User manual ELECTRO-VOICE AP2600 DATASHEET
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Manual abstract: user guide ELECTRO-VOICE AP2600DATASHEET
Detailed instructions for use are in the User's Guide.
[. . . ] The test signal was one-third-octave pseudo-random pink noise centered at the frequencies indicated in Figure 2. The curves show horizontal (side-to-side) dispersion when the enclosures long axis is vertical. Additional typical information is provided in Figure 3 which shows 6-dB-down beamwidth versus frequency. Figure 4 shows the directivity factor and directivity index versus frequency. [. . . ] To obtain the spectrum, the output of a white noise generator (white noise is a particular type of random noise with equal energy per bandwidth in Hz) is fed to a shaping filter with 6-dB-per-octave slopes below 40 Hz and above 318 Hz. When measured with the usual constant-percentage analyzer (one-thirdoctave), this shaping filter produces a spectrum whose 3-dB-down points are at 100 Hz and 1, 200 Hz with a 3-dB-per-octave slope above 1, 200 Hz. This shaped signal is sent to the power amplifier with the continuous power set at 800 watts into the 3. 5 ohms EIA equivalent impedance for the TL606DW (52. 9 volts true rms). Amplifier clipping sets instantaneous peaks at 6 dB above the continuous power, or 3, 200 watts peak (105 volts peak). This procedure provides a rigorous test of both thermal and mechanical failure modes. SUBPASSBAND SPEAKER PROTECTION Below the enclosure tuning frequency, cone excursion increases rapidly. Since acoustic output is also failing rapidly, there is no utility in driving the system with signals much below the tuning frequency. While such signals may be in the program material, they are often extraneoussuch as from record-surface irregularities (strong 5- to 25-Hz components) or a dropped microphone. The DL15W very-lowfrequency reproducer is ruggedly designed and has a high maximum excursion before damage (±0. 5 inch). However, high-output subwoofer systems such as the TL606DW should be protected by a high-pass filter with a 3-dBdown corner frequency of about 0. 8 the enclosure tuning frequency. Below the corner frequency, a roll-off of 12-dB-per-octave is usually sufficient. Corner placement (acoustic eighth space) doubles efficiency again and guarantees excitation of all room modes. (Such placement for maximum efficiency and room-mode excitation is not necessary and may not be desirable or possible for a variety of reasons, including aesthetics and building design. )
The TL606DW can also be successfully operated away from any nearby acoustic boundaries, particularly when multiple systems are used for increased output ability (see Use in Multiples section). SUSPENDING TL606DW ENCLOSURES The TL606DW is designed for typical cinema stage (behind-the-screen) applications where low-frequency systems are mounted on platforms, behind the screen and some distance above the stage floor. The TL606DW is not designed to be self-suspended, and if suspended, must be supported and hung in a way which does not depand on the structure of the TL606DW itself for support. The HS6 and HS7 kits allow the TL606DW to be hung safely in a variety of orientations. The combination of the correct HS kits and TL606DW enclosure has been certified by an independent structural engineer to be safe and secure. Each HS kit consists of a steel tube, two brackets, two eyebolts and the necessary fasteners. The installer must assemble the HS kit by first drilling two holes into the TL606DW enclosure, in predefined positions, and then screwing the brackets onto the steel tube, which passes through the enclosure. An eyebolt is inserted in the T-nut in the rear panel of the enclosure to provide a pull up to aim the enclosure. Full instructions and hole locations are included with each cabinet and HS kit. A TL606DW requires a single HS6 to suspend it horizontally, or a single HS7 to suspend it vertically. [. . . ] Obtaining Warranty Service: To obtain warranty service, a customer must deliver the product, prepaid, to Electro-Voice or any of its authorized service representatives together with proof of purchase of the product in the form of a bill of sale or receipted invoice. A list of authorized service representatives is available from Electro-Voice at 600 Cecil Street, Buchanan, MI 49107 (616/ 695-6831) and/or Electro-Voice West, at 8234 Doe Avenue, Visalia, CA 93291 (209/651-7777). Incidental and Consequential Damages Excluded: Product repair or replacement and return to the customer are the only remedies provided to the customer. Electro-Voice shall not be liable for any incidental or consequential damages including, without limitation, injury to persons or property or loss of use. [. . . ]
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