Danelectro Vibrato --> Univibe (take 3 - fianl post on th

Started by Chris S, May 12, 2004, 10:13:16 PM

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Chris S

Okay so I have converted as mini danelectro vibrato into a univibe... sort of.

The first thing I did was change the Cap coming from the speed pot to 0.33 uF instead of 1uF. This way it runs much faster. To my ears this seemed to affectd the mix between the clean signal and the vibrato signal.

The second thing I did was cut the jumper wire on the smaller PCB. This is for the clean signal. when it's cut it will give you the traditional vibrato sound. Now the problem is that there is an accompanying tremelo effect as well, to my ears not worth the effort alas unless you want a vibrato tremelo.

The third thing I did was put a 100k in place of the jumper wire so that I could affect the mix of wet and dry signal.

Hey it's not a univibe but if your poor and not playing hendrix covers every night it's not bad.

Chris

jonnyj

Hello Chris. I just read your post about modding your Dano vibrato. I just got one yesterday and I like it a lot but I wish it had a truer sounding vibrato sound. I was thinking of trying some of your mods though I'm terrible with soldering I can sometimes do an ok job. The main thing that I want to try to do is cut that jumper wire on the smaller pcb board to get that true sound you wrote of. Then if I'm brave I'll try the capt o 0.33 uF instead of 1uF. Is this a matter of a trim pot or is there a lot of soldering involved. If it's not then I may even try to change the feedback cap in my PB&J delay to get the reportedly 15 seconds of delay time though the sound quality dives after a few regenerations though it's reportedly not a bad thing. Anyhow about the jumper wire I may be able to see after Ilook at it if it's just a straight jumper like on a motherboard?

Any advice you may have appreciated,

;)

The Tone God

I'm happy to see that you used the search function but you do know that you dug up a two year old thread that had no replies and the OP hasn't been around for almost a year ?

Maybe some more searching and/or a new thread is in order ? ;)

Andrew

jonnyj

Yeah I knew it was old but here's hoping :-[ Anyhow I'll take your advice and post a new post :)

Chris S

Hey Jonny,

Please to let you know I still exist even though i haveb't posted for a while. I've sent you a chicken salad schamtic. On that schematic you'll have to change all of the 1uF Caps to 0.33uF. Then have a listen to it to see if you like the sound once it is going faster. I think I actually liked that and didn't bother trying with the 100k jumper in the end. However it shouldn't hurt to cut the jumper and play with that. It might of - if my memory serves me correctly had a a bit of a tremolo effect as well. None the less all the best. Just be carefull with that dealy I killed one trying to put it into a new box. Which perhaps gives you an idea of my skill level.

Chris

jonnyj

Hey Chris thanks for responding. Good to hear your still with us. Did that schematic you sent go to my e-mail? yesterday morning my server was downloading a message that never made though I don't know what it was? My server usually handles large pics etc. anyhow is it the same dano vibrato schematic aavailable at the other sites? Or is it something you have that shows the trace. For now with my limited skills as well, I want to try the jumper wire cut but I'm not sure what I'm looking at? I've got a couple jpg schematics of the dano vibrato pedal and I see 100k at two places but when I'm actually looking at the board I'm unsure. Anyhow I just wanted it to sound more viby than phasey if that's possible with the jumper cut?

Sincerely, John Johnson
Damascus, MD

Chris S

OK, Thanks for the interest and the personal messages aswell. As I originally posted this 2 years ago I'm working off memory. So in the next couple of days I'll take some photo's, and maybe even post some sound files of what I have done and what it sounds like. The box I put it in contains an EA tremelo as well (I flick between the 2 because I don't use the 2 at the same time) so it might look a bit messy and take me a little while to work out exactly what I've done. But hang on help is on it's way ;D

jonnyj


Chris S

Okay, have been a bit sick and unable to do all I promised none the less here is what I did.

1) in my first attempt I tried cut the jumper wire. This sort of gave a truer vibrato sound but also gave a tremolo sound so overall not good - there may be a way around this.

2) having done this I then changed all of the 1uf caps (only 3 of them and they will be all together) for 0.33uf and wolla you move from slow phasey floyd to fast phasey hendrix.

a schematic is here http://www.geocities.com/chris_summerfield/chickensalad.gif

you don't loose any of the effect as is you just get to make it do it's thing faster.

Good Luck - a great little cheap buy

Apologies for no pics... will look at this when I get better.