Re: Tube amp with 2.5 Ohm speakers??

"John Byrns" <byrnsj@[EMAIL PROTECTED]
> wrote in message
news:byrnsj-B19AFC.14221621032008@[EMAIL PROTECTED]
> In article <icGdnWG3ob5ImnnanZ2dnUVZ_h6hnZ2d@[EMAIL PROTECTED]
>,
> "Arny Krueger" <arnyk@[EMAIL PROTECTED]
> wrote:
>
>> "Bret Ludwig" <bretldwig@[EMAIL PROTECTED]
> wrote in message
>> news:631ca48a-23cd-44e9-83d5-dc166e4feb6f@[EMAIL PROTECTED]
>>
>>> ed 16/8/4 secondary which means only
>>>>> half the secondary is used for 4 ohm applications in
>>>>> the first place. Using a four winding
>>>>> series/parallelable output is an aid, of course, but a
>>>>> purpose designed 2 ohm output is highly preferable.
>>
>>>> OK Bret.  That's what I had in mind - series/parallel
>>>> windings with a 2.5Ohms option.  Thanks for the
>>>> confirmation.  But are there any other considerations?
>>
>>> Use of a separate tertiary for NFB is highly desireable
>>> in such an amp to avoid a lot of ad-hockery and to
>>> float or ground the output as desired.
>>
>> Or just scale the RC network.
>
> What exactly does "scaling the RC network" have to do
> with using a separate tertiary for NFB?

It means that you may not have to mess with the tertiary, just change some

parts values.