Is this describing a blown tube, or two blow tubes?
I installed a new set of JJ e34’s a few days ago. Last night there was a very loud POP and one of the tube went bright so I moved quickly and turned of the midmonos.
After they cooled I inspected the tubes and they seemed fine so I reinstalled them thinking maybe it was some kind of impurity within the tube. I’ve never experienced a blown tube before.
The amps ran great this evening until just now, and another POP and bright tube, but it seemed like it was the other tube, but I can’t be sure. This was followed by a low whistle or hum and I turned the amps off again.
Is this simply a run of the mill faulty tube? Could two blow in one day, or could the first one POP like that and then continue to work for another day?
Since Ive never experienced a tube fail before, could this have anything to do with the Amp, or is it just a bad tube or tubes?
Should I worry about putting my old tube back in?
Thank you,
TD
" "Output tube bias should be set immediately when new tubes are put in; then again in 15 minutes; Did you do this before and after installing the new tubes?" I did both of those things, yes, and Ive checked the old tubes' bias I just put back a few times and they have settled.
Thanks for pointing this out, just in case.
TD |
Well, Tube depot offered a refund so the quad is heading back today. I am going to order a quad of GL 77's, but I have to go on vacation which totally sucks when there's music to listen to :-). I will be bringing my portable DSD player, but... For the moment I have the 88's back in :-(
Thanks for the help
TD |
I didn’t look at the price of that accurate 151, that’s WAAAAYYYY to high. This one’s good price
Nice working B&K, $295 https://www.vintageaudioexchange.com/product/bk-tube-tester-model-625
Precision, says works B&K Sencore Mighty Mite, Calibrated (read description) Precision ANKO, working EMC,
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