15 inch Eminence Professional Series Replacement Speaker – Eminence Speaker, LLC
Amazon.com: Hifonics BRW15D4 3000 Watts 15 Inch Brutus Car Audio Subwoofer with Heavy Gauge, Powder Coated, Aluminum Die-Cast Basket, Dual 70 Oz Magnet, 3 Inches Voice Coil - Dual 4 Ohm - 15 in : Electronics
Down4sound PRO-FAB 15 | 15 Sub Box | Single 15-Inch Ported Subwoofer Enclosure Box - Down4Sound Shop
Community V2-215SB Dual 15-inch Subwoofer - Black | PSSL ProSound and Stage Lighting
Amazon.com: Gravity Car Vehicle Subwoofer Audio Speaker - 15 Inch Competition Grade Pressed Paper Cone, 2 Ohm DVC, Advanced Air Flow, 7000W Power for Stereo Sound System Warzone GW15D2 (2 Subwoofers) : Electronics
Best Buy: Hifonics Alpha 15" Dual-Voice-Coil 8-Ohm Subwoofer Blue/Black HAW15D4