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Amazon.com: Seismic Audio - Empty 212 Guitar Speaker Cabinet - 2x12 PA/DJ PRO Audio - Loaded with Everything but Speakers. Includes Grill, Wire, Jack Plates, Handles, etc. : Musical Instruments
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Amazon.com: Seismic Audio - 412 Slant GUITAR SPEAKER CABINET - 4x12 400 Watts PA/DJ PRO AUDIO : Musical Instruments
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Amazon.com: Seismic Audio Speakers 15” Bass Guitar Speaker Cabinet, 300 Watts RMS Speakers, 1 x 15 : Musical Instruments
Is metal a good choice for speaker boxes or enclosures, how does it affect the sound quality? - Quora
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