Outdoor speaker series monitor audio climate power rating 80 watt system 2 way system principle passive frequency response 75 30000 hz sensitivity 87 dbmw impedance 8 ohm recommended amplifier power 10 80 power supply passive protective properties weather resistant speaker enclosure closed number of tweeters 1 treble chassis 25 mm number of midbass drivers 1 bassmidtone chassis 140 mm speaker terminals screw terminal gold plated width