LOUDSPEAKERS SR-28212ai/SR-28212ai-40MAXIMUM OUTPUT DOUBLE 12” FULL RANGE SURROUND SPEAKER WITH INTERNAL SUBWOOFERSPECIFICATIONS: APPLICATION: Surround sound / home theater / studio reference monitor / dance clubs / two-channel stereoLF SECTION: 2 x 12" professional grade subwoofers with 4" voice coilsMF SECTION: 2 x 8” midrange drivers with 2.5 inch voice coilsHF SECTION: 1.75" professional-grade compression driver on PRO Theorem wide dispersion Axi- symmetric waveguideCROSSOVER: 8th order acoustic via DSPPOWER HANDLING: 2800W LF / 1000W MF / 120W HFSENSITIVITY: 102dB LF / 106dB MF / 108dB HFPOWER REQUIREMENTS: Tri-amplification via PRO Amplified Loudspeaker ControllerWIRING REQUIREMENTS: 6 conductorsFREQUENCY RANGE: 22Hz – 22kHz, -6dBMAXIMUM OUTPUT: 131dBNOMINAL IMPEDANCE: 4-ohms LF / 4-ohms MF / 8-ohms HFDIMENSIONS: 68" H x 14" W x 6" DWEIGHT: 117 lbs. Product Sheet Product and Install Drawing (PDF) Product and Install Drawing (DWG) DLC Speaker Preset (HF) DLC Speaker Preset (MF) DLC Speaker Preset (LF) DLC Speaker Prest (40-degree HF) DLC Speaker Preset (40-degree MF) DLC Speaker Preset (40-degree LF)