18000rpm

Generally no. Between similar models such as Aeon vs Aeon i, or Summit vs Summit X, maybe, although there may be differences. You can...

If the diaphragm coating is still good (still electrically conductive) but its electrical charge is being drained away (faster than the...

Years ago, my SL3 panels were low and rolled off sounding... becoming unlistenable. I removed the panels and simply hosed them down...