Electro-Voice ND357A User's Manual
Contents
1. Visalia CA 93291 AC 209 651 7777 FAX 209 651 0164 This warranty gives you specific legal rights and you may also have other rights which vary from state to state ELECTRO VOICE INC 600 Cecil Street Buchanan Michigan 49107 MANUFACTURING PLANTS AT E BUCHANAN M Electro Voice Inc 1989 Litho in USA E GANANOQUE ONT Part Number 531485 947 E NEWPORT TN MARK IV company SEVIERVILLE TN2. N D Series II Electro Voice a MARK IV company Supercardioid Dynamic Vocal Microphone The Electro Voice N D357A is a supercardioid dynamic microphone utiliz ing a revolutionary neodymium alloy to form the EV exclusive N DYM magnet with four times the power potential of conventional 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 conven tional 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 D357A 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 N DYM Series II microphones feature DynaDamp an advanced vibration isolation material DynaDamp is a unique foamed elastomer specifically formulated for vibration control Combining DynaDamp with the elastomeric Warm Grip handle and windscreen bumper forms an advanced technology vibration isolation system which dramatically reduces all forms of handling noise for the most demanding situations The N DYM Serie
3. h N D357Awill 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 malfunction in the acoustic system due to defects in workmanship and material Any active electronics incorporated in the microphone are guaranteed for three years from date of original purchase for parts and labor against such malfunction If such malfunction occurs microphone will be repaired or replaced at our option without charge for materials or labor if delivered prepaid to the proper Electro Voice service facility Unit will be returned prepaid Warranty does not extend to finish appearance items cables cable connectors switches or malfunction due to abuse or operation under other than specified conditions nor does it extend to incidental or consequential damages Some states do not allow the exclusion or limitation of incidental or consequential damages so the above exclusion may not apply to you Repair by other than Electro Voice or its authorized service agencies will void this guarantee A list of authorized service centers is available from Electro Voice Inc 600 Cecil Street Buchanan MI 49107 AC 616 695 6831 FAX 616 695 1304 or Electro Voice West 8234 Doe Avenue
4. ing the microphone closer to the sound source as documented in the specification section This 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 directional microphones Thus closer working distances can be used with N D357A to reduce the risk of sound system feedback ringing while preserving intelligibility The N D357AS 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 D35 7Awill 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 D357A utilizes an all metal core construction from the hardened windscreen to the Warm Grip covered handle Patent numbers 4 745 020 4 824 715 and 4 646 873 CERTIFIED PERFORMANCE Every N D35 7Ais inspected by a quality control tester and subjected to a computer controlled test system that verifies many 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 eac
5. s II pop filter incorporates a special molded retainer which insures optimum placement of the Acoustifoam filter material for maximum rejection of both wind noise and vocal P pops The retainer makes the pop filter an integral part of the microphone s removable upper grille assembly allowing easy cleaning for continued top performance The uniform supercardioid polar pattern of the N D357A insures superior gain before 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 Bei E E Tgr SS SS SSSI S Cee eee ed ain SSNS EER SSi SSSss Sas 20 30 50 100 500 1000 5000 10000 20000 FREQUENCY IN HERTZ Close Response N D 357A 357AS SPECIFICATIONS Frequency Response Close Response Far Response Polar Pattern Open Circuit Voltage Power Sensitivity Dynamic Range Equivalent Output Noise Impedance Weight Dimensions Height Diameter Shank 25 to 20 000 Hz 55 to 20 000 Hz supercardioid 2 2 mV Pascal 1000 Hz 53dB where 0 dB 1mW 10 dynes cm 141 dB 17 dB 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 OPERATION The low frequency response of the N D357A can be extended by position
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