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Kustom J595 Frankenstein Schematic [message #24689] Thu, 25 February 2016 15:09 Go to next message
GaryLC is currently offline  GaryLC
Messages: 41
Registered: December 2012
Member
Hi folks!

I have an early Kustom J595 "Frankenstein" bass head, has very low output, and some distortion in channel two. My tech (who has always been extremely competent) says he can't find a schematic for this amp. Everybody has told me that these are early versions of the 200 series, he says it me a lot less power than that. I am positive there are people on this forum who are experts on these models, can anybody send me in the right direction for a scematic?

Thanks so much!!
Re: Kustom J595 Frankenstein Schematic [message #24690 is a reply to message #24689] Thu, 25 February 2016 17:36 Go to previous messageGo to next message
chicagobill
Messages: 1932
Registered: April 2003
Senior Member
If you go to the technical section of the site, the Frankie schematic is listed under the K200A section. The schematic has the words "Wide Panel" handwritten on it. There are three different versions of the Frankie heads, plain, reverb (pa), and reverb and vibrato. All three versions are covered on the schematic.

The design is entirely different than the K200A or K200B series amps, but will put out pretty much the same power as the later series amps.

The main power amp design has a transformer coupled driver stage and is somewhat similar to the power amp design of the old Vox Super Beatle amp. Those were rated at 120 watts RMS and the Kustom is rated at 100 watts RMS. It should be plenty loud when working correctly.
Re: Kustom J595 Frankenstein Schematic [message #24692 is a reply to message #24690] Fri, 26 February 2016 08:52 Go to previous messageGo to next message
GaryLC is currently offline  GaryLC
Messages: 41
Registered: December 2012
Member
Thank you Bill! You guys are giving me some wonderful info!
Re: Kustom J595 Frankenstein Schematic [message #24776 is a reply to message #24689] Thu, 17 March 2016 19:25 Go to previous message
GaryLC is currently offline  GaryLC
Messages: 41
Registered: December 2012
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[Updated on: Thu, 17 March 2016 19:26]

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