Andre
Posts: 327
André Schaap, Netherlands
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That could happen if you are using a LIN pot instead of a LOG pot, or if you have the LOG pot wired backwards. I did use a 500k LIN pot indeed, because I did not have a LOG type, so it's a long travel from 50k to 500k and with a LIN pot nothing much interesting happens in between. The most interesting sounds are really in the 47k, 100k and 500k positions, and I will eventually go for the 3 position switch to keep it a true "Tri-Vibe". I guess the size of this circuit is as much as you can pack in such space without going to surface mount devices. Yes, for me it probably is. I made a PCB with the same size for Mark Hammer's "The Woody" and with 2 Quad opamps and quite a lot of caps and resistors that also was a tight fit, but I see it as a challenge to make rather big circuits fit in a 1590B enclosure. |
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John Lyons
Posts: 5606
Basic Audio
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No Fender amp has pitch vibrato though. I think he's just using two Fender amps, one calls it Tremolo, one calls it Vibrato. Same Volume-WaVeRiNg effect.
No... Some of the "brownface" fender amps use pitch based vibrato. There is a project or two of RG's at GEOfex that simulates this. John |
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Ben N
Posts: 3200
Ben N. - really! Now Israel, once Baltimore
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Andre, nice work. So, anybody going to do a run of boards? John?
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El Heisenberg
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I just looked at the two vibrato circuits at geofex. Has anyone tried them?
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"Your meth is good, Jesse. As good as mine."
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svstee
Posts: 555
Sean V.- Bakersfield, California
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I'm in the process of building the Vibro-Matic III from the Stompbox Cookbook, and the circuit looks fairly similar to this Tri-Vibe. I listened to the soundclips and they sound different, but not radically so. Do you think it would be worth it to build a Tri-Vibe in addition to the Vibro-Matic III? I have around 7 overdrives on my board, so 2 different vibratos wouldn't be pushing it, right?  |
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El Heisenberg
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7 overdrives jesus
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"Your meth is good, Jesse. As good as mine."
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svstee
Posts: 555
Sean V.- Bakersfield, California
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Sadly, that's not a joke. 3 are TS derived too...
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El Heisenberg
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never use PCB. I just look at the schematic, and usually start at the input. I know I need better planning, but I do this just for myself, mostly
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"Your meth is good, Jesse. As good as mine."
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danielzink
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Very appreciative to Andre and all - but does anyone know if ROG is working on a PCB as well ?
Thanks, Dan
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Ed G.
Posts: 767
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The soundclips are very, very impressive. If anyone records any more, I'd like to hear a Leslie approximation at high speed.
I've got an empty wah shell that I think would be perfect for this.
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John Lyons
Posts: 5606
Basic Audio
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Very appreciative to Andre and all - but does anyone know if ROG is working on a PCB as well ?
PCB coming up.
Sorry for the wait guys.
Having a two year old in your care
makes for slow work...
John
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Ben N
Posts: 3200
Ben N. - really! Now Israel, once Baltimore
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Very appreciative to Andre and all - but does anyone know if ROG is working on a PCB as well ?
PCB coming up.
Sorry for the wait guys.
Having a two year old in your care
makes for slow work...
John
Thanks, sorry I missed your original post. Are you using Andre's layout or making a new one? |
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John Lyons
Posts: 5606
Basic Audio
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Well...I had done my own layout but I wasn't happy with it and I boxed myself in in a couple places.
I redrew it with Andre's layout as the main framework, then moved some things around.
It's almost finished...Stay tuned.
John
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Andre
Posts: 327
André Schaap, Netherlands
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Check out my finished Tri-Vibe:  Not too happy about the hole for the LED, but for the rest I like it a lot. |
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El Heisenberg
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looks spectacular
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"Your meth is good, Jesse. As good as mine."
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B Tremblay
Posts: 1510
runoffgroove.com
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Check out my finished Tri-Vibe: Not too happy about the hole for the LED, but for the rest I like it a lot. Very nice work! Thanks for sharing it! |
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flo
Posts: 415
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Looks great! Did you use a printed transparent sheet on the enclosure? Andre, do you take orders for a PCB?  |
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Ben N
Posts: 3200
Ben N. - really! Now Israel, once Baltimore
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Very Fenderish esthetic--Leo would be proud.
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Fuzz Aldryn
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Hey Andre, having trouble here with your posted layout. The signal passes the circuit unmodulated though checking the voltage tells me that the lfo is clearly working. I have to double check my build and your layout w  Regards Helge |
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