TR-808 Clone PCB!

[moogah]

I've designed an AD633 ring mod which is very nice, but not as gritty as a real transformer-diode model. 

Definatly true, but expiriment with the offset pin to add some extra clipping into the signal for a gritty sound.  Still won't sound like the old style RM's tho.

[Jaicen]

To be honest, i've found that can cause problematic bleedthrough for some reason, possibly due to the oversimplified design ;)

I actually didn't finish my last post, I was at work and the boss came in so I had to cut and run!

I wanted to say bravo on keeping the MB hardware more or less stock. It should be a relatively easy task to integrate a CV module to add velocity to the voices. I'm sure it's not needed on all the voices, but it's nice to have all the same.

Gotta say those PCB's look damn tasty! If I hadn't already started working on my own clone, i'd definitely be interested in getting one. That said, if the price is right.... Two 808's is surely better than one right..? :>

[Jaicen]

Here's a question for all those following this thread!

Does anyone have a source for the correct type of knob as used on the original 808 and the DR-55??

I've been searching in vain for them and don't seem to be able to locate any. Any ideas?

[moogah]

I looked high and low for orignal style components, all I found is what chipsforbrains has on ebay and what is available at vintageplanet.  Unfortunatly the knobs are not amoung the available parts.  Keep a close eye out and you will see people who somehow had a few spares on the shelf somewhere, however, givin their scaricity I've always yeilded to someone with an actual 808 who wanted to do cosmetic repairs.

[Jaicen]

Yeah I wouldn't dream of using original 808 parts (well, actually... it would be nice ;) ).

I figure it's going to be hard to find the textured finish knobs as used on the 808, so i'm thinking i'll just source some black 909 type barrel knobs. Moogah, did you get my mail??