Guido, ik2bcp did state that the "commercial" amp was a OM4000A driven
with 15-20 watts.
John KK9A
Jay Terleski WX0B wrote:
Leigh,
It would be too difficult to diagnose why the user had both tubes go out in
his commercial amp. Did he say it was an OM Power unit. I think he was in
Italy and should contact OM Power to figure out happened. He could return
it to them, maybe he did. Or perhaps he had one of those LA4000 that also
use FU728F tubes.
Jay Terleski
Array Solutions
214 954 7140
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