Wampler - Faux Tape Echo
Here's a Wampler Faux Tape Echo. Main feature that sets it apart from the other PT2399 delays is a flutter sound that is more random.
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- wampler fte.jpg (226.97 KiB) Viewed 4567 times
- Visualdistortion
- Breadboard Brother
Guts:
I wanna make it
I wanna make it wit chu
(again and again and again)
French... sorry
I wanna make it wit chu
(again and again and again)
French... sorry
- Hides-His-Eyes
- Tube Twister
Companded PT2399 delay with vactrol LFOing for 'warble'?
I assume it's a compander... Can't read it (the 8 pin that isn't the JRC)
I assume it's a compander... Can't read it (the 8 pin that isn't the JRC)
Testing, testing, won too fwee
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I don't think so....there's a 4580D and an OPA2304 from what I can tell. My guess is that the 4580 handles in/out stages and the other is for the LFO driving the Vactrol, maybe. Looks like a very well thought out design. I like the layout.
- Hides-His-Eyes
- Tube Twister
there we go then.
Apparently this pedal does some kind of envelope detection as well?
Apparently this pedal does some kind of envelope detection as well?
Testing, testing, won too fwee
- tuemmueh
- Solder Soldier
I'm interested, how you came to this asumption. I thought, like madbean and you in your further post, that one dual op-amp (most likely the OPA) would be for in-/output buffers and the JRC is used for lfo.Hides-His-Eyes wrote:there we go then.
Apparently this pedal does some kind of envelope detection as well?
- indyguitarist
- Resistor Ronker
Nope, no LFO in it.
- Hides-His-Eyes
- Tube Twister
Then how does the flutter work?indyguitarist wrote:Nope, no LFO in it.
Testing, testing, won too fwee
- culturejam
- Old Solderhand
Information
I'm guessing that's what the vactrol is for.Hides-His-Eyes wrote:Then how does the flutter work?indyguitarist wrote:Nope, no LFO in it.
- Jack Deville
- Resistor Ronker
Information
- Hides-His-Eyes
- Tube Twister
What's driving the vactrol if not an LFO?
Testing, testing, won too fwee
- culturejam
- Old Solderhand
Information
Again, I assume it's some sort of envelope follower setup. Like in an auto-wah, but surely setup a bit differently for the flutter application.Hides-His-Eyes wrote:What's driving the vactrol if not an LFO?
- indyguitarist
- Resistor Ronker
much, much simpler than what most of you are probably assuming... Jack knows I believe
- indyguitarist
- Resistor Ronker
ok, I can't take it. it's super easy. if picking harder makes it 'flutter' more and it's using a vactrol... how would you do that?
- Scruffie
- Opamp Operator
Input Clipping? I'll go and hang my head in shame now I can't guess if it's not an Envelope...
Edit: Meant Peak Detector there, not clipping really, so it's dependant on pick strength to drive it.
So the LED part makes the LDR control the Delay to make it flutter, anywhere close?
Edit: Meant Peak Detector there, not clipping really, so it's dependant on pick strength to drive it.
So the LED part makes the LDR control the Delay to make it flutter, anywhere close?
- Hides-His-Eyes
- Tube Twister
Hahahahaha I think I got it.
Feedback loop clipping on the vactrol, hence the LED!
Feedback loop clipping on the vactrol, hence the LED!
Testing, testing, won too fwee
- tuemmueh
- Solder Soldier
You mean the red led + vactrol-led as the clipping diodes in an op-amp feedbackloop and the vactrol-ldr is controling the modulation depth?! But there is no distorted sound. What am i missing ...?!
- Hides-His-Eyes
- Tube Twister
What's the typical input gain of an overdrive though, 100?tuemmueh wrote:You mean the red led + vactrol-led as the clipping diodes in an op-amp feedbackloop and the vactrol-ldr is controling the modulation depth?! But there is no distorted sound. What am i missing ...?!
Can't see that this would have an input gain anywhere near that. So maybe I wasn't right after all, maybe there's a seperate op-amp circuit for the clipping diodes.
Testing, testing, won too fwee