Owner's Manual
Page 4
... Impedance Sensitivity Input Connectors Socket Mount Diameter Dimensions (W×H×D) Weight *: EIA RS-426 A10 A12 A15 A12M A15W 2 way Bass reflex Bass reflex 10" cone 12" cone 15" cone 12" cone 15" cone 1" VC, Horn-TW - 65 Hz-20 kHz 60 Hz-20 kHz 65 Hz...safely be paralleled on one output. 4-ohm speakers, however, should not be connected in parallel, however, if you are for information purposes only. Yamaha Corp. Most power amplifiers are capable of safely driving speakers with other speakers. One of the spare connectors can safely drive load impedances...
... Impedance Sensitivity Input Connectors Socket Mount Diameter Dimensions (W×H×D) Weight *: EIA RS-426 A10 A12 A15 A12M A15W 2 way Bass reflex Bass reflex 10" cone 12" cone 15" cone 12" cone 15" cone 1" VC, Horn-TW - 65 Hz-20 kHz 60 Hz-20 kHz 65 Hz...safely be paralleled on one output. 4-ohm speakers, however, should not be connected in parallel, however, if you are for information purposes only. Yamaha Corp. Most power amplifiers are capable of safely driving speakers with other speakers. One of the spare connectors can safely drive load impedances...