Nice page on all the versions

So, I got this DD3 in that I could not recognise from the insides. I have seen a lot of different versions over the years (Big IC, IC on the 'other' side of the board, SMD units, etc) but this one is different.

I got this in for a trails mod, a mod I've done a lot on the older models. But this unit lacks the common points I use to perform the mod. There is no 570 IC in this unit and the signal path is different. It also sounds not like my own DD3...... more...

The Best of Metal ! :twisted:

Attached all the details, schematic, pcb and layout.

hugs
Andre

Hi. I don't know if this is the right place to post this, but I have an Ibanez TS-7 that is currently not working. I bought it in unknown condition, and while the bypass works properly, when the pedal is engaged there is no sound. After opening and a quick inspection, I noticed that at least the D7 diode is broken. What replacement part can be used for this?

From Moldova, via Siberia...

Problematic to identify everything, I guess, but will post guts when it arrives

Another cool pedal, sounds very nice, warmer than the Ibanez 909

Bogner Burnley inside photos. (Burnley or Burnly on pcb)

Hi All
The first Shredmaster schematics circulating years ago , showed an inverting configuration of the third opamp (just after the tone stack).
Afterward original Marshall schematics were exclusively showing a non-inverting configuration for that opamp.

Pls. if someone knows:
Were those first schematics simply wrong, i.e. Marshall never produced a version of the SM w/inverting stage?
Is it known whether Marshall implemented different schematics during production?

Thanks!
Regards
Lcv

I was just comparing a Tubescreamer-Schematic with that of mentioned stompboxes. Can anyone explain the difference in how the first two gain stages are setup (inverting) compared to the tubescreamer (non inverting) and what this means sound wise?

Best regards,

Florian

Ok I got a RACK VERSION of a rev1 chandler tube driver...BUT...this has been modified by the previous owner

He's an acoustic guitar master and used this ONLY as a preamp...so asked a tech to modify this to REMOVE any drive or distorte signal
I can provide gutshots of everything inside but its modified so the request is
ANYONE HAS a PCB LAYOUT/PHOTO/ or actually a rack like the one I have...just Open it and give me some info
i cant really see any sign of mod (apart from some new resistor or...

Untitled.jpg

Chinese Klon Clone. The op amps are marked with JRC4558, the charge pump chip is TC1044.

It sounds okay, good in its sweet spots, but I have not played a real Klon or any of the popular clones so I can't really compare. It's in the realm of the Klon sound, but listening to videos on youtube only goes so far.

It's true bypass only, no switchable buffered bypass.

Soldering looks okay to me, apart from a few components not being aligned straight.

I was a bit afraid this would be yet another distortius maximus, but slight hope of seeing a pinnacle got me buying one. Nope. None of the above. Three 4558s, volume and gain A100K, bass C50K, mids A100K and treble A50K. No guesses from me at the moment as i won't have the time to trace it anytime soon. Sounds extremely good for a 25€ pedal.

I traced this unit a couple years ago, i took some photos at the time but i can't find them anymore.
T1 is a BC547, the Jfet is a J201 and the Opamp is LF353.

Hi , looking for inside pictures from korg CMP1,compressor about 6 pin footswich wiring

thanks for your help if u have this ;-)

Korg OVD-1 Overdrive ( 1985-.....? Korg series1)
MP3 Demo (from Japan):

And Youtube...

Hello all,

I have an old Yamaha Tone Booster TB-1 and it sounds pretty good.

The main problem is the very low efficiency of the tone pots: the bass pot has almost no effect, while the treble pot has a little more one.

The schematic is here:
korg tonebooster.jpg

Anyone has some mods for it?

Thank you very much!

Official service schematic and component layout of the vintage MXR 117 Flanger

This is one I haven't found posted elsewhere (for free), so here it is.
Marked as official, and I can confirm that it looks to be spot on compared to mine.

Great pedal - over designed CMOS switching

I just picked up a dead Univibe UV-1 with pedal for less than a 10 box of strings - couldn't resist.
Pedal is the last revision with the single board - no chip on the switch board, etc.
Board has a 2-12-03 date but I think this is the 1997 version as it says REV A.

No power or LED's - nothing jumps out as a problem - but beyond confirming that power is getting to the regulator, not sure where to go next.
There is 18 vdc on pin 1 of the UA7815...

Friends, a took a peak into a (now) defect yellow pfhazel...
This, to me, is a torroidal core... which makes this the same as the red one... Any thought or comments? Did I miss anything? :hmmm:

Hey everybody.
A lot of the fun with these cheapo clones (Joyo, Nux, Caline etc.) derives from the guesswork which pedal they ripped off. While most of the Caline lineup has been decoded, no one bothered to take a look the CP-15. There were some guesses, ranging from Wampler Triple Wreck to EHX Metal Muff. So I did, what we do best: Bought one and opened it! :horsey:
The leaflet straight up tells you that it is inspired by the Boss Metal Zone MT2, but while I am no use a tracing, the topology...

Got this all alone with no housing or anything? What is it? Any MOJO?

hello !

i have problem in different volumes guitars. (Telecaster and PRS)
I want to make an active AB box .

which best circuit so I can solve the problem of volume of different guitars

as the pedal morley ABY mix will solve the problem?

thanks