Amazon.com: Eminence Professional Series Sigma Pro 18A-2 18" Bass Speaker, 650 Watts at 8 Ohms : Musical Instruments
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VRX918S Single 18 inch Neodymium Super Bass Stage Speaker - Buy 18 inch speaker, super bass speaker, stage speaker Product on Sanway Professional Audio Equipment Co., Ltd.
One unit (not pair) |18 Inch Woofer for Bass Compensation of Open Baffle or Cabinet | W-18 – Lii Song (Lii Audio), unique speaker, amplfier, quality and cost-saving parts for HiFi DIY