a manual flanger

[sir juice]

i've recently found myself with an MXR flanger and a broken vox wah-wah. It's my plan to rip out all the wires from the old vox as I already have a wah and wire the flanger into the vox box so I can control the rate manually. The controls on the flanger are Manual, width, speed and regen. I have no problem drilling into the side of the wah to put the pots in.

I assume that I won't need the speed or regen pots anymore, so what should I do with them now? And what wire should I wire up to the pot attached to the expression pedal on the wah? Any help will be hugely appreciated.

[sonicvi]

You sure you have enough experience in electronics to tackle this yourself?

[bongomania]

Here's a manual flanger!



Sorry. You will still need the regen pot, unless you want to replace it with a little interior trimpot, or measure the resistance of the regen pot at your favorite setting and replace it with a resistor of that value.

What do you mean by "what wire should you wire up etc.?" That part isn't clear.

[JanusZarate]

Juice, wire it up just like like the pot on the wah is wired. If you do it backwards, you'll notice - your sweep will be in reverse.

EDIT: And yeah, you'll need to keep that Regen pot - it's just as key to your tone as the rest. If you won't be tweaking it much at all, then replacing it with a trimpot of equal value isn't a bad idea - it'll save space inside, and you won't have to drill a hole for it.

[sir juice]

what i mean is should i just get rid of the rate control and just wire up the wires from the speed control to the expression pedals pot

[JanusZarate]

Originally Posted by sir juice

what i mean is should i just get rid of the rate control and just wire up the wires from the speed control to the expression pedals pot

Yeah, that's fine as long as the value of the pedal's pot is similar. Otherwise, you'll get a different result for your range of control, I believe.

[sir juice]

wow, never though it would be that simple

[JanusZarate]

Originally Posted by sir juice

wow, never though it would be that simple

Well, with the way you'll be using that Vox wah pedal, it's the exact same thing as turning the knob back and forth with your hand. You'll just use your foot instead.

Actually, the tricky part will be the switch for the pedal...

[niftydog]

Wait, when you say "manual" do you mean you want full control? Like, if you stop moving the pedal, the sweep stops?

If yes, then it's gonna take a bit more than just re-wiring pots.

If you simply replace the speed pot with the exp. pedal then all you will be able to do is adjust the rate of the oscillator.

[JanusZarate]

I don't think it's what he meant, but if that really happens to be the case, he may want to consider dismantling an old EHX Electric Mistress instead. Although... its circuit is probably too big to transplant. Maybe give the Mistress an expression pedal input?

Ah, that reminds me... if there's one thing I wish the new Stereo Electric Mistress had, it'd be an expression pedal input to control the Filter Matrix! That's a true manual flanger!

Someone should build that! It'd be like the Dunlop Variphase, but not crappy!

[Sir Edward V]

Originally Posted by MysticBoo

I don't think it's what he meant, but if that really happens to be the case, he may want to consider dismantling an old EHX Electric Mistress instead. Although... its circuit is probably too big to transplant. Maybe give the Mistress an expression pedal input?

Ah, that reminds me... if there's one thing I wish the new Stereo Electric Mistress had, it'd be an expression pedal input to control the Filter Matrix! That's a true manual flanger!

Someone should build that! It'd be like the Dunlop Variphase, but not crappy!

I'm sure its possible...

[JanusZarate]

Don't tease me!

[sonicvi]

The MXR's manual knob lets you sweep the filter manually when the depth knob is off I believe.

[niftydog]

Ah, see that's different to how the manual knob on a BF-2 works. From memory it alters the range of delay times that the oscillator works within.

[sir juice]

well, I did want to control the the modulations with my foot as in niftydog's example, so what specifically would I have to do with the knobs? It seems like it would be possible with the manual knob as it is but how would I actually do it?

[KarateKid25]

Originally Posted by niftydog

Ah, see that's different to how the manual knob on a BF-2 works. From memory it alters the range of delay times that the oscillator works within.

Well, saw my legs off and call me stumpy... I have never been able to work out quite what the manual knob does on my BF-2

[niftydog]

Originally Posted by sir juice

...how would I actually do it?

If it is as sonicvi says then it's just a matter of replacing the "manual" pot with the same value pot in an expression pedal. Remove the pot, install a new stereo jack socket, wire it into where the pot was wired, wire up the exp pedal appropriately, and bob's my uncle!

[trevcda]

A true manual flanger? Try this:

http://www.adadepot.com/adagear/gear...DA-Flanger.htm

"IF" you can find one, this has got a control voltage input on it for a CV pedal that allows you to stop the sweep where you want. Think of the guitar into on Van Halen's Unchained. Anyway look around this link. It's got a schematic and probably any other info you might want. And if you build one, build me one too.

[sonicvi]

Originally Posted by niftydog

If it is as sonicvi says then it's just a matter of replacing the "manual" pot with the same value pot in an expression pedal. Remove the pot, install a new stereo jack socket, wire it into where the pot was wired, wire up the exp pedal appropriately, and bob's my uncle!

I checked to make sure I remembered correctly, from Dunlop's site:
"Manual knob selects frequency center of effect when auto-sweep is disengaged Width knob at zero disengages auto-sweep"

[JanusZarate]

Wow. That's like the Filter Matrix mode of the Electric Mistress, then.

But how does it sound?