by Joe_DS »
Tue Jan 15, 2008 1:30 am
Once, when I visited a fellow collector some years ago, we looked at the tip of a needle that had only been used to play only one side of one record, through his microscope. We could easily see the chisel point that had been created. After that, I only played one side of one record with a steel needle, and excessive wear has never been a problem.
In addition to the tracking force of the relatively heavy acoustic sound box, other factors contribute to wear, of course. Arguably, the most important is the condition of the sound box. You can do a lot of damage to a record by playing it with a sound box that still has its hard, original diaphragm gaskets in place, or one with a stiff, improperly adjusted needle bar pivot. (If equipped with a rubber back gasket--where the sound box connects to the tone arm--that too should be soft, as it was when first installed.)
Also important is the tone arm, which should be loose enough to move freely back and forth across the record, but tight enough to prevent the sound box from flopping slightly sideways. The same holds true if the sound box has gooseneck or later swan neck style pivot, such as those used by Victor or HMV. It should be loose enough to allow free up and down movement of the sound box, but not so loose as to let the sound box fall slightly sideways.
There has also been a lot of discussion on other boards about the tracking off-set of the tone arm. Later Orthophonic and especially HMV era gramophones addressed this, though the jury is still out as to how effective they were.