Shure_545_User_Guide 电路图.pdf

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1、UNIDIRECTIONAL DYNAMIC MICROPHONES 222 HARTREY AVE. EVANSTON. IL. 60204 U.S.A. AREA CODE 31/866-zzoo . CABLE: SHUREMICRO TWX: 910-231-0048 TELEX: 72-4381 GENERAL DATA MODELS 545 AND 545s SHEET UNIDYNEB Ill The Model 545 Series UNIDYNEO Ill Microphones are slender dynamic microphones built to provide

2、 wide range reproduction of music and voice, and have an exceptionally uniform and effective unidirectional pickup pattern. i The microphones are particularly suitbLie for high quality theater-stage sound systems, recording, cathedrals and churches, and other critical public address systems such as

3、those used in political conventions and legislatures, hotels, stadiums, and public: auditoriums. Microphone Features: Unusually effective cardioid pickup pattern that elim- inates feedback (annoying loudspeaker squeals) and prevents echoing (boominess) that sometimes occurs in partially-filled halls

4、. Can also be used closer to loud- speakers than usual, without creating feedback problems Response especially effective for announcing, narration, vocal and instrumental music Cartridge shock mounted for quiet operation A strong detachable cable especially selected for good shielding from hum picku

5、p Dependability and ruggedness under all operating con- ditions The Model 545 Series Microphones are dual impedance for connection to microphone inputs rated at 19 to 300 ohms or to high-impedance microphone inputs. ARCHITECTS SPECIFICATIONS The microphone shall be the Shure Model 545 (5453) or equi

6、valent. The microphone shall be a dynamic (moving coil) type microphone with a frequency response of 50 to 15,000 Hz. The unit shall have a cardioid polar characteristic. The cancellation at the sides shall be approximately 6 dB, and the cancellation at the rear shall be 15 to 20 dB. The micro- phon

7、e shall be a dual-impedance microphone with a rated impedance of 150 ohms for connection to microphone inputs rated at 19 to 300 ohms and High for connection to high- impedance microphone inputs. The microphone output shall be: Low Impedance . - 57 dB (0 dB = 1 milliwatt per 10 microbars) High Imped

8、ance . . . . . . . . - 55 dB (0 dB = 1 volt per microbar) The microphone (Model 545) shall be provided with a swivel adapter, adjustable through 90 from vertical to horizontal, and suitable for mounting on a stand having a %-27 thread. It shall be provided with a detachable 4.6m (15 ft) three-conduc

9、tor shielded cable with a four-pin male audio connector (equivalent to the Amphenol MC4M con- nector) at the microphone end. The overall dimensions of the microphone shall be 148 mm (5-13116 in.) in length and 31.8 mm (1% in.) in diameter. The microphone (Model 5453) shall be provided with a swivel,

10、 and a built-in On-Off switch. It shall also be provided with a detachable 4.6m (15 ft) three-conductor shielded cable with a four-pin male audio connector (equivalent to the Amphenol MC4M connector) at the microphone end. The overall dimensions of the microphone shall be 122.2 mm (4-13116 in.) in h

11、eight, 31.8 mm (1% in.) in width and 148 mm (5-13116 in.) in depth. IMPEDANCE SELECTION Either high- or low-impedance operation of these micro- phones is selected by the leads chosen for connection at the equipment end of the microphone cable. For high impedance, the RED lead is the hot conductor; t

12、he shield is connected to the amplifier or chassis ground. For balanced-line low imedance, the BLACK and WHITE leads are the hot conductors; the shield is connected to the amplifier or chassis ground. For unbalanced low impedance, the WHITE lead is the hot conductor with the BLACK lead and shield co

13、nnected together to the amplifier or chassis ground. Any leads not being used for a particular connection should be insulated at the equipment end of the cable. The low-impedance connection is recommended where long cable lengths are required or under conditions of severe hum disturbance. The permis

14、sible cable length is practically unlimited, since neither response nor level is appreciably affected. For use with high-impedance amplifiers, the Shure Model A95 Series Line Matching Transformers are available for coupling a low-impedance line to the amplifier input. The Model A95 Series transforme

15、rs permit coupling a 19-300 ohm microphone line to a high-impedance input. Copyright 1978. Shure Brothers Inc. 27A443 (RC) (OVER) Important: Shure Microphone Cables are selected after ex- haustive tests to insure superior performance in microphones because of low capacities, superior shielding prope

16、rties and unusually long life under severe use. Cables with plastic insulation should not be subjected to excessive soldering-iron heat. Carefully clean and tin the conductors and the connections to which the conductors are to be soldered. The soldering operation can then be done with a minimum of h

17、eat, thereby avoiding any pos- sibility of damage to the cable. U.S. Patents 3,132,713, 3,240,883 and D190,864 Printed in U.S.A. RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS Output Level (at 1000 Hz) Low lmpedance . Open Circuit Voltage - 78 dB* (.I25 mV) . Power Level -57 dB* Type Dynamic Frequency Respo

18、nse 50 to 15,000 Hz (see Figure 1) FREQUENCY RESPONSE FIGURE 1 Polar Pattern Cardioid (unidirectional) pattern-Effective rejection of sound at the rear of the microphone is uniform at all frequencies, while front pickup characteristics are uniform about the axis (see Figure 2) I TYPICAL DIRECTIONAL

19、PATTERN I FIGURE 2 Impedance DUAL. Low: Microphone rating impedance is 150 ohms (270 ohms actual) for connection to microphone inputs rated at 19 to 300 ohms. High: Microphone impedance is High for connection to high-impedance microphone inputs. Selection of impedance made by choice of cable leads c

20、onnected at equipment end of cable (see section on lmpedance Selection). POSITIVE PRESSIRE PRDWCES POSITIVE VOLTAGE ON PIN I OR PIN 3 AWMNOL MCOF TYPE PLUG7 - - CABLE-PLUG C A R T R E GROW CASEOROUND ASSEMBLY MODEL 545 TRANSFWYER?., RED AUMNOL MCOF ! 111: TYPE c w m c T m CABLE- PLUG CARTRIDGE GROUN

21、D CASE GROUND MODEL 545s INTERNAL CONNECTIONS FIGURE 3 WELL High lmpedance . Open Circuit Voltage -55 dB* (1.76 mV) 0 dB = 1 volt per microbar *0 dB = 1 milliwatt per 10 microbars Switch Model 545 - None Model 5458 - Built in On-Off switch to control micro- phone circuit. The switch is an integral p

22、art of the con- nector assembly and is a slide-to-talk locking type switch Cable 4.6 meter (15 ft) three-conductor shielded with Amphenol MC4M connector on the microphone end Case Chrome-plated die casting with black ARMO-DUR8q grille and stainless steel screen Dimensions See Figure 4 Net Weight Mod

23、el 545 - 255 grams (9 02.) Model 5458 - 425 grams (15 02.) L 31.8 mm 11-114 IN) MODEL 545 Z3.8 mm llS/lB IN.! MODEL 5455 OVERALL DIMENSIONS FIGURE 4 FURNISHED ACCESSORY 545 545s Swivel Adapter . A25B OPTIONAL ACCESSORIES Line Matching Transformer . A95 Series A95 Series Vibration-Isolation Stand . S

24、39A S39A Desk Stand . S 3 3 S40A S37A, S40A Quick Disconnect Adapter . A45 A47 . Windscreen A2WS A2WS Carrying Case . AC54 AC54S REPLACEMENT PARTS Dvnamic Cartridae . R45 R45 cable and Plug assembly . C56 C56 . Swtch RK32S . Case Assembly RK42C RK41 C . Connector Assembly RK33CA . Cable Connector RK

25、117P RK117P . . Plug Element . . . RK31 P RK31 P GUARANTEE This Shure product is guaranteed in normal use to be free from electrical and mechanical defects for a period of one year from date of purchase. Please retain proof of purchase date. This guarantee includes all parts and labor. This guar- an

26、tee is in lieu of any and all other guarantees or warranties, express or implied, and there shall be no recovery for any consequential or incidental damages. SHIPPING INSTRUCTIONS Carefully repack the unit and return it prepaid to: Shure Brothers Incorporated Attention: Service Department 1501 West Shure Drive Arlington Heights, Illinois 60004 If outside the United States, return the unit to your dealer or Authorized Shure Service Center for repair. The unit will be returned to you prepaid. RadioFans.CN 收音机爱 好者资料库