Electro-Voice ND357 User's Manual
Contents
1. Ev Electro Voice N D Series MUSIC MICROPHONES Supercardioid Dynamic Vocal Microphone The Electro Voice N D357 is a supercardioid dynamic microphone utilizing a revolutionary neodymium alloy to form the EV exclusive N DYM magnet with four times the power potential of conven tional microphone magnets With a computer optimized design the N DYM magnetic structure provides unprecendented sensitivity while the more uniform magnetic field lowers distortion during peak sound pressure levels The large diaphragm contains 50 percent more surface area than conventional designs and is reinforced to prevent breakup The result is an extended high frequency response with an open transparent sound quality The exceptional sensitivity of the N D357 combined with the inherently low noise of a dynamic transducer insures a superior signal to noise ratio ready for digital recording and sampling To further reduce noise a highly effective hum bucking coil is used to cancel hum from lighting and other sources The N D Series design also features a unique shock mount totally Surrounding the microphone element Combined with the elastomeric Warm Grip handle and windscreen bumper this vibration isolation system greatly reduces all forms of handling noise An acoustifoam pop filter is included to reduce both wind noise and p pop breath sounds The uniform supercardioid polar pattern of the N D357 insures superior gain before2. ectional microphones Thus closer working distances can be used with N D357 to reduce the risk of sound system feedback ringing while preserving intelligibility The N D357S is equipped with an on off switch that shorts the mic element when set to off position permitting the user to have local muting control The dynamic element of the N D357 will provide reliable operation in humidity and temperature extremes adverse conditions that would render condenser microphones useless For years of trouble free operation on the road the N D357 utilizes an all metal core construction from the hardened windscreen to the Warm Grip covered handle Patent Pending CERTIFIED PERFORMANCE Every N D357 is inspected by a quality control technician and subjected to a computer controlled test system that verifies over 80 different performance parameters After the performance meets or exceeds our rigorous standards the actual measured frequency response of the unit tested is plotted on a Certificate of Performance and included with the microphone This certificate guarantees that each N D357 will perform to the exacting standards established by EV design engineers 100 quality assurance testing WARRANTY LIMITED Electro Voice N D Series Microphones are guaranteed against malfunction from any cause for a period of two years from date of original purchase Also these microphones are guaranteed without time limit against malfunct
3. feedback in live applications and better isolation in the studio at all frequencies compared with other directional microphones with widely varying polar characteristics FREQUENCY RESPONSE o enn ee eT H SS a SS HSS Ser i SSS e a m EE SEN SS oe Sarria SE gt E e oa SE ARS E 10 e e Faa E a 100 200 500 1000 2000 5000 710000 20000 FREQUENCY IN HEATZ N D 357 3575 SPECIFICATIONS Frequency Response Close Response Far Response Polar Pattern Open Circuit Voltage Sensitivity Dynamic Range Equivalent Output Noise Impedance Weight Dimensions Height Diameter Shank 25 to 20 000 Hz 55 to 16 000 Hz supercardioid 2 2 mV Pascal 1000 Hz 53 dB where 0 dB 1mW 10 dynes cm 141 dB 17dB 0 dB 0002 dyne cm 150 ohms balanced Lo Z 7 05 ounces 200 grams 7 12 inches 181 mm 2 05 inches 52 mm 0 80 inch 20 mm S kHz 18 kHz OPERATION The high and low frequency response of the N D357 can be extended by positioning the microphone closer to the sound source as documented in the specification section This baffle and proximity effect occurs when the microphone is placed within 12 inches of the sound source and increases as the working distance is reduced The low frequency response is tailored to provide bass boost without the boominess of many dir
4. ion in the acoustic system due to defects in workmanship and material Other provisions apply please see warranty card enclosed with microphone or write for complete details ELECTRO VOICE INC 600 Cecil Street Buchanan Michigan 49107 MANUFACTURING PLANTS AT Ml BUCHANAN MI E NEWPORT TN SEVIERVILLE TN E REDMOND WA Il GANANOQUE ONT Electro Voice Inc 989 m Litho In U S A Part Number 531223 918 MARK IV compan
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