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PostPosted: Tue Mar 04, 2008 6:34 pm 
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Mark IV
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Joined: Wed Jan 26, 2005 12:32 pm
Posts: 599
Location: Berkeley, California
Elpelotero wrote:
I hear much more sag (less tightness) with the 5u4gB than with the big 5u4G, which I find to be much tighter. That's the only real difference. I tested both types of tubes in the same amp several times and that was the conclusion I drew.

Mesa actually posts a similar description in their tube catalog.


Interesting... I hadn't read their tube catalog descriptions before - thanks for pointing that out.

Of course, their descriptions are manufacturer-specific, based on what Mesa sells. If you compared an RCA 5U4G to a Tung-Sol 5U4GB, you'd find the opposite experience (i.e. more sag from the G than the GB).

- Thom


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PostPosted: Tue Mar 04, 2008 7:16 pm 
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Single Recto

Joined: Sun Feb 19, 2006 11:43 am
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Location: NYC
Of course, their descriptions are manufacturer-specific, based on what Mesa sells. If you compared an RCA 5U4G to a Tung-Sol 5U4GB, you'd find the opposite experience (i.e. more sag from the G than the GB).

I gotta go with the Wolf on that.Even the data will show that the 5U4GB is a sturdier upgrade of the 5U4G,any percievable difference should make the GB tighter sounding,and less sag.But,again,this a case of how these things are subjective.I am not surprised that Mesa would post a description that is contrary to what the numbers in the data make clear,when it comes to tubes,Mesa tends to say whatever will sell more tubes.


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PostPosted: Thu Aug 19, 2010 11:04 am 
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Bottle Rocket

Joined: Thu Aug 19, 2010 10:59 am
Posts: 1
Location: Sao Paulo - Brazil
Hello guys!

I have a triple recto and 2 replacement 5U4GB tubes. Can I use both together? 2 5U4GB and 1 5U4G.

Tx


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PostPosted: Thu Aug 19, 2010 5:08 pm 
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Single Recto

Joined: Sun Feb 19, 2006 11:43 am
Posts: 1459
Location: NYC
rodris wrote:
Hello guys!

I have a triple recto and 2 replacement 5U4GB tubes. Can I use both together? 2 5U4GB and 1 5U4G.

Tx

Sure.


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