Musitronics - Mutron Volume Wah (1979) guts

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 »

:idea: :arrow: :| :mrgreen: :scratch: :hmmm: :applause:

thank you Dr. Molly

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Dr. Molly
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Post by Dr. Molly »

Hi

Could something like this replace the mains transformer if one would build a workalike?

http://www.ti.com/lit/gpn/lt1054

/H

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borislavgajic
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Completed builds: ...script phase90,ETI phaser,Ross phaser,mutronC200,vox wah,WH10,FW-3,mutronIII,DrQuack,Penfoldautowah,Tubezipper,
Dipthonizer,seekwah,Talkingpedal,morleywha
...soulpreacher,dynacomp,compulator
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...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 »

http://www.tonepad.com/getFile.asp?id=96

try this vith MAX1044....or I can post schem vith CD4049 doing same voltage doubling
I did it with mutronIII....worked nice :thumbsup

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borislavgajic
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Completed builds: ...script phase90,ETI phaser,Ross phaser,mutronC200,vox wah,WH10,FW-3,mutronIII,DrQuack,Penfoldautowah,Tubezipper,
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 »

please could you check values of ceramic capacitors in your wah?

thank you

boris

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Dr. Molly
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Post by Dr. Molly »

Hi

C2= 30p
C8,C9=0.01uF
Cx(between pin 6 and 7 on IC3)=10p

Don't have alot of experience with making voltage doublers. Please post the schem. I'll give it a try.

/H

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borislavgajic
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Completed builds: ...script phase90,ETI phaser,Ross phaser,mutronC200,vox wah,WH10,FW-3,mutronIII,DrQuack,Penfoldautowah,Tubezipper,
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 »

I stold it from this octaver schematic........http://hammer.ampage.org/files/SuperOctaver.ZIP

it is down to the left....DC/DC converter

........and thanks for cap values.....and everything else man :thumbsup
Attachments
voltage.pdf
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12 volt doubler.jpg

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Dr. Molly
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Post by Dr. Molly »

Hi

Thanks!!

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borislavgajic
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Completed builds: ...script phase90,ETI phaser,Ross phaser,mutronC200,vox wah,WH10,FW-3,mutronIII,DrQuack,Penfoldautowah,Tubezipper,
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 »

I made this layout.....transformer,fuse,traces that conect two status led-s and offboard wiring is missing....
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mutron wah vol.LAY].pdf
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borislavgajic
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Posts: 1542
Joined: 27 Feb 2008, 14:23
Completed builds: ...script phase90,ETI phaser,Ross phaser,mutronC200,vox wah,WH10,FW-3,mutronIII,DrQuack,Penfoldautowah,Tubezipper,
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....
Location: Sombor , Serbia
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Post by borislavgajic »

so....on the right side of optical controller there are two LDR-s one for wah and other for VOL......that is clear

I do not understand left side... :scratch: there is LED shining more or less....that depends of how much light comes to third LDR that is in the same package with LED.......it controls linearity of light emision...?

ok ...I guess when I clone this ,things will be much clearer....and I'm making it with proximity control....so LED+LDR on the left side are not needed :thumbsup

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chicago_mike
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Post by chicago_mike »

I never saw this one till now...

I think I just found something my morley wah can house.. :)
Skyline FX 2013

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Zurdo
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Post by Zurdo »

hi, I'm new here.

I have one of those MuTron Volume-Wah pedals. I use it in my pedalboard. I even have the original box, user manual, and everything that came with it when I bought it in 1979. I was a student at the Guitar Institute of Technology in Hollywood back then. (yes, I graduated!).

I don't remember if it came with Schematics but I will check the box and let you know.

Yes you can use both wah wah and volume at the same time, both LEDs ON. I don't see much use for that. The wah effect is very W I D E, a lot wider than a Vox wah wah. It also has an adjustment pot on the side that lets you boost the pedal's gain.

Overall it has been 100% reliable, zero problems since 1979, that's 30 good years of service.
Compared to my 1967 Vox wah wah which went to wah wah heaven in 3 years, can't complain. All my effects are 1975-on. 99% MXR, the originals. They all work fine.

The moral here? treat your equipment with care, it will last you a lifetime.

Zurdo

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Fuzzer
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Post by Fuzzer »

So true, Lefty.
The Freestompboxes Forum search function is soo great, use the search function..., the S E A R C H function.

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Zurdo
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Post by Zurdo »

someone finally figured what zurdo means! :applause: :D

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Fuzzer
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Post by Fuzzer »

JAJA, well, I actually am a spanish speaker and also are 'ambidiestro'. No credit to me for that :thumbsup

Welcome and enjoy.
The Freestompboxes Forum search function is soo great, use the search function..., the S E A R C H function.

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Zurdo
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Post by Zurdo »

well I'll be, ambidiestro ehh? or shall we say, Ambidiestro Bilingue. :lol:

Pregunta: why doesn't the "Log Me automatically on each visit" work?
I have to log in every time I visit, even if I check the box.
:whappen:

Pleased to meet you.

Zurdo

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OC26
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Post by OC26 »

¡Bienvenido, Zurdo!
Pregunta: why doesn't the "Log Me automatically on each visit" work?
It works fine for me... Perhaps your IP is not "fija" as we say in Spain (?).

Enjoy,

OC26

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Zurdo
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Post by Zurdo »

Gracias gente...

ahh España, but the word "fija' is not known to me. What does it mean in Spain?
(sorry for the dumb questions).

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Post by Fuzzer »

Fija is fixed, or constant, it works well for me too.
The Freestompboxes Forum search function is soo great, use the search function..., the S E A R C H function.

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Zurdo
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Post by Zurdo »

ohhh, "Fijo", "Fijado", "permanente/constante", as in "coneccion fija". Well, that's a lot to ask from our local ISP. they are still "working on it".

got it.

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Zurdo
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Post by Zurdo »

here's a pic of my Pedalboard showing my 1979 MuTron Volume-Wah
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pedalboard.JPG
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