| K25 K50 Challenger information/timeline [message #7126] |
Wed, 05 July 2006 21:30  |
LesS
Messages: 478
Registered: December 2002
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Senior Member |
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K25 / K50 / Challenger / 1-L
The K50 said "50" below the "Kustom" on the faceplate, the K25 did not have
a number below the "Kustom" on the faceplate.
The K25 was the earlier model, it was replaced by the K50.
The K25 output is 12 1/2 watts RMS.
The K50’s output is 25 watts RMS.
(The impedance that the K25 and K50 were rated at is unknown, but could be 16 ohms)
The Challenger’s output is 25 watts RMS.
The stock speaker in the K25 and K50 was a 16 ohm, 50 watt, Jensen C12N.
The stock speaker in the Challenger was 8 ohms.
K25/K50/Challenger/1-L Timeline
a) K25’s were produced for a very short time – about Jan 1970 through May 1970.
b) The K50 was produced about June 1970 through April/May 1972.
c) The plexiglass-faceplate K50 was replaced by the metal-faceplate Challenger produced from about June 1972 through Dec 1973.
d) Next came the black tolex (silver faceplate) Kustom 1-L Lead amp produced from about Jan 1974 to about June 1977. Tag on back of amp indicated 25 watts RMS but other information indicated 30 watts RMS (possibly early models were rated 25 watts and later models 30 watts?). It had a 12" speaker (CTS?) with aluminum voice coil cap, 38 ounce magnet, 1 1/2" voice coil, 8 ohms.
e) Then came the black tolex (black faceplate) Kustom 1-L SC Lead amp produced from about July 1977 to about 1982. Output power was 35 watts RMS. It had a 12" Eminence speaker with a paper voice coil cap.
The SC combo brochure was issued May 7, 1970 for the new models (K50, Kustom 150 etc.)
The 50 watt 1-12SC in the literature refers to a K50.
I believe the reason why you can't find the K25 in any literature is that it was only made for a short while and, due to the timing of when the brochure was issued, the new model was put in.
There is some irony here - if you have the SC combo brochure (which was the new models), notice that all the pictures were actually of the old models. My guess is that due to deadlines the brochure was issued and there wasn’t enough time to photograph the new models, which looked the same anyway besides the nameplate (Kustom 150 instead of Kustom 100, etc.)
(If anyone has any corrections or additions to this, please let me know and I will revise it.)
VintageKustomFAQ9
[Updated on: Sun, 09 September 2007 22:19] Report message to a moderator |
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