[ICOM] Icom SP-20 Speaker questions

[flearl at msn.com]

Hello:
       I have an Icom SP-20 which is a nice speaker.  Anyone have a schematic that shows the filter network for that speaker?  Could that same filter network be substituted/installed on another speaker with any kind of results?  I'm no audio engineer but it may be a worthwhile experiment if a filter network similar to what is on the SP-20 could be applied to other speakers. 
73
Warren Flearl NØWF