Zvex - Super Duper

bradb · Post by **bradb** » 02 Oct 2007, 03:02

Hey guys,

A friend made a great recording with a super duper into a bassman.... holy crap, creamy distortion, so perfect.

Is the super duper just 2 cascaded SHOs with no additional control except for a master vol? whats that master vol ckt like?

tried searching super duper, but found nothing..

thx!

JHS · Post by **JHS** » 02 Oct 2007, 07:47

2 SHO, cascaded and selectable via switch + 100k master vol at the output of the 2nd stage.

JHS

Bernardduur · Post by **Bernardduur** » 02 Oct 2007, 13:31

JHS wrote:2 SHO, cascaded and selectable via switch + 100k master vol at the output of the 2nd stage.

JHS

The 100k master volume at the output of the second stage replaces the 100k to ground

guyg · Post by **guyg** » 02 Oct 2007, 16:13

https://img209.imageshack.us/img209/652 ... perwb6.gif

That's what I got of the duper.

trevize · Post by **trevize** » 02 Oct 2007, 16:25

so the box of rock is boring evolution of the super duper which is the boring evolution of the sho

Eloy · Post by **Eloy** » 02 Oct 2007, 18:04

guyg, i think that´s not correct !
In the Super Duper there are 2 gain pots and one MV pot, you only have two pots in your schem. .
The gain pots are connected to the BS170 S pin and they are actually C5K.
After the first 10µF cap there is a 100K resistor to ground.
There are 2 switches that controls independently the 2 SHO in the Super Duper, i don´t see them in you schem also.

bradb · Post by **bradb** » 02 Oct 2007, 18:31

Are the two switches basically 2 true bypass switches for each one?

we're gettin' there!

DWBH · Post by **DWBH** » 02 Oct 2007, 18:45

markm · Post by **markm** » 02 Oct 2007, 18:52

I'm currently working on a PCB layout for the 2-in-1 for the guys that still etch!

tomtom · Post by **tomtom** » 02 Oct 2007, 18:53

There are two versions of the SHO, the first one used two diodes for protection I suppose, 150n input cap and 100k to ground output resistor.
Z. had worked a new circuit later without diodes but a zener for protection, a 100n input cap and 47k output resistor (less output). He uses some kind of millenium bypass to avoid popping and a 100µ filter cap (with a small resistor too maybe). All SHO and SD use 10M by the way, you will find 1M only for the JO and BOR boost
If you use two of those last stages in a row with a 3pdt for each one and make the 47k resistor a B50k pot then you will have a Super Duper.

Somehow I felt the headroom is gone when you cascaded stages so when you don't set it up just right you will have two powerfull stages and a lot less powerfull sound when you combine the two.

Hope that helps.

$uperpuma · Post by **$uperpuma** » 02 Oct 2007, 22:02

markm wrote:I'm currently working on a PCB layout for the 2-in-1 for the guys that still etch!

we're out here!

Goop_buster · Post by **Goop_buster** » 02 Oct 2007, 22:07

$uperpuma wrote:
markm wrote:I'm currently working on a PCB layout for the 2-in-1 for the guys that still etch!
we're out here!

+1

Eloy · Post by **Eloy** » 02 Oct 2007, 22:12

Goop_buster wrote:
$uperpuma wrote:
markm wrote:I'm currently working on a PCB layout for the 2-in-1 for the guys that still etch!
we're out here!
+1

+2

I was thinking doing that myself but i´m short on time for those things and i´m a little slow doing that stuff ! I was thinking in doing a ZVex style pcb with the pots onboard to avoid standoffs ...

markm · Post by **markm** » 02 Oct 2007, 22:19

Eloy wrote: +2

I was thinking doin that myself but i´m short on time for those things and i´m a little slow doing that stuff ! I was thinking in doing a ZVex style pcb with the pots onboard to avoid standoffs ...

Well, you can still do one like that!!
I'll do mine in the classic style 'cause I'm Old........school...
That's Old School!!

bs_170 · Post by **bs_170** » 03 Oct 2007, 15:12

hi guyz

my friend in japanese forum told me the vol pot is 50kB

http://www.songofwind.com/img/img59_zvsd2l.jpg

notice that there are 6 trannies on the board
and 2 of DPDT are used
it seems to be millenium bypass

http://www.proguitar.de/ProGuitarPreisl ... rInnen.jpg

to my surprise, later SHO board consists of the HALF of SD's!

http://matsumin3.gozaru.jp/bunkai/Z_vex_SHO/index.htm

reb · Post by **reb** » 03 Oct 2007, 15:33

Has the vero layout been verified?

The crackle pots in the photos look like they should be C5k.

Thanks,
Rob

lonelove · Post by **lonelove** » 03 Oct 2007, 15:55

http://fatboy.ssguitar.com/schems/Super ... 0n%201.gif

RDV

markm · Post by **markm** » 03 Oct 2007, 16:06

I beleive you would be correct here, the pots are C5k reverse log.

reb · Post by **reb** » 03 Oct 2007, 17:37

I also sometimes see 50 for volume, sometimes 100.

invalidcd · Post by **invalidcd** » 03 Oct 2007, 18:46

What are the extra transistors, looks like another bs170 and 2N3906 and or 3904? What are they for, maybe a push-pull thing?

Zvex - Super Duper [traced]