User manual ELECTRO-VOICE DL12W

[. . . ] (Do not expose the cone to direct water or sunlight. ) The DL15ST is a true high-fidelity woofer in every sense, being capable of high output, low distortion and solid bass response. DL15ST Low-Frequency Reproducer Electrical Connections The DL15ST is fitted with a pair of plated, frame mounted connectors with color-coded ends. Electrical connection is made by pushing down, inserting wire completely through the rectangular slot and releasing pressure. One conductor of #9 stranded, #8 AWG solid, a pair of twisted #15 AWG stranded or a pair of #14 AWG solid conductors will fit. Typical Amplifier Size 400-800 watts per woofer is the optimal amplifier size. Amplifiers of this size will allow maximum output with minimal risk of speaker damage when properly used. [. . . ] The vent is driven to full acoustic output by a relatively small motion of the speaker cone itself, acting through the air contained within the enclosure. The excursion of the DL15ST at these frequencies is much reduced compared to sealed or open-back enclosures, directly reducing harmonic distortion and the possibility of speaker bottoming. Thiele-Small parameters are provided so designers can tailor the response to suit their needs. Normally Tuned Enclosures A 1. 8 cubic-foot enclosure tuned to 55 Hz has a smooth extended response to below 50 Hz. The 1. 1 cubic-foot enclosure "bumps up" above 70 Hz but has less extended low-bass output. umps up" above 70 Hz but has less extended low-bass output. Directional Characteristics The directional characteristics of the DL15ST in a 1. 1-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. All directional information was measured at 20 feet. Figure 1 shows the horizontal and vertical beamwidths. Beamwidth is the angle at which the horizontal and vertical polar responses have decreased in level by 6 dB when compared to the axial frequency response. Figure 2 illustrates the total directivity of the DL15ST. The directivity factor R (Q) is the relative value, at a point, of the DL15ST when compared to an ideal spherical response. The directivity index, Di, is calculated by the formula: Di = 10 log10 R. Figure 1 Specifications: Usable Axial Frequency Response in Typical Enclosure (4. 0 ft3 tuned to 40 Hz), Swept One-Third-Octave Pink Noise, 4 Volts at 10 Feet, Anechoic Environment, Normalized for 1 Watt/1 Meter : . . . . . 42 Hz VAS: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 liters (6. 89 ft3) QES: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 30 OMS: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4. 55 QTS: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 28 RE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6. 0 ohms 0: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4. 63% SD: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 086m2 (132 in. 2) MMD: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 062 kg (0. 137 lb) LE : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. 6mH CMS: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0. 19 mm/N RMS: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Aluminum Voice-Coil Insulation: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Polyimide 220°C rating Voice-Coil Form: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Polyimide Back Cover: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black, advanced synthetic elastomer Net Weight: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]