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What did you experience when tube rolling in a Carver Crimson 275?

Has anyone tube rolled in a Carver Crimson 275?  

I'm thinking the single 12ax7 is part of the DC restorer circuit and the two 12AT7s are the drivers. 

On the power output side, the amp is reportedly best suited to the stock Tung Sol KT120s.  Is it safe to put KT150s in ?  Has anyone tried anything other than the 120s?  I'll check with Carver on the 150s. 

I have done minimal rolling here.  I have experimented only with the 12AT7s and the 12AX7.  Stock or reissue tubes of good quality/low microphonics/noise sound great.  
jbhiller

Showing 1 response by oldhvymec

oldhvymec
5,101 posts
 
Be careful there OP, Brand is one thing swapping types is something else. It will say right in you manual what will fit.. KT90 120 150.

As far as signal valves, 12AT7, 12AX7 are the VERY popular.

I always wondered what the new Crimson was like.. Cool running from what I hear and super long valve life.. The weight isn't through the roof either..

Carver makes some Lookers for sure..  I met that guy WAY back... He was hand winding a transformer on a machine at one end of our class room.  Looked like he was a snake wrestler.. LOL
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