New Effect: Bullitt

[rockgardenlove]

Is there a PCB layout anywhere?

[The Tone God]

It is so intriguing that I think I'm going to take the dive on this one and try my first ever PCB layout. I've got to learn how to do it at somepoint anyway

Will keep you posted!

Give it a shot. I'm sure others would enjoy it.

I'm a bit late to the party.

Well since your late you can't use JTAG with it.

Is there a PCB layout anywhere?

No or atleast there won't be from me. They take too much time. I would rather spend my time developing other things then on something that is not going to be used much.

Andrew

[brad]

It doesn't really need a PCB layout.  A lot of the parts could be soldered directly to the socket and pot lugs, and the rest could be on perf/vero.

[Uma Floresta]

I know this is an ancient topic, but I had a quick question on the LFO on this. Is it a sine wave or triangle wave? Also, is there any way to affect the speed of the upward and downward swing independently? I'm not up on LFO designs, but I know switching out cap values on the VB-2's LFO could give you a slower upswing than downswing and vice versa.

[The Tone God]

Its sine. I wouldn't play around with the LFO too much as it can become sensitive to changes losing range, shape, or even failing. Triangle tend to be more tolerant.

Andrew

[Uma Floresta]

Its sine. I wouldn't play around with the LFO too much as it can become sensitive to changes losing range, shape, or even failing. Triangle tend to be more tolerant.

Andrew

Ah, thanks for the info and the tip. I'll leave the LFO alone.

What I have is actually the OLC version of your Bullitt design - the Darth Fader, which uses a single tube and omits the tone stack. It's really a fantastic sounding tremolo.

[The Tone God]

What I have is actually the OLC version of your Bullitt design - the Darth Fader, which uses a single tube and omits the tone stack. It's really a fantastic sounding tremolo.

Excellent. Glad you like it!

Andrew

[Uma Floresta]

What I have is actually the OLC version of your Bullitt design - the Darth Fader, which uses a single tube and omits the tone stack. It's really a fantastic sounding tremolo.

Excellent. Glad you like it!

Andrew

I think I was the first to get one (of the OLC versions). The clips at OLC were actually recorded by me - the owner likes to use clips from customers. Your design has a certain je ne sais quois. The sound isn't radically different from other trems, but there is something special about it. 

[The Tone God]

I think I was the first to get one (of the OLC versions). The clips at OLC were actually recorded by me - the owner likes to use clips from customers. Your design has a certain je ne sais quois. The sound isn't radically different from other trems, but there is something special about it.

Oh right on. Great clips and thanks for the compliments. The OLC guys are great to work with.

Andrew

[composition4]

... some kind of "timbre-tremolo" (Fender often used it),
where the Highs and the Lows are being accentuated/muted alternately,
such that apparently it sounds like alternating volume,
but in fact the average volume stays roughly constant
while the frequency-content is being varied.
Since this is being accomplished by alternately having the signal passed through a highpass and then through a lowpass,
some "phase-filth" is playing a role in there, too.

This idea interests me a great deal...
Is there already a project which does something like this?

If not maybe later down the track I'll get experimenting (which can sometimes involve more "guessing" than actual knowledge...)  I'm thinking split signal into to filters, HPF/LPF with a fairly gentle cutoff, with pots on both to vary the cutoff frequency.  Each of these signals going into two separate tremolo circuits... one LFO in first trem circuit linked to the other LFO in the second trem circuit so that they are always opposite phase (how do I do this?)..

Sorry to go OT, let me know if it's more appropriate in another thread

Jonathan

Jonathan

[Uma Floresta]

... some kind of "timbre-tremolo" (Fender often used it),
where the Highs and the Lows are being accentuated/muted alternately,
such that apparently it sounds like alternating volume,
but in fact the average volume stays roughly constant
while the frequency-content is being varied.
Since this is being accomplished by alternately having the signal passed through a highpass and then through a lowpass,
some "phase-filth" is playing a role in there, too.

This idea interests me a great deal...
Is there already a project which does something like this?

If not maybe later down the track I'll get experimenting (which can sometimes involve more "guessing" than actual knowledge...)  I'm thinking split signal into to filters, HPF/LPF with a fairly gentle cutoff, with pots on both to vary the cutoff frequency.  Each of these signals going into two separate tremolo circuits... one LFO in first trem circuit linked to the other LFO in the second trem circuit so that they are always opposite phase (how do I do this?)..

Sorry to go OT, let me know if it's more appropriate in another thread

Jonathan

Jonathan

Weber sells a tube harmonic tremolo/reverb kit - they post a schematic as well:

http://taweber.powweb.com/store/kits_weber.htm#5H15