Thursday, 14 February 2013

ZVex Super Hard On - Compact Layout

Request.  The vero version of this that I already posted included axial caps, this keeps the size down by using all radial caps and will be more handy for someone wanting to add a small boost board to another effect for instance.  Includes details for adding a master volume pot.






Geiri's build of this layout in A box:

Posted by at 21:48
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45 comments:

  1. Lug 1 and Lug 2 of the volume pot to output ehh?

    ;-)

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  2. Reducing the board width removes the cut at row 2 hole 5, does that need to be elsewhere? or is it good as is? Thanks

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    1. There has to be a cut between the 5K1 and 10M so just put it anywhere between the two.

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  3. Well, even though it isn't a new layout, you can call it verified but with the master volume. Sounds like an SHO

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  4. I had a weird dream last night. Before I went to sleep, I checked the e-mail from Guitar FX Layouts where it notified a new layout for SHO.

    So in my dream, I opened the same e-mail and there was a new layout for SHO and it apparently was "the new updated super correct version" where it had A LOT of resistors, the 9.1v Zener had three pins (looked like a transistor) and it had two of them. There were two "capacitors" that looked like oversized opamps with about 18 pins or something.

    Man dreams can be weird!

    This is my shinfo of the day (=shitty info)

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    1. Aahaha! Maybe you build just a bit too much these days:D
      +m

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    2. Ha ha, I was just going to say the same thing. You need a holiday man!

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    3. Haha probably! Funny how during the dream, it made sense and was perfectly normal!

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    4. .....oh God, it'll be sleep soldering next! ( cue the music from psycho) eek, eek,eek, eek

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  5. SHO was my first build about a year and 1/2 ago. Badly soldered the few parts together, badly soldered it into a crappy enclosure with a spst switch and......it worked! An amazing moment. Now, about 50 pedals later.....not dreaming pedals....yet ;)

    Geiri - your demos kick ass. Nice playing man.

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  6. Is that the best you got? ;) I did a 9x7 without even trying... http://hotbottles.wordpress.com/2012/03/29/building-a-z-vex-sho-clone-from-scratch/

    I know you don't like vertically mounted resistors though, so it doesn't count ;)

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    1. No, my smallest was 7 x 5, also with no links and 2 cuts, but I'd never dream of building it! :o)

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    2. Could this be used for bass? With what kind of modification eventually?

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    3. I would just up the input cap for 220n.
      +m

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  7. Build it in about 5 min. Worked perfectly. I am a really big fan of this site. I check it almost daily!

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  8. How do I make this but with the original "2 Outputs" ?

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  9. Also what is "Gain 1-3"? The other SHO schematics don't have that...

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    1. The second output just daisy chains off the first, and Gain is Boost or whatever Vex calls it on this pedal. There's only one control and that's it.

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    2. so gain 1-3 would coincide with the Boost Pot lugs?

      also for the second output is it better to split off with two wires from the board to each jack OR run a single line to OUT1 and jump it over to OUT2?

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    3. also in your experience do you think i could fit 2 outputs in a 1590A or would i need to bump it up to a 1590B?

      for reference i want 1 IN, 2 OUT, 1 clear shaft illuminated POT, 1 switch, and DC jack.

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  10. I built it with a dpdt switch fot the output cap, the stock 10µf and a 2,2µf for less bass. Sounds great

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  11. Quick question... I'm building this (Second pedal I've built), and have run into some problems. Basically when I plug it in, I get almost no volume. It's just very barely there in the background, very dark sounding as well. When I was building, I didn't have a 5k1 resistor, so I swapped in a 4k7. Could that be the cause of my problem? I've tried both transistor orientations, new caps, etc. Any help would be great!

    Charlie

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  12. This works great, thanks for the layout

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  13. I don't have any 9V1 zener diodes :( any viable replacements?? Thanks!

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    1. Have you got any other zeners like 12V or 15V?

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    2. all I've got are 1N34A, 1N4739, 1N914, 1N4148, and some assorted LEDs :/
      maybe radioshack has them.

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    3. The 1N4739 IS a 9V1 zener :o)

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  14. I just finished this project (first build). It works, but there is a slight, but noticeable white noise when the pedal is engaged. I built another and boxed it up to see if maybe I just did something wrong in the first build but the noise / hiss is still there. Any ideas where to start looking here? I did use a pretty cheap ceramic disk input cap - is that a possibility? Thanks for any info. Love this site - great stuff on here!

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    1. Well me too. In my pedal the noise is evidently from the circuit, as it is there even with nothing connected to the input. The pitch of the noise gets higher when turning up the boost. Did I fry the transistor with static, maybe?


      Also, I cant seem to get the led to work, as it only flashes while disconnecting the power cable as the pedal is on?

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    2. There are a few known build reports with this layout... Your behaviour could basically be with the power source.. Does the noise appear with both, a battery and a wall adapter?
      +m

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    3. Got my problem solved, thanks for the help Miro. Apparently, the noise was caused by my mistake in soldering the led. As I got the led working, the noise vanished.

      The noise in my box wasn't actually white noise, but a pulsating one. Googling for white noise and super hard on, I found this:

      http://zvex.com/phpBB2/viewtopic.php?t=4801&sid=effa07280ab6583c7072d1732a0cdf56

      So basically a low level of white noise should be expected.

      Now to choose a pot cap...

      https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-ash3/166722_10151527997339617_330642585_n.jpg

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    4. Thanks for the link. Actually, i wondered if it might be just a normal level of noise. Live, you would never notice it.

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  15. Built another one, and ended up with the same problem. Pulsing noise, the pitch of which rises with the gain.

    It appears that this design is very vulnerable to high voltage. I was testing the circuit with a 10v, not a 9v PSU, and the noise disappeared as soon as I changed to a battery.

    Just a heads up to anyone trying to get by with the PSU available at home.

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  16. Done! More than excellent :)
    http://www.flickr.com/photos/95025812@N07/8657477991/

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  17. I have exactly the same problem as cmengel above (9th March).
    I've checked out the layout a dozen times and changed the transistor, and resoldered all the connections and there are no unwanted bridges between the tracks - and always get the same quiet, muffled output.
    Any ideas as to what's causing it?
    I notice that this layout has an extra 1meg resistor over the previous larger layout, is that significant?

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  18. I ordered parts for this build yesterday and can't wait to get started. It will be my first build.

    One question though: I ordered a 1N5239B diode. Mammoth has is listed as a 9V1 Zener. Is that correct? I guess I probably should have asked before I ordered.

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    2. Awesome! Thanks!

      I'll let you guys know how it goes.

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Should all layouts be verified before publishing? This would mean less layouts but more peace of mind?