The PE institutional enclosures are designed to address a wide variety of applications. For the low frequencies they use a 6 1/2" polypropylene long throw woofer with rubber surrounds and an extended voice coil. This speaker has exceptional free air resonance and very accurate reproduction. For the high frequencies, they utilize a 4" diameter dome tweeter, which provides an extended nominal frequency range up to 22kHz. They sound great, and come with a 4-pt. threaded template on the rear which fits a variety of wall mounts, including the Omni Mount wall-mount or ceiling-mount adapters.
The i-Series cabinets are finished with an environmentally-safe white water-based polyurethane. This durable finish may be used as the final installed color, or may serve as a base-coat in installations where specific color matching with the room is desired.