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Post by douglong on Jun 19, 2009 7:41:13 GMT -7
I just replaced the rectifier tube in my Maz 18 NR head with a NOS GE 5AR4 tube I purchased from Mike at KCA tubes. Sounds great, not worried about the reliability factor of the original tube any longer.
While I had the back open, I thought I'd check and see what other tubes were in the amp in the pre-amp section (JJ's for the power tubes). All three are JJ's. When I ordered my amp (waiting for it to be built and shipped), I ordered a a pair if JJ EL84's to have as a spare back up set. I also ordered some TungSol 12AX7's for the pre-amp tubes. I think I'm going to leave the JJ's for now because they sound great.
I also own a NOS Mullard 12AX7 I was thinking about dropping into the V1 spot. So, I guess my question to all is....has anyone tried a Mullard in this location? Does it improve the sound? How about the TungSol's instead of the JJ's in the preamp area?
Thanks everyone!!
Just love this amp....it puts a smile on my face every time I play through it. So responsive to picking, strumming, etc.
Doug
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Post by headshrinker (Marc) on Jun 19, 2009 8:43:12 GMT -7
I'd give the mullard a try. My guess is you would hear tighter lows and a smoother high end with a little dip in the mids. To me JJ 12AX7s are really bright. Of course it all depends on what sound you are going for.
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Post by Ed M. on Jun 19, 2009 14:15:23 GMT -7
Well if you already own the Mullard the only way to tell is to give it a try and let us know the results. A lot of it comes down to personal taste, speaker,guitar and style of music your playing. I like the TungSol's to tame some of the brightness but the JJ's do sound pretty good.
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ksks
Full Member
Posts: 120
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Post by ksks on Jun 20, 2009 9:43:41 GMT -7
On the tube info page, the list for a MAZ Jr. NR is:
12AX7S 12AX7R2 EL-84-S 5AR4
My question is: what is the significance of the S and R2 suffixes on the 12AX7? (Is the S spiral filament?)
And the -S on the EL-84?
Some online vendors list the 12ax7 with suffixes -C, -A, LPS, WA.
Any recommend brands for new tubes for the MAZ Jr NR?
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