4″ Open-Ceiling Speaker

One 4 inch (102 mm) coaxial driver with BroadBeam Ring™ technology for consistently smooth high frequency directivity. Includes hanging hardware with galvanized steel cables and hanging bracket for fast, easy and secure installation. Unit may be hung or mounted direct-to-conduit via locking cover plate. Enclosure constructed of injection molded ABS with glass fiber reinforcement for lasting durability in indoor or outdoor applications. 16 ohm impedance for easy daisy chaining in low voltage systems. Aluminum grille with protective powder coated finish. Built-in thermal fuse. Ceramic input terminal accepts up to 10 gauge plenum rated signal wire and includes thermal fuse. Suitable for use in voice alarm applications subject to EU regulations EN60849 and BS5839-8. Unit ships in eco-friendly, recyclable packaging. UL 1480 UEAY and UL 2239 listed. Included accessories: hanging hardware, weather plug, cover plate, AC-RSEZ-HH-10, and AC-RSEZ-HH-10.

Specifications: RS42-EZMounting hardware included
Nominal Impedance16 ohm
Impedance (min)16.0 ohm
Sensitivity dB @ 2.83V/1M82.4dB
Sensitivity dB @ 1W/1M (2)85.4dB
Frequency Response (± 3 dB)140 Hz - 22 kHz
Frequency Response (±10 dB)100 Hz – 22 kHz
Max. Program Power40W
Max. Continuous Power RMS20W
Max. Power SPL @ 1 M100.0dB
Max. Power SPL @ 4M87.0dB
Directivity Factor (Q) (Averaged 100Hz - 10kHz, @ 2kHz)2.8 (Average 100 Hz - 10 kHz) 5.5 (2kHz)
Directivity Index (DI) dB (Averaged 100Hz - 10kHz, @ 2kHz)4.4dB (Average 100 Hz - 10 kHz) 7.4dB (2 kHz)
Tap Selector6 Position rotary switch with transformer bypass
70.7 Volt Transformer Taps20w / 100.0dB
100 Volt Transformer Taps (dB)20w / 100.0dB
25 Volt Transformer Taps (dB)2.5w / 91.0dB
Transformer Options25 / 70.7 / 100 Volt option with a 16 Ohm direct
Transducer - Low Frequency Driver0.75" (19mm) Silk dome w/ BroadBeam Ring™
Transducer - High Frequency Driver4" Polypropylene Cone with Butyl Rubber Surround
Network Type: Low Pass12dB per octave, 2nd order
Network Type: High Pass6dB per octave, 1st order
Coverage Angle (-6 dB @ 2 kHz)100
ColorsBlack or white
Inputs4 position ceramic terminal connector
Height (SM = Height)199.6 mm / 7.9 in
Diameter (SM = Width)189.5 mm / 7.5 in
Carton length241.3 mm / 9.5 in
Weight1.4 kg / 3.1 lb
Shipping Weight1.8 kg / 4.0 lb
Accessories OptionalBeam Clamp (AC-BC-1), Split Loom Tubing (AC-SLT-10), Hanging Kit (AC-RSEZ-HH-10), Hanging Kit (AC-RSEZ-HH-20), 50′ Hanging Kit (AC-RSEZ-HH-50), Forged Eyebolt (AC-FE1), Snap Link (AC-SL-1)
Packaging1 per box
Regulatory - ULApproved UL1480A
Regulatory - CEApproved
Regulatory - IPnot planned
Regulatory - EN54approved