4 Premium RoundPart Number: MA-5104 Low magnetic field, mid power speakers ideal for high power stereos or mid power amplifiers. They feature powder coated aluminum grills and a power handling capability of 140 watts/pair.FeaturesLow magnetic field speakercoaxial type speakerAvailable in white onlySpecificationsFrequency Response: 70Hz to 20KHz (2 way)SPL: 89dBCone Size: 4 (102mm)Peak Power: 140W/pairMounting Depth: 2-1⁄16 (52mm)Speaker Impedance: 4 ohmOverall Diameter: 5-7⁄16 (137mm)Cutout Diameter: 4-⅛ (104mm)Weight: 1.30 lbs. per speaker