Electro-Voice (EV) professional audio speaker.
It features a dual voice coil Differential Drive woofer with a neodymium magnet.
The frequency range is listed as 40Hz-200Hz.
Power handling varies by model,3500W.
The enclosure is described as lightweight, heavy-duty, and made with rugged DuraFlex.
The product is labeled as "MADE IN U.S.A".