picked up the guts for an 80's crybaby on ebay, now I need help!

[runmikeyrun]

They haven't come yet, but I haven't done anything with wah pedals to date.  I want to use it with bass purely for solos/interludes.  What can I do for better low end response?  The usual input/output/coupling cap increases?  I don't know if I need to change the freq sweep necessarily, that's something I'll have to hear first. 

I did some searches and nothing really came up.  Any quick thoughts or ideas would be appreciated.  Here's pics, if anyone can confirm which era of crybaby we're dealing with that'd be great.  I'm not gonna cry if it's not 80s, I am just glad I got a cheap wah circuit.

[paulyy]

LOL! I was watching this on ebay but decided to pass on it. If you want more low end. I would start with the 470ohms resister. Try a 1k trim pot. This should help with morelow end response. Raising the 1.5k will help as well. I also like raising the .01 cap near the inductertor .12 or .15. Not sure if this is what you are asking for but thats the fist thing I would do. I can't tell you the date but I think this layout is the first year they added the ac adapter. Late 80's early 90's I'm guessing.

[runmikeyrun]

awesome, thanks so much Paulyy!  If things don't work out for me you have first dibs lol.

[joegagan]

that is a pretty short-lived iteration, first era of power supply jacks, yet retaining the footprint of the 70/80s thomas board layout. there was another version just prior that had the same board with no power jack. around this time, dunlop made revisions to the CB shell mold to make the double pad to include the space for power jack and or dual outs on the input side.

weirdest, worst sounding inductor of any CB era i have ever heard. other parts will probably sound fine. i could not even a get a mh readin on those inductors on my meter! i would strongly recommend getting a real man's inductor before changing any other parts. i almost never say this, but i strongly suspect your lack of low end could actually be the inductor. shoot me your address in a pm, i will send you a nice inductor.

if the pot has not been changed, that will give you the year, pretty close.should say something 8713 , 9032, etc. in your pic, the pot still soldered to the harness is actually a standard hotpotz1 spec, there was an era between late 80s where both the shaft and the bushing are shorter than other eras.

the other pot in the pic looks late model chinese hotpot knockoff.

[paulyy]

awesome, thanks so much Paulyy!  If things don't work out for me you have first dibs lol.

No problem and thanks for that offer.  When you get it. Can you see what type of trannie's it has. I'm guessing it has the 5117 trannie's. Just wondering.

[bluedreamin]

Yes, these typically came with 5117's (ECB pinout) but I have had a couple that used A18's ! Dunlop just kept screwing with things and still do !! I concur , this IS the WORST inductor ever made for sure ! Always around 200ohms (or MORE) and 300~400 mH at the highest .
The pots are both either Clarostats or A-B's and the green caps are so tall the cover plate hits them so you must bend them over .
Get rid of the inductor and it'll be a good platform for mods ! 

[joegagan]

ha, that is why i couldn't get a readin, i never set the ohm setting above 200 for inductors! ha./

for some reason, i couldn't get an mh readin either, but i have to admit i wasn't gonna dick with it very long. sometimes my inductance setting is sporadic.

the pots say claro or allen bradley, but were made in the same mexico factory, as claro bought out AB's pot making portion around this time.

[Gus]

I reworked a  friends crybaby wha with an inductor and PCB that looked like the pictures.  Now funny the thing is it was one of the best sounding whas my friend and others heard.  This was mid late 90's IIRC when I did the work.
IIRC I changed the film caps caps to Pan Vs and increased the sweep cap value and I think I ended up with 100k across the coil I used a 10uf electro.   I did not measure the inductance.  I left the stock transistors IIRC they were MPSA18s.  I think the emitter resistor might have been a 470ohm.  Increasing the sweep cap value made the biggest difference.

I don't have access to that wha anymore.  I wish I did to measure the values again.

So maybe some of the the inductors are good? bluedreamin and Joe have posted inductor values.  My friends wha inductor was wound on a "dogbone" shape core with a shrink wrap cover.

[joegagan]

gus, i have seen those inductors as well, but i don't recall how they sound. this is different. it is like a metallic dark grey cylinder, no shrink wrap. the board had holes very close together to accomadate this inductor, so apparently dunlop was committed, for a while.

ken fischer told me once a story about calling jim dunlop out for the wrong Q of the dunlop CBs ( they had known each other going back to the 60s)

ken said " jim, you know why your wahs sound like shit?, the inductors have the wrong Q", to which jim replied " yeah but these inductors are 40 cents each and the others are a dollar40. "  ken told me this in 2002, so i assume their conversation was from when these little crap inductors were in use.

[runmikeyrun]

Thanks for the responses!  Looks like I have a little work to do, but that's just the way I like it   Joe I'll PM you, thanks so much!!