Quote:
Originally Posted by MartyStrat54
Yeah, don't judge the sound and performance of all 5751's with the one you have. It's a dog I'm sad to say. I have two Tung-Sol 5751's and they both tear up the tester. These are 1958 tubes (not for sale) that I bought on Ebay about two years ago. I used the stoutest one when I conducted my tube tests. It gave the amp a different window of tones, but it still had some fire in its belly. With a stout 12AX7 in V2 and the amp in the crunch channel, it was crunch away. It didn't miss a beat. I can honestly say that I could live with that 5751 in V1 with a high gainer in V2. It wouldn't be a problem. A lot of people (like you) tend to like a 5751, because it is a quieter tube than an AX7. That quiet translates into a chiming clean channel. Again, it allows different tones to be shaped because of its design.
Personally, I don't think that I would want to go as low as an AT7. I tested with a real good one and I wasn't pleased with it. It was okay, but the punch seemed to be missing.
Marty
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Prolly right about my 5751. I'll send it to you one of these days soon and for curiosity sake lets see where it tests at. What the heck its not like I'm getting any use out of it. Sounds like I need to get a good 5751 cause I do like the mix of a lower gain tube with a 12AX7.
The NT is kind of different as far as having much punch. Even with 2 12AX7's there isn't really punch. There's presence but not really punch. Of course I'm use to a 50 watter that has awesome punch. I think 15 watts has alot to do with that as well as the EL84's that are in it. That's why I say I don't hear or feel like the AT7 is robbing the amp of much impact when overdriven.
I will pay close attention to that and see if there is a lessening of any impact. I've been pop'n them tubes in and out like crazy to gage the differences. I'll take a little break and see if I notice more when I come back fresh.
What I do get from the mix is great sustain and the notes are present. That hasn't been neutered. I like the tone's texture mixed with a 12AX7. Remember I tried 2 AT7's and it neutered the overdrive. So I know the AT7 can take away. The 3 12AX7's I liked together out of all the combinations were the Mullard and the Jan Philips 12AX7A as well as the RCA 12AX7A. The Mullard mixed with either of these 2 NOS was pretty good. Worth using for sure. I just can't take the RCA's out of the Marshall to run in the NT cause I like them where they are.
I will say I like the new Mullard 12AX7 in both amps and my HT dual. Nice tone frequency range & gain characteristics and has been a solid performer so far.
Joe