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 Post subject: Triaxis Phat Mod
PostPosted: Tue Dec 06, 2005 8:03 am 
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Bottle Rocket

Joined: Tue Dec 06, 2005 7:57 am
Posts: 1
How do I tell if a Triaxis has had the Phat mod performed on it? I'm looking to get my hands on one soon. Thanks!


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 Post subject:
PostPosted: Thu Dec 08, 2005 7:58 am 
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Mark II

Joined: Fri Aug 19, 2005 4:13 pm
Posts: 58
the Serial number of your Triaxis will tell you.

search this board for 'phat mod' and you shld find the info on it.

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 Post subject:
PostPosted: Thu Dec 08, 2005 10:33 am 
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Mark IV

Joined: Mon Jan 31, 2005 12:30 pm
Posts: 920
This is xcpointx quote on the subject from Mon Aug 29, 2005 8:30 am:
xcpointx wrote:
The TriAxis was introduced to the world in October 1992 and began with serial
#T0001. That would have been the 1.0 software version. In January 1993 the
version 2.0 software was introduced. That would have been somewhere around
serial #T1700. In 1997 around serial #T5000, all TriAxis were leaving the
factory with the Phat MOD was part of the software. The Phat MOD only affects
Lead One RED. It simply smoothes out the top-end of the Rectifier Sound making
it sound more like the actual Rectifier itself.

The "FAT" Mod

TriAxis' shipped after June 97 have the new Lead One Red as standard specification. So serial #'s below 5200 have the Lead1 Recto mod and above 5200 have the "Fat Mod".

This mod is a circuit change to mode Lead One Red. A kit is available, that will enable an authorized MESA technician to do the work. Look for one in your area, or contact MESA directly.

MESA advises that users test a new TriAxis at their local dealer to see if the new tone works for them, before having the modification done. If you are happy with the sound of LD1, you may not like the change. I believe this mod is for those users that don't use their LD1 mode often. This modification will expand their use of this particular mode.

The current tone is described as being "fat, (of course) singing soloing tones that are super smooth" The high-end has been tailored for more balance.

There are no other modifications available for the TriAxis. The most current software version for the TriAxis is 2.0. Serial #'s above 1700 are version 2.0. When you power on the TriAxis the panel lights will flash a "1" for Version 1 or "2" for Version 2.


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 Post subject: The official serial #'s.
PostPosted: Thu Nov 08, 2007 4:32 pm 
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Mark II

Joined: Thu Nov 08, 2007 4:23 pm
Posts: 63
On units that have serial #s T1631 to T8279, there will be a circuit board that is raised above the left side of the TX1 board. This is the TX4 board. This board holds the audio controls for the Lead 1 Red mode. It also holds some of the switching related to the Lead 1 Red mode. Some units before serial# T1631 have been upgraded and will have the TX4 board. After serial# T8279 the TX4 board was removed. On units after serial # T8279, there will be a small circuit board that is raised above the TX1 board. This is the TX5 board, with four 5C9 LDRs on it. These LDRs, combined with 5C9 LDR #s 26, 27, 28, 29 on TX1, replace the four original Dual Cell (P873) LDR #s 26, 27, 28, 29 that were on TX1. These control the Gain, Treble, and Bass.

In other words:
Units with serial #'s T0001 to T1630 are Version 1 w/o Midi/recording out circuit upgrade
Units with serial #'s T1631 to T8279 are Version 2 w/ TX4 "Vintage Rectifier" Lead 1 red circuit and Midi/recording out circuit upgrade
Units with serial #'s T8280 and up are Version 2 w/ TX5 "Phat Mod" Lead 1 red circuit and Midi/recording out circuit upgrade


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