OWI
OWI is chiefly known for creating good-quality subwoofers, wall and ceiling speakers, and great trumpet speakers for music. Laid out in 1978 with a couple of assortments of amplifiers, OWI has developed quickly by assembling a few marvelous items, incorporating Self-Amplified In-roof and Trumpet Speakers, 70 Volt In-divider Amps, etc.!