>
>I recently aquired this Australian made amplifier. It uses a single
>4CX800A. The air flow generated by the fan is not sufficient to keep
>the tetrode at safe operating temperature which in turn causes the
>protection circuit to come on all the time (amp does not go on txmit).
>My qth is 7000 ft above sea level. The stock fan is about 103CFM. I
>added another fan piggyback to the original one but the noise is
>unbearable. Has anyone had a similar experience with this amp. Does
>anyone know of a good source from where I can get a good quality fan ?
>
Forcing enough air through an axial flow anode-cooler is best
accomplished with a centrifugal blower. Fans do not make enough air
pressure.
cheers, Jorge
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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