The Electro-Voice 309-8T is an 8-inch, 16-watt installation ceiling loudspeaker, with a 70.7V matching line transformer. The speaker's 8-inch low-frequency cones and high-temperature voice-coil assemblies are coaxially mounted, featuring wide-dispersion cone tweeters. The dual magnet construction allows each speaker to be magnetically, electrically and mechanically independent of the other.
16-watt coaxial ceiling component loudspeaker with 2.5" cone tweeter and matching line transformer
Transformer power taps include 1W , 2W, 4W and 8W for 70.7V lines
Two-way crossover network @ 3.0kHz with 6dB/octave tweeter protection