Originally Posted by
Mr. Widget
You need proper test equipment to know for sure. Without it and the knowledge of how to use the test equipment, your best bet is to have the driver recharged and a new diaphragm put in it... recharging is cheap, diaphragms are not, but without going through these steps, you really have no idea what you've got.
We are talking about compression drivers here, but vintage woofers also need to be charged and re-coned. All loudspeakers start out too stiff, they break-in after several hours of play and then eventually after many years of play they break down.
Widget