Could someone who owns a set of Realistic Mach Ones tell me the diameter across the the woofer cone (just the cone itself, as if the surrounds were gone)? To the nearest 1/8 inch if possible. Looked around but can't seem to find it.
It is 11.25" I have 12 of them. The best surround kit for the Mach Ones is from Speaker Works Northwest www.speakerworks.net 541-687-0200. This srrround is the right size for the Mach Ones, in 2004 it costs $24.00
Cone sizes on the Mach One vary between 11-1/4" to 11-1/2" depending on
production date.
Mine were 11-1/4" or 11-3/8". Many of the "Mach 1" foams are sized to fit the 11 1/2 diameter so they'll be a bit big on the smaller cones but still work. I went that path.
There are indeed a few foams out there fit to the smaller sizes but you'll have to search a bit to find them