Hello there,
you need to rewire them internally. There is no jumper for that externally. The absolute best resource is Graz in Australia from Apogee Acoustics. (www.apogeeacoustics.com). You can find a link to the crossover schematic here
(http://www.apogeespeakers.com/projectstech/scintilla_1_and_4ohm_crossover_schematic.gif)
Its best to send him an e.mail he can give very good instructions.
Good luck
PS: Its one of the best speaker speakers ever made. Enjoy it and don't fry your amp :-)
you need to rewire them internally. There is no jumper for that externally. The absolute best resource is Graz in Australia from Apogee Acoustics. (www.apogeeacoustics.com). You can find a link to the crossover schematic here
(http://www.apogeespeakers.com/projectstech/scintilla_1_and_4ohm_crossover_schematic.gif)
Its best to send him an e.mail he can give very good instructions.
Good luck
PS: Its one of the best speaker speakers ever made. Enjoy it and don't fry your amp :-)