Professional Speaker,Speaker Box 1.Output power: 20W*2 2.Speaker Unit:6"*2+1"*4 3.5 ... control professional active speaker, peavey speaker, jbl professional speakers View all professional active speaker, peavey speaker, jbl professional speakers, active speaker, pc speaker, pa speaker, speaker, professional karaoke ... 78 dB·Raw Material:·Electronic Component: ·Function:·Certification:· Speaker Box