Dowser
Learning to bodge again..
Well, my distortion is definitely the results of the arc burn - listening at very high volumes and with a very specific track (Useless (Kruder & Dorfmeister Remix) - Depeche Mode) I get some pretty blue lights from the area of the treble panel with damage...
If I understand the below link correctly (What Arcing Sounds Like section - great article; he has obviously done some destructive testing
), this is the burning of charge carrying particles rather than actual arcing. I need to pop the cover off again and check I guess.
http://www.audiocircuit.com/index.php?c=QUA&m=ESL-57&intlink=941-QUA-ESL_57_SP___-F-A01.htm
So, time to get into rebuilding panels - scares me shitless! I should add that they still sound fantastic, and still go way louder than my normal listening volume. I just want them working as well as they can.
Yank - shame you are not closer; I'd love a junked pair of ESLs to practice on before I rip my working panels to bits!
I re-commissioned my SE valve hybrid monos last night also and plugged them in. I need to do some work on the best taps to use, and check the bias - it has something (very good control) but loses out on dynamics compared to my ML No. 29 currently. It was 1am by then, so I went to bed.
Given that these SEs were the amps used in the best system I have ever heard (OK, it was ~17 or 18 years ago!), I will be disappointed if I cannot get the performance up. But it maybe that the (relatively) el cheapo Chinese 211 is the problem - anyone got a pair of GM70s they want to sell me?
Richard
If I understand the below link correctly (What Arcing Sounds Like section - great article; he has obviously done some destructive testing
), this is the burning of charge carrying particles rather than actual arcing. I need to pop the cover off again and check I guess.http://www.audiocircuit.com/index.php?c=QUA&m=ESL-57&intlink=941-QUA-ESL_57_SP___-F-A01.htm
So, time to get into rebuilding panels - scares me shitless! I should add that they still sound fantastic, and still go way louder than my normal listening volume. I just want them working as well as they can.
Yank - shame you are not closer; I'd love a junked pair of ESLs to practice on before I rip my working panels to bits!
I re-commissioned my SE valve hybrid monos last night also and plugged them in. I need to do some work on the best taps to use, and check the bias - it has something (very good control) but loses out on dynamics compared to my ML No. 29 currently. It was 1am by then, so I went to bed.
Given that these SEs were the amps used in the best system I have ever heard (OK, it was ~17 or 18 years ago!), I will be disappointed if I cannot get the performance up. But it maybe that the (relatively) el cheapo Chinese 211 is the problem - anyone got a pair of GM70s they want to sell me?
Richard
