Seems like the prices are getting to the point to justify reproductions. This one has been talked about and experimented on numerous times and it always seemed to come back to this. Fingers crossed someone actually makes one and makes it available.

Great writeup Robert. Thanks for sharing.

I have to ask, did the Speakjet chip audio sound like the Vortex chip audio? I'd love to hear what it sounds like if you have a sample saved.

I saw someone here say they don't see the SC-01 chips go bad but in the arcade world they do quite often. Wizard of Wor and Gorf use this chip and I've seen at least half a dozen bad chips in the past decade or so. A true compatible replacement(that at least sounds like a relative of the Vortex chip) would be great to have available.

[edit]Just went back and re-read some of the thread and saw it was you who posted this... and I agree about defective power supplies overvolting and kill the SC-01 chips. I've had that happen to me once and to the arcade I help out at once... both on Gorf machines.