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Conrad Johnson Premium 12 - Noise when turned on

Hi,

I use Conrad Johnson Premium 12 together with PV14, speakers are JM Lab Diva Utopia. Yesterday, when I turned the premium 12 on, I can hear several 'click' noise from one channel which never happened before. It was like several separate noises that last for less than 30 seconds, then it is gone. The tubes are used for around 1 year old bought new and I listen to them 4 hour per week maxium.

Anybody has experienced the same situation?

Thank you,
jeq
jaffeassc
166 posts
 
Sounds like a tube may be ready to go bad. If the tube was already bad the amp should have blown the plate fuse which is indicated by the red light on the top of the amp chassis as mentioned above. You should try to isolate the problem quickly before the fuse blows. Once the fuse blows you will have to replace the fuse before swapping tubes around and then you must figure out which tube is going/has gone bad before the fuse blows again. I just went through this with my Premier 12’s and at $15 a piece each time you have to replace a fuse it can add up very quickly.

BTW, I use the Premier 16 with my 12's....GREAT combo.
fjn04
1,561 posts
 
I can concur 100% with both things Jaffeassc said. I used a Premier 16 1 and then an Art 1 w/ my 8A's. I only upgraded to the Art for a screamin deal dealer demo. Honestly, I felt very content w/ the 16. Never tried either in series 2. Try to hear one, or take a chance on a used one. I doubt you will be sorry. That said, if you are happy with your preamp, buy more music and enjoy.
jeq OP
17 posts
 
Thank you guys. I did as Fjn04 said and was able to find the bad tube. Now the noise is gone and everything is good again.

Also thanks for the advise on premier 16, I might try to get one and put it in my system one day.
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