User manual ELECTRO-VOICE DH7 EDS

[. . . ] DH7-8/DH7-16 3-Inch High Frequency Transducer Key Features: · · · · · · · Very smooth frequency response Geometrically optimized titanium diaphragm 75mm edgewound aluminum voice coil Secure screw down terminals Compact and rugged 1. 4" bolt-on exit diameter Available in 8 and 16 ohms General Description: The Electro-Voice DH7 high frequency compression driver is capable of high acoustic output over a wide frequency range. [. . . ] Response: 1000-20, 000 Hz Power Capacity1: 75 Watts, 150 Watts Cont. Recommended Crossover : 1000 Hz or Higher Nominal Efficiency: 25% Sound Pressure Level2: 113 dB, HP420 Horn (1 Watt @ 1 Meter) 111 dB, HP640 Horn 109 dB, HP940 Horn Throat Diameter : 1. 38" (35mm) Voice Coil Diameter : 3" (75 mm) Voice Coil Wire: Pure Aluminum Ribbon Diaphragm Construction: 0. 05 mm Pure Titanium Dome and Surround Electrical Connection: Screw Terminals (Accepts a pair of 12GA Wires Polarity: Positive Voltage to Positive Terminal Produces a Positive Acoustic Pressure Flux Density: 1. 7 Tesla Net Weight (each): 10. 0 lbs (4. 5 kg) Shipping Weight: 11. 0 lbs (5. 0 kg) 1 Power capacity per AES standard. Continuous pink noise, 1000 - 10000 Hz with a 6 dB crest factor, 2 hours. 2 Sound Pressure measured on axis in the far field with 1 Watt input of band-limited pink noise from 1000 - 5000 Hz and calculated to 1 Meter equivalent by inverse square law. General Description (Cont'): Pure aluminum rectangular voice coil wire is used to obtain the highest sensitivity. Proprietary bonding and winding technologies assure unsurpassed reliability and performance of all DH7 diaphragm assemblies. Electro-Voice's commitment to precision compression driver manufacturing and modern design techniques assure the DH7 user the highest level of audio and engineering excellence. Frequency Response (On a Tube): Note: Frequency response and impedance of the DH7-16 driver attatched to a 38mm (1. 5") diameter plane wave tube, using one watt input (4 Vrms). Dimension Drawings: Frequency Response (On an HP94 Horn): Top View Note: Frequency response and impedance of the DH7-16 driver attached to an HP94 Horn, measured on axis in the far field using one watt input (4 Vrms). [. . . ] For customer orders, contact Customer Service at: + 1 952 884-4051 Fax: + 1 952 887-9212 For warranty repair or service information, contact the Service Repair department at: 800/685-2606 For technical assistance, contact Technical Support at: 866/78AUDIO Specifications subject to change without notice. 12000 Portland Avenue South, Burnsville, MN 55337 Phone: 952/884-4051, Fax: 952/884-0043 www. electrovoice. com © Telex Communications, Inc. [. . . ]