User manual ELECTRO-VOICE 647A DATASHEET

[. . . ] Combine up to eight of these modules for a simple-but-sophisticated approach to building a line array, without the complexity associated with concert sound line array design. Each module contains two elements, each element containing an EVS2008 8" woofer and two DH2005 1. 25" highfrequency compression drivers on a HydraTM plane wave generator. A cluster of three modules powered by 1, 050W (cont. ) achieves a remarkable 135 dB of maximum (peak) SPL. Two vertical coverage angles (6° and 20°) can be combined to create line arrays optimized for spaces ranging from 12 m (40 ft) to greater than 60 m (200 ft) deep. [. . . ] Two horizontal coverage angles (90° and 120°) provide the perfect match for any space. The acoustic relation of one module to another is controlled by complex and sophisticated passive EQ/crossover networks, eliminating the need for loudspeaker DSP and multiple amplifier channels. Six 647A modules can be operated in parallel from a single amplifier channel capable of driving a 2. 7 ohm nominal impedance (e. g. Flexible frequency-shading and moduleattenuation options enable uniform front-to-back coverage. Array design and "tweaking" for a particular room are done with 647ADA (647A Design Assistant) software, downloadable at www. electrovoice. com. 647A-2082S The HydraTM ­ EV's plane wave generator The most critical information in any music signal is found in the mid and high frequencies. The number of HF devices used is one measure of whether the size of a sound system is adequate. Line arrays require a sufficient number of compression drivers to balance the coherent energy of the cone array elements. In a vertical array of multiple sound sources, it is vital to maintain minimal distance between HF elements relative to the radiated wavelength--a challenge with frequencies above 3 kHz (wavelength about 11 cm / 4"). A key component of the outstanding performance and success of EV line arrays is our unique HydraTM plane wave generator, through which the output of one HF driver is divided into discrete adjacent paths that arrive with the same amplitude and phase at the waveguide. NL4 cover plate and 647A-AM sold separately. · Mounting/Rigging System 647A has an internal, nearly invisible rigging system. Modules are connected to one another with an internal top-to-bottom metal structure that is hidden by the cover panels. This gives an 647A cluster great aesthetic appeal-- more an architectural element than a loudspeaker system. The rigging system is designed to carry an array of up to eight modules with a safety factor of >8:1. 647A-SG Standard Grid 647A-EG Extended Grid 647A-GXB (not shown) For typical tilt angles in 3 and 4 module arrays and pull-up applications in large arrays when extreme angles are required. Includes one spreader bar. For typical tilt angles in arrays taller than four modules, or extreme angles in arrays of four modules or less. Includes one spreader bar. Optional second spreader bar for use when fore-and-aft hang points are required. 647A-2082S/906 Freq. Hi-Pass Frequency Axial Sensitivity**: Max. Calculated SPL**: Horizontal Coverage: Vertical Coverage: Power Handling: LF Transducer: HF Transducer: Crossover Frequency: Nominal Impedance: Minimum Impedance: Connectors: 60 Hz - 19 kHz 45 Hz - 20 kHz 50 Hz 104 dB (1 W / 1 m) 129 dB continuous, 135 dB peak 90° 6° 350 W continuous, 1400 W peak 2 x EVS2008 8" (203 mm) driver 4 x DH2005 1. 25" (32 mm) diaphragm compression driver 1740 Hz 16 ohms 12 ohms 2 x four-contact 10 AWG Phoenix/euro block style screw terminals PI & FG versions include dual gland nut input panel cover Enclosure Material: Grille: Plywood with EVCoatTM 16 ga. galvanneal, powder coated and screened PI & FG versions - stainless steel with hydrophobic cloth Suspension: Dimensions (H x W x D): Net Weight: Shipping Weight: * Full space measurement. [. . . ] Calculated SPL**: Horizontal Coverage: Vertical Coverage: Power Handling: LF Transducer: HF Transducer: Crossover Frequency: Nominal Impedance: Minimum Impedance: Connectors: 60 Hz - 19 kHz 45 Hz - 20 kHz 50 Hz 104 dB (1 W / 1 m) 129 dB continuous, 135 dB peak 90° 6° 350 W continuous, 1400 W peak 2 x EVS2008 8" (203 mm) driver 4 x DH2005 1. 25" (32 mm) diaphragm compression driver 1740 Hz 16 ohms 12 ohms 2 x four-contact 10 AWG Phoenix/euro block style screw terminals PI & FG versions include dual gland nut input panel cover Enclosure Material: Grille: Plywood with EVCoatTM 16 ga. galvanneal, powder coated and screened PI & FG versions - stainless steel with hydrophobic cloth Suspension: Dimensions (H x W x D): Net Weight: Shipping Weight: * Full space measurement. 647A grid (sold separately) 514. 4 mm x 596. 9 mm x 358. 2 mm (20. 25" x 23. 50" x 14. 10") 37. 1 kg (81. 8 lbs) 40. 45 kg (89 lbs) 647A-2082S/920 60 Hz - 19 kHz 45 Hz - 20 kHz 50 Hz 104 dB (1 W / 1 m) 129 dB continuous, 135 dB peak 90° 20° 350 W continuous, 1400 W peak 2 x EVS2008 8" (203 mm) driver 4 x DH2005 1. 25" (32 mm) diaphragm compression driver 1740 Hz 16 ohms 12 ohms 2 x four-contact 10 AWG Phoenix/euro block style screw terminals PI & FG versions include dual gland nut input panel cove Plywood with EVCoatTM 16 ga. galvanneal, powder coated and screened PI & FG versions - stainless steel with hydrophobic cloth 647A grid (sold separately) 512. 2 mm x 596. 9 mm x 369. 1 mm (20. 17" x 23. 50" x 14. 53") 36. 8 kg (81. 0 lbs) 40 kg (88 lbs) 647A-2082S/126 60 Hz - 19 kHz 45 Hz - 20 kHz 50 Hz 104 dB (1 W / 1 m) 129 dB continuous, 135 dB peak 120° 6° 350 W continuous, 1400 W peak 2 x EVS2008 8" (203 mm) driver 4 x DH2005 1. 25" (32 mm) diaphragm compression driver 1740 Hz 16 ohms 12 ohms 2 x four-contact 10 AWG Phoenix/euro block style screw terminals PI & FG versions include dual gland nut input panel cove Plywood with EVCoatTM 16 ga. 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