Hi Lew:
>What model of Triplanar have you used that has such a headshell?
For sure mine is not the latest version. My memory is that I started using it around 2000~2001, and had it paired with the Allearts around 2002.
>I have owned mine for more than 15 years, and, altho it is not sitting in front of me at the moment, I could swear that the under-surface of the headshell is a flat plane with no "sides" to it. Moreover, to my knowledge there has been no change to the headshell design in the entire long history of the product.
I'd have to search for where my Triplanar is right now to check the construction details. You may be right that the headshell has no sides. But there was something in my particular Triplanar's headshell structure that impaired its compatibility with the Allearts - that was one of the very, very few times where I was forced to design and machine a part specifically to allow a cartridge to work properly in a tonearm.
>Anyway, the Allaerts cartridges are unusually wide-bodied.
Agreed. But the question is not only how wide, also where the width is located. On some tonearms, towards the rear of the headshell, the connection between the headshell top and rear is reinforced with triangular or curved pieces. A cartridge that is wide-bodied in this area could cause problems, while the same width farther forward may not cause any difficulties.
cheers!
>What model of Triplanar have you used that has such a headshell?
For sure mine is not the latest version. My memory is that I started using it around 2000~2001, and had it paired with the Allearts around 2002.
>I have owned mine for more than 15 years, and, altho it is not sitting in front of me at the moment, I could swear that the under-surface of the headshell is a flat plane with no "sides" to it. Moreover, to my knowledge there has been no change to the headshell design in the entire long history of the product.
I'd have to search for where my Triplanar is right now to check the construction details. You may be right that the headshell has no sides. But there was something in my particular Triplanar's headshell structure that impaired its compatibility with the Allearts - that was one of the very, very few times where I was forced to design and machine a part specifically to allow a cartridge to work properly in a tonearm.
>Anyway, the Allaerts cartridges are unusually wide-bodied.
Agreed. But the question is not only how wide, also where the width is located. On some tonearms, towards the rear of the headshell, the connection between the headshell top and rear is reinforced with triangular or curved pieces. A cartridge that is wide-bodied in this area could cause problems, while the same width farther forward may not cause any difficulties.
cheers!