Lonestar Reverb Tube Limitations

[Bluewail]

I'm finding that I cannot use a 12AT7 in the Reverb Driver/Return (V3) on my Lonestar Special. Tubes that work well in the same application in other amps, a Mullard CV4024 and an EH 12AT7, are rattling and noisy in the Lonestar. Anyone else finding the same? Is the circuit just not right for an AT7?
Thanks

 

[domct203]

Chances are that the reverb circuit was designed around the tube that was in it from Mesa, most likely a 12AX7.

Dom

 

[Bluewail]

Yep, it was designed to be a 12AX7. In many, if not most cases, I've been able to sub a 12AT7 in to lower the overall intensity of the verb and less "sproing". In the last Mesa I owned, a Blue Angel, I did that sub and it worked very well for me. Doesn't seem to work in the Lonestar Special but then again I just may have some bad tubes. That's why I wondered what experience other folks may have had.

 

[Guitarzan]

Try a 5751.