JBL 15" P-1 EON Powered Full Range Speakers (2) - $399 (Mercer Island)

These speakers are Bi-Amped polypropylene and are designed to be easily transported to events. They feature a 15" woofer with neodymium magnet, a titanium diaphragm driver on a low-distortion biradial horn, 2 separate amps (130W LF and 50W HF) with toroidal transformers for driving each speaker, and an active built-in crossover. Protection circuitry shuts down amps if overheating occurs and a system of aluminum fins provides active cooling for the entire system. Exceptionally clean and lightly used.