Re: Tubes for Hammonds & Leslies (and more)

[Ted Weber <tweber@gatem02.netusa1.net>]

> I missed a tube curve tracer a few months ago. Bummer! 

Bummer is right!.. Those things are sacred and are as scarce as hens teeth.

>I guess it would have worked like the transistor curve tracer that
Tektronic used to > build.

Yes. And Tek made some tube tracers.


>best way to check individual toooobs for distortion would be to have an
>amp/test bed where the base band ops/parameters were known then compare each
>tube over freq range with varying inputs and loads.

Yep. You can hold the plate, sweep the grid and vice versa. Also do two-tone
test
for IMD, singe tone test for THD.
                                                                 Ted