via this auction
via the description:
"I bought this Chroma Expander in either 1986 or 1987 directly from Fender to use as a backup and programming synth when I was working with Josef Zawinul in all technical capacities. As you can see from the pictures, I added forced air cooling (a fan) to the rear panel and cut an air intake hole on the bottom of the synth adjacent to the power transformer location. I did this mod to all of Joe's Expander's and he had already had it done to his Chroma's. European Jazz Festivals in the summer were not forgiving to his analog synth gear. The fan will run at the same speed regardless of the Mains Voltage selected. Even though we never took this unit on the road with us, it had to be ready to travel just in case.
I have completely rebuilt the power supply. C3 is now 50,000ufd 16VDC rated allowing me to remove the OverVoltage Crowbar circuit and all Series Pass elements have been replaced as well as the rectifiers and electrolytic capacitors. The capacitors have been replaced with 105 degree Panasonic FC or Nichicon types with higher microfarad values. The Dual Channel Voice Card Motherboard has been upgraded as well. The batteries have been replaced with rechargable Li-ion types and the battery holder was replaced as well.The Midi Converter is from my friend Ken Ypparila at Syntech and is installed internally. I will include a copy of the manual I made back in the day. The midi jacks are not labeled, however, I used patch-bay wiring convention of Send upper and Receive lower...
Shipping will be expensive. Roughly 60 lb.'s and because of double boxing the packaging will be 50 inches X 20 inches X 15 inches. "
No comments:
Post a Comment
Note: comments that insult people will be removed. Critique on gear is allowed. Do not ask if listings are still available. Click through auction links to check yourself. Posts and pics remain for historical purposes. To reduce spam, comments for posts older than one week are not displayed until approved (usually same day).