(2) Rockville RM84PRO 8" 4 Ohm 600 Watt SPL Midrange Min-Bass Car Speakers 8 Open Basket Midrange Speaker. Power Rating: 300 Watts Peak /150 Watts RMS, CEA Compliant Power Ratings. Kevlar Reinforced Black Pulp Cone, Treated Cloth Accordion Suspension, Linear Progressive Conex Spider. Kevlar Reinforced Pulp Paper Dustcap, High Tensile Expanded Steel Basket Oversize 1.5 High Temperature CCAR Voice Coil. 100oz. Magnet Structure Weight, Impedance: 4-Ohm. Mounting Depth: 3.46, Frequency Response: 88Hz - 6KHz, Sensitivity: 108dB @ 1w / 1m, Cutout diameter: 7.25", Mounting hole diameter: 4 holes- 0.197" x 0.276" This 8 midrange/midbass driver features CEA rated 300 watts peak power and 150 watts RMS. Power these with an external amp for mind-blowing presence. The bonus of being a combination driver is the music still retains clear, crisp vocals without losing the lows of a song. You will be amazed at the definition, frequency response, and super high SPL that these speakers produce. Any custom installation wont have to compromise on sound quality with the RM Pro Series. The mounting depth facilitates easy fit installations while never sacrificing quality for convenience. Extra care in the design and manufacturing are seen throughout with thoughtful touches. The cone and dust cap are Kevlar (the same material used in bullet proof vests) reinforced black pulp pape (2) Rockville RM84PRO 8&#034; Car Speakers Totaling 600 Watts Rockville RM84PRO 8 Open Basket Midrange Speaker Power Rating: 300 Watts Peak /150 Watts RMS CEA Compliant Power Ratings Kevlar Reinforced Black Pulp Cone Treated Cloth Accordion Suspension Linear Progressive Conex Spider Kevlar Reinforced Pulp Paper Dustcap High Tensile Expanded Steel Basket Oversize 1.5 High Temperature CCAR Voice Coil 100oz. Magnet Structure Weight Impedance: 4-Ohm Mounting Depth: 3.46 Frequency Response: 88Hz - 6KHz Sensitivity: 108dB @ 1w / 1m Cutout diameter: 7.25 Mounting hole diameter: 4 holes- 0.197&#034; x 0.276&#034; REVC: 3.600 Ohm FO: 88.896 Hz SD: 226.980sqCM BL: 4.827 T QMS: 3.176 QES: 0.585 QTS: 0.494 NO: 4.017 % SPL: 108 dB VAS: 34.598 Ltr CMS: 472.917u M/N KRM: 3.644m Ohm ERM: 0.708 MMS: 6.778 g MMD: 4.812m Kg KXM: 20.572m Ohm EXM: 0.554