A complete in-wall speaker package, the Electro-Voice EVID FM 4.2 has a 4" low-frequency cone, titanium coated dome tweeter, and uses a crossover network.

The EVID FM4.2 flush-mounted loudspeaker system from Electro-Voice is a complete in-wall loudspeaker package, consisting of a bezel assembly, grille, rear enclosure, two-way loudspeaker, and an internal line-matching transformer. The loudspeaker features a 4” low-frequency cone and high-temperature voice-coil assembly along with a 4” long excursion passive radiator and titanium-coated dome tweeter. The EVID FM4.2 utilizes a crossover network, centered at 3,600 Hz, that provides 16-dB-per-octave tweeter protection outside of its operating range. A comprehensive protection circuit shields the woofer and tweeter drivers from excessive power levels.

The EVID FM4.2 utilizes a transformer that offers a selection of 1.75, 3.75, 7.5, 15, or 30 watts delivered to the loudspeaker system using either 70-V or 100-V lines. The wattage is selected via a convenient switch on the front baffle. The unit can also be operated as an 8-ohm speaker via the same front panel selector switch.

The perforated grille is finished in semi-gloss white powder-coated enamel. The baffle and bezel are constructed from heat-resistant ABS. The rear enclosure is constructed from zinc-plated, steel. The rear enclosure provides an optimum internal volume, ensuring extended low-frequency performance. It is constructed from heavy-gauge, rugged steel. The steel rear enclosure is FEA-optimized to minimize panel resonance. The entire enclosure is less than 4” deep, providing an easy installation into nearly any tight wall or ceiling space. A rear cover, with provisions for a junction box fitting, provides access to a 4-pin terminal block that allows direct connection to the speaker and provides passthrough to additional speakers.