Rauliruegas: Finally an answer I can live with; it's mainly in the cartridge itself! I know Audio Technica was instrumental in producing the Telarc recording; I have other older cartridges which can track the cannons, for exampe vintage Shures, and on many brands of TTs such as Onkyo, Kenwood, Technics, etc. of the 70's and 80's. TTs with Servotracer arms I also have found can track the recording, as on vintage Denon or Sony TTs. My Rega RP8 with Clearaudio Virtuoso is not up to the task, nor are other modern cartridges from Denon, Ortofon, Sumiko, and Rega, among others.
Telarc 1812 revisited
I've posted several threads about the trackability of this record and have received many scholarly answers, with emphasis on physics, geometry, compliance, weight, angles,price and all sorts of scientific explanations about tonearms, cartridges, VTA, etc, etc. Let's cut to the chase: I have a 1970's Pioneer 540 in the garage I bought for $5 at a thrift store plus an Audio Technica cartridge for which I paid $30 This combo. tracks the Telarc 1812 perfectly without problems while my $4000 Rega and $1200 Project bounce out of the grooves.. I'd really finally like to get some explanation and resolution as to this discrepanccy