Clavinet Resource Homepage
Clavinet.Com Presents: Upgrading the D6 Preamp
information was provided by Jim Williams of Audio
Upgrades in Van Nuys, California. Jim has been working for Stevie
Wonder for over 25 years, refurbishing the five clavinets that Mr. Wonder
owns. Jim is also responsible for the "Hard Hammer" Rhodes sound
that "Dyno-My-Piano" copied. This sound was sampled by the
"Ballad" patch on the Yamaha DX7 and is still heard today. |
This modification that Jim has *generously* provided upgrades the D6 preamp with low noise transistors and premium film caps. According to Jim, this mod opens up the top end details, reduces noise and distortion and adds the "natural air" back in to the sound of the clavinet.
1. Change the front end transistor BC
413C to a Motorola MPSA18. The pinout is reversed on the replacement
A. The bypass caps can be soldered on the rear of the PCB.
B. The Wima caps can be obtained from the Intertechnical Group in Malvern, NY or TAW electronics in Burbank, CA.
C. Rubycon caps can be ordered through Future/Active Electronics with offices located in large cities.
D. Panasonic caps can be got from Digi-Key, 1-800-digikey.
E. The Motorola transistors can be got from Allied, Newark Electronics, etc.
Inside Stevie Wonder's
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