Vox - Wah Wah Distortion [schematic]
- Rocket Roll
- Solder Soldier
Information
VOX Wah-Wah Distortion on DiscoFreq: http://www.effectsdatabase.com/model/vo ... distortion
Any idea which kind of inductor, what pots, what kind of integrated fuzz and where it was built?
Transistors: 2xBC209C and 2xFMPS5172.
Any idea which kind of inductor, what pots, what kind of integrated fuzz and where it was built?
Transistors: 2xBC209C and 2xFMPS5172.
- Attachments
-
- VOX (5).JPG (63.25 KiB) Viewed 3319 times
-
- VOX (4).JPG (50.44 KiB) Viewed 3317 times
-
- VOX (3).JPG (38.93 KiB) Viewed 3316 times
-
- VOX (2).JPG (45.34 KiB) Viewed 3317 times
-
- VOX (1).JPG (42.68 KiB) Viewed 3316 times
- Rocket Roll
- Solder Soldier
Information
Some more gutshots:
- Attachments
-
- VOX (14).JPG (40.54 KiB) Viewed 3318 times
-
- VOX (12).JPG (46.04 KiB) Viewed 3318 times
-
- VOX (11).JPG (57.98 KiB) Viewed 3316 times
-
- VOX (9).JPG (43.43 KiB) Viewed 3318 times
-
- VOX (7).JPG (59.94 KiB) Viewed 3316 times
- Rocket Roll
- Solder Soldier
Information
...and some more:
- Attachments
-
- VOX (17).JPG (50.69 KiB) Viewed 3316 times
-
- VOX (16).JPG (39.59 KiB) Viewed 3316 times
-
- VOX (15).JPG (46.38 KiB) Viewed 3316 times
- Paul Marossy
- Breadboard Brother
Information
Huh, I've never seen one of those. The inductor doesn't look like any I've seen before.
Can you draw up a schematic for it? That's probably the only way anyone is going to determine what the fuzz section looks like, and if it is original or a derivative of something else.
Can you draw up a schematic for it? That's probably the only way anyone is going to determine what the fuzz section looks like, and if it is original or a derivative of something else.
- lolbou
- Old Solderhand
I guess it's a fairly basic inductor with a green plastic cover on it. I guess that removing the nut on top of it would let the green plastic come free, and it would look like this (on the right):
- Are you a mod or a rocker?
- Uh, no, I'm a mocker.
- Uh, no, I'm a mocker.
- Paul Marossy
- Breadboard Brother
Information
- ik6gpy
- Breadboard Brother
That is probably an italian pedal. I had a Moreschi Wah-Fuzz (nothing special) that had the same enclosure and the same inductor of your Vox. Bc209's are european trannies, so my guess is probably right.
- Paul Marossy
- Breadboard Brother
Information
My first thought was that it is a Italian Jen made product. But on regular wah pedals, that is usually clearly marked...ik6gpy wrote:That is probably an italian pedal. I had a Moreschi Wah-Fuzz (nothing special) that had the same enclosure and the same inductor of your Vox. Bc209's are european trannies, so my guess is probably right.
- Rocket Roll
- Solder Soldier
Information
I found that it looks surprisingly similar to Silversound SE-20 Whau-Whau Distortion - same type of build, I'd say even the same factory.
Here's the schematics and some pics of the SE-20: http://www.fetishguitars.com/mrt/silversound/jean.html
Here's the schematics and some pics of the SE-20: http://www.fetishguitars.com/mrt/silversound/jean.html
- Paul Marossy
- Breadboard Brother
Information
Yeah, the two look very similar.Rocket Roll wrote:I found that it looks surprisingly similar to Silversound SE-20 Whau-Whau Distortion - same type of build, I'd say even the same factory.
Here's the schematics and some pics of the SE-20: http://www.fetishguitars.com/mrt/silversound/jean.html
- ik6gpy
- Breadboard Brother
Here it is: http://www.effectsdatabase.com/model/cosmosound/cse3
It was made by the old italian Cosmosound factory. It's exactly the same pedal of yours.
It was made by the old italian Cosmosound factory. It's exactly the same pedal of yours.
- Paul Marossy
- Breadboard Brother
Information
Looks like a dead ringer!ik6gpy wrote:Here it is: http://www.effectsdatabase.com/model/cosmosound/cse3
It was made by the old italian Cosmosound factory. It's exactly the same pedal of yours.
- Rocket Roll
- Solder Soldier
Information
Yep, that's the one!
Do you think it's possible for it to be a... what's the word... a forgery? "Vintage fogery", but still a forgery? Not an official VOX product? Something that was made with a VOX logo in order to boost the sales?
Do you think it's possible for it to be a... what's the word... a forgery? "Vintage fogery", but still a forgery? Not an official VOX product? Something that was made with a VOX logo in order to boost the sales?
- DiscoFreq
- Resistor Ronker
Information
I have 2 of these: 1 Vox, 1 Cosmosound
EffectsDatabase: http://www.effectsdatabase.com
22000 pedals, 4000 brands, 350 brand interviews
NAMM 2016: http://fxdb.org/namm
22000 pedals, 4000 brands, 350 brand interviews
NAMM 2016: http://fxdb.org/namm
- Rocket Roll
- Solder Soldier
Information
- Rocket Roll
- Solder Soldier
Information
- Rocket Roll
- Solder Soldier
Information
...and PCB.
I like this fuzz. For me, the best vintage Si Fuzz Face that I have ever tried. Cleans very well (extremely well for a Si FF), has a great wall of thick but very musical fuzz, "sharpens" the guitar nicely when you roll off the pickup volume.
As far as I can tell, the fuzz part uses two MPS5172 transistors, and the wah uses two BC209C transistors. It stands to reason, since MPS5172's should have lower hFE (from 150 upwards). However, not a lot of silicone Fuzz Faces use them.
The only problem? A decent amount of hiss. Wouldn't know if that has something to do with the layout, this particular unit or a part that has "drifted".
I like this fuzz. For me, the best vintage Si Fuzz Face that I have ever tried. Cleans very well (extremely well for a Si FF), has a great wall of thick but very musical fuzz, "sharpens" the guitar nicely when you roll off the pickup volume.
As far as I can tell, the fuzz part uses two MPS5172 transistors, and the wah uses two BC209C transistors. It stands to reason, since MPS5172's should have lower hFE (from 150 upwards). However, not a lot of silicone Fuzz Faces use them.
The only problem? A decent amount of hiss. Wouldn't know if that has something to do with the layout, this particular unit or a part that has "drifted".
- Rocket Roll
- Solder Soldier
Information
So, here we have the fuzz part of the circuit (minus Volume and Fuzz pots and 10uF capacitor mounted on the Fuzz pot), and the schematic. I have modified the Cosmosound Distortion Whau Repeat schematic that you can find on the Effectsdatabase (http://files.effectsdatabase.com/docs/s ... ematic.gif). The values are mostly OK, but the author of that one had a different unit or made a mistake: R2 is 27K and R5 is 2K7 in the VOX, as all of the pictures clearly show.
I cannot check the potentiometers' value, but I expect no problems there.
So, not your typical silicone Fuzz Face, but a variant.
I cannot check the potentiometers' value, but I expect no problems there.
So, not your typical silicone Fuzz Face, but a variant.
- ljn
- Solder Soldier
Information
- Posts: 222
- Joined: 29 Nov 2014, 00:48
- my favorite amplifier: Sears 125 xl, Kasino U100-P
- Completed builds: Fuzzrite (Si and Ge versions) , univibe, companion fuzz, fuzz face(si version), FY-6 super fuzz, FZ-1S, Scrambler, Tone Bender MkI (nearly complete). I have modded my vox v847,Seymour Duncan tweak fuzz, my bass and my guitar ( slightly).
- Location: United States
- Has thanked: 7 times
- Been thanked: 7 times
Wow! That's an awesome looking pedal. As for the scratchy pot, have you tried some contact cleaner?
Education is 10% knowledge and 90% brainwashing. We're only told what they want us to know. The rest is fabrication in it's purest form.