Different cutting heads and other variables clearly can alter vta
Indeed. Many people apparently don't hear it, or haven't. But once you do there's no mistaking it. In fact, if I can't dial in arm height quickly and confidently it's a sure sign that something's amiss in my system.
..but what a pain in the tush!Yet it is the way to go,if one is really serious.
We started down this insane path because, like you and most of us, I'm a tweak-ophile and futz-a-holic. Paul thought I was nuts, until one day I finally stumbled onto the sweet spot for some record.
SNAP!
He literally came running into the listening room from the den (two rooms away!) "What did you just do?". I showed him. It was a microscopic turn of the Expressimo VTA collar on our old OL Silver/Shelter 901.
We were doomed. Paul literally found it painful to listen if VTA/SRA wasn't dialed in. (At Cello's he was able to set arm height on Larry's Graham just by the feel of the pressure wave coming from that rear-facing driver on his SF Extremas, without even listening. It's rather scary.)
Clearly our OL/Expressimo had to go. Adjustment on the fly became mandatory. Enter TriPlanar.
...he had the version which had a remote control for electronically setting vta,with a digital numerical readout.
SHUSH! If Paul learns there's an arm with that facility he'd trade my RX-8 for one. Then I'd have to come find you!
He had each lp's vta setting marked on the inner sleeve of ALL his "thousands" of discs.
Same here. After cleaning, each LP gets a new inner sleeve and a yellow sticky with the record's weight noted (proxy for thickness). We estimate an arm height based on experience with similar labels, weights and pressings, then find the optimal spot by listening. The exact setting from the arm's dial gets noted on the yellow sticky (to the nearest 1/200th of a revolution of the arm's dial).
Of course each new cartridge requires a different setting, but the changes are consistent. For any particular record, if the Airy 2 we reviewed liked a setting of "0" then the Airy 3 liked a setting of "8" and our UNIverse likes a setting of "18".
When we upgraded TT drive belts last summer all our settings changed again. Oy! Instead of "18" for that record with the UNIverse we're now at "29.5". Superior TT resistance to stylus drag affects how the stylus and cantilever react to the groove. This was actually quantifiable using the TriPlanar's dial and repeatable from record to record.
We may be in good shape from all that jumping up and down, but that doesn't stop us from being INSANE!
Cheers,
Doug