For example: Where is the four inches in a 4" speaker measured?
From mounting screw hole diameter? Speaker fabric diameter? ETC?

Thanks, Bill

The edge of the frame.

Paul Vina


"BillM" wrote in message
...
For example: Where is the four inches in a 4" speaker measured?
From mounting screw hole diameter? Speaker fabric diameter? ETC?

Thanks, Bill

In article ,
BillM wrote:

For example: Where is the four inches in a 4" speaker measured?
From mounting screw hole diameter? Speaker fabric diameter? ETC?

Thanks, Bill

The outer rim is the standard measurement. There are "oversized" and
"undersized" speakers which have different than normal mounting holes.