blackba
Well-known member
I finally got around to putting a pair of Svet EL34's in my Marshall 2553 silver jubilee. I haven't touched the amp other than putting in some Ei Elites 12AX7's since I bought it from Stratotone.
Anyway I checked the plate voltage: 471Vdc. The Groove tubes EL34's, one was running at 16mA, the other at 27mA
Took those out put in the Svet EL34's, biased it up to about 32mA. Checked the PI tube, checked pretty close to balanced. I put in a couple of 12AX7's in V1 and V2, one was an ARS and the other just said made in the USA.
Fired her up, oh what a difference. The amp sounded good before, but it just came alive, like a blanket was lifted off. So much power and fullness. The clean was sweeter and the distortion was just full as could be. I have never heard the amp sound this good. It was hard to break myself away from the firehouse riffs, but I had to, got to work tomorrow.
Anyway, I am very happy with the retube. the other EI elites went in my vox AC30CC1 (Chinese 12AX7's were too harsh in there). I am my jube through a marshall 1936 with 2 Classic Lead 80's. I played my beat up Contemporary tele, I mostly used the SD JB pickup in the bridge.
Only problem now is finding my new favorite preamp tube. I don't like JJ pres in genearl. EH's are okay. Ei's are hard to find and inconsistent. Maybe the tung sol reissues will be the ticket....
If anyone wants gut shots I will post those tomorrow if requested.
Anyway I checked the plate voltage: 471Vdc. The Groove tubes EL34's, one was running at 16mA, the other at 27mA
Took those out put in the Svet EL34's, biased it up to about 32mA. Checked the PI tube, checked pretty close to balanced. I put in a couple of 12AX7's in V1 and V2, one was an ARS and the other just said made in the USA.
Fired her up, oh what a difference. The amp sounded good before, but it just came alive, like a blanket was lifted off. So much power and fullness. The clean was sweeter and the distortion was just full as could be. I have never heard the amp sound this good. It was hard to break myself away from the firehouse riffs, but I had to, got to work tomorrow.
Anyway, I am very happy with the retube. the other EI elites went in my vox AC30CC1 (Chinese 12AX7's were too harsh in there). I am my jube through a marshall 1936 with 2 Classic Lead 80's. I played my beat up Contemporary tele, I mostly used the SD JB pickup in the bridge.
Only problem now is finding my new favorite preamp tube. I don't like JJ pres in genearl. EH's are okay. Ei's are hard to find and inconsistent. Maybe the tung sol reissues will be the ticket....
If anyone wants gut shots I will post those tomorrow if requested.