Quote:
Originally Posted by MartyStrat54
Yeah, I can't wait to find out if the 5751 acts like a 12AX7. I mean it tested so damn high, you have to wonder what the gain factor is on that tube? 5751's were made to run quiet, so if this has more gain than a regular 5751, in a ways it becomes like a 7025, which is an extra quiet, high gain 12AX7. This is probably going to be a V1 tube with say an RCA in V2. That should produce the blues sound you like so much. I've never tested that tube in an amp, so I am really more curious about its gain factor than anything else, but after all, it's a Tung-Sol.
I have taken a look at the tubes you sent me. Thank you, BTW.  The older Tung-Sol's were made with longer plates. Now they have short plates and the Mullards have long plates. The JJ's have long plates as well. One of my 602's came with two tubes marked, "Marshall" and the other two were Sovtek WA's. I can't stand the WA or the WB, as they both are prone to microphonics and they are screechy in the mid-highs. The shame is the Sovteks look like well made tubes. Their best AX7 is the LPS and it is not recommended for combo amps (microphonics). The LPS is sort of a copy of a ribbed plate Telefunken. The difference is that you can use the Telefunken in a combo without it breaking up. So just looking at the three brands, the Tung-Sol's are made with the combo in mind. Short, tight plates.
I got real busy with work and I have to take care of business first, but I will give these current production tubes a work out to say, "Mississippi Queen." I just haven't decided what amp to use. My TSL122 is gutted out in the back and it's easy to access all of the tubes, but I thought it would be fun to try some of this out on my 401. I know how it sounds, so putting different tubes in it will catch my ear right away...for the better or worse.
Stay tuned. More to follow.
Marty |
Here is how I rank those new production tubes in my Marshall, NT and my HT Dual pedal which uses 1 12AX7.
1. Mullard is my favorite now. Use to be the Tung Sol but I like the Mullard across all 3 circuits I'm using it in. Warm, smooth but good frequency range and nice gain. Works good in any position.
2. Tung Sol next. Warm, fat pretty good gain. Seems to pay off in V1.
3. JJ's. Flat frequency, lifeless high gain tube. It was bad in all 3 circuits I used it in. Others really like them and that's cool it works for them.
I know what you mean about the Sovtec WA's. Now I like and use the LPS in my Marshall which of course is a head. I don't have to worry about it like in the combo. Usually I use it in the PI but I have tried it in V1 and it put a little hair on the gain in a good way, I thought. It did well in the NT too. Never tried it in the HT Dual.
The 5751 is going to be interesting since its testing so high. We'll see how that pans out. I'll put it in V1 and go from there with the mixes. I'll be testing it in the NT first. I finally added some delay to the NT and man does it sound tasty! I really like the amp. It ain't big and bad like the DSL but its light and toneful and has its own neat little personality that oozez's the bluzez's.
Whenever you get a chance to demo them new dogs I look forward to hearing about your opinion. Try both amps and take your time man. Have fun!