[sdiy] Alesis Midiverb eprom images

[Loscha]

Thanks very much for this stuff Marc and Robin.

I have had one of these for a few good many years now, and I did a few
minor changes to mine as well.

I replaced the RCA plugs on the back with real jack plugs. This was
quite easy. I had small enough jack sockets that I just bolted them in
and ran an inch of wire to the board. The back of the case sits about
1mm shy of closing, but that was because I didn't file out the arch a
bit - I think the sockets were ones salvaged from a broken Yamaha Rx5
drum machine - they are mostly black, but with some red plastic on one
side.

I replaced some of the LEDs with modern LEDs, but because they have
different voltage drops, the way their circuit works didn't agree with
it too much. I wouldn't recommend this unless you had the proper
schematic so you can calculate changes in all the resistors (not just
the current limiting resistor - it seems more complicated than that).

Paul Perry has (or at least had in Feb of 07 when I took this photo)
one that was modded to be a double-tasked unit
http://www.loscha.com/images/PP-Verb-Chips.jpg
http://www.loscha.com/images/PP-Verb-Front.jpg  (Mmark, please feel
free to copy these images to your site or link to them).

The audio has a slight compressing quality as it goes into the unit as
well, which also adds to the uniqueness of the sound, I think.

Again, no idea what's going on there, but would love to see a schematic.

/Edward

On Tue, Nov 2, 2010 at 3:00 AM,  <m.bareille at free.fr> wrote:
>
> I have quickly setup a web page with pictures i had on my drives about the
> Midiverb / Midifex eprmos mods and other minor tweaks i did on it ...
>
> It is here now :
>
> http://m.bareille.free.fr/goodies/midiverb/midiverb.htm
>
>
> Cheers,
>
> Marc B.
>
>
>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>



-- 
www.loscha.com