Electro-Voice 205 Series, 205-8A, 205-4T, 205-8T Specification

205 Series

4-Inch Full-Range

Ceiling Loudspeakers

COMMERCIAL

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 model 205-8A. When fitted
with a transformer that allows connection to 25/70.7/ 100-volt
systems of 0.5 to 4 watts, the loudspeaker shall be referred
to as the model 205-4T. When fitted with a transformer that
allows connection to 70.7/100-volt systems of 1 to 8 watts,
the loudspeaker shall be referred to as the model 205-8T.

(per EIA RS-426-A 1980 (85 - 15,000 Hz bandlimited pink noise,
6-dB crest factor):

Nominal: .................................................................. 8 ohms

Minimum: ............................................... 6.7 ohms (230 Hz)

(at 1 Meter, 1 Watt Input, 200 - 4,000 Hz Average)

Dimensions:
205-8A / 205-4T / 205-8T

Diameter: ................................................... 206 mm (8.1 in.)

Height:

205-8A .......................................................... 56 mm (2.2 in.)

205-4T / 205-8T: .......................................... 94 mm (3.7 in.)

Net Weight:

205-8A: ........................................................... 0.9 kg (2.0 lb)

205-4T / 205-8T: ............................................ 1.3 kg (2.8 lb)

Transformer Input:

205-4T ................... 25 or 70.7 volt line (100 volt operation)

205-8T ............................. 70.7 volt line (100 volt operation)