Those look like 1970 speakers. Out dated. sorry been there done that.
The new Tech are Full range Neodymium magnets/alnico magnets and Full Range Field Coil
Pricey as heck, but when we are talking <<best>> gotta pay the piper.
The new Tech are Full range Neodymium magnets/alnico magnets and Full Range Field Coil
Pricey as heck, but when we are talking <<best>> gotta pay the piper.