Anyone interested in a Univibe project? That fits in a 125B?
i would be!
Most likely!
Cool. I finished the layout last night. Very tight, but it will fit. I'll see about getting a couple of prototypes done :)
Yea that'd be awesome. I'm guessin itd fit in a wah shell if it fits a 125b right? Thanks!
Ooh, that would be fantastic!! I took a couple of gut shots of my friend's Analogman KOT.(really nice res too)..I will post them later today hopefully!!
I'm sure many folks would be interested in seeing this!
sweet!! ;D
What if it had to go in a 1590BB, but had some mods to mimic the Mojovibe? IOW, does size, err....matter?
i like the bb size!
BB works for me.
I assume this will be the King Kong. I've been looking forward to this one (this one and the phaser). Fabbed board?
Okay, I think what I'll do is get a very small run of traditional Univibes for the 125B, and a larger run on a modified one that incorporates the Mojovibe stuff and a few other tricks for 1590BB or a wah shell. Sound good?
Next week, I'm going to start working on the delay pedal design, too...I know a lot of people are waiting on that.
+1
YES PLEASE!!!
I'm all for a killer Univibe project.
I would love to have the mods and expression/wah shell to get the full-on action.
Whatever size it needs to be I say--I like the BB size also. It really doesn't hog that much room on a board--especially if you can possibly fit the jacks on top instead of on the sides.
Thanks!
J
absolutely - I've been looking high and low for a univibe.
I'd be in for the mojovibe'ish version..
Design is finished....I'm ready to get this one prototyped :)
awesome ;D
I don't mind a BB - I'd just love to do a vibe! Let me know details when available
I think I'd be down for the 125B version. There are some pretty simple BB sized vibe builds in existence if I'm not mistaken, but I wouldn't build one if it were that size... I just built the porkbarrel at that size and it will vibe in a pinch.
I'm going to be building the Forumvibe into a 1790NS in the near future I think. Part of a 1790NS series of mine...
jacob
The 125B is basically the Forum Vibe. At least, I think most of the mods are in there. I've got the prototypes for both ordered and they should be here around the end of the month. The main focus will be the larger one, but I might make a few of the smaller ones available. I know Barry was doing some boards for the Forum Vibe already, so I don't expect to make it a "regular" project.
I'm up for the bigger board! Go big or go home! :-X
count me in! ;D
I've already built the Mojo prototype, but the LFO is not working yet. So, I'll need to do some debugging on it. The other one has not been built yet, but I will get to it ASAP.
sounds cool, I've been looking for something that does a little more than tremolo. I'm not familiar with all the different vibes though. What is the difference between the Forum Vibe, Mojovibe, Dejavibe, etc . . . ?
Almost nothing. They're all knockoffs of he uni-Vibe made famous by a man named Jimmy. Hendrix that is.
Jacob
Hello, I just joined this forum, nice to meet ya all:) Madbean, I saw your posts on Freestomp about the mojovibe. You mentioned the cells were flush with the board, but I would like to know what the lightshield looked like inside. Was it mirrored? And did you figure out what the bulb number was? I've been on a hellbent quest to nail the sweep, because IMHO he nailed the Hendrix sweep. I've built a couple vibes, and while they sound good, I can't seem to get that sweep nailed!
Appreciate any help.. Thanks
Dave
The bulbs look to be hand-made, so I doubt it will be possible to reproduce it exactly. Most likely, we will have to settle for the closest approximation. But, my intention is to make that a very good approximation!
As far as the shield, it is aluminum, but not polished. So, it it reflective, but I'm betting some of the light scatters across the surface of the shield, too. The shield I'm going to make is from a thin metal sign with reflective tape on the inside.
Yeah, I was thinking on using self-adhesive mylar, It has 94% reflective efficency, you can get it through Amazon for 5.98 for a small roll (but $ 10 shipping!! yikes). I'm bulb searching as well. Supposedly the original used a 28v 40ma bulb.. A lot of people like to use the 1.5v 25ma from RS.. Don't like it. But who knows what I'm doing wrong, lol!
Dave
Well, I do happen to have a 28v lamp, so it's worth a try. I got a whole smattering of them off Mouser...14v, 18v, 28v in different current ratings, too.
I would love one of these! Anybody have one or have first hand experience with one? The clips I've heard are great.
http://www.krmusicalproducts.com/smallmegavibe.htm
Supposedly this was one of THE FIRST vibe clones available..
Madbean... Do you recall what voltages the Mojo runs at? I know he charge pumped it to 18v, is that correct?
I'm curious if the LFO and audio are operating from the same B+ levels... Normally the LFO runs at a higher voltage because it's unregulated as in the case of the Neo... But what I have found, as was recommended from JC Maillet, the original vibe actually ran on 24-25v and I have to say it makes a HELL of a difference when I jacked my Neo up from 15v.. Getting closer to the Hendrix swoosh more than ever.
It opens it up BIG TIME.
Dave
Anyone there?
Quote from: Davefx on November 05, 2010, 01:05:40 AM
Madbean... Do you recall what voltages the Mojo runs at? I know he charge pumped it to 18v, is that correct?
I'm curious if the LFO and audio are operating from the same B+ levels... Normally the LFO runs at a higher voltage because it's unregulated as in the case of the Neo... But what I have found, as was recommended from JC Maillet, the original vibe actually ran on 24-25v and I have to say it makes a HELL of a difference when I jacked my Neo up from 15v. Dave
The entire thing runs off the charge pump voltage save for the last transistor of the phase stages. It appears to run off 9v. Why, I don't know. Anyway, some charge pumps can take up to a 12v input, so it's possible to get close to 24v (probably 22.x) esp. if using 1n5817s instead of 1n4001 (lower voltage drop). I will get some voltage readings when I get back as I need to debug my prototype build of the Mojo, anyway.
Ok, I wanted to turn you on to the stuff I've been doing with my search for the "Hendrix warble" . First, I think my favorite sound of the Sweet vibes was this clip of his first "Ultra Vibe". http://www.sweetsound.com/Audio/Vibedemo1.mp3
It really demos how close the man nailed the sweep.
But, in my case, over a year ago, I completed a Neovibe. I made the little copper sheeting lightshield with aluminum foil, Smallbear NSL7532 cells, flush pointing up on the board, and a RS 1.5v 25ma bulb. I got nothing but thump and no swirl no matter where I adjusted the bias trimmer. In tears, I gave up and the project was benched until last July, when I discovered the works and research of JC Maillet and his Viva-Analog company. You may or may not have heard of him, if you haven't, I must encourage you to check out his site, which I will link in a moment. A brilliant, generous, and talented dude for sure.
Anyway, I ordered one of his boards, became a member of his private forum, and I was a total sponge for knowledge :) He had posted several of his performance mods for the vibe, and all I can say is, that they are what i needed!
His bias offset mod being one of the most significant, as it allows you additional tweak ability to use any different bulb and cells to get just about any warble one would desire. Now back to mine, I ordered a new set of cells, and a 12v 40ma bi-pin bulb (7371 Chi. Mini.)the higher current bulb got me even closer, and I this time pointed the cells directly to the bulb, and with the bias offset mod in place I became ALMOST there! Now the reason I asked you what the voltages were on the Mojo was because I was just about ready to replace the 15v reg. with a 24v. Well I did, and BINGO! I'm pleased with my results and so if you would like to hear it, I give you the link.
Dave.... http://www.viva-analog.com/
Bring on the Vibe! ;D
A univibe would be awesome