Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - axehandlejack

Pages: [1]
1
the later "STAGE" 65 amp is way differant than the ealier U65RD! they have a "bright switch" instead of "clipping". it may just be a model 65B that i have seen!!

2
Amplifier Discussion / Re: Solid-state guitar amplifier history -thread
« on: January 30, 2008, 05:38:18 PM »
i find some amps were marked or labeled with U65RD, and later the univox logo was gone and a "stage" logo was added in the upper left front of the speaker cloth. i also read that the place in tokyo japan had burned down. and westbury amps were produced in Korea? how true that is i dont know!?

3
Amplifier Discussion / Re: Solid-state guitar amplifier history -thread
« on: January 19, 2008, 09:38:25 AM »
OK, i started on the schematic!? i am using "express sch" and i find it difficult to use mainly from the poor symbols and trying to find the correct ones!? any easier freebee's? let me know?
it will take some time but, i will putter with it a little while each day when i can. it will be two page schematic (at least), because i am trying to lay it out how it is already in the amp!
i have the power supply part done so far!
I will be needing help, and i surely need to know the 14 transistors numbers and if possible the company who made them!?
i will leave all blank for now until i get that information!?
if i can finnaly fix amp i will take voltage measurements!?
can anybody help with the transistor numbers!??
thank you! AXE

4
Amplifier Discussion / Re: Solid-state guitar amplifier history -thread
« on: January 18, 2008, 12:42:33 PM »
hello,
 the u65rn has some major differances from the s-65 or the mislabeled u65rd! the transistors are samsung or sanyo, i have no way of telling but, so i was told long ago. the problem is trying to find what is "base", "emitter", and "collector" on the originals, with out a schematic i am lost. cross reference i can tell if there "pnp" or "npn" but, when buying a replacement transistor you could put it in the same way as the original and the base collector and emmiter may be in a different order than the originals!? and they cross 2 original, with 2 diff. numbers pnp's with the same number!? i believe the differance in the 2 originals was mainly how the E.B.C. were arranged(what order).the problem is with mine is half the transistors are gone(not there anymore). and the half of the remainder have been traded out.
so it would be difficult to make a schematic. this is the reason why i need one, and also i have no voltage measurements to go by!?
the u65rn schematic i can use as referance but, the transistors and cap and resistor values are quite different.
i would be glad to make a schematic if i ever could possibly get mine fixed but, what the original voltage values are, and what the original transitors were, idk?????????(only about half the transistors i know from my own personal writings from over 10 years ago i found)

oh, and i would like to add that i have tried the univox forums, with no luck at all. and i am very surprised that after all these years there is no schematic or anybody had ever made one!? i have run into people that are in need of the same schematic and thats about it!?

5
Amplifier Discussion / Re: Solid-state guitar amplifier history -thread
« on: January 17, 2008, 09:14:54 AM »
you wouldn't know who would have a schematic for a univox model 65??? mine has three input jacks, 5 knobs (volume, CLIPPING, bass, treble, and reverb). 2 footswitch jacks in back. board has 12 transistors while  what looks to be 2 power transistors(or mosfets?) off board???? some people call them  model U65RD, but it only says model 65 on back! the mother board has model S-65! thank you ! AXE

6
Amplifier Discussion / univox
« on: January 17, 2008, 08:08:58 AM »
hello,
  i am in need of a schematic for a univox model 65 guitar amplifier!
amp has 3 input jacks; 5 knobs (volume, clipping, bass, treble, & reverb); reverb & clipping footswitch jacks in back; 12"speaker; on the mother board is stamped model "S-65" made oct. 4, 1976; some people call them U65RD or model U65!!?? any information or help would be greatly appreciated! AXE

Pages: [1]