Tube Amp Archive

OK thanks checked out that site just now for the first time, lots of stuff on the hi-fi tube amp applications/systems.

There are external jacks on the back of the unit but it is the on-board console speakers that I was thinking about changing. I have some vintage jensen duax 12" 16ohm drivers. The exisitng 12" 8 ohm speakers are OK but wanted to try the jensens. Would the external jacks be in parralel with the on bo...

OK I see that now thanks, also...notcied that the output transformer shows a 16ohm tap. Could I install 16ohm speakers on this amp to replace
the current 8ohm ones by changing the taps?

I have found the schematic for my fleetwood console amp. Not sure how to read it yet so was wondering if there is in fact a need/way to BIAS the EL84's

Oh and Structo I kept all the original tubes, can't recall what make they were when I pulled them out i think they were RCA and also Fleetwood tubes. I can open the unit and check as I stored them inside with the boxes from the new ones. The guy (Joe) that owned this system was a big time ham radio ...

Thanks for the coments, OK so if I get around to changing the power cord I will use a grounded plug (three prong) and attach the green to the amp chassis correct?

I have contacted radiodaze for info on schematics etc. if anyone else can advise on were to find info please do tell. Thanks all

Thanks to all for the responce. Trust me I have gotten the message about those voltages and will take extreme caution if I am ever inside the amp. I would first build the discharge lead as desribed and proceed with caution. I have always been interested in electronics/electrical workings so I have a...

Hi All New to this forum and to the world of tube amps. Basically I am looking for any advice that can be offered here even if it is not in my tread questions. I have a 1965-67 Model 4078C Fleetwood HI FI stereo console in fine working order. I have changed out the 4 EL84 output tubes and the 5 12AX...