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Dual 18" inch TS218 Hybrid BandPass Horn Reflex Professional Audio SubWoofer Box Enclosure Cabinet - YouTube
Void Acoustics - Incubus Sub Triple 21" hybrid horn-loaded bandpass subwoofer Key Features Distinctive aluminium cabinet bracing 3 x high power 21" low frequency drivers Extended sub frequency response to 30 Hz
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Amazon.com: Klipsch Reference Premiere RP-8060FA II 7.2.4 Home Theater System with a Larger 90° x 90° Hybrid Tractrix Horn, 8" Cerametallic Woofers and (2) 14-inch RP-1400SW Subwoofer in Walnut : Electronics
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Martin WLX Hybrid Folded Horn/Reflex Loaded Subwoofer (church owned) Shipping Extra CG00EKK | Reverb
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