4″ Coaxial Open-Ceiling Speaker

One 4.0 inch (102 mm) polypropylene woofer and one 1.0 inch (25 mm) convex titanium tweeter with FerroFluid cooling. Includes UL listed hanging hardware with adjustable galvanized steel cables and integrated SpeedClamp™ self-locking cable grip for fast, easy and secure installation. Also includes Euroblock connector and terminal weather boot. Patented ZeroReflection™ enclosure technology for optimal sound reproduction and cabinet rigidity. Easy access five-position selectable tap switch for 25-, 70.7- and 100-volt applications with transformer bypass position simplifies ordering and inventory tracking. Steel grille with protective powder-coated finish for lasting durability. Average sensitivity of 82.5 dB offers high-output capabilities and reduced amplification costs. UL 1480 (UEAY) approved.

Specifications: RS400iMounting hardware included
Nominal Impedance4 ohm
Impedance (min)4.5 ohm
Sensitivity dB @ 2.83V/1M85.5dB
Sensitivity dB @ 1W/1M (2)82.5dB
Frequency Response (± 3 dB)95 Hz - 20 kHz
Frequency Response (±10 dB)76 Hz – 22 kHz
Max. Program Power40W
Max. Continuous Power RMS20W
Max. Power SPL @ 1 M95.5dB
Directivity Factor (Q) (Averaged 100Hz - 10kHz, @ 2kHz)3.5 (Averaged 100 Hz - 10 kHz) 4.6 (2 kHz)
Directivity Index (DI) dB (Averaged 100Hz - 10kHz, @ 2kHz)4.2dB (Averaged 100 Hz - 10 kHz) 6.6dB (2 kHz)
Tap Selector5 Position rotary switch with transformer bypass
70.7 Volt Transformer Taps20w / 95.5dB
100 Volt Transformer Taps (dB)20w / 95.5dB
25 Volt Transformer Taps (dB)2.5w / 86.5dB
Transformer Options25 / 70.7 / 100 Volt with voice coil / 4 Ohm direct
Transducer - Low Frequency Driver4" Polypropylene Cone with Butyl Rubber Surround
Transducer - High Frequency Driver1 in / 25 mm Convex Aluminum w/ BroadBeam® Waveguide
Network Type: Low Pass12dB per octave, 2nd order
Network Type: High Pass12dB per octave, 2nd order
ColorsBlack or white
Port length3.75 in
Inputs4 Pin, 5.08 mm Euroblock for individual or daisy chain connection
Height (SM = Height)223.5 mm / 8.79 in
Diameter (SM = Width)195.6 mm / 7.70 in
Weight2.3 kg / 5.07 lb
Shipping Weight3.2 kg / 7.05 lb
Accessories OptionalSurface-Mount Bracket (AC-RS-SM5), Beam Clamp (AC-BC-1), Split Loom Tubing (AC-SLT-10), Hanging Kit (AC-RS-HH-10), Hanging Kit (AC-RS-HH-20), Hanging Kit (AC-RS-HH-50), Forged Eyebolt (AC-FE1), Snap Link (AC-SL-1)
Packaging1 per box
Tech SheetArray
Regulatory - ULApproved 1480
Regulatory - CEApproved
Regulatory - IPnot planned