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Thanks!  This is my first time using them.  I did have a problem where the tip connection wasn't bent correctly on one of them and the Jack would go under instead of over.  A little retensioning and all was well.

Oh, and I did use a BB OPA2134 for the op amp as well.  I forgot to list that above.


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I just wrapped up my first 1590A build last night, and I'm hooked!  It's a Stomptown Electronics Baby Screamer.  I used the values for the Keeley mod plus to tweak this little guy.  I love it!

I still suck at enclosure finishes, so this little guy is sitting in a unmarked enclosure.  I want to start doing more finishes on enclosures, but I have the hardest time coming up with ideas.

Anyway, here are the obligatory pics:


Thanks!

Andy

Nice!  I have one of those boards.  I'm waiting on some small parts for it at the moment.


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Nice build! Everything about it looks great!


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Very nice!  Love how it turned out!


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Wow.  That's just crazy. 

I found these: http://www.ebay.com/itm/Alpinetech-A-CNC-Aluminum-Enclosure-Box-Mod-1590A-Hidden-Magnet-Hole-Anodized-/221888494165

The only problem is they aren't drilled for screws on the bottom, and the hefty cost.

Andy


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I guess I'm using the wrong term applied to what I tried, but that is how I approached it.  I used the bias to try and get clean repeats and then the clock trim to dial out the whine.  What I'm also  experiencing is that the output of the MN3005, pins 3&4, have a really low distorted volume to them.  In my Dirtbag the volume on pins 3&4 is the same as the input. Ill mess with it tonight and see what I can come up with.  Thanks for the help!

Andy

Sorry, yes I am hearing the whine while probing pins 3&4 with an audio probe.  The issue is that I cannot get the whine biased out.  I've checked all of the values, including the bias trim pot, and they are good.  I've socketed the recommended resistors and tried different values based on the notes in the build document. 

Thanks again,

Andy

Bump... I've been working on this one still and haven't found anything yet.  If anybody has any hints I'd really appreciate it!

Thanks,

Andy

I just built up a Aquaboy v2 PCB for a MN3005 and I'm getting a high pitch whine on the MN's pins 3&4 with a lot of distortion that I can't seem to bias out.  I'm going through and verifying resistor values to make sure I don't have any invalid values, but what could possibly be causing this?  I've verified my MN3005's in my Dirtbag, so I know they work which is a great relief, but even the ones i have in my Dirtbag exhibit this problem.

Could the clock cap, which measured dead on 100pF, drift and cause this type of issue?  This is going to be a learning exercise for me as my Dirtbag build went sooo smooth. 

I've audio probed the audio path and I have audio all the way to pin 7 of the MN3005, so I know that the board is at least passing signal.  Just looking for some hints as to what it might be.

Thanks,

Andy

If there's any left, I'm down.  Let me know.  

Andy

There's also the option of using tantalums like the keeley version too.  Those wont take up that much space.

I like that a lot!  I've been wanting to do a 4-knob clone for a while, but me and vero don't get along very well.

Andy

Found these on ebay and thought i'd pass it along to everyone:
http://www.ebay.com/itm/160975081170?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

Looks like the guy went through the trouble of testing them.  I got them for a best offer of 2 for $70 shipped, so I'm rolling the dice to see if they actually work.  If not, no risk no reward...  at lease they are coming from the US and not HK or China.  Figured I'd take a shot.

Thanks,

Andy