Speaker Driver #4A30 (4? 30W coax)

With smooth musical sound, wide dispersion (135 degrees) and small architectural footprint, this 4 inch 30W driver is engineered for very high quality paging and background music in hotel lobbies, stores, terminals and similar venues where clear, intelligible communication with accurate reproduction is key.

FEATURES

• 4 in. (EIA 5 in.) 30W driver has the capacity to deliver a wide angle of sound distribution at 2kHz with uniform response and clear audibility to ensure complete coverage with minimum units. Includes 10 oz. magnet, 1 inch copper voice coil, and polypropylene cone with half-roll rubber surround for long cone travel and good edge damping. Post-mounted liquid-cooled tweeter is 1 in. diameter balanced drive dome with first order high-pass filter.

• Frame:  20-gauge stamped steel with black enamel finish and zinc-plated back-plate.

• Power Rating:  30W

• Frequency Response:  81Hz-20kHz (±6dB) and 50Hz-20kHz (±8.1dB) with crossover at 5kHz

• Mounting Depth:  2.25 in.

• Mounting Bolt Circle:  4.688 in.

• Dispersion Angle:  135 degrees conical

• Average Sensitivity:  87.8dB

• Made in U.S.A. with global components

• Meets or exceeds industry standards

A&E SPECIFICATIONS

The coaxial 4 inch (EIA 5 in.) driver shall be Lowell Model 4A30. It shall have a high frequency transducer (tweeter with 1 in. diameter balanced drive dome) and low frequency transducer (4 in. diameter polypropylene cone). A built-in electrical crossover network shall be employed for proper frequency divisions. Crossover frequency shall be at 5kHz with a first order high-pass filter. The 4A30 shall be capable of producing a uniform audible frequency response over the range of 81Hz-20kHz (±6dB); 50Hz-20kHz (±8.1dB) with dispersion angle of 135 degrees @2000Hz -6dB. Average sensitivity shall measure 87.8dB (SPL at 1W/1M). Power rating shall be 30 watts (EIA 426B). The low frequency voice coil shall have 1 inch diameter and operate in a magnetic field derived from a ferrite (ceramic) magnet with nominal weight of 10 oz. The high frequency voice coil shall have a 0.53 in. diameter and operate in a magnetic field derived from a Neodymium magnet with nominal weight of 0.06 oz. Voice coil impedance shall be 8 ohms. The assembly shall have a round, structurally reinforced,stamped 20-gauge steel frame to maintain precise mechanical alignment. Overall diameter shall be 5 inch with four round and four obround holes equally spaced on a 4.688 in. diameter mounting bolt circle. Mounting depth shall not exceed 2.25 in. External metal parts shall be finished in black enamel paint or zinc plating.