SM76 User Guide - Shure

THE SOUND OF THE PROFESSIONALS@222 HARTREY AVE., EVANSTON, IL. 60204 U.S.A.AREA CODE 312/866-2200 • CABLE: SHUREMlCROPROFESSIONAL PRODUCTSGENERALThe Shure Model SM76 Dynamic OmnidirectionalMicrophone is designed specifically in size and performancefor studio and remote use in TV, radio, and professionalrecording.• Smooth extended frequency response from 45 to20,000 Hz• Omnidirectional pickup pattern for increased offaxispickup, minimal proximity effect• Slender design, lightweight• Versatility-for use in the hand or on a stand-foruse indoors or outdoors• Dependability- under all operating conditions• Ruggedness-will operate for years without deviationfrom original standardsThe SM76 meets exacting requirements for maximumquality and minimum size. The microphone is suppliedwith an adjustable swivel adapter, permitting themicrophone to be tilted through 90° from vertical tohorizontal.SPECIFICATIONSTypeDynamicFrequency ResponseTYPICAL POLAR PATTERNS45 to 20,000 Hz (see Figure 1) FIGURE 2ImpedanceDual. Microphone rating impedance is 38 ohms (48ohms actual) and 150 ohms (235 ohms actual) for connectionto microphone inputs rated at 19 to 300 ohms.Wired for 150 ohms as supplied. See ImpedanceChanging.TYPICAL FREQUENCY RESPONSEFIGURE 1Polar PatternOmnidirectional (see Figure 2)Output Level (at 1,000 Hz)IMPEDANCE38 ohms 150 ohmsOpen Circuit Voltage* . . . . -88.0 dB -81.5 dB(0.04 mV) (0.08 mV)Power Level** . . . . . . . . . . . -61.0 dB -61.0 dB*0 dB = 1 volt per microbar**0 dB = 1 milliwatt per 10 microbarsCopyright 1985, Shure Brothers Inc.27A2107(ED)Printed in U.S.A.

Hum Pickup (typical at 60 Hz)30 dB equivalent SPL in a 1 millioersted fieldConnectorProfessional three-pin audio connector on microphonedesigned to mate with Cannon XL series,Switchcraft A3 (Q.G.) series, or equivalent connectorFinishDark gray enamelCable6.1m (20 ft) 2-conductor shielded with professionalthree-socket audio connector on microphone endSwivel AdapterSnap-in positive-action, adjustable from 0° to 90°,with standard 5/8”-27 threadDimensionsSee Figure 3ARCHITECTS SPECIFICATIONSThe microphone shall be a moving coil (dynamic) typewith a frequency response of 45 to 20,000 Hz. The unitshall have an omnidirectional polar characteristic. Themicrophone shall be dual impedance with rated impedancesof 38 ohms and 150 ohms for connection tomicrophone inputs rated at 19 to 300 ohms.The microphone output shall be -61.0 dB with 0 dBequal to 1 milliwatt per 10 microbars.The microphone shall be provided with a detachable6.1 m (20 ft.) two-conductor shielded cable with a professionalthree-socket audio connector* at the microphoneend. The microphone shall also be provided with aswivel adapter, adjustable through 90° from vertical tohorizontal, and suitable for mounting on a stand havinga 5/8”-27 thread.The overall dimensions of the microphone shall be210 mm (8-9/32 in.) in length and 19.8 mm (25/32 in.) indiameter.The microphone shall be the Shure Model SM76 orequivalent.* Designed to mate with Cannon XL series, Switchcraft A3 (Q.G.) series,or equivalent connectorNet Weight (less cable)198 grams (7 oz)Packaged Weight964 grams (2 lb, 2 oz)OVERALL DIMENSIONSFIGURE 3IMPEDANCE CHANGINGThe impedance of the SM76 may be changed to 38ohms as follows (see Figures 3 and 4):1.2.3.4.5.6.Remove insert from receptacle end of microphoneby first turning setscrew inward (counterclockwise).Pull out 3-prong insert from receptacle.Disconnect RED lead from Pin 2.Solder WHITE lead to Pin 2.Insulate end of RED lead with tape.Reassemble insert into receptacle and tighten setscrewby turning outward (clockwise).INTERNAL CONNECTIONSFIGURE 4FURNISHED ACCESSORYSwivel Adapter . . . . . . . . . . . . . . . . . . . . . . . A57EREPLACEMENT PARTSCartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99A344Head Assembly* . . . . . . . . . . . . . . . . . . . . . . . 90D994Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C20DPlug Element . . . . . . . . . . . . . . . . . . . . . . . . . 90A1984Case Assembly . . . . . . . . . . . . . . . . . . . . . . . . 90A2824* Contains cartridge, cartridge case, and grilleOPTIONAL ACCESSORIESDesk Stand . . . . . . . . . . . . . . . . . . . . . . . . S37A, S39ALine Matching Transformer . . . . . . . . . . . . . . A95 SeriesFloor Stand . . . . . . . . . . . . . . . . . . . . . . . . . . MS-10CBaby Boom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BB-44GUARANTEEThis Shure product is guaranteed in normal use to befree from electrical and mechanical defects for a periodof one year from date of purchase. Please retain proofof purchase date. This guarantee includes all parts andlabor. This guarantee is in lieu of any and all otherguarantees or warranties, express or implied, and thereshall be no recovery for any consequential or incidentaldamages.SHIPPING INSTRUCTIONSCarefully repack the unit, have it insured, and return itprepaid to:Shure Brothers IncorporatedAttention: Service Department222 Hartrey AvenueEvanston, Illinois 60204If outside the United States, return the unit to yourdealer or Authorized Shure Service Center for repair.The unit will be returned to you prepaid.