4″ (165mm) Low-Frequency Transducer CMMD Lite dome with JBL Bi-Radial waveguide Rigid, heavily braced 3/4″ (19mm) MDF enclosure Rear-facing bass port increases output and extends bass response Dual gold-plated binding posts with bi-wire capability increases connection options Specifications Power Handling (Recommended)60 watts Sensitivity(2.83V@1m) 87dB Crossover Frequencies3kHz, 12dB/octave Nominal Impedance8 ohms Power Handling (Peak)240 watts Frequency Response(-3dB) 60Hz – 22kHz Maximum Recommended Amplifier Power125W High-Frequncy Transducer1″ CMMD Lite dome, magnetically shielded, in a Bi-Radial constant directivity waveguide Low-Frequency Transducer4″ (100mm) PolyPlas cone, magnetically shielded #JBL #JBLspeaker #ลำโพงเจบีแอล #jblstudio130 #studio130