User manual PEAVEY DPM 488

[. . . ] 679 mm x 295 mm x 438 mm Net Weight: 56 lbs. (25. 5 kg) Figure 3 500 1k Frequency (Hz) 2k 5k 10k 20k Features: · · · · · Quadratic Throat Geometry Horn 1, 000 W program, 2, 000 W peak SoundGuardTM III tweeter protection 15" BWX Black Widow® 4" VC woofer RXTM22 two-inch titanium compression driver · Top, bottom and rear flying point inserts · Multiple handles and bottom stand mount 100 Q & Directivity Index 20 Q 10 10 Di Description The QuadraTM15 is an injectionmolded two-way speaker system, engineered in the AA tradition to provide 1 20 50 100 200 Figure 4 2 500 1k Frequency (Hz) 2k 5k 10k 0 20k superior performance from a compact and durable package. The enclosure is made from very high impact injection molded polypropylene in a trapezoidal shape, with extensive ribbing and bracing, and the grilles utilize perforated metal protected by a high quality vinyl coating process, and has an integral foam inner layer for environmental protection. [. . . ] The two-way system is comprised of a 15" BWX Black Widow® woofer with a 4" voice coil, and a water-resistant treated cone and dust cap for superior environmental stability. Capable of over 500 W of continuous power handling (AES Std 2-1984), the woofer can handle a lot of sheer power. The high frequencies are handled by an RXTM22 two-inch titanium diaphragm compression driver utilizing ferrofluid, coupled to a 1" Quadratic Throat Geometry Horn, molded integral to the cabinet. This horn provides outstanding dispersion coupled with a well-controlled pattern, and a smooth, even response. Utilizing Quadratic Throat Horn technology, under US Patent 6, 059, 069, the horn has lower distortion than many popular CD horn geometries. The RX22 driver utilizes the Radialinear Planar Phase Correction System, under US Patent 6, 064, 745, which provides smoother and extended high frequency response. Input connection to the system is made via screw barrier terminal strip, one plus screw and one minus screw connection, and two 4-pin Neutrik® jacks connected in parallel are provided for signal input and daisy chaining capability. A 4-pin Neutrik switching jack is provided for bi-amping flexibility while maintaining superior signal integrity. The loudspeaker system shall be an Architectural Acoustics model Quadra 15. Frequency response This measurement is useful in determining how accurately a given unit reproduces an input signal. The frequency response of the QuadraTM15 is measured at a distance of 1-meter using a 1 Watt (into the nominal impedance) swept-sine input signal. As shown in figure 1, the selected drivers in the Quadra 15 combine to give a smooth frequency response from 64 Hz to 18 kHz. Directivity Beamwidth is derived from the -6 dB points from the polar plots (see figure 3) which are measured in a whole space anechoic environment. Q and Directivity Index are plotted for the on-axis measurement position. These are specifications that provide a reference to the coverage characteristics of the unit. These parameters provide insight for proper placement and installation in the chosen environment. The blending of the components of the Quadra 15 exhibit a desirable beamwidth and directivity (figure 3 and 4) suitable for sound reinforcement applications. Harmonic distortion Second and third harmonic distortions vs. frequency are plotted in figures 5 and 6 for two power levels, ten percent (10%) of rated input power and either one percent (1%) of rated input power or one Watt, whichever is greater. [. . . ] frequency are plotted in figures 5 and 6 for two power levels, ten percent (10%) of rated input power and either one percent (1%) of rated input power or one Watt, whichever is greater. Distortion is read from the graph as the difference between the fundamental signal (frequency response) and the desired harmonic. As an example, a distortion curve that is down 40 dB from the fundamental is equivalent to 1% distortion. 3 + 2 YEAR LIMITED WARRANTY NOTE: For details, refer to the warranty statement. [. . . ]