MAC C-11 5751's

Joe F

New Member
Hello,

New member here. I have been lurkung for a while and really enjoy the Mcintosh fourm. I have a Mac C 11 and wanted to know if I can use 5751's inplace of 12ax7's. Are these tubes interchangeable? Maybe Ron C. can chime in. I currently use the preamp with a MC 275, Klipsch Belle's, and several different turntables. Garrard 401,301 or Thorens 124.

Thanks for the advise.

Joe F
 
Hi and Welcome Aboard Joe F!
I was hoping one our real experts would chime in but..I know you can substitute them and that you do get a bit different signature
but, as I recall, you lose an amount of gain. Here is a downloadable
cross reference guide:

http://tdsl.duncanamps.com/index.php

and an online one:

http://www.nostalgiaair.org/

Believe it or not, I have a nice new quad of JAN 5751's for about 5 years and haven't tried them out yet! :eek:

Nice rig you have. I have a long time friend with a pair of the
Belle's. Very, very nice. :) He runs them with BPC!:rolleyes: I even offered to loan him a MC2100, but he said naw.:screwy:

Carl
 
5751s for 12ax7 in the Mc pre amps are fine. No problems and have used them in all of them.

Ron-C
 
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