DirtBag Delay ~ Deluxe Memory Man

madbean · Post by **madbean** » 03 May 2011, 01:05

I'm back to working on this as time allows. In addition to the larger single sided layout, I'm considering a smaller double sided layout that would fit in a 125B. So far, it's looking promising as a regular through-hole build...PCB mounted pots, too!

I'll post more when I know more. Perhaps a very small run of the double sided version could be done for interested parties at a very reasonable cost. I'm guessing there are a few people interested based on the number of emails I've gotten about this project in the last few months. It would not be something offered at madbeanpedals, but basically for FSB...much like how the Aquaboy started out.

Post by **jstbrowsin** » 03 May 2011, 02:34

Awesome MB!!!

I might even just buy a few double-sided boards from you just to support the huge amount of work you have put into this.

Sorry for the unwanted pressure bud.

pdub · Post by **pdub** » 03 May 2011, 05:03

I'm in for sure. I have been saving a couple MN3005's just for this! Thanks

telecaster · Post by **telecaster** » 03 May 2011, 16:14

Will this board be capable of using the v3205 chip?

madbean · Post by **madbean** » 03 May 2011, 16:57

telecaster wrote:Will this board be capable of using the v3205 chip?

No, that would require an altogether different design. The power requirements are quite different.

DWBH · Post by **DWBH** » 03 May 2011, 18:14

I think a Cool Audio chip adaptation in this circuit and board would be welcomed, just like it happens with the Aquaboy design, IMO.
MNxxxx chips are scarce at best, and Cool Audio chips are now used everywhere (malekko, ehx, behringer), so in the long run I think the cool audio compatibility would prove to be very handy.
IMO, of course.

On the other hand, maybe some people would like this design to stay as true to the original as possible, and have the Aquaboy for different chips and mods.

Post by **azrael** » 03 May 2011, 18:31

Wow, I would love a double sided fabbed version.

madbean · Post by **madbean** » 03 May 2011, 18:59

Yes, there is a possibility of adapting the design to the v3205 and I will certainly consider that. One thing at a time, though. The MN3005 goes first....I know quite a few people want to build the classic version. Myself included

DWBH · Post by **DWBH** » 03 May 2011, 19:37

I would too, if I had the ICs.

I envy you guys.

pdub · Post by **pdub** » 03 May 2011, 20:01

I just got 2 from utsource that are legit. Took a week to get them. I also got a couple last month from these guys in Spain www.retroamplis.es that were also good.

Post by **jstbrowsin** » 03 May 2011, 22:56

Damn here was me getting all excited then realised I don't have any MN3005 chips

. . . then I decided to look around see how easy OMG

Lots of counterfeiters out there it seems

and they are not cheap but neither is the a EH DDM so anyone know of a reliable source of these chips other than Utsource and retroamp please?

rasta_maleek · Post by **rasta_maleek** » 05 May 2011, 06:18

madbean wrote:I'm back to working on this as time allows. In addition to the larger single sided layout, I'm considering a smaller double sided layout that would fit in a 125B. So far, it's looking promising as a regular through-hole build...PCB mounted pots, too!

I'll post more when I know more. Perhaps a very small run of the double sided version could be done for interested parties at a very reasonable cost. I'm guessing there are a few people interested based on the number of emails I've gotten about this project in the last few months. It would not be something offered at madbeanpedals, but basically for FSB...much like how the Aquaboy started out.

i want one of this pcb´s when finish the design brian, count with me.

Mich P · Post by **Mich P** » 09 May 2011, 12:19

Count me in for a couple too !
Thanks,
Mich P.

Hides-His-Eyes · Post by **Hides-His-Eyes** » 09 May 2011, 14:09

jstbrowsin wrote:Damn here was me getting all excited then realised I don't have any MN3005 chips . . . then I decided to look around see how easy OMG

Lots of counterfeiters out there it seems and they are not cheap but neither is the a EH DDM so anyone know of a reliable source of these chips other than Utsource and retroamp please?

There is no consistent reliable cheap source. If you don't have any lying around I'd find another analogue delay project. It's not worth the heartache of paying £20 for a fake you're unlikely to even have the means to test to know if it's fake when you get it (fake chips aren't "dead", they're relabelled from smaller delays, so it still works but you only get a fraction of the delay time)

JakeFuzz · Post by **JakeFuzz** » 09 May 2011, 23:30

Definitely count me in on one of these and the velcro vibe.

Post by **jstbrowsin** » 10 May 2011, 11:09

Hides-His-Eyes wrote:
jstbrowsin wrote:Damn here was me getting all excited then realised I don't have any MN3005 chips . . . then I decided to look around see how easy OMG

Lots of counterfeiters out there it seems and they are not cheap but neither is the a EH DDM so anyone know of a reliable source of these chips other than Utsource and retroamp please?
There is no consistent reliable cheap source. If you don't have any lying around I'd find another analogue delay project. It's not worth the heartache of paying £20 for a fake you're unlikely to even have the means to test to know if it's fake when you get it (fake chips aren't "dead", they're relabelled from smaller delays, so it still works but you only get a fraction of the delay time)

Thanks for the "heads up" . . . £20 thats just over $40 NZD a chip!!!

I have read about the relabeled chips giving smaller delay times, however I have been a offered couple for a little cheaper than that (and a 3 mth guarantee as well). I think I might just "bite the bullet" and go for it" (not as much to lose) but I'm staying mum about my source until I can confirm wether or not they are the real deal. I'm also pretty sure I have a means to test this through a few MI stores

.

The only reason I'm even contemplating this is because of this delay

Damn you MadBean

why oh why did you have to tempt me with this

madbean · Post by **madbean** » 10 May 2011, 15:03

Just a brief update: double sided design has been kicking my ass. It's been a challenge to get the exact layout I want. I've abandoned the 125B layout in favor of a 1590BB. I got the 125B version about 90% there but got to a spot that is impossible to route on a two sided design. Too bad, cause it was a killer layout. I don't really want to do four layers so onto the larger version, which is about 50% finished.

Dirk_Hendrik · Post by **Dirk_Hendrik** » 10 May 2011, 16:29

rocklander · Post by **rocklander** » 10 May 2011, 21:44

Dirk_Hendrik wrote:SMD?

rasta_maleek · Post by **rasta_maleek** » 11 May 2011, 06:53

rocklander wrote:
Dirk_Hendrik wrote:SMD?

don´t say this, SMD is for little hands and razor eyes, i´m ok to do it with SMD resistors( in example) and tipical electrolithics and poli-caps. it´s a new challenge.

cheers
ivan