Deaf Bonce Pair Apocalypse 8" 600W Peak 4 Ohm Midrange Speakers AP-M81AC This Listing Includes: (2) Deaf Bonce 8" Midrange Speakers AP-M81AC SPECIFICATIONS: Nominal Diameter: 8" Nominal Impedance: 4 Ohm MAX Power Handling: 600 Watts RMS Power Handling: 300 Watts Sensitivity (1w/1m): 97.50dB Frequency Response: 110Hz ~ 10KHz MOTOR: Voice Coil Diameter: 2" Winding Material: CCAW Cone Material: Paper Surround Material: Cloth Basket Material: Steel Magnet Material: Ferrite THIELE & SMALL PARAMETERS: Equivalent Volume: Vas - 19.80L Free Air Resonance: Fs - 88Hz Total Factor: Qts - 0.39 Force Factor: BL - 9.10 DIMENSIONS PER SPEAKER: Overall Diameter: 8.2" Front Mount Baffle Cutout: 7.56" Overall Depth: 3.3" Peak power rating of 600 Watts / 300 Watts RMS Nominal impedance: 4 Ohm Frequency response: 110 Sensitivity (1w/1m): 97.50dB Overall Depth: 3.3"