I got this today off a dusty second hand shelf. I can't find any reference to it on the internet and am not sure who made it or what the intended usage was. It seems that if the input was low it could be some kind of germanium sniffer unit. It's got a good germanium fuzz thing going on when I plug into it.
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Each channel is the same. It came with 3 of these japan stamped microphones with magnets on the bottoms of the holders. It probably originally had 5....
Just trying to get my head around why the two LFOs in a Mu-Tron Bi-Phase are so different - they both put out square and sine waves.... it has been mentioned on the other forum that one is voltage controlled. I’m still wondering what the purpose of this is.
Thoughts / help please? Why? Because I'm planning on modding a Phase II to have square and sine wave as options, and I would like to understand more about what is going on in the Bi-Phase.
I'm not sure of the manufacturing date of my unit... I hope I post in the good section.
I've done a full recap on my old QSB as it was really too much noisy...
I've not found pictures anywhere, so I've taken some photos of its guts, just for the curious because it is not a real good reverb unit (the only one spring measures around 20 cm and is really boingy :mrgreen: ).
After recap' it's dead silent, and I even think I've more headroom, but it's still a bad reverb for guitar: it...
Way back in 1971, I bought a combination fuzz/wah pedal at a local music store. The manufacturer name on it was Jax, but I have since found out it was made by Shin-Ei of Japan. This is a picture of the side panel showing the fuzz:
The wah was okay for what it was, but the fuzz was quite something. It had two voice settings. One was a very buzzy Vic Mizzy sort of fuzz that I didn't like much at all. But the other voice was a cool sounding boost without the buzz, and I liked it so much that...
I have been rebuilding an old EP3 and have hit a snag, mostly from the where do I find this? corner.
Someone before me had wired in a new power cable and must have done it backwards and blown both bridge rectifiers so nothing worked at all. Replaced the rectifier for the solenoid/shut off switch and the motor and solenoid worked, but no power was getting to the board. Replaced the main input rectifier (and the big can caps) and the light came on and there was some playback of old recordings,...
I just picked up one of these and it's been pretty glitchy. I tried cleaning the pots but they still seemed bad. The level pot was cutting right out below 8. I opened it up and the carbon is completely gone. Ditto for the sustain. Anyway all this to say does anyone know the value of these? I can't seem to find a schematic. Is there a way to tell by the markings? I know one set of numbers represents the manufacturer and the year/week of its build not sure what the other set means. Both pots have...
Hi guys,
my english is bad so I bounce presentation and my sentences will be short and some time these last could be strange.. I beg your pardon for this...
I have a echorec binson e4t (I attach the schematic). If I increase length (feedback) I have only max 4/5 repeat even if I put on max the internal trimmer.
how can I try to edit in the feedback circuit for add the number of repeat?
thank you and excuse me for errors and ignorance
Luca
as i grub into my saved Schematics.. i found an old Operating Manual of an old Uni-Vibe (first Version i think)
its a Scan of that Manual including a Schematic that i found some years ago somewhere on the WWW ...
Hi !
Since there seems to be no trace of this pedal on the internet (that I could find, at least), here's one !
It's exactly what it looks like : a Boss DC-2 Dimension-C chorus clone.
The only other pedals I could find from this brand on the used market are a Steven CH-6 Super Chorus ( Boss CH-1 clone) and a Steven FL-1 Flanger (Boss FL-2 clone probably), but there are a few more on effectsdatabase.
Hi
few days ago a guy give me a fender fuzz wah pcb. unfortunately he had throw away the pedal box many years ago and just keep the pcb. it s the same pcb you can see here
the pcb back is labeled 1967 c peterson + a serial number.
the fuzz is working. but i don t have the pots for volume and wah and can t find anywhere over the net a schematic for the early fender fuzzwah version.
So if someone have a schem or hi rez guts pics so i can find where and how are the potentiometers wired; i could...
After years of doing mods I'm finally getting into building my own stuff from scratch. As per usual, one of my first stops is the dreaded classic-sounding-yet-highly-tweakable fuzz face kind of things (though I'm probably leaning towards more of a MK1.5/Vox Tone bender type sound) and one of the things I want to address is the gain control. Although we all love what a fuzz face type circuit does on full blast, I've never liked the idea of having to turn down the guitar volume to make it clean...
As we know, these stompboxes have been made by colorsound.
Since we don´t have a photo from the track side, we can only speculate..... so we have:
a LM1458 (NS) from 1978
a µA 741 CP (TI) from 1978
4 diodes 1N 4148
220k resistors....
Hey, now there comes the EH Big Muff Pi Op-amp into my mind.....
Borrowed this one from a buddy and there doesnt seem to be much info on it anywhere. It's certainly not an overdrive in the modern sense of the word. Its buzzy and fuzzy and the EQ sounds like a wah. This is my first attempt at tracing, so hopefully i'm doing this right. Here's what i've got so far:
I've got all of the component values listed out, but left them on my bench at home. I can add them shortly. The IC is a dual op-amp, as you could probably figure out by looking at...
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