Loyola Enterprises

A veteran and minority owned SDB Certified Business.


Ceiling 405

757.498.6118 Ext - 109Ceiling 405 - Call for pricing - 4-inch 16 watt


PDFCeiling 405 Spec Sheet (pdf)

A 4", compact 16-watt full-range high performance ceiling loudspeaker. This model offers an extended 60-15,000 Hz range, ensuring clear, intelligible speech and good music reproduction.

These quality loudspeakers are designed for continuous, trouble-free service. The die-cast aluminum frame houses a magnetic structure fabricated of heavy gauge steel. The small size of the speakers allows either front or rear mounting in walls, partitions, ceilings and into volumes as low as 0.1 cubic feet.


  • 4" Full-Range High Performance Ceiling Loudspeaker
  • Structurally reinforced die-cast aluminum frame
  • Model 405-4T features a factory-mounted matching transformer
  • The 405-4T can be run from 70.7/100-V transmission lines, drawing 0.5 to 4 watts

Architectural and Engineering Specifications

The loudspeaker shall meet the following performance and structural criteria: Power rating, 16 watts; Frequency repsonse, uniform from 60 Hz to 15 kHz; Pressure sensitivity, 90 dB-SPL when measured at one meter on axis with one watt input of band-limited pink noise from 500 to 3000 Hz (ref. 20 µPa); Impedance, 8 ohms; Nominal free-air cone resonance, 90 Hz.

The voice coil shall have a diameter of 1" and shall operate in a magnetic field of 1.05 tesla derived from a Ferrite (V) magnet weighing at least 9.4 ounces. The loudspeaker shall be able to perform efficiently in a volume as low as 0.1 cubic feet. The loudspeaker frame shall be of die cast aluminum construction. The speaker terminals shall be of the spade lug type. The dimensions shall be 5.312" diameter x 2.125" deep.

The loudspeaker shall be the Electro-Voice® model 405.

Frequency Response 60 Hz–15 kHz Power Handling 16 W cont. / 32 W prog. / 64 W peak
Sensitivity 1 W/1 m 90 dB Nominal Impedance 8 Ω
Max SPL/ 1m (calc) 102 dB Distribution Pattern 90°
Voice-Coil Diameter 2.54 cm (1.0") Magnet Weight 0.27 kg (0.59 lbs)
Flux Density 1.05 Tesla Magnet Type Ferrite
Speaker Frame Structurally reinforced die-cast aluminum Frame Color Black
Speaker Cone Molded fiber Cone Suspension High-compliance foam surround
Voice Coil Copper VC Support Material Kapton®
Cone Excursion 0.125" max. peak to peak Speaker Terminals 5.2 mm spade lug type
Free-Air Cone Resonance 120 Hz
Dimensions (Dia x H) 13.5 x 5.4 cm (5.3" x 2.13") Weight 0.94 kg (2 lbs)
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or