very general wah wah tips

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Re: very general wah wah tips

Postby David B » Wed May 14, 2014 11:07 am

Cool but a clean clip would be helpful, lotta vibes out there..
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Re: very general wah wah tips

Postby dai h. » Wed May 14, 2014 8:25 pm

(I'm not familiar enough with them to have a worthwhile opinion re: the clean sound)

looks like an interesting technical feat, but I wonder if the people who buy vibes would go for those?

FWIW (some of the comments in Japanese) :

(Fumio Mieda) says:

"(without defining things in the way of better or worse) some of the clones sound a bit different. A bit one dimensional."
"..the oldest (official?) schemo has an error..but on the later ones this is corrected" "[some stuff about not being able to use photocells due to safety concerns (probably ROHS)], so to emulate the operation the resulting circuity turned out to be quite complicated...part count increased tenfold or so..[can't quite make this out but sounds like] we connected a sequencer as an experiment and this ended up in the product... the real judge (of the product) will be the customer... please (use it) to create your own sound..imagine your own music."
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Re: very general wah wah tips

Postby dai h. » Tue Mar 17, 2015 7:38 am

interesting post from (I think) Gus S. :

http://prorecordingworkshop.lefora.com/ ... y-47014450

(maybe this bit especially) :

More gain at the first stage more distortion and the wha control sweeps more because of more gain at the same setting, you can then reduce the gain with the input series resistor (from "gustav")
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Re: very general wah wah tips

Postby David B » Wed Mar 18, 2015 12:46 pm

This is probably what I experienced with tranny swaps on my wha ?
I haven't done much with inductors but I could hear some difference between a TDK verses stack of dimes.
100% agree on the pot being very important, I went through a pile of them & all were very different.
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Re: very general wah wah tips

Postby dai h. » Thu Mar 19, 2015 6:05 am

it'd be interesting to be able to see all the various wah pot taper differences graphed out like some people have done with guitar pots. Also, wonder what taper it is "technically supposed to be"(such as "S" or "W" taper--sometimes also known as "G"??). The economics might be a huge factor (the maker can't or won't pay for a special taper, and the buyer might consider one (priced accordingly) to be "too expensive").

IME, the Hot Potz (old Allen-Bradley one) seems not "stretched out" enough. Also have (one decribed as) "Super D"(IIRC--"D" seems to usually be an accentuated log/audio taper) which seemed good, and I've also used some NOS sealed expensive-looking (Luton??) which was kind of large-bodied(had to remove some of the die cast around the pot area in a GCB body to fit) which I liked, but have no idea what taper that was (oh, also IIRC there were no stoppers, rotating 360 deg., and maybe that was part of why I liked it?). Unfortunately it seemed to go bad (scratchy) relatively quickly and I have no idea if it was just not cut out for multiple rotations for if perhaps I screwed it up drilling it for a gear stopper pin (my metalworking skills are nearly non-existent). I also couldn't figure out a way to dismantle it either (sealed super robust construction).
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Re: very general wah wah tips

Postby David B » Thu Mar 19, 2015 10:56 am

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Re: very general wah wah tips

Postby dai h. » Fri Mar 20, 2015 5:51 am

cool. Thanks David! I vaguely recall seeing the first "wah pot mapping" thread (at aron's BBS), but have never seen the other two.

edit:

okay, so staring at Joe Gagan's taper comparison chart (post #7), the abrupt kink on the Hot Potz 1 (right hand side of chart, so bass side) seems to be the part I didn't like about that one. Interesting that many of the other boutique types seem to be collectively similar, and the Hot Potz 2 is the only one coming close to the "thom int '77, clarostat" curve (not a popular taper?).
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Re: very general wah wah tips

Postby David B » Fri Mar 20, 2015 10:37 am

Yes the ICAR type pots do seem to be very similar in taper but not all sound the same to me.
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Re: very general wah wah tips

Postby dai h. » Sat Mar 21, 2015 3:13 am

wonder what part the physical setting (of the gear) and pot tolerance (20%?) could be playing in the perceived pot turn change. Personally I'd typcially try to set for the most range, but I vaguely recall other people posting that they didn't set the gears for most treble, so maybe a bit of difference (from personal preference) there also.
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Re: very general wah wah tips

Postby dai h. » Sun Mar 22, 2015 6:14 am

saw something interesting over on metroamp bbs:

http://forum.metroamp.com/viewtopic.php ... 9&start=60

apparently there is a Japanese guy who has posted a lot of authentic sounding Hendrix video clips:

https://www.youtube.com/user/fuzzfaceexp/videos

(one of the wah vids ("Burning of the Midnight Lamp") :

https://www.youtube.com/watch?v=Ns3RbEBak5o

(from the descriptions and his blog (all in Japanese) :

http://blogs.yahoo.co.jp/fuzzface66

he uses some "wah2" (I think I mentioned something about this modder some time ago?) modded wahs.)

(kind of funny) He mentions a bit about this video setup here:

http://blogs.yahoo.co.jp/fuzzface66/34211727.html

and apparently, he is using a Champ XD through Celestion green backs :lol: (Apparently due to volume issues in a residential situation. He doesn't mention the specific cab but since he mentions something about a Marshall 1959 elsewhere, it might be a 4x12)... (Wonder what tone cap obsessives will think of that?)

mentions here (back in 2008) :

http://blogs.yahoo.co.jp/fuzzface66/12493301.html

that he likes the Black Top 100k.
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Re: very general wah wah tips

Postby David B » Sun Mar 22, 2015 1:37 pm

Ha so maybe it is in the hands eh :wink:

I haven't tried the Black Top 100k yet but its reported to sound good.
The Castledine ICAR pot has been in my wah for some time now & I really like it's taper and sound the best....
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Re: very general wah wah tips

Postby dai h. » Tue Mar 24, 2015 6:31 am

stumbled on a (Snarling Dogs--I think) Mold Spore wah schemo:

http://s214.photobucket.com/user/digi2t ... 1.jpg.html

(somebody's YouTube clip) :

https://www.youtube.com/watch?v=TL7UFvRPBPo

(hmm...so I guess not super new--as far as the schemo on the interwebs) :

http://www.aronnelson.com/gallery/main. ... ewsIndex=1

Interesting that the wah signal path goes through an FET gain stage (with adjustable boost) before the output (otherwise it looks relatively standard). Plus there is a ring modulator(?) circuit path on the side.

(re: switched freq cap on schematic) :

if "White Room" = (332+223) = 25.5nF , then
"VooDoo" should = 10n
"Shaft" = 4n7

(thread link) :

http://www.diystompboxes.com/smfforum/i ... ic=31516.0
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Re: very general wah wah tips

Postby dai h. » Sat Jul 04, 2015 7:34 am

some new videos from "fuzzfaceexp" for Fuzz Face/wah/Jimi aficionados:

https://www.youtube.com/user/fuzzfaceexp/videos
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Re: very general wah wah tips

Postby David B » Sat Jul 04, 2015 3:11 pm

Lotta clips, that 1967 Clyde sounds nice :D

70's Fuzz Face with da BC108C's don't sound too bad, still have to try the ones I found last year
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Re: very general wah wah tips

Postby dai h. » Tue Sep 22, 2015 10:26 am

FWIW, the "fuzzfaceexp" guy has some video updates:

https://www.youtube.com/user/fuzzfaceexp/videos

(also, FWIW) I read a bit of his yahoo japan blog page, and he seems to think there is something to be exploited with the ceramic caps in the Univibe circuit.
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