TR-505 => TR-808?

Drew Smith drew at pctc.com
Tue Jun 6 00:53:16 CEST 2000


	Hey folk,

	I'm trying to mod my TR-505, to frankenstein in a TR-808 bass kick
circuit.  I'm having some troubles, however, and would love any
assistance anyone's got to offer...

	I've used my incredible high-school electronics knowledge to decipher
the bass circuit from the TR-808, thanks to machines.hyperreal - well,
I'm short two capacitors, but they'll be in soon.  My problem stems from
the fact that high-school was about seven years ago, and I haven't
touched anything like this since - for that matter, I didn't really do
anything impressive then, either.

	I'm hoping that someone on this list has done a mod of this exact type
before - I keep hearing rumours of people modding 808 bass kicks into
their TR-606, and even saw one on Ebay - mailing that guy wasn't any
help; he responded "A friend did the mod" and wouldn't respond to a
couple of extra mail asking politely for his friend's email.

	What I'm hoping most is that someone has created schematics of their
own, with the TR-808 bass kick circuit in a self-enclosed package -
well, not really self enclosed, more of a circuitboard with trigger-in
(and voltages needed to trigger) and power-in.  I'm trying to track
these on my own, but it gets pretty confusing where the triggers join
all together, etc. Ideally, this would be a cut of the original
schematic with pointers like "Here's where you give it 5v, here's where
you attach the 1/4" out, send 3v to this wire to trigger the kick".

	Imagine it - a TR-505 with a TR-808 bass kick.  Perhaps even with the
eventual decay mod - wow!  The TR-505 has a great little sequencer, and
it runs happily on six double-a batteries.  Battlestations!

	Again, thanks in advance for any help - it's much appreciated!

	Cheers,
	- Drew.

--
Drew Smith, UNIX Network Administrator
Pacific Corporate Trust Company, Vancouver



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