Im Jahre 1960 stellte die Firma Shure das Modell 545SD Unidyne III als Teil der Unidyne Mikrofon-Serie vor. Before the Unidyne III, all Shure unidirectional microphones were utilized by speaking into the side. A 545 with an xlr jack will have impedance selection inside on the connector. To lock switch in the ON position, remove screw on lockplate and turn lockplate 180°. Your 545 microphone has a four pin MC4F Amphenol connector. When using the microphone with an unbalanced input, use a cable wired with pin 2 as the signal carrier and pin 3 connected to the cable shield (ground), such as the Shure C20AHZ high-impedance cable. Microphone classique d’instrument de 545SD Unidyne ... Micrófono clásico del instrumento de 545SD Unidyne ® ©2009 Shure Incorporated . This product meets the Essential Requirements of all relevant European directives and is eligible for CE marking. Confirm polarity with your other 545, and if needed, reverse the wht and blk leads on the xlr. would love to get a hold of these things! The CE Declaration of Conformity can be obtained from:, Headquarters Europe, Middle East & Africa, Microphone Clip for SM58, SM57, SM87A, BETA87A, BETA87C, PGA57, PGA58, PGA48, PGA81, Over/Under Dual Mount for two microphones: SM57, BETA57A or 545 Series microphones, Gray Locking Foam Windscreen for 545 Series, SM57, Black Locking Foam Windscreen for 545 Series, SM57, 20' Cable with ¼" Phone Plug on Equipment End (Pin 2 Hot), Exceptionally uniform cardioid pattern minimizes feedback in PA applications, Silent magnetic reed on/off switch with lock option. hopefully someone else replies. Reassemble and tighten screw. So is the difference between, say a 1960 Unidyne III and a … Shure 545 Unidyne III If this is your first visit, be sure to check out the FAQ by clicking the link above. hey. If the sound drops drastically, or if a dead spot is found when talking between the two microphones, either the microphones or their cables have opposite polarity. The Model 545SD is a dual-impedance, unidirectional, dynamic microphone. All cables and microphones should be tested to ensure that they have the same polarity. Publications User Guides 545SD (English) General Description. Summary of Contents for Shure 545 UNIDYNE III Page 1 For unbalanced low impedance, the WHITE lead is the "hot" conductor with the BLACK lead The microphone shall be the Shure Model 545 (5453) or and shield connected together to the amplifier or chassis equivalent. Zu jener Reihe gehörte übrigens auch das berühmte Elvis-Mikrofon mit Namen 55S. The microphone is shipped connected for low impedance operation. If the red wire is on pin three it's high, and white is low. I just bought a couple of these 545s used on ebay a couple days ago. Shipped connected for low-impedance operation, it features a silent magnetic reed on/off switch. 27A13223 (Rev. Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3. By "selection", I did not mean that there is a "switch". Also for: 545s unidyne iii. Absolutely love it and needed to clean it up and rewire, hence the digging and drawing. Get the best deals on Shure 545 when you shop the largest online selection at To wire this output for a quarter inch connector, connect pin 1 to the sleeve (ground or shield) and pin 2 to the tip of the connector. Pins 1 and 2 of this connector are the high impedance output. The predecessor to the SM57, the 545SD Classic Unidyne® Instrument Microphone is a dual-impedance, unidirectional, dynamic microphone. Several different models of the Unidyne III / 545 have come out, mainly to accommodate all of the myriad bizarre mic cable and mic mounting standards that predated modern XLR, some offering switched operation, some not, etc. Assuming these were pin-3-hot.....on the mic amp male xlr end, the white wire to pin 3, black to pin 2,  shield to pin-1, red N.C.(taped off). Reassemble plug element into microphone and seal setscrew securely by turning out (clockwise). Wiring classic Shure unidyne iii 4 pin amphenol to XLR. they any good? The Model 545SD is a dual-impedance, unidirectional, dynamic microphone. Reconnect 2-terminal impedance selection socket in reverse position so that pin 3 of plug element is inserted in socket terminal "H" (White). They've been produced continuously from 1960 up through the current production model (Shure Unidyne 545 SD) available today. 545 UNIDYNE III microphone pdf manual download. The 545 Unidyne III was the first Shure unidirectional model where the user spoke into the end of the microphone. The internal 51E23 transformer has low impedance and high impedance windings, and is what makes the mic so powerful and versatile. Wired for low impedance as supplied. Discussion in 'Accessories / Connections' started by MxWebb, Jan 19, (the type which changes impedance by changing the mic cable) very early I believe made in USA before Shure moved production to Mexico. The mating connector to the MC4F is Amphenol's part MC4M. Shure 55 Wiring Diagram — Shure 55 Switched Diagram — Shure 55 Transformer — I've got one branded Bogen U10S "made by Shure Brothers Inc." with the Shure sticker inside the casing. Shure SM57: Shure Unidyne III 545 SD: These frequency response graphs pictured above are current, 2009 data based on production models, and they show that the Unidyne III sounds particularly different in the high range - quite possibly giving it a nice boost in that area that many engineers find desirable and "mojo" worthy. Microphone rating impedance is 150 ohms (250 ohms actual) for connection to microphone inputs rated at 19 to 300 ohms and 'High' for connection to high-impedance microphone inputs. Remove plug element at receptacle end of microphone by turning slotted setscrew in (counterclockwise) and carefully withdrawing plug element from case. When using the microphone with a balanced input, pins 2 and 3 are the audio signal carriers. Wires have to be re-routed, either by soldering (4-pin), or by turning a connector(s) around (XLR 3-pin inside the mic). View and Download Shure 545 UNIDYNE III datasheet online. Online user guide for Shure 545SD wired microphone. That mic element is the Unidyne III – the engine of the SM58, SM57, 545, and 565. To change the polarity of a microphone cable, either use a Shure A15PRS phase reverser or interchange the wires connected to pins 2 and 3 of the three-pin connector at one end of the cable. To change impedance, see sections on Impedance Selection and Connections. Disconnect 2-terminal impedance selection socket from rear of plug element. The Shure 545 UNIDYNE® III and PE54 UNIDYNE® III series were all fitted with the same R45 Dynamic Cartridge, as was the Shure 544 UNIDYNE® III. The Classic Unidyne is a favorite for instrument pickup and recording,and can be used on lecterns for public address systems such as those used in political conventions and legislatures, convention halls, hotels, public auditoriums, stadiums, schools, and churches. Shipped connected for low-impedance operation, the 545SD features a silent magnetic reed on/off switch with lock-on option. 2) N108 Printed in U.S.A. микрофон аппаратуры 545SD ... l’UNlDYNE III peut être utilisé sur pupitre pour des sys- ah well. Shipped connected for low-impedance operation, it features a silent magnetic reed on/off switch. Anders als dieses, war das 545 mit seiner kompakten Bauform eher auf die Abnahme von Instrumenten ausgelegt, ein besonderes Feature stellte zudem die Umschaltbarkeit der Impedanz dar. You may have to register before you can post: click the register link above to proceed. To change to high impedance, proceed as follows: IMPEDANCE SELECTION RECEPTACLE END OF MICROPHONE. Free shipping on many items | Browse your favorite brands | affordable prices. Re: Shure 545 Unidyne III wiring « Reply #1 on: November 23, 2006, 04:42:33 am » A 545 with an xlr jack will have impedance selection inside on the connector. Over/Under Dual Mount for two microphones: SM57, BETA57A or 545 Series microphones: A26M: Gray Locking Foam Windscreen for 545 Series, SM57: A2WS-GRA: Black Locking Foam Windscreen for 545 Series, SM57: A2WS-BLK: 7.6 m (25 ft.) Cable (XLR-XLR) C25J: 20' Cable with ¼" Phone Plug on Equipment End (Pin 2 Hot) C20AHZ

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