Quackers and LDR's and the Phozer

[strungout]

Oy.

I finally found some LDR's (like there was 3 left). They range from 1.5K to 20M. I wanted to make Tim E.'s Uglyface (great circuit!). Worked pretty good with my homemade "vactrol" (small headphone plug screwable plastic cover, glue and black paint), but I don't like the lack of control over the wah-ing itself. I'm looking into just using average daylight, and the density of my foot to mimic a wah pedal So, I got around to trying it on my "Intern" Quacky    instead of the tranny as Trasmogrifox had mentioned to me and put the ldr in the socket in the b and c pins. It's a little weak (used bare LDR and my hand to block the light from my desk lamp). So, I have a two questions if you guys wanna give it a go:

-with the LDR from the filter to ground, do I just get rid of everything between that and the LED at the output of the EF, or is there another way to hook it up and still have the attack and range pot be useable?

-does anyone know of any schematic of an auto-cycling wah, sorta like a phasor or flanger? But very simple.

Anyway, I have to go blow up some Counter-terrorists...or defuse a bomb...  :lol:

Ciao.

[dr]

....there's a thing at JD's site he calls a "Leslie Simulator",and when you open up the file,the schematic calls it "The Undulator"-I've built it and subbed a MPF102 for the fet and used a 2n390X for the trannys-it does what you are asking for......

[B Tremblay]

Check out the Phozer at runoffgroove.com

[strungout]

Thnx.

B temblay: I supposed a MPSA12 (all I have, and only one at that) would work ok for this?

dr: looks simple to build, tho I'm not confortable with stuff plugging into wall outlets yet, and I'm not sure about how to hook it up to work on a battery...

Ciao.

[B Tremblay]

I supposed a MPSA12 (all I have, and only one at that) would work ok for this?

Yes, it should be fine.  You may need to adjust the filter caps for a more wah-like sound.  Try the original Idiot Wah values as a starting point.

[Torchy]

Yup, just built a Phozer myself for part of a multi-pedal I'm building. Tried the Nurse Quacky first but much prefer the Phozer - aesy build, good sound. Nice one Mr. Tremblay

[strungout]

ok...this is kind of ridiculous and beyond me....

I built the Phozer, didn't work :x . I built the idiot wah, it worked . I built the EA trem LFO beside it and connected it, didnt work :evil: . Tapped the output straight from the LFO (where it connects the 680pf and .0068 caps) and it modulated my guitar signal like a tremolo :? . So, both work, but not together  :evil:  . The only way I got it working is by using an LED/LDR :roll: . Anyone take a guess as to what's the problem :?:  I'm really not getting this...  :cry:

I was looking forsomething able to go much slower, but this is what I was talking about Thnx.

Ciao.

[B Tremblay]

Unfortunately, slower speeds are a weak point of the Phozer.  Due to the sweep shape of the LFO, the wah effect cycles asymmetrically.  It doesn't sound like a wah pedal slowly rocked back and forth, rather a pedal left in the heel-down position for a bit - then briefly to toe-down - then back.

I had somewhat better results when using the Tremulus Lune LFO (at the suggestion of Constantin Necrasov), but the parts count increased quite a bit.  Once you reach that level of complexity for a faux-Phaser, a Phase 45 seems like a better choice.

Are you working with a breadboard or perfboard?

[strungout]

Right now, it's on my project board, but I perfboard everything once I'm fairly satistfied with it. It's cheap and once you get comfortable with it, it's pretty easy tho still time consuming. I've tried taking pictures to show my perfboard work here, but not enough resolution  on my cam :?

I tried different cap values for the cap "trio", as mentioned on the runoffgroove phozer page. I'm up to 33uf, quite slow. When I perfoboard it, I plan on having a switch between the original LFO and this one with 33uf caps. Mind you, I was also trying to find another, tighter, LFO

I had checked out some phasors a while ago when I started doing stomboxes, but that MXR phase 45/90 seems more doable now, hehe. I still wanna play around with the phozer tho.

I'm still not getting why the LFO won't modulate the wah without the LDR...

Ciao.

[strungout]

Well, I gave up on this thing about the LFO not working with the wah... Went back to 22uf for the cap trio in the LFO. Well, it's more or less a done deal, I just have to rebuild it when I can spare some in and out jacks...  :x


I tried the Tremulus Lune LFO too, didn't really like it. Too many knobs, even as a tremolo itself, I like my pulsar better. Hmm, maybe I should try the pulsar LFO in it....

Ciao.