带后罩型天花喇叭（高低音）WA275WA276WA278 〓性能特点〓 MODEceiling WA275 WA276 WA278 FULL-RANGESPEAKER/HFDRIVER 5"×11"×1 5"×11"×1 8"×11"×1 NOML POWER 20W 40W 60W LINEVOLTAGE 70/100V/4-16Ω 70/100V/4-16Ω 70/100V/4-16Ω SENSITIVITY(1m,1W) 90dB 91dB 92dB MAXSOUNDPRESSURELEVEL(1m) 103dB 107dB 110dB FREQ.RESP 60-20,000Hz 50-20,000Hz 45-20,000Hz HOLEFORMOUNTING Φ165-Φ170mm Φ198-Φ203mm Φ241-Φ246mm DIMENSIONS(H×W×L) 223×Φ196mm 241×Φ231mm 270×Φ273mm WEIGHT 2.9kg 4.2kg 5.7kg