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TM15
Electro-Voice TM15 15-watt 25/70.7/100-volt speaker transformer (15-, 7.5-, 3.75 and 1.875-watt taps), 1.5-dB insertion loss (32-, 16-, 8-, and 4-watt taps) SPEAKER SYSTEMS AND COMPONENTS Speaker Transformers 18863709 Telex EV Electrovoice.
409-8T
The Electro-Voice 409 series loudspeaker systems are two-way loudspeakers with eight-inch, low-frequency cones and coaxially mounted, high-temperature voice-coil assemblies with wide-dispersion cone tweeters. The dual-magnet construction allows each speaker to remain structurally, magnetically, electrically, and mechanically independent of the other. The 409 series uses a single-section crossover network centered at 2500 Hz, providing six dB of attenuation for each element outside the operating range. The 409-8E is an eight-ohm, 32-watt speaker. The 409-ST (with 15700 transformer) and the 409-4T (with 15704 transformer) offer a selection of 0.5, one, two, and four watts. The 409-8T (with 15708 transformer) offers a selection of one, two, four, and eight watts. The 409-16T (with 15716 transformer) offers a selection of two, four, eight, and 16 watts, and the 409-32T (with 15732 transformer) offers four, eight, 16, and 32 watts.
PRO-8AT5
The PRO-8A is an accurate, highly intelligible, and musical-sounding loudspeaker that is well-suited for the reproduction of voice and music.The PRO-8A employs an unusually large 1.5-inch voice coil. This coil provides increased apex-driving-point cone area and greater thermal capabilities. The result is higher acoustic power output than other brands, which translates into unmatched durability and reliability at lower levels. High frequencies are reproduced by a 1.5-inch, piezoelectric tweeter mounted directly to the pole piece of the woofer. Mounting the tweeter to a stationary surface at the apex of the woofer minimizes intermodulation distortion, and allows for improved time-alignment over other coaxial ceiling speaker designs. An acoustically transparent dust dome, mounted on the woofer cone, encapsulates the tweeter - offering excellent dust protection for both the woofer voice coil and the tweeter. The PRO-8A speakers may be used in ported enclosures where improved low-frequency response is desired. Placing the loudspeaker in an enclosure of one cubic foot with a box-tuning frequency of 75 Hz will yield a negative-three dB point of 80 Hz. An 80 Hz tuning may be obtained with a port area of seven square inches and a length of 0.75 inches.
30-watt 8-inch premium two-way ceiling speaker with 30-watt 25/70.7/100-volt transformer (30-, 15-, 7.5- and 3.75-watt taps)The PRO-8A is an accurate, highly intelligible, and musical-sounding loudspeaker that is well-suited for the reproduction of voice and music.The PRO-8A employs an unusually large 1.5-inch voice coil. This coil provides increased apex-driving-point cone area and greater thermal capabilities. The result is higher acoustic power output than other brands, which translates into unmatched durability and reliability at lower levels. High frequencies are reproduced by a 1.5-inch, piezoelectric tweeter mounted directly to the pole piece of the woofer. Mounting the tweeter to a stationary surface at the apex of the woofer minimizes intermodulation distortion, and allows for improved time-alignment over other coaxial ceiling speaker designs. An acoustically transparent dust dome, mounted on the woofer cone, encapsulates the tweeter - offering excellent dust protection for both the woofer voice coil and the tweeter. The PRO-8A speakers may be used in ported enclosures where improved low-frequency response is desired. Placing the loudspeaker in an enclosure of one cubic foot with a box-tuning frequency of 75 Hz will yield a negative-three dB point of 80 Hz. An 80 Hz tuning may be obtained with a port area of seven square inches and a length of 0.75 inches.
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