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Abaca Audio 4 Inch High-End Shielded Woofer 4 ohm: perfect for replacing/upgrading or building bookshelf, surround, sound bar speakers, or other diy speaker projects.
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Aiyima 1pcs 4 Inch Subwoofer Speaker Unit Hifi 4 8 Ohm 100w Woofer Sound Speaker Home Theater Deep Bass Loudspeaeker - Speakers - AliExpress
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TL3001A-4 Professional Speaker 12 Inch 325 Watt RMS Woofer 4 Ohm With and SPL of 91 dB | Mavin the Webstore
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1pcs 4inch HIFI Subwoofer speaker 4ohm 30W 4 layer voice coil subwoofer speaker 4 6 8ohm T1062|Portable Speakers| - AliExpress
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