Re: Tube amp with 2.5 Ohm speakers??

In article <PPcEj.312846$7Q7.304141@xxxxxxxxxxxxxxxxxxxxxxxxxx>,
"Iain Churches" <IainNG@xxxxxxxxxxx> wrote:

I have been asked about using a tube amp with
low impedance speakers (2.5 Ohms)

This doesn't seem like a big deal if you are specifying the output
transformer. Is the questioner asking what to do with an existing
amplifier that doesn't include an output transformer with a 2.5 Ohm
secondary configuration option?

Does anyone have experience with this kind
of setup?

No, sorry.

First thoughts are that with PPP in triode
mode one could probably achieve a DF of 10.

I don't understand what SE vs. PP vs. PPP has to do with the DF?
Assuming you are talking about ZNFB amplifiers, I always thought the DF
was determined by the plate resistance of the tubes being used along
with the turns ratio of the output transformer? All other things being
equal I wouldn't think PPP would provide a DF any different than plain
old PP, or even SE for that matter.


Regards,

John Byrns

--
Surf my web pages at, http://fmamradios.com/
.

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