Electro-Voice EVID-S4.2T 70V Surface-Mount Loudspeaker
The EVID-S4.2T is the transformer-tapped version of EV's 4 inch two-way surface speaker, built for background and paging runs where a single amplifier feeds a long chain of ceiling and wall boxes at constant voltage. A 15 W transformer offers 3.7, 7.5, or 15 W taps at 70V or 100V, and a rear switch bypasses the transformer for standard 8 ohm operation on a shorter, dedicated run.
The cabinet is a fire-rated ABS enclosure rated IP54 for damp locations, and the included bracket rotates 90 degrees horizontally and 45 degrees vertically so the same box works on a wall or angled down from a ceiling edge. It ships in black or white and can be field-painted to match a room.
| Driver complement | 4 in (102 mm) woofer, 0.75 in (20 mm) tweeter |
|---|---|
| Frequency response (-10 dB) | 75 Hz - 20 kHz |
| Transformer taps | 3.7 W (70V only), 7.5 W, 15 W, or 8 ohm bypass |
| Maximum SPL | 104.5 dB (1 m, calculated) |
| Sensitivity | 86.5 dB (1W/1m) |
| Coverage | 110 degrees nominal (-6 dB), horizontal and vertical |
| Environmental rating | IP54 per IEC-60529 |
| Mounting | Included bracket, 90 deg horizontal / 45 deg vertical rotation, up to 12 AWG wire |











