a boss ls-2. i found this pedals sounds good with my bass but i would like a wet/dry mix.

this is the page that i am using the schematic from for the pedal, i was hoping for a little guidence on where i should try to make my connections/breaks for a blend pot if possible. i have not opened the pedal yet to see if there is any room in it for the pot, but worse case i can put it in a different box and maybe a...

Recently got a commission to convert this EQ to 1/4 jacks, new power supply caps and NE5532 upgrade to make it less noisy. I took a bunch of photos to post here for tracing if someone wants to have a go. I have one of these of my own too if I need to check any part values. MXR 10 Band EQ 01 .jpg MXR 10 Band EQ 02.jpg MXR 10 Band EQ 03.jpg MXR 10 Band EQ 04.jpg MXR 10 Band EQ 05.jpg MXR 10 Band EQ 06.jpg MXR 10 Band EQ 07.jpg MXR 10 Band EQ 08.jpg MXR 10 Band EQ 09.jpg MXR 10 Band EQ 10.jpg MXR...

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...