Loyola Enterprises

A veteran and minority owned SDB Certified Business.


Ceiling 205

757.498.6118 Ext - 109Ceiling 205 - Call for pricing - 4-inch 10-watt


PDFCeiling 205 Spec Sheet (pdf)

The Electro-Voice® 205 is a high quality 4", full-range loudspeaker for distributed sound systems. An acoustically transparent dome encloses a small, centrally mounted free-edge cone which is used to improve high-frequency dispersion. The 205 is suitable for use in applications requiring highly intelligible speech or smooth musical reproduction. To ensure long-term reliability in installations, the 205-8A is designed to handle 10 watts continuous power (40 watts peak) of shaped white noise for eight hours per EIA Standard RS-426A 1980.


  • 4" Full-Range Ceiling Loudspeaker
  • 22-gauge stamped steel frame
  • Available with a 4 watt transformer(205-4T) or 8 watt transformer(205-8T)
  • The 205-4T allows connection to 25/70.7/100-volt line, with taps of 0.5 to 4 watts
  • The 205-8T allows connection to 70.7/100-volt line, with taps of 1 to 8 watts

Architectural and Engineering Specifications

The loudspeaker shall be a ceiling loudspeaker with a nominal diameter of 128 mm (5.1"), an overall depth of 56 mm (2.2") for the 205 and 94 mm (3.7") for the 205-4T, and shall weigh no more than 0.9 kg (2.0 lb) for the 205, 1.3 kg (2.8 lb) for the 205-8T. The voice coil shall have a nominal diameter of 25.4 mm (1.0") and length of 7.6 mm (0.3") and shall operate in a gap of not less than 1.0 T (10,000 Gauss).

The loudspeaker shall exhibit a sensitivity (SPL, 1 watt at 1 meter averaged; 200–4,000 Hz) of no less than 91 dB on axis maintaining an essentially flat frequency response with 3 dB-down points at 65 Hz and 16 kHz in a two-cubic-foot sealed box in a free field. The half-space reference efficiency shall be 0.8%. The nominal impedance shall be 8 ohms and the DC resistance shall be 6.5 ohms. The loudspeaker shall be capable of handling a continuous 10-watt (8.6 volts true RMS) shaped white-noise signal (as per EIA Standard RS-426A 1980) with a 6-dB crest factor for eight hours.

The loudspeaker shall be the Electro-Voice® model 205.

Frequency Response (±5dB) 90 Hz–18 kHz Power Handling 10 W cont. / 20 W prog. / 40 W peak
Sensitivity 1 W/1 m 91 dB Nominal Impedance 8 Ω
Max SPL/ 1m (calc) 101 dB Minimum Impedance 6.7 Ω
Voice-Coil Diameter 2.54 cm (1.0") Magnet Weight 0.32 kg (0.72 lbs)
Flux Density 1.0 Tesla Magnet Material Barium Ferrite
Speaker Frame 22-gauge stamped steel Frame Color Black
Dimensions (Dia x H) 20.6 x 5.6 cm (8.1" x 2.2") Weight 0.9 kg (2.0 lbs)
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or