Genalex GL GZ-34 Rectifier...Did I just get a bad one? Five months seems


like a terribly short lifespan. I bought it in May and spent the extra money to get a "good" tube. It sounded good while it lived. But it went in a fiery inferno last weekend.  Fortunately it only took out a fuse.

It was running in a Bob Latino VTA ST-70 Dynaco amp. It's a great amp but runs the rectifier a bit hard from my understanding. However the original tube lasted at least 3-4 yrs IIRC. I tried a SS rectifier. YUK!! I put the tube (a spare Sovtek) back in place I've had good luck with the KT-66 Genalex GL's and they have a good reputation (I think). Is this just the luck of the draw. IOW, even a new tube can have a short life span? Or is this odd? Is there any way to avoid it? I'd buy another Gennalex GL if it will last. But I can buy 2 Sovteks for the price of one GL. Sovtek sounds good too.

FWIW, The tube that failed was cryo treated. Could that make a difference in a rectifier tube? As always, Thanks for your help.
artemus_5

Showing 1 response by mars2k

Yeah I have simple needs.  I have a fully modded Modwrite Oppo UDP205 with Modwright PS 9.0 I've been using roughly 6 months. The Sovtek 5ar4 rectifier in the PSU has blown twice,  the first time it took out its own fuse ans well as my power conditioner's fuse. That was after less that 2 weeks  of having in my system. The second just recently blowing the PSU fuse only.  What gives? are the Sovteks electical specs so lowsy they don't work with this board design or is the likely a flaw in the PSU board. I have gone on to NOS Mazda/Phillips 5R4GYS. This is a beautiful tube it just oozes quality and sounds great.