The OPA 15 NP is a large-format, long-throw 15-inch two-way speaker system that delivers solid, well-balanced sound with extended bass response from its trapezoidal enclosure. Its High-Q 60º x 40º rotatable constant-directivity horn delivers longer “throw” to project your sound to the back of large listening areas. If you play larger venues and need more output with fatter low-end, the OPA 15 NP is your ticket to audio nirvana.