VPI TNT HRX table - what tonearms?

Where is the serial number located on the HRX?

It has been seven years since I started and ended this thread, but I am basically repeating the question. I have been using the JMW 12.5 arm with the TNT HRX version I have (different from normal in that the plinth is solid aluminum plus different weight platters). Has VPI a better arm or someone else one that fits this table?

Hi Suttlaw, I have a regular HRX and, after a few year, couldn't stand the JMW 12.6 tonearm any longer, so I found a way to put another one, and then two, and then three. If you take a look at my system, you will see that the slight mods required are completely reversible and self explanatory, and any local machine shop can do them. Be aware though, you have limited options for the tonearm that will take the place of the 12.5, you can only choose one whose cables don't exit from the bottom. As far as I know, the only arms with this provision are the Reed, that I have, and the Triplanar. I hope that helps, and sorry for my english.
Marco

Hello again Suttlaw, a Trans-Fi Terminator linear tonearm easily surpassed a SME IV and Graham 1.5tc on my modified VPI TNT. I've corresponded with an HRX owner who experienced similar improvement replacing a VPI 12.5 arm. The stock tonearm mounting hole can be repurposed without modification.

Stick with your 12.5 arm. It is v good.

I used to own the 12.5 with tnt5 hr, then moved to hrx with 12.6. I much preferred the 12.5. Damping trough is required imo.