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Cronos Magnum II

New to the group, amazing amount of information.  My Rogue Audio Cronos Magnum II is about a year old and it blew a K120 tube about a month or so ago.  No big deal, I ordered some back-ups but today one of them blew again and this time with a certain amount of fury.  The port looks like it was on fire, the tube glow was intense then soft, then intense etc.  Pretty significant pop in the speakers also when I turn it on, even before it warms up.  Anyone ever experience this?

Thanks.
nwemerys
13 responses Add your response
shkong78's avatar
shkong78
515 posts
 
No I have not any problem with Cronus Magnum II KT120 for 5 years.

I guess that you had not adjusted bias correctly.

Too high bias can cause the problem.

Please contact Rogue Support to learn how to do it.
gnatster
15 posts
 
Heres a video on how to bias the Cronus. https://www.youtube.com/watch?v=8WuIQ5dAPCg
bajaed
87 posts
 
I've had my Cronus Magnum for about 7 years and have had no problems. Very unusual to hear something like this as they are built like tanks imo.

They stand behind their products. Give them a call.
jarcher
20 posts
 
If you have TWO tubes go like that in a row : best to send back to Rogue or a qualifed hifi repair guy.  Don't keep popping tubes in it - at some point you'll possibly start blowing resistors etc and things will start to get more fatal and pricey.  
nwemerys OP
2 posts
 
Thanks.  We just moved and I did not bias the tubes upon set-up so that’s likely the issue.  Also blew a small 1/4 amp  glass fuse so need to source that also.  Looks like an amazon deal since that size is near impossible to locate.  Thanks again.
nwemerys OP
2 posts
 
Thanks.  We just moved and I did not bias the tubes upon set-up so that’s likely the issue.  Also blew a small 1/4 amp  glass fuse so need to source that also.  Looks like an amazon deal since that size is near impossible to locate.  Thanks again.
wolf_garcia
4,650 posts
 
Mention to a stranger that you have a very nice Cronus Magnum. Go ahead...
simao's avatar
simao
656 posts
 
Give Rogue a call. I found them really helpful a number of years back. 
simao's avatar
simao
656 posts
 
Give Rogue a call. I found them really helpful a number of years back. 
simao's avatar
simao
656 posts
 
Give Rogue a call. I found them really helpful a number of years back. 
simao's avatar
simao
656 posts
 
Give Rogue a call. I found them really helpful a number of years back. 
simao's avatar
simao
656 posts
 
Give Rogue a call. I found them really helpful a number of years back. 
wolf_garcia
4,650 posts
 
Yeah man, that does bear repeating.
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