[sdiy] Hollow low-pressure ladder filter

[Theo]

mmm, doesn't sound right.

ECC86 is a low voltage tube, anode voltage 30V max,
but the nominal anode voltage is only 12V.
Definitely not "close" to a ECC88.

I have been looking for other tunes like the ECC86 but  could not find them
nor the US equivalent number.
>From what John Marshall wrote the 12U7 is either similar to ECC86 or the
same thing.

Theo



From: Paul Perry <pfperry at melbpc.org.au>

>
> >> Is 12U7 the same as the ECC86?
> >>
> According to a sub book here, ECC86 = 6GM8
>
> also 12U7 is 'close' to a 12AE7.
>
> If that helps.
> It might not, because the same book has 6GM8 'close' to
> our old friend ECC88!
>
> paul perry melb aust
> shall