[sdiy] Zener diode wattage tolerances

Harry Bissell harrybissell at wowway.com
Mon Jul 9 22:03:23 CEST 2012

If it was ~bent~ from a pinball mackine the knobs and switches might be emulating sensors from the actual game...

bumpers, targets, etc...

it may be less hacked than you (we) think...

H^) harry

----- Original Message -----
From: Bob K <farfisa5 at gmail.com>
To: Tony Clark <clark at greatlakesmodular.com>
Cc: synth-diy at dropmix.xs4all.nl
Sent: Mon, 09 Jul 2012 15:59:38 -0400 (EDT)
Subject: Re: [sdiy] Zener diode wattage tolerances

This is all incredibly cool.  Thanks everyone so far.

It's basically a wooden box (about the size of a toolbox) with about
four knobs on the front, a couple of switches, a power plug and a

I'm now thinking someone just made a machine that has the sound card
from the pinball table that outputs the stored sounds on the original
chip.  Since that's all digital I'm thinking maybe the knobs are just
for speeding up or slowing down the samples.

Either way, I check it out when I get home and report back with my findings.

On Mon, Jul 9, 2012 at 12:32 PM, Tony Clark <clark at greatlakesmodular.com> wrote:
> On Mon, Jul 9, 2012 at 3:16 PM, Harry Bissell <harrybissell at wowway.com> wrote:
>> As it has a pinball power supply board... it might be that it ~is~ a sound system from a pinball machine that someone
>> hacked to just get the sounds...
>> hmmm but ~what~ machine could it it be ???
>> H^) harry
> It's a Gottlieb System 80 power supply board.  Could be from any
> number of games.
> Here's a list of all the Gottlieb System 80 games:
> http://ipdb.org/search.pl?searchtype=advanced&mpu=15
> The two most popular System 80 games are Haunted House and Black Hole.
> HH and BH (and possibly a few other System 80 games used a sound board
> that has a SC01 speech chip.  Possibly hackable into a noise maker,
> but It'd be pretty insane to do that.  The chips are rare and not very
> robust, so treat with care if you have one.
> Curious to see the rest of the homebrew synth.   If it has the
> original transformer to go along with that power supply, it'd be one
> HEAVY noise maker!
> Tony
> --
> Tony Clark
> Great Lakes Modular
> www.greatlakesmodular.com
> Design, Engineering, and Manufacturing Services
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Harry Bissell & Nora Abdullah 4eva

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