Some of you may know me from the other forums, and I am glad I found this place!

I got this pedal on ebay for cheap, and plan to sell it. I haven't drawn a schem, but it looks to me like a Turbo Rat with a opto-volume pedal after it. It does sound quite good, but I am more of a fuzz guy, and a volume pedal is useless to me. I just bought it cause it was cheap and I was curious.

BIG PICs:

Hi everyone,

I´m working on an Ibanez GE10 and apart from several attempts to improve its sound, I´d like to run it at 12-18V for more headroom. I use BB OPA2134 as OP´s. Two Problems so far:

- When I ran it at 12V (Voodoo-Lab PP+2) which the parts allow for, I noticed humming which isn´t there at 9V. It´s audible and increases with sliders all up. Any Ideas on its origins? Filtering? OP-amps?
- There is a 16V rated 22uF nonpolar electrolythic in the level-path. Do I have to change that too?...

I've had the Fab OD for years and like it pretty much, but often wish I could dial in a bit more treble. Having only ever found Clay Jones' schematic without values I finally took it on myself. Skipped the buffering and switching. Apart from all the SMDs there are four poly caps that could be easily changed. I see the biggest cause of mud to be from the gain network, unfortunately C7 is a SMD. Lowering C2 could bring good results. I haven't modded it yet, but thought I'd share it. I'm glad to...

Super-rare effect from Pearl in the same series as the OD-05, PH-03, etc. I traced it but omitted the bypass circuitry. A couple of values I still have to pull out and measure to confirm (R6, R14/15/24/25, R38) which are marked with asterisks on the schematic.

It's a fully-parametric EQ using a couple of standard RANE topologies:

The biggest thing the circuit needs is to be converted to use a 20kW pot for the two frequency boost/cut controls since 50k's aren't available to DIYers.

I'd...

My best guess is that it is a Boss OD-1 clone with some added mods. It is very bright and LOUD (guess the taper of the volume pot :))

Pictures from Discofreq's database
(when some more pics are needed, please ask!!)

Enjoy!

Laser - Over drive.JPG

I have a Dr.J Green Crystal Overdrive here with me, it's a Timmy clone.

Found this schematic, don't think there's a previous topic on it.

Is there room for improvement in the circuit? :D

Hello

I just bought an line6 M9 and I want to control it with the FX-17
Googling it i found there's already been some experiments with it but no conclusive information, except that the mod would be but a simple change of two resistors.
The values of the build in voltage divider.

Can this information in anyway be confirmed ?
And if so can you point me to the 2 resistors to change on the photo (sorry about the quality)

Better Resolution :

Thanks.
:)
If you plug a cable into the...

Hi guys
I am trying to fix a dead Holy grail Plus, yes its smd based and bla bla I do not have an issue with that, just need some hints/advise
First, does anyone have any kind of schematic for this one ???

Its totally dead, bypass is fine, when on no light in LED or sound
I have measured the 2 5V and the 3.3 V, all 3 are fine.
Exchanged all the Electrolytes, as one of them was leaking
Exchanged the shitty stiff flat cable to the switch, as it was broken several places

Still dead.......

Hi there,

i traced this little MiC Pedal,

It is SMT of course and looks like some typical bass-boost and clipping diode mods and a simple blend/opamp-boss modded YATS.

Sounds ok, although i did some mods to make the TS-part more vintage sounding. Also needed to change some of the wiring to the switch because i got feedback/oscillation at higher gain settings..

Since I was bored last night and there wasn't enough light to shoot sharp pictures that would set AG to work:

Hey, does anyone have a picture of this pedal? I traced this circuit back in the '90's... But I didn't take a picture of it...
It's green and has the old butterfly logo Ibanez pedal like this (but it says DIRT BOX):

So I am growing to love this community on here and want to contribute somehow, even though i am a noob. I really am impressed with this Harwire CM-2 overdrive. IMO they knocked it out of the park with this one. It ahs kicked my Zendrive and OCD clones right off the board at the moment! I rock it as a medium/high gain OD, in the modified position, gain at aroun 2:30 and bass up around the same. I really dig the low knob. Some cool looking IC's inside too. Looks like 4 of em?

A Japanese octaver pedal
$_57.JPG $_572.JPG
I wanted to check it out as the octave down has an distortion effect settings....... fills my need!

The pedal has a volume drop when engaged that I fixed with an extra transistor stage. The tracking is pretty good.
Only 1 octave down which has a blendable distortion effect! nice!

Schematic:
Axtar - Octaver.JPG

...

schema

Thought I should contribute something. Here's some gut shots of the Dimarzio Very Metal. I'm going to attempt to trace it over the next few days but it's my first time so mightn't be the best.
2486046401_e4b60058ef_b.jpg

2486872580_baef8b22b6_b.jpg

2486038369_cca4b4951d.jpg

The IC is a M8730 LF 442CN

I've read it compared to a Rat and a Big Muff, I think Rat is closer myself.

Also, I know this is really late but here it goes.
Dimarzio made the Very Metal in 1987 and 1988....