New Dirt Bag Build Up and Running

[Trash Cadillac]

Hi All,

The first build of two planned is up and running.
Photos and stuff later on.
Not boxed but all working like the real deal.
I got some MN3205 chips to compare to the v3205 for the 9v build.
Had lots of extra clock noise on the v3205 and none on the MN3205.
I had to re-bias when I changed chips, but not that much variation in trim position.
The repeats were stronger and clearer with the MN3205, easier to dial in and just punchier.
The MN3205 just sound better overall. Chorus and vibrato sound fantastic, and it's really
easy to get those feedback builds and Edge type sounds.

I have some utsource PAN MN3005 chips on the way, I hope they are not duds, otherwise it's a double up
board I suppose.

Thanks to all for previous posts and info. Fantastic resource for this challenging build.
I went close a few times to pulling up solder pads from too much heat. Very close components as well.
Thanks Brian for the boards.

Cheers to all,

DjK

[DutchMF]

Hi there!

This is some usefull info, comparing the v3205 and the MN3205, thanx! Regarding the MN3005's you've got coming, I think I saw something in the build-docs that warned about converting a board from 3205 to 3005 use, so you might want to be careful there. Anyway, good luck, I'm curious how the 3005's compare to the other ones, so please post your results!

Paul

[Scruffie]

Now that's interesting... i'd been wondering about the MN vs V3205s, did you do the 3205 mods or was that a straight dirtbag build?

Might have to find some MN3205s...

[Trash Cadillac]

Guys,

Mods were as per the latest in the build info.
I can say the trim adjustments were critical.
One tweek too far in the wrong direction and you are out of the zone.
We are talking millimetres on the trimpots.
I had a number of attempts to get a feel for it with each set of chips.
But when it is right, the repeats are strong and undistorted.
Plus some of the trim pots I have are the old fashioned stand ups, and are harder to adjust.

Cheers,


DjK

[Trash Cadillac]

To all interested,

Pics of the final boxed Dirt Bag in Psycho Vein Green paint:



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Sounds great, hopefully some clips soon.
I compared it to a vintage DMM and this Dirt Bag was a bit darker, had longer repeats, but was good in different ways..
Just a little funkier/dirtier sounding ,which is to be expected I suppose with the lower voltage on these chips.

Thanks all,

Cheers DjK

[nzCdog]

Hey well done, and nice looking build!  Love to hear some clips of this, particularly if you can AB the DB with the the MM 

[Trash Cadillac]

Thanks,

Tight fit in there. I think I'll use a bigger box for the next one.
Any better enclosure size suggestions from other Dirt bag builders?
Maybe just a deeper version of this one.

I am about to build an MN3005 Version, and once done I can compare all 3 at once.
Looking forward to that.
The Chips have just arrived and look OK. I'll soon find out if they are legit.

Interestingly, I thought I had a clock noise issue on the longest setting with this, but when I used another 9v wall wart it went away completely.
I think that has also happened to a few other DBD builders.

Cheers,

DjK