[march]

Found this on the Eminence website:

Wiring Configuration for 2 Speakers in Parallel

Two 4 ohm speakers = 2 ohm load
Two 8 ohm speakers = 4 ohm load
Two 16 ohm speakers = 8 ohm load

Wiring Configuration for 2 Speakers in Series

Two 2 ohm speakers = 4 ohm load
Two 4 ohm speakers = 8 ohm load
Two 8 ohm speakers = 16 ohm load

Wiring Configuration for 4 Speakers in Parallel

Four 8 ohm speakers = 2 ohm load
Four 16 ohm speakers = 4 ohm load
Four 32 ohm speakers = 8 ohm load

Wiring Configuration for 4 Speakers in Series/Parallel

Four 4 ohm speakers = 4 ohm load
Four 8 ohm speakers = 8 ohm load
Four 16 ohm speakers = 16 ohm load