The Atlas sound BIA-100 is the original reflex horn featuring a bi-axial design with twin air columns and exponential bell for wide-angle coverage with a linear frequency response. The horn provides excellent acoustic loading maintained to a 350 Hz low-frequency roll-off and optimizes delivery of high and mid-range signal levels. BIA-100 is designed for use with Atlas Sound PD Series compression drivers and models having 13/8″ -18 male threads and 0.707″ dia. throat openings. The easily-mounted horn features the labor-saving patented gimbal-mount bracket assembly (U.S. Patent # 4,325,529) which allows for directional positioning up to 180° vertically and horizontally. It includes a steel bracket, cast-mounting base and provisions for flange installation. The weather-resistant, non-glare matte black foam horn is resistant to resonance. Bracket assembly is finished in durable epoxy.

The Atlas Sound Model PD75T is a fully environment-resistant 75 Watt driver for indoor or outdoor applications and is recommended for use in expansive and/or high ambient sound-level areas. This model features a sound chamber, phasing plug, magnetic-structure components machined to optimum tolerances, 2″ voice coil and offers a plane wave frequency response of 100Hz – 3.7kHz.

This unit, which is comprised of a transformer with 16Ω bypass, will meet a variety of applications. The PD75T provides screw-type terminals for matching direct to the 16Ω voice coil impedance and a built-in varnish impregnated, multi-tap 70.7 volt line-matching transformer. Corrosion-resistant terminal connections are protected by a transparent, impact-resistant plastic cover.

The PD75T is terminated in a standard 1 3⁄8″-18 thread male couplings for use with screw-on horns. Internal components are enclosed within a protective die-cast and polycarbonate injection molded housing and finished in grey baked epoxy.

Product Features

  • High-Efficiency Bi-Axial Horn Provides 130° x 60° Wide-Angle Sound Coverage
  • Nominal Frequency Response of 350-8,000 Hz for High-Intelligibility Voice, Signaling and Full-Range Music in Indoor/Outdoor Applications
  • Patented 180° Gimbal-Mount for Installation Flexibility
  • Extended Frequency Response Range for Optimum Intelligibility
  • 75 Watt Power Rating