[sdiy] tb3030 Case and 7945 / 7545 chip

[Tony Allgood]

>The problem lies in finding a suitable case. Its a single tb3030 and
tbDAC so the obvious choice to me seems to be a 1 unit rack, but they
cost £33 from maplin UK, and i'm nearly broke.

I always prefer 2U for the TB3030 and 33 quid for the Maplin racks isn't
too bad. They're nicely made. However, if you want a cheap rack, then
have a go at building one yourself. Go to Do it all, or any DIY place
that cuts wood for you for free, and get a load of MDF cut to size. Use
12mm thick stuff for the sides. And 6mm for the top, bottom, rear and
front panel. Make sure you plan your cutting sizes on paper carefully
first.

You can cut it yourself, but the machines in the DIY shops are quicker
and cleaner... and usually straighter. (oh no... its the 'synth-get
someone else to do it list' again....)

Cover the front one in sticky back plastic (here's one I made
earlier...), white looks good, black tends to show the bumps.

You can make the thing whatever shape you want, and its dead easy to
drill... but don't breathe the dust. Hold the lot together with wood
screws and the bottom panel can be glued with wood glue for extra
strength.

Total cost will be about a tenner. And it looks better than it should.

>Secondly the tbDAC calls for a 7545 or 7945.

Farnell still have the AD7945BN listed at around a fiver. I did get some
from them last month.

>Thirdly, the tb3030 requires a 47k dual linear omeg eco pot...

Rapid and CPC have them. Go get a Rapid catalogue now Seb, and banish
those Maplin woes forever.

Regards,

Tony Allgood, Penrith, Cumbria, England

Oakley Modular Synth and TB3030:
www.oakleysound.com/projects.htm
My music: www.mp3.com/taklamakan