Zvex - Box of Metal [traced]
I just take a look at my friend's BOM and found some differencies.
It's one of the first, not a vexter.
Input cap is 10n, the missing cap is there too, 2n2
and it's quite hard to read but my cap meter with short leads
shows a 180p cap for the treble side of the tonestack, not a 2n.
Vactrol is VTL5C9 (fast attack, fast decay)
I liked the gate function as it's a bit noisy but you need to open the gate
fully clockwise or it sounds like a gated fuzz but it's usefull if you need
clean rythm work because with such amount of gain it's could be messy,
nice bass response though. I think it might be nice to put some resistance
instead of wiring the three SHO to ground, less drive but less noise too
and use a second footswitch as a boost clamping those stages to ground.
What else ? 10R power supply R, I will take another look, the warranty seal
is broken so !
Tom
It's one of the first, not a vexter.
Input cap is 10n, the missing cap is there too, 2n2
and it's quite hard to read but my cap meter with short leads
shows a 180p cap for the treble side of the tonestack, not a 2n.
Vactrol is VTL5C9 (fast attack, fast decay)
I liked the gate function as it's a bit noisy but you need to open the gate
fully clockwise or it sounds like a gated fuzz but it's usefull if you need
clean rythm work because with such amount of gain it's could be messy,
nice bass response though. I think it might be nice to put some resistance
instead of wiring the three SHO to ground, less drive but less noise too
and use a second footswitch as a boost clamping those stages to ground.
What else ? 10R power supply R, I will take another look, the warranty seal
is broken so !
Tom
- briggs
- Tube Twister
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Hi all. Lets keep the good nature. Here on the web there are no boarders, barriers or other obstructions that should cause people to feel unwelcome or threatened. All men (finally) are equal in cyberland, so lets treat each other that way and continue the great and exciting work this forum contributes If you wanna discuss politics go to a politics forum or the Cafe. Not the Box of Metal thread. Posts removed/edited....
- culturejam
- Old Solderhand
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Why? It sounds crappy and isn't really needed. On mine, even with gain dimed, it doesn't hum or otherwise make a lot of hiss or noise.feelsobad wrote:I'm waiting for a schematic of gate section
- culturejam
- Old Solderhand
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Okay, attached is my attempt to redraw Bajaman's excellent schematic. I did it mostly as a practice exercise, but I figured I'd share it.
If anybody sees any mistakes, please let me know and I'll correct it.
If anybody sees any mistakes, please let me know and I'll correct it.
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- 5knobSHO.png (9.6 KiB) Viewed 5605 times
- bumblebee
- Diode Debunker
The mistakes I see are you have thegain pot numbering wrong, lug 1 should go to ground or they will be rotating backwards. You have the volume pot orientated correctly.
I forgot to say before, why doesn't 5 SHO's and a marshall tonestack surprise me? Vzex sure gets a lot of mileage out of the SHO doesn't he!
I forgot to say before, why doesn't 5 SHO's and a marshall tonestack surprise me? Vzex sure gets a lot of mileage out of the SHO doesn't he!
I so dislike the modern digital world that I need to use semi-digital effects to emulate the analog world of cassette, VHS, and vinyl.
- culturejam
- Old Solderhand
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Bajaman's schem has the wiper drawn on the left side, which usually means that lug 1 is at the top. The trimmer on the last SHO stage is also drawn this way.The others are drawn with the wiper on the right. Maybe a coincidence?bumblebee wrote:The mistakes I see are you have thegain pot numbering wrong, lug 1 should go to ground or they will be rotating backwards. You have the volume pot orientated correctly.
Hey man, that's just good business efficiency.bumblebee wrote:I forgot to say before, why doesn't 5 SHO's and a marshall tonestack surprise me? Vzex sure gets a lot of mileage out of the SHO doesn't he!
- culturejam
- Old Solderhand
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Thanks! I'll fix it when I get home tonight.estragon wrote:R6 and R7 should be kilo ohms (K), not ohms (R).
- bajaman
- Old Solderhand
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not surface mount I hope!!Got a PCB I'm working up on this if anyone is interested.
bajaman
be kind to all animals - especially human beings
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Nah, it's through-hole. Good news is it will fit in a B box zVex style. Pretty much done with it...just doing some checking. No gate function, though.bajaman wrote:not surface mount I hope!!Got a PCB I'm working up on this if anyone is interested.
bajaman
- culturejam
- Old Solderhand
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You da man, MadBean. Can't wait to see it / build it.madbean wrote:Good news is it will fit in a B box zVex style. Pretty much done with it...just doing some checking. No gate function, though.
It's a good thing, too, because I just traded the BOM for a Catalinbread Heliotrope.
- culturejam
- Old Solderhand
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Okay, I fixed the resistor values and added the value for the GAIN pot.
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- box_of_5shos.png (9.99 KiB) Viewed 5030 times
- bajaman
- Old Solderhand
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C11 should be attached to the other end of the bass potentiometer
bajaman
bajaman
be kind to all animals - especially human beings
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Hmm, the original drawing had it the other way, did it not? Anyone wanna firm this up? I've got the build docs ready to go.bajaman wrote:C11 should be attached to the other end of the bass potentiometer
bajaman
- culturejam
- Old Solderhand
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I agree with the Bean.madbean wrote:Hmm, the original drawing had it the other way, did it not? Anyone wanna firm this up? I've got the build docs ready to go.bajaman wrote:C11 should be attached to the other end of the bass potentiometer
bajaman
Baja, your original drawing shows C11 connected to the bottom (lug 1) of the Bass pot. Should we change it to connect to the other outer lug (3)?
- bajaman
- Old Solderhand
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Yes - change it - my sketch is wrong my apologies - I just checked the board photos.
Please post the PCB layout when you have it finished madbean
Thanks guys
bajaman
Please post the PCB layout when you have it finished madbean
Thanks guys
bajaman
be kind to all animals - especially human beings
- bajaman
- Old Solderhand
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Looks good - great work madbean
bajaman
bajaman
be kind to all animals - especially human beings