LL1660S/PPZ questions

K&K Audio / Lundahl Transformers

Welcome! Need support, you got it. Or share youe ideas and experiences.

Now that I've gotten some sleep
and can think straight.
I'm thinking of using an SRPP ECC99 cap coupled
into the 1660S/PPZ as a SE to PP phase-splitter
in the 4.5:2+2 configuration driving PP EL34's.
With a 2V input, it'll put out about 15W
according to my calculations.
I only need 10W so more than enough.
If I need more gain I can rewire it 4:2.25+2.25.
Now a couple of questions:
1) Can I use the LL1660S/PPZ with fixed bias?
(ie. a DC level on the secondaries)
Or should I use the PP model instead?
2) What is the optimal source impedance for it?
With an SRPP ECC99, the choices are;
a)510 ohm from the top tube's cathode or
b)2.3K ohm from the bottom tube's anode?
I know (a) would probably sound better,
but would (b) have any advantages
as far as the 1660 is concerned?
Or would it just ring like a bell?
Thanks
DanL

This post is made possible by the generous support of people like you and our sponsors:

Schiit Audio

Topic - LL1660S/PPZ questions - danlaudionut 06:46:31 06/24/04 (1)

Re: LL1660S/PPZ questions - KevinC 07:07:32 06/24/04 (0)

You can not post to an archived thread.