[sdiy] Moog electronics

[WeAreAs1 at aol.com]

In a message dated 12/27/05 9:45:05 AM, anders.sponton at vallnet.nu writes:


> I´ve got this Gibson Victory Artist bassguitar with active electronics
> that´s claimed to be by Moog´s design. Anybody in  there got the schematics?
> 
> 

Hello Anders,

I have a schematic for the Gibson "RD Artist" guitar, which has the Moog 
Music-designed preamp.   I think the circuit is the same in the RD Artist bass, 
although some component values may be slightly different.   I remember the 
Gibson Victory bass -- it was a very nice bass, but I do not remember it having 
active electronics.   I think the only models that included the Moog electronics 
were the RD Artist bass and the RD Artist guitar.   Besides having an active 
preamp and EQ, they have some kind of onboard compression and expansion circuit 
(I can't imagine ever having a need for a dynamic range *expander* on a 
guitar or bass -- but there it is!).   If you are able to try out this bass, please 
let us know how well the circuits work, especially the compression and EQ.   
The circuit does not seem to contain any exotic parts -- just standard 
transistors, FET's, opamps, and one CD4007 CMOS FET package (I'm pretty sure those 
5302 FET's are the same as PN4302 types).   Some of the wiring designations on 
this schematic don't quite make sense to me -- especially the connections 
between the circuit board and the various pickup and comp/expand switches.   Please 
let me know if you can clarify this in any way.

As far as I know, the circuit was not designed by Dr. Moog.   I don't think 
he was part of the Moog music team at the time this guitar was designed, which 
was after Moog sold the company to Norlin Instruments (then later to Gibson).  
 I think the same group also designed the Lab Series guitar amplifiers for 
Gibson around the same time.   They were excellent solid-state guitar amps.   
B.B. King used them as his main amplifiers for many, many years, and they are 
still sought after by many musicians and collectors.

I found this schematic somewhere on the web, but I can't remember where.   
Probably one of the many FX schematics sites.   They were redrawn by a guy named 
Fabian P. Hartery -- at least that's what it says in the engineering info box 
in the lower right corner.   I'm mailing the schematic to you in a separate 
email.   I'll mail it to anyone else who would like it, too.   Just let me know 
via private mail.

Michael Bacich
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