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EH "quality" strikes again?

Posted: Wed Dec 21, 2005 7:13 pm
by BrianH
Just got my quad of EL34-EH and they went poof on me. I had a quad of Winged C's in the amp, put in the EL34EH's, biased it up to 17w of static dissipation, let it burn for a while, and rebiased. Plugged in my guitar and it sounded fine at lower volume... as soon as I turned the volume up, the amp lost all sound and popped the HT fuse. I replaced the fuse and put the Winged C's back in, rebiased, and the amp worked fine for 10 minutes of CRANKED playing.

Posted: Wed Dec 21, 2005 7:36 pm
by Flames1950
Welcome to the EH users club. :roll:

Posted: Wed Dec 21, 2005 7:40 pm
by sub
:shock: i'm still by =C=

Posted: Wed Dec 21, 2005 7:50 pm
by BrianH
Here's a question... does the amp need slow or fast blow fuses? I've heard adamant answers on each. Most seem to say that slow blow is the way to go. I was using a fast blow... should I try playing the amp again with a 1a slow blow?

Posted: Wed Dec 21, 2005 8:36 pm
by novosibir
Yes! SloBlo needed!

Larry G

Posted: Wed Dec 21, 2005 8:38 pm
by BrianH
Stuck in a slow blow 1A HT fuse and this time I blew the 4A mains fuse (was fast blow). I had the amp guts-facing-up, and saw a nice blue spark come from somewhere under the chassis. :shock:

Is it worth trying BOTH fuses as slow blow, or do you suspect the EH tubes are buggered? Again, amp is still working like a champ with the Winged C's.

Posted: Wed Dec 21, 2005 9:34 pm
by novosibir
You can try a SloBlo mains fuse as it also shouldt be, but I think that one of your tubes is fucked up! Your blue spark!

Larry G

Posted: Wed Dec 21, 2005 10:27 pm
by Flames1950
Yeah, if it lives fine with one set of tubes but not the other, you gotta blame the tubes not the fuses.

Posted: Wed Dec 21, 2005 10:46 pm
by 5150loveeddie
NOS NOS NOS NOS not so NOS but NOS, NOS tubes rules

Posted: Thu Dec 22, 2005 4:50 pm
by rjgtr
I still think =C= SED (real Svetlanas) are as good as most NOS tubes. The only thing better is real Mullards.

Posted: Thu Dec 22, 2005 5:40 pm
by Billy Batz
Interesting opinion. Never tried them myself but that opinion warrants a little motivation to give em a try.

Posted: Thu Dec 22, 2005 5:58 pm
by novosibir
rjgtr wrote:I still think =C= SED (real Svetlanas) are as good as most NOS tubes. The only thing better is real Mullards.
And RFT's - in the US often stamped as "Siemens" or "AEG" - and they'll last at least 2 times longer than any =C= (or JJ), and at least 5 times longer than any chinese :!:

Posted: Thu Dec 22, 2005 10:09 pm
by sub
rjgtr wrote:I still think =C= SED (real Svetlanas) are as good as most NOS tubes. The only thing better is real Mullards.
It is a very good news for me :D thanks :wink:
:twisted: :twisted: :twisted: :twisted:

Posted: Fri Dec 23, 2005 10:05 am
by BrianH
Seems a lot of plexipalace guys say the EH EL34 are the closest to Mullard sounding of all the new prod tubes.

At lower volumes (that is, until they popped my amp!), I liked the EH tubes much better than the Winged C's. The EH's had this incredible hollowy, breathy mid tone that was heavenly.

Posted: Tue Dec 27, 2005 11:33 am
by BrianH
Funny, the SRS store's matching was great but they refuse to believe something could be wrong with the tubes. They're running them with no problems, they say. I've used JJ and two quads of =C='s in my amp with no problems. They thought I've made up my mind that their tubes would be defective and sent me a refund minus a 15% restocking fee. What BS! I'm going to buy from tubedepot to see if a different friggin quad works.

I'd stay away from SRS as you're not likely to get an easy refund, and will first endure many emails back and forth debating.