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In Reply to: For Sale! Cheap! posted by KevinC on June 4, 2016 at 09:00:57:
Hi Kevin,
It appears that the LL1689's, either pair, might be good for a balanced line stage similar to the one on Lynn Olson's page. What might be the advantage to the "Z" version, if any in the real world? Can I assume that higher inductance might help it to match better with a tube of somewhat higher plate resistance than the 5687 family tubes in Lynn's circuit? I've had a long term interest in this sort of line stage as my power amps that have used balanced PP transformer coupled stages have been very pleasing. I don't see any specs for the "Z" version in the datasheets. Any idea of the primary inductance? How much more closely would the tubes need to be matched with this version?
Thanks,
John
De gustibus non est disputandum
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Follow Ups
- RE: For Sale! Cheap! - nerdorama 14:13:03 06/05/16 (5)
- RE: For Sale! Cheap! - KevinC 17:08:55 06/05/16 (4)
- RE: For Sale! Cheap! - Wojciech 16:01:06 08/15/16 (3)
- RE: For Sale! Cheap! - KevinC 16:07:22 08/15/16 (2)
- RE: For Sale! Cheap! - Wojciech 17:55:15 08/15/16 (1)
- RE: For Sale! Cheap! - KevinC 18:25:22 08/15/16 (0)