Ruby 6L6 Duet-how do I tell if they will work in a Mesa?

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MJ Slaughter
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Ruby 6L6 Duet-how do I tell if they will work in a Mesa?

Post by MJ Slaughter » Tue Jul 17, 2012 10:08 am

I've got a new unopened pair of Ruby 6L6 tubes that were for another amp since sold and I'd like to know if they would be safe to use in a Mesa. On the label it has:

Ruby 6L6GCMSTR
IMG matched# 13, other tube has 14
PC: 34
TC: 3050

These number mean nothing to me so I hope someone here can decipher this for me.
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DC-5 head, 2x12 Stagecraft w/EVM12Ls, 1x12 Stagecraft w/EVM12L, Digitech GSP1101/Control 2, GT-100

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Mister Joshua
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Re: Ruby 6L6 Duet-how do I tell if they will work in a Mesa?

Post by Mister Joshua » Tue Jul 17, 2012 10:40 am

Should be perfectly safe. I would say that retubing with anything voids the warranty but if the warranty has expired then retubing is a great idea. It really helps get you closer to the tone you want. As far as placing the tubes if you have 4 tubes in your amp you don't need a matched quad. Most amps that have come out in the past 30 years run tubes in pairs so if you are looking to replace 2 in a set of four then find out how they run. In Mesa it's usually inner 2 then outer 2 are matched. If you already know this or only have a 50 watt then ignore me. But it should be safe.

Always remember that anytime you do any electrical work on an amp there is a chance for failure, so do this at your own risk. But nothing about the Ruby's nor the amp's bias should cause damage.

Peace,
Joshua
Guitars: ESP LTD EC-1000, ESP LTD MH-307, Epiphone Les Paul, EBMM Axis
Pickups: Dimarzio
Amps: Mesa Boogie Triaxis, 2:90
FX: TC Electronic

MJ Slaughter
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Posts: 594
Joined: Tue Oct 30, 2007 10:34 am
Location: Dallas, TX

Re: Ruby 6L6 Duet-how do I tell if they will work in a Mesa?

Post by MJ Slaughter » Tue Jul 17, 2012 11:16 am

I spoke with Ruby who said anything in a plate current, PC, from 32-50 should be fine for Mesa. Mesa just told me 34-40. I'll stick with what Mesa says but still these tubes fall into that range.
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DC-5 head, 2x12 Stagecraft w/EVM12Ls, 1x12 Stagecraft w/EVM12L, Digitech GSP1101/Control 2, GT-100

stokes
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Re: Ruby 6L6 Duet-how do I tell if they will work in a Mesa?

Post by stokes » Sat Jul 28, 2012 11:51 am

Mesa's are biased very cold,so if you plug the tubes in and keep an eye on the plates and they dont glow red/orange you will be safe.Not necessarily optimal,tonewise,but safe.

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