MadBean Orifice (Openhaus)

[djmiyta]

I am now on my 5th attempt to build the openhaus. This time using Madbeans Orifice layout. After a little troubleshooting I finally got signal on the output jack.
  There are still 2 issues to work out
  1) - the treble pot doesn't change any thing

  2) - there is barely ANY distortion

As I don't have 2n1306 tranny's I subbed in 2n2369 which I used in my Lighthaus build and they sound great but not so much in the openhaus circuit. I'm assuming (and hoping ) all it is is the tranny's.
 Has anyone built this pedal?
 If you did were there any issues you had with your build? and if so what were they.

It seems most shy away from this build due to the high part count and complexity so finding any info on it is pretty scarce so any help getting this monster to work properly is really appreciated thanks in advance

Trying to figure out how to upload pics that are the wrong format and too big and will as soon as I can

[MIYTADJ]

So.......nothing huh?
  Hoping SOMEONE aside from me built this one.

If SOMEONE has built this I would appreciate ANY info on their build. Mods , build reports, ideas or even "Hey shut up and get over it and move on".
  But alas I could and would not move on or get over it I'm determined to get this one working properly.
 
 Quick question to ANYBODY who can answer it. Would ANYBODY know why 2n2369a would work wonderfully in my( I think it was Sabrotone's layout then Effectslayout blogspot did one which I made that one) Lighthaus build (it is out of 200 builds one of my all time favorite overdrives) and not work in the Openhaus?
 I assume it's because it's a lighter version of the original and having less parts made it possible?

 Anyways here's hoping SOMEONE will chime in

Thanks forum for all your shared wisdom

[madbean]

I actually have on hand a pcb prototype to build this one which I plan on doing when I get home. I should be able to give some feedback on this soon.

[MIYTADJ]

Hi I was wondering if you had finished your prototype and if so how it turned out AND if there is anything you could share about it. My build has been just sitting in it's bag basically cause of no funds to order those transistors.
 Did you or were you able to try any other trannies for your build?

Thanks for the reply and the help by the way I really appreciate it . People taking their own time to read about my problem builds and trying to help are very cool people

[madbean]

Hi I was wondering if you had finished your prototype and if so how it turned out AND if there is anything you could share about it. My build has been just sitting in it's bag basically cause of no funds to order those transistors.
 Did you or were you able to try any other trannies for your build?

Thanks for the reply and the help by the way I really appreciate it . People taking their own time to read about my problem builds and trying to help are very cool people

I've got it nearly populated. I wasn't able to get the exact transistors they use but I got something close. I just need to test them for gain an leakage. Anyway, I will complete the build over the next couple of days and report back. I do wanna make this one happen.

[MIYTADJ]

Thank you for the reply Madbean I do appreciate it
Can I ask what transistors you are trying to use currently? I can't wait til your build is done looking forward to everything you've got to say about this pedal. I've been working on building a working one for a loooong time now and your layout was the only one I got to work. so very much appreciated.
 once I got mine to work it was put on back burner until I too could get the proper transistors
  I built Sabrotones Lighthaus which I found to be an incredible sounding overdrive. I used 2n2369a in it which worked great even though it calls for 2n1306. I tried to use them in the Orifice build and got nothing (maybe I put them the wrong orientation) Would you know why those might not work? Pretty sure theyre a totally different type of transistor. Just curious.

Anyways thanks again and waiting anxiously to hear back

[MIYTADJ]

MadBean
  I have a question for you about the orifice. Would 2n1308 ( a higher gain than 1306 ) work with this circuit?  I know I can Socket and see but rather than spend 20 bucks for 2 transistors and plus shipping I figured I'd ask first. But just going off the fact the 1308 is more gain than 1306 (in my head I think well if 1306 makes it sound that chunky and crunchy more gain more crunch but with my limited knowledge I do know that's not always the case (the more gain more crunch thought)So I thought maybe you could shed some light on that question before I buy them.
  Cause I did have some 2n1304 I tried and I only got a mild overdrive.

Thanks for your time and layouts

[MIYTADJ]

I keep checking here, Madbean for any news or update on your Orifice build. Have you gotten any further or completed it.

  Any ideas for possible subs for 2n1306?

[MIYTADJ]

OK an update (but not much of one) on my build. I finally found and ordered the right transistors for this build from small bear. I will post my findings once they arrive and get installed.

almost 3 years working on getting this pedal to work. Thank you again madbean. I'm counting the minutes until it gets here (probably a week)

[MIYTADJ]

SO!
I finally got 2 2n1306 transistors for this and....... it still only does a light overdrive. Only slightly more than having 2n1304 in there. I've triple checked all values and checked for solder bridges , touched up solder joints I thought might be dodgy and the only mod was I'm missing the switch that is under the gain mode switch. I have 2 wire soldered in and twisted together. Don't think that would cause any issues but I don't know for sure.
  Hoping to hear something soon from the Bean himself.
  How about it Mr. Madbean have you finished your orifice build yet ?

[jimilee]

Got pics, an audio probe and voltages?


Sent from my iPhone using Tapatalk

[MIYTADJ]

Oh so happy to report ....that after 100's of builds I still manage to fuck up. I had 150 ohm in R7 instead of 100k
The pedal worked but not as intended. I also found a broken lead for c32 replaced that and we're in business. It doesn't sound quite as beefy and chunky as on the vids I've seen.
  I'm wondering since I had 150 ohms in r7 and got a light overdrive put in the called for 100k and got some smooth distortion so I'm thinking what if I upped it to say 110k or even 120K to coax out all the chunky goodness this circuit has to offer.
 
 Hey Madbean thanks once again for another fantastic layout. Hope you got yours up and running. Got my 2n1306's from Small Bear.

[jwin615]

Oh so happy to report ....that after 100's of builds I still manage to fuck up. I had 150 ohm in R7 instead of 100k
The pedal worked but not as intended. I also found a broken lead for c32 replaced that and we're in business. It doesn't sound quite as beefy and chunky as on the vids I've seen.
  I'm wondering since I had 150 ohms in r7 and got a light overdrive put in the called for 100k and got some smooth distortion so I'm thinking what if I upped it to say 110k or even 120K to coax out all the chunky goodness this circuit has to offer.
 
 Hey Madbean thanks once again for another fantastic layout. Hope you got yours up and running. Got my 2n1306's from Small Bear.

Do you have a schematic? Sounds like it may need some biasing. Do you have a schem?

[MIYTADJ]

Yes I do it's in the Orifice build docs.

[MIYTADJ]

here is the build docs
also I don't understand sw1. It's purpose I mean. Looks like a cutoff switch or bypass
nor do I know how to bias using resistors only trimmers have I used