The drivers are wired Series/Parallel for a 16 ohm impedance, which is compatible with nearly all guitar amplifiers. 
Featuring American made Eminence drivers. 10”s speakers are a pair of Eminence 10516 (16 ohms, 75w) guitar speakers.
Choose your 12” speakers from the following options:
Eminence Man O War (16 ohms, 120w).
Eminence Cannabis Rex (16 ohms, 50w).
Eminence Texas Heat (16 ohms, 150w).
Swamp Thang (16 ohms, 150w).