Manual Flanger???

[YouAre]

I've been wanting to build a "manual flanger," a type of pedal where instead of the oscillations being automatic like on a regular flange pedal, i want to control it via expression pedal, like a wah. Is this possible to retrofit onto a commercial flange pedal like a dod fx75c or a boss BF2?? I'm guessing i'd have to disable an LFO and wire in a pot or an LDR/LED setup. Or would i have to build something from scratch.

anyone ever done this before?

~Murad

[QSQCaito]

You could try the search, in the forum and in google.
I don't know if anyone have heard this, but it's my first time, and it'd be really cool.

[Seljer]

I believe the "manual" control on flangers like the ADA and MXR (and the Boss BF2 too I believe) allows you to do just that, just set the width of the LFO to zero

[puretube]

http://filters.muziq.be/type/flanger/filtermatrix

[DiscoFreq]

Thanks Ton, I added a few more to that page (it's a forgotten "tag" )

I think you can do that with most flangers, most of them have a "manual" or "delay time knob".

A filter matrix has depth = 0 and speed = 0, in case you still hear a sweep you probably can just add a switch to them (both?) to turn them off completely
(that's what I want to do on some Kod flangers as I have at least 6 or 7 of those )

[Mark Hammer]

http://hammer.ampage.org/files/Anderflange1.PDF

[puretube]

ooops, almost forgot it: the E-H Flanger Haox got 2 "manuable" delays...  

[Mark Hammer]

These ones have manual delay sweep too:

http://hammer.ampage.org/files/PAiA_Phlanger.PDF
http://hammer.ampage.org/files/Hyperflange.PDF
http://hammer.ampage.org/files/BOSS_BF-1.pdf
http://hammer.ampage.org/files/INFLSCHM.gif

as does the A/DA, the Boss BF-2, and the Tychobrahe Pedal Flanger.

My sense is that all of the various commercially available flangers, past and present, vary in terms of how much of the delay range is covered by manual sweep.  One of the things you will often see is that the Depth control is wired up as a sort of "modulation source pan" control, that dictates how much the manual sweep or LFO will dominate.  Under those circumstances, I suspect the manual pot is never able to cover the full delay range of clocking frequencies attainable in the circuit.  It's a bit like a wah pot, and the way it never really covers the entire rotation of the pot.