Goldwood Sound, Inc. Stage Subwoofer, Shielded 5.25" Woofers 130 Watt Each 8ohm Replacement 4 Speaker Set (GW-5028/S-4) 4 Goldwood Sound GW-5028/S shielded 5.25" woofers, 70 watts RMS and 130 watts Max each, 62 - 9,000Hz frequency response, 85dB SPL, 8ohm 1" aluminum voice coils, 16oz magnets, poly mica cones with rubber surrounds, fully shielded Stamped steel frames, overall size is 5.5", fits enclosure hole size of 4.5", mounting depth is 2.75", designed and engineered in the USA Use for pro DJ speakers, pro PA speakers, pro karaoke speakers, live sound speakers, fixed installation speakers, studio monitors and home audio speakers This listing and price is for 4 Goldwood GW-5028/S pro audio woofers