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Wednesday 3 January 2018 at 16:08
Kewl.. i figured it was likely the +\- voltages or if you also wanted a 24v swing, but like the alternate voltage regulator implementation .
Thanks guys... Someone must have really wanted a Williams soundcard in that Spider-Man! Seems like an expensive and complicated option compared to just getti...
Source: http://pinside.com/pinball/forum/topic/williams-in-gottlieb-soundboard#post-4156216