Can anyone tell me if the MV has two 100K resistors in the output mixer like the Univibe?

I want to mod the MV by using the instructions outlined in the article as per RG Keen

“Trim the Phase Mix

The depth of the notches in a phaser is what makes things sound interesting, and that depends on the dry and delayed signals cancelling in the output mixer. In the 'vibe, this is done by the two 100K resistors feeding the chorus side of the chorus switch. If the gains of the dry and delay paths...

What is the minimum input voltage for a 78l08 to work properly? I understood that at least 1.7 volts was needed on top, so really around 10 volts. I have just built the Ibanez RC99 rotary using Dirk Hendrik's build guide available via this forum. The pedal expects 9 volts. The schematic shows some power filtering before and after the 78l08 as usual. I measured 7.6 volts after the regulator which would be within the range given by the datasheet, but the datasheet gives a 2 volt dropout voltage....

Hi, everybody.

For me was kind of shock, since this is my main distortion unit since 1984, despite all bad talkings about this pedal.
I know the circuit has changed over the years, differents IC's, etc. But in a way or another, the DS-1 remained essentially the same, IMO. A little more harsh, that's true, or even a little worse than the MIJ versions, but, for me, this is the thing that starts all.

My main concern after taking a look to the circuit, along with the unfamiliar disposition of the...

Anyone got information on these:

All I can find is that it is an updated version of the OD880....

Infact I'm interested in the whole of the Maxon range so if anyone has any other maxon schematics please can you stick a link down so I can check them out!

Cheers!

After a lot of web search I gave up to find the schematic of the rocktron austin gold, it's a overdrive I really like, and use a lot. sadly it is not made super strong.

I posted in this forum the request for a schemo.... but I had no answer :(

I finally, without searching for it :o

Now I want to understand why I like it's sound so much

Does anyone have the Boss CE-5 schematic?. I have to repair two and there is one transistor missing (Q3 and Q4).

The main IC is a MN3007, MN3101 for clock

Not sure where to post this, but I’ve got a number of old TS9 boxes from when I used to rehouse them and convert them to TB for people. Lately I’ve been wondering if I could use these to build some overdrives and house them in, but also use the original switches.

Would I need to build a buffer to use the original switches? Or is this something that isn’t really possible? Or would it be best to search out the 4DPT switches that Maxon uses in the OD9?

Thanks!

thanks to this tread: I was able to get the schem of this pedal.

So now I wanted to share it with you.

greets
Gila

Hi

I'm looking for MXR M-235 Smart Gate Pro Service Notes/Schematic.

Thanks
Luciano S. T.

Hello!
Does anyone have internal picture or schematic of this pedal?

The single control knob gives you up to a whopping 34 dB of additional gain for amazing range, from subtle boost to brash chords to a full, fat overdriven lead, while the 3-way Voicing toggle switch lets you sculpt your high end with a boost at 10K, a cut at 4.8K or a flat setting. Use this switch to take the bite out of overly bright single coils, put more sting into a dark humbucker or to add crystal clear, boutique-style...

Hi,
PNP transistor circuits. Needs positive ground. To make this, and still to be able to use standard 9V dc adapter we are uisng 7660 reverse voltage converter
My question is: why? Why we can't just replace PlUS with ground on schematic and design layout with it? Like Lovepedal Silicon Fuzzmaster? (BTW, why this pedal doesn't just use 3904 instead of 3906 and reverse voltage?)
So, what are advantages and disadvantages of both solutions to power PNP-based circuits? Because I don't believe that...

hi everybody,

does anybody have a schematic of the maxon/ibanez af-9 ? i´m curious to see how it differs from the mutron. i know there is an afl schematic, but are they the same (with the omitting of the hp setting on the afl) ?

cheers,
lohstah

Hi,
Polish manufacturer realised new daley project - PT2399, but without famous distortion in delay effect. It uses NE571 to keep signal clean or whathever. What do you think?

here it is

cb

The PlexiTone uses 4 op-amps. According to Fender56, this is an LM386 driven by an op-amp. Based on that alone, I think nickthemen is probably right, it's a Lovepedal Purple Plexi, possibly with an op-amp input buffer.

Hi, Fellas

Just to add a little more infos, I took some gutshots from my own Hot Plexi, that I'll post here later. In fact, this box is a variation of a Lovepedal Purple Plexi since it carries a JRC386 chip (hidden by the tone pot, barely visible on the circuit board). The...

I had this schematic mayby someone design pcb but not for smd circut??

Anyone knows the tweaks made to the blue tube bass driver version? I'd like to use one primarily with bass guitar and synth on low registers but the bass driver version is becoming very rare...

Hi,
Why any drive in front of Sansamp sound awful? It is something because input buffer in Sansamp or something?

I bought an Ibanez AW7 Autowah (tone lok series) today. A very versatile pedal, but with two problems:

- the range of the sensitivity pot seems to be made for very hot pickups. With a strat, I have to hit the strings very hard or use a booster, even if the pot is fully clockwise. How can I modify the circuit for a more usable range?

- the distortion isn't bad, but it's a little dull sounding. How can I get a little more treble? I think there's enough space to add a 9mm pot... It looks like a...