 
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
|
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
In Reply to: No way - E80CC/6085 is not a replacement for the ECC82/12AU7 - and may melt down or kill your amp. posted by mb-de on April 05, 2001 at 08:39:28:
I used one and have known others to use it in the driver stage of a SET amp without a problem. Your advice is correct. If you can get away with it, it is far superior to a 12AU7. Would you agree? Ask the manufacturer if you can use it is the best advice.
Follow Ups:
Hi Geo!I agree on what you say - _if_ it works, it is an interesting valve - but one has to verify that the circuit and power supply is appropriate - higher mu, different bias point and double heater current consumption may pose a problem for many amplifiers - therefore one must check the amp design or ask the amp manufacturer beforehand. Many a time it seems to work but destroys the expensive valves in a very short time, or worse...
I have used the E80CC myself - it is a nice medium-mu dual triode which - if not overloaded by inappropriate operating conditions and overbias - gives a very good and long-term stable performance. I build a little SET with E80CCs (Philips Heerlen factory) as driver and 6S4Ss (Russian 6B4Gs) as output stages - works very well indeed.
I used to have a studio record player which had a built-in preamp (modified to RIAA characteristics) with four E80CCs - when I got it, it was more than two decades old, with > 50000 hours of use on amp and bearings, and still on (1952) valves that had never been changed - on the tester they were still well inside the spec. Speaks for them, I think. The cartridge and the arm were 1970ies vintage, though - SME/Dynavector + step-up transformer.
Regards,
---mb---
======
This post is made possible by the generous support of people like you and our sponsors:
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
