Riddle me this about 12AV7's!!

[sideways2]

Morning!!

So this Sonic Frontiers pre I have can be jumpered for 12AT7 and 6DJ8 tubes...and seeing that I'm not a big fan of the 6922 sound, I am opting to move the jumper over and grab some varieties of 12AT7's.

Here is what I've found so far that'll cross over: 6201, 6211, 5965, 7062, 6414, 6829, 6679, 7728, E180CC, ECC81, E81CC, ECC801S, CV4024, M8162, CV455, 6060, A2900

K...tell me, where does the 12AV7 come in??

I've read that it is the same tube as the 5965 but not a military tube which the 5965 is. True or false?? If true, then it should drop in with no issues correct??

I had a Jolida hybrid a couple of years back and I found, with my tastes, that the 5751 tube was excellent as a repalcement for the standard 12AX7's that the amp took.

I am hoping that the 5965\12AV7 will accomplish the same for me with this pre

In the mean time, I have a NOS Brimar 6060 coming LOL!!!

Thanks kindly!!!

 

[Tom Bavis]

12AV7 isn't very linear - better to stick with the other numbers you mentioned. 5965 is supposed to be better...

 

[sideways2]

Thanks!!!

Appreciate it!!

 

[dsndblm]

The 5965 is a great tube but requires more filament current than the 12xxx tubes. Make sure your p/t can handle the extra load.

 

[et land]

I really do not hear much difference from a 12at7 tube. Can these damage an amp . I roll them sometimes with different music messing around.. I see the answers above but can someone go into more detail on these? I also have some 12ay7 tubes. I know about gain but can these do damage. Thanks in advance? By the way they sound good.. just have to turn the volume up some,, understandable.

 

[TriodeLuvr]

K...tell me, where does the 12AV7 come in?? I've read that it is the same tube as the 5965 but not a military tube which the 5965 is.

The 12AV7 is not the same as a 5965. Plate curves are different, gm is different, Rp is different, and mu is different. Regarding distortion, Sylvania Resistance Coupled Amplifier Data indicates the 12AV7 is roughly equal to a 12AY7 and substantially better than a 12AT7. The latter two have of course seen frequent use in hi-fi and guitar applications. The only issue I see with the 12AV7 is its higher filament current (450mA). Here's an excerpt, all driven with the same voltage:


Jack