2PCS 4" Subwoofer Woofer High Power Speaker Long Stroke 4Ohm Round Speakers | eBay
1 Pieces Full Frequency Speaker Driver Mixed Coating Paper Cone Dual Magnets Deep Bass 4/8ohm 60W For AKISUI (Color : Golden 4ohm(Round)) : Amazon.ca: Electronics
Design Engineering 050311 Boom Mat Speaker Baffles, 4" Round Slim (Pack of 2) : Amazon.ca: Electronics
6.5" Three-Way Sound Speaker System - 180 W RMS/360W Power Handling W/ 4 Ohm Impedance and 3/4'' Piezo Tweeter For Car Component Stereo, Round Shaped Pro Full Range Triaxial Loud Audio -
Kenwood KFC-1095PS 4" Round Performance Series 3-Way Speakers | Galeries de la Capitale