G.D.M. Wah-Wah

Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...
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borislavgajic
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Post by borislavgajic »

Better pictures soon.
it seems to be made in Italy, Recanati ........
can somebody tell me more please?

thanks

Boris
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sinner
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Post by sinner »

Whata sweetie! Thanks :thumbsup

Two inductors?
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borislavgajic
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Post by borislavgajic »

sinner wrote:Whata sweetie! Thanks :thumbsup

Two inductors?
thanks Sinner :)

no ...I think only one inductor....it is blury picture....tommorow I will post better guts
here is only info on net.....thanks Bart :thumbsup
http://www.effectsdatabase.com/model/gdm/wahwah

No other wah have PCB layout like this one so I guess it is G.D.M.

I hope to find more info about it......come on italian brothers :block:

boris
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Cannibal
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Post by Cannibal »

the enclosure looks a lot like the shin-ei wah. I have a friend who has a shin-ei, i'm probably going to take some photo to see if the guts matches too.
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Post by nightraven »

Cannibal wrote:the enclosure looks a lot like the shin-ei wah. I have a friend who has a shin-ei, i'm probably going to take some photo to see if the guts matches too.
yeah that was my first thought as well with that colour and shape, as well as the rings around the jack sockets and the kind of badge at the front. the Shin-ei stuff was folded metal though and this is cast metal. different PCB too. strange that somebody would copy that crappy cheap aesthetic from the Japanese knock-offs :lol:
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Post by edkoppel »

I actually reminds me of the Hohner Wah.
http://www.effectsdatabase.com/model/ho ... nei/wahwah

which, I am pretty sure, was an Electro Harmonix clone.
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Post by edkoppel »

oh, i meant this one:
https://www.ebay.com/itm/Vintage-Hohner ... 1067261156
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borislavgajic
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Dipthonizer,seekwah,Talkingpedal,morleywha
...soulpreacher,dynacomp,compulator
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...CE-2,ibanez fL301,EH theCloneTheory
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Post by borislavgajic »

Shin-ei stuff was folded metal though and this is cast metal. different PCB too.
inductor is little transformer in Shin-ei....here is hallo. It is not herer yet. :hmmm:
Not a Hohner....enclosure is like G.D.M. but I can not find any info about Eko made pedals......

cheers
Boris
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borislavgajic
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Dipthonizer,seekwah,Talkingpedal,morleywha
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...CE-2,ibanez fL301,EH theCloneTheory
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Post by borislavgajic »

:thumbsup
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Post by sinner »

weird values... Shall I finish the schemo, or you're on it?

Any possibility for rest greenie values, as well as trannie codes?
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borislavgajic
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Dipthonizer,seekwah,Talkingpedal,morleywha
...soulpreacher,dynacomp,compulator
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...CE-2,ibanez fL301,EH theCloneTheory
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Post by borislavgajic »

:hmmm: I will do it ......it is not standard crybaby schem .....!
sound is really nice to me....
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borislavgajic
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Dipthonizer,seekwah,Talkingpedal,morleywha
...soulpreacher,dynacomp,compulator
...buzzaround,fuzzfactory,screwdriver,sho,superdouper,St-9,RogerMayer octavia,Tychobrahe octavia,paralelluniverse,string damper,slowgear
...CE-2,ibanez fL301,EH theCloneTheory
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Post by borislavgajic »

here is schematic........some parts are different.....there is 560K from 9V to base of transistor 2... 470K resistor is missing....other one is replaced with 270K resistor....

that is all ....
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borislavgajic
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Dipthonizer,seekwah,Talkingpedal,morleywha
...soulpreacher,dynacomp,compulator
...buzzaround,fuzzfactory,screwdriver,sho,superdouper,St-9,RogerMayer octavia,Tychobrahe octavia,paralelluniverse,string damper,slowgear
...CE-2,ibanez fL301,EH theCloneTheory
EHX bassmicrosynth,EHX EnglishMuffin,Tube Phaser,springtubereverb ,greyDOD,FulldriveII mosfet,OCD,VOX repeat percussion,RingStinger,Meatball,12stage phaser....
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Post by borislavgajic »

And now you can make one :thumbsup

cheers

Boris
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Post by sinner »

Double cheers Boris. I was hoping for something more twisted :( It's just a VOX variation again :(
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borislavgajic
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Dipthonizer,seekwah,Talkingpedal,morleywha
...soulpreacher,dynacomp,compulator
...buzzaround,fuzzfactory,screwdriver,sho,superdouper,St-9,RogerMayer octavia,Tychobrahe octavia,paralelluniverse,string damper,slowgear
...CE-2,ibanez fL301,EH theCloneTheory
EHX bassmicrosynth,EHX EnglishMuffin,Tube Phaser,springtubereverb ,greyDOD,FulldriveII mosfet,OCD,VOX repeat percussion,RingStinger,Meatball,12stage phaser....
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Post by borislavgajic »

sinner wrote:Double cheers Boris. I was hoping for something more twisted :( It's just a VOX variation again :(
after all it is from Italy :D .....so Vox it is but not all the way :wink: ......it have flatter response .....will try to make video demmo.....

cheers

Boris
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