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In Reply to: RE: What is harder on tubes? Turning it on and then off after 1 hour of listening posted by PhilJ on July 17, 2023 at 21:04:27
With the warmup delay and standby mode that amp employs, I wouldn't worry about turning it on/off at all. Turn it off between sessions. Unless you turn off the switch on the back, the standby mode will keep filaments warm, so thermal shock is minimized. The Jolida FX10 is, more or less, designed to be in the standby mode when not listening.
Follow Ups:
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Not at all.
They're dandy little amps. We've had two of them for the last 10-12 years. They were a killer bargain back then, but no so much these days. They used to be $500. I use one on our video rig, and my wife has the other at her she-shack in Central Illinois.
Out of curiosity, what speakers are you using with it? PSB Alpha B1's on the she-shack system, and PSB Alpha P5's on the video system.
PSB alpha B1's RULE.
I bought my daughter a set to go along with a NAD integrated. She had a party one time and someone turned up volume too much, and blew the tweeters.
So she brings them home to me for a fix. Ordered tweets and repaired. Sorta expensive.
But while I had them I connected them to a VTA ST-120, c-j MF-2250, and a NAD 3020B.
They could throw a piano image out of this world (jazz; Brubeck).
The B1's had one the best bang for the buck returns I've ever encountered. Driven by decent amplification, they add up to a lot more than the sum of their parts.
Having said that, the P5's are a definite step up from the B1's. Not the same $300 steal the B1's were, but most definitely a better, more refined speaker. I've had the P5's since shortly after they were released and they still surprise. After far too much procrastination, I recently got around to mass loading their stands and putting some of Herbie's small fat dots between them and the stands. Helped focus the soundstage and imaging improved. Very happy with the P5's doing audio duty on the video system.
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Keeping tube filaments on obviously wears out the tubes faster.
They're not running full bore in standby. Glowing and warm is all. Every system I've ever owned had/has this feature and I've never lost a tube due to filament failure.
Going from stone cold to full power in an instant is what kills filaments, not low power standby mode.
Wrong. Filament life is hours in use either at full current or minimal current. Turning on and does not burn out filaments.
We will have to agree to disagree on this one.
just look at incandescent lightbulbs...How many times have you seen them burn out at turn on as opposed to lighting the room for 20 minutes?
Right now for one of my room lights I have an incandescent that I'm using a variac on and the bulb is going on 3 years now. I always start it with 60vac and bring it up when needed. I have to do SOMETHING with the few that I still have
So then, slow turn on with an indirectly heated rectifier like a GZ34 will and does increase lifetime
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After you've had it a bit and wanna roll tubes, I highly recommend rolling the 12AX7's.
I went through several different tubes and have settled on the JJ E83CC/12AX7 Frame Grid tubes on the inputs. There's several really good sounding EL84's. JJ, Polam, Sovtek. They all sound pretty good.
Enjoy your new amp.
No surprise. My lightly modded (Clarity cap) Zu DW's have yet to meet an amp they didn't like and vice versa. This would include P-P, SET and even Class D.
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