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Discussion Forum for Mesa Boogie Products
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PostPosted: Tue Jan 24, 2017 5:24 am 
Mark I

Joined: Thu May 29, 2008 10:44 am
Posts: 24
Location: Perth, Australia
Just wondering if anyone has experimented with using 12at7's in a dual rectifier..
Either replacing V1,2&3 or replacing just one..
Given they are a lower output,
I'm wondering if they would tame the fizz and gain or just push it back further requiring you to turn up the dials?
Any thought or experiences?

Mesa DR, TC G Maj, Berg F/Sw, EJ Strat, Ibanez RG7620 w EMG 707 781 (81 & 85) equiv

PostPosted: Sat Feb 04, 2017 8:50 am 
Single Recto

Joined: Fri Feb 22, 2013 7:31 am
Posts: 1973
Location: North Carolina
Yes, I have used an NOS (RFT as well as JAN-GE) in my Roadster. I only ventured into the V1 or V2 positions. Never try a 12AT7 in a cathode follower circuit as it will not work well. I was impressed with a NOS JAN version of the 5751 in V2. Actually sounded much better than using current 12ax7's.

TC-50, shares the same cab as the JP-2C below
JP-2C, Vertical Recto 212 (V30)
Roadster head, OS Recto slant 412 cab (EVM12L-BLACK LABEL)
Royal Atlantic head , Matching Mesa OS Recto slant 412 (V30)
Royal Atlantic Combo, black face (V30)
Mark V combo (MC90 )

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