Premier retubage d'un dual rectifier Mark II

Y'a pas de quad Mesa Manu. Ils ne vendent que par duet (ou tube seul) et c'est pour cette raison que le grade (couleur) est bien utile pour obtenir deux paires aux caractéristiques identiques.

MESA® PREMIUMGRADEVACUUMTUBES
MESA® Matched and Tested - Premium Quality Guaranteed - We start with only the finest tubes available from around the world. We then test and match every tube, while under the stress of actual operating conditions, to the tightest, most demanding specifications in our industry with the use of our proprietary, aerospace designed tube analysis system called Robotube™. We accept only the “finest of the finest” and back them with the best warranty in the business for a minimum of six months!
Available as Duets
6L6 GC STR 440 (DUET)
5881 6L6 STR 425 (DUET)
6V6 GTA STR 417 (DUET)
EL-34 STR 447 (DUET)
NOS EL-34 STR 450 Siemens (DUET)
EL-84 / 6BQ5 (DUET)
Available as Individuals
12AX7 (INDIVIDUAL)
SPAX7 (INDIVIDUAL)
12AT7 (INDIVIDUAL)
5AR4 RECTIFIER TUBE (INDIVIDUAL)
5Y3 RECTIFIER TUBE (INDIVIDUAL)
5U4G RECTIFIER TUBE (INDIVIDUAL)
5U4GB RECTIFIER TUBE (INDIVIDUAL)


Codes :
Red
Yellow
Green
Gray
Blue
White
The Red's and Yellows are so cold they may only draw between 15-20ma in a DR or any other 4 6L6 Mesa at -52V. The Green to White have higher natural plate current and draw more bias. They incrementally go up by a few MA's until you get to White. Even the white lables will usually only get you to 50-60 % MPD. More or less, they are safe to run in any Mesa. The only difference you will have to be careful is in Simul-Class amps. Both 6L6's and EL-34's above green may run too hot and wear quickly and die, or poof out. I have basically tried every Mesa color code with a Bias meter to see how they draw out.

c'est pourquoi il ne faut pas acheter de tubes Mesa

Achète un quarte de tube gradé pour ton ampli, regarde le lien que je t'ai indiqué précédemment, ou sinon, tu fais mettre un potar de BIAS.



Curieux, mon sujet sur le BIAS des Mesa est passé inaperçu, je m'attendais à une polémique, mais non.

Les premiers intéressés font les morts car maintenant y'a des preuves (de leur mauvaise foi), les autres s'en foutent car ils avaient déjà constatés