... (RMS) 3. 93db (SPL) 4. 33-2000Hz karaoke woofer speaker( W126503) MODELW126503TYPEMID-BASSGENERAL SPECIFICATIONS Nominal Diameter300/12mm/inchRated impedance8ohmPower handing capacity250wattsSensitivity93dBFrequency ... Weight4kgShipping Weight4.5kg Package Size580X330X170/2pcsmm 12inch karaoke woofer speaker( W126503)