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Amazon.com: Gravity WZP69 Warzone Series 6x9 inch 4 Ohm Pro Midrange Coaxial Loud Corrugated Surround Speaker 4-Ohms with 800W Max, 1 Speaker Car Audio High Standard Reliability Testing : Electronics
Pioneer 12" 1400 W Max Power, Single 4-ohm Voice Coil, IMPP cone, Rubber Surround Component Subwoofer BLUE TS-A123R - Best Buy
AET HT-200SB 3-1/2" Passive Surround Speaker Pair 4 Ohm
Amazon.com: Pyle 10" Car Audio Speaker Subwoofer - 1000 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 4 Ohm, 50 oz Magnet, 2
Phase Tech 3 Way Surround Speaker 4 Ohm 150W Home Audio PC-SURR-IIWH 644216209408 | eBay
Goldwood Rubber Surround 8 in. Woofer 190-Watt 4 ohm Speaker GW-8024 - The Home Depot
New pair (2) Full Range 4.5" 4 1/2" Shielded Woofer set 4 Ohm Surround Speaker | eBay
Goldwood Rubber Surround 8 in. Woofer 190-Watt 4 ohm Speaker GW-8024 - The Home Depot
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15 35W 5 Inch Amplifier Passive Speaker 3D 4 Ohm Wooden Bookshelf Speaker Home Audio Center Surround 2.0 Passive Speaker A Pair|Bookshelf Speakers| - AliExpress
New pair (2) Full Range 4.5" 4 1/2" Shielded Woofer set 4 Ohm Surround Speaker | eBay
5 Core 6" Inch Subwoofer Car Audio 4 Pieces 700W Peak Power Sub Woofer Loudspeaker Wide Range High Power Bass Surround Sound Stereo 4 Ohm, 72 mm Magnet Car Speakers WF 672 4 PCS - Newegg.com