Mounting Diagram
Wiring Diagram
Recommended Connections
The 205 is a nominal 8-ohm impedance loudspeaker with a
10-watt input capability. The 205-4T utilizes a 4-watt, 25/70.7/
100-volt universal line matching transformer with power taps
ranging from 0.50 to 4 watts.The 205-8T utilizes an 8-watt,
70.7/100-volt universal line matching transformer with power
taps ranging from 1 to 8 watts. The transformer is mounted to
the frame and the primary winding is accessible for the user
to select any of the power taps indicated in the following table
for 205-4T. For use with 100-V lines, connect to the 70.7 V
primary winding, and use the table below to determine the
wattage ratings of various secondary winding taps. Do not
use the tap marked 4 W.
All wattages marked for the various taps refer to the load on
the amplifier, with the insertion loss of the transformer being
less than 1.0 dB.
Recommended Enclosures and Baffles
The 205-8A, 205-4T, and 205-8T are designed to fit on
standard 4-inch ceiling speaker baffles. Additionally, these
loudspeakers will accommodate the use of any standard back
enclosure with a diameter of 5.5 inches or greater and a depth
of at least 4.5 inches. Larger back volumes will increase the
low-frequency output. The frequency response of a 205 in a
typical 1.0-cubic-foot and 1.8-cubic-foot back enclosure are
shown on the last page.
Mounting
The 205 may be front- or rear-mounted against either surface
of its mounting flange and requires a 110 mm (4.35 in.)
diameter cutout and a 120 mm (4.72 in.) bolt circle. Normal
fasteners up to 5 mm (0.20 in.) will fit through the eight holes
in the frame. The 205 is designed for mounting on standard
ceiling speaker baffles.
Dimensions
Polar Response in 1.8 ft
3
Sealed box 4 volt RMS of 1/3 octave
Band Limited Noise in Anechoic Environment, 20 feet on Axis.
T
4
-
5
0
2
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