User manual ELECTRO-VOICE DL15X EDS

[. . . ] (Do not expose the cone to direct water or sunlight. ) The DL15X is a true high-fidelity woofer in every sense, being capable of high output, low distortion and solid bass response. DIRECTIONAL CHARACTERISTICS The directional characteristics of the DL15X in a 4. 0-cubic-foot vented enclosure were measured in Electro-Voice's large anechoic chamber. The test signal was one-third-octave filtered pink noise centered at the frequencies indicated. A full spherical measurement system, which is completely compatible with the AcoustaCADDTM computer-aided design program, was used. [. . . ] Step-down extends system low-frequency response by increasing amplifier power at certain frequencies instead of enclosure size. In step-down, the enclosure is tuned to a lower frequency than normal. This increases system output in the region of the new tuning frequency and reduces output slightly in the region of original tuning. The smoothly falling response which results can be equalized to FIGURE 10B -- Predicted Low-Frequency Response in a Typical Enclosure (6. 0 ft3 tuned to 30 Hz) FIGURE 11 -- Maximum SPL at 1 Meter in Typical Enclosure (4. 0 ft3 tuned to 35 Hz) Dimensions (see Figure 10), Outer Diameter: 384 mm (15. 13 in. ) Overall Depth: 165 mm (6. 48 in. ) Net Weight: 8. 6 kg (19. 0 lb) Shipping Weight: 10. 2 kg (22. 5 lb) DESCRIPTION The DL15X low/mid-frequency reproducer is a 15-inch, 8-ohm driver designed for professional high-level, high-fidelity monitoring and sound reinforcement. Its design assures linear, low-distortion output, high power capability and efficient heat transfer. Incorporated into the design are three exclusive Electro-Voice innovations. patent #4, 547, 632), a Teflon® -based coating, is applied to the inside diameter of the top plate. 4 Occasional violent power peaks of several seconds may expand a transducer's voice coil into contact with the top plate, causing failure. The coating lubricates any rubbing contact and provides electrical insulation between the coil and the steel top plate. The Thermo Inductive Ring (TIRTM) and Flux Demodulation Device (FDDTM), also included in the DL15X design, are aluminum castings fastened to the pole of the magnet. Teflon® is a registered trademark of DuPont. provide a new system 3-dB-down point that is about 0. 7 that of the original. To achieve a similar response extension without equalization would require an enclosure at least twice the size. The equalization required is a second-order underdamped high-pass filter with a Q of 2 at the enclosure tuning frequency. This characteristic provides a boost of 6 dB at tuning and a 12-dB-per-octave roll-off below. The roll-off protects the woofer from overexcursion due to subpassband signals (see below). Note that the boost does not affect system instantaneous peak output, which is related only to the speaker's displacement ability and effective diaphragm area. 7, noted earlier, describes a number of step-down enclosures and the associated peak boost frequencies for the DL loudspeaker covered by this engineering data sheet. The Electro-Voice XEQ-2 and XEQ-3 active crossover/equalizers offer step-down equalization with a variety of peak-boost frequencies, appropriate for a broad range of specific systems. XEQ-2 and XEQ-3 engineering data sheets are available from ElectroVoice. SUBPASSBAND SPEAKER PROTECTION Below the enclosure tuning frequency, cone excursion increases rapidly. Since acoustic output is also falling rapidly, there is no utility in driving the system with signals much below tuning frequency. [. . . ] Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you. Other Rights: This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Electro-Voice Speakers and Speaker Systems are guaranteed against malfunction due to defects in materials or workmanship for a period of five (5) years from the date of original purchase. The Limited Warranty does not apply to burned voice coils or malfunctions such as cone and/or coil damage resulting from improperly designed enclosures. [. . . ]