Professional speaker, loudspeaker, sound speaker, audio speaker, speaker stand, pro audio sound speaker box, pa audio system. Professional speaker, loudspeaker, pa speaker, audio speaker, Professional audio sound equipment, pa audio ... SD700 or I1 for 2pcs SD800 or I2 for 4pcsDispersion...................................90ºH×50º VHorn throat size..........................1"(25mm)Voice coil size ...