Re: Dynaco ST-70 II output tube options

In article <47A120F1.7E4D0D5B@xxxxxxxx>, maxhifi <no@xxxxxxxx> wrote:

As for the MC30 those are not actually 6L6s-they are a 1619 as I
recall, a metal tube more or less interchangeable with a glass 6L6.
They are uprated from a prewar metal 6L6.

1614 --- good point Brett, I never knew the tube actually had higher ratings,
as I haven't actually owned an MC-30, but a TDSL search on the 1614 reveals it
is indeed a different animal from a metal 6L6, with significantly higher
ratings.

The 1614 has a higher screen voltage rating than the 6L6, doubtless an
important feature for the MC30 design, but when I look at TDSL it
appears that the 6L6 has a higher plate dissipation rating than the
1614, and it was the plate dissipation rating that Bret said was lower
for the 6L6.


Regards,

John Byrns

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