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Shure UNIDYNE III 545SD-LC Dual Impedance Unidirectional Microphone

Item #: 
1274034494368
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The UNIDYNE III Model 545SD is a dual-impedance, unidirectional, dynamic microphone. Shipped connected for low-impedance operation, the mic features a silent magnetic reed on/off switch. The UNIDYNE I... Read More

Available 09-21-2015 You will not be charged until order ships. Email me when this is in stock.

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Overview

The UNIDYNE III Model 545SD is a dual-impedance, unidirectional, dynamic microphone. Shipped connected for low-impedance operation, the mic features a silent magnetic reed on/off switch. The UNIDYNE III 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. (545SD-LC Cable not included).

Features
  • Exceptionally uniform cardioid pattern minimizes feedback in PA applications
  • Selectable dual-impedance operation
  • Silent magnetic reed on/off switch with lock option
  • Cardioid dynamic
  • Frequency response 50 to 15,000 Hz
Specifications
  • Type: Dynamic
  • Frequency Response: 50 to 15,000 Hz
  • Polar Pattern: Cardioid (unidirectional)--uniform with frequency, symmetrical about axis
  • Impedance: Dual. 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. Wired for low impedance as supplied.
  • Output Level (at 1,000 Hz): Open Circuit Voltage*: Low: -58.0 dB (1.3 mV); High: -35.0 dB (17.6 mV)*0 dB = 1 volt per Pascal (1 Pa = 94 dB SPL)
  • Polarity: Positive pressure on diaphragm produces positive voltage on pin 2 (with respect to pin 3).
  • Switch: Built-in magnetic reed on/off switch with lockplate.
  • Cartridge Shock Mount: Internal rubber vibration-isolator
  • Swivel Adapter: Positive action, adjustable through 90 degrees from vertical to horizontal, permits easy removal for handheld use, suitable for mounting on stand with 5/8"- 27 thread
  • Case: Chrome-plated die casting with ARMO-DUR grille and stainless steel screen
  • Dimensions (Length x Diameter): 6-3/16" x 1-1/4" (157 x 32 mm)
  • Net Weight (less cable): 9 oz (255 grams)
Warranty
MANUFACTURER'S WARRANTY
One year warranty on wireless mics, mixers, and circuitry products.
2 year warranty on wired mics.
Warranty terms vary. Check with manufacturer for specific product warranty.


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  • Expedited repair
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  • 100% coverage for commercial use
  • Extended return period
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  • No lemon guarantee
  • Free transfer of coverage to a new owner
  • Repair costs covered for up to three years from date of purchase
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  • Customer Reviews
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REVIEW SNAPSHOT®

by PowerReviews
 
5.0

(based on 2 reviews)

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Reviewed by 2 customers

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(1 of 3 customers found this review helpful)

 
5.0

Great mic

By Greg

from Granby ct

I am using this for harmonica and it has great tone. This is my first mic so I am no expert but I love it and am not disappointed.

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(1 of 1 customers found this review helpful)

 
5.0

Great harp mic

By gc

from granby ct

This is my first mic for harmonica but I have to say that it does crunch up great when cupped. I am starting to get the hang of it and there are a lot of different tones you can get by the different ways of cupping this mic. I am using it thru a vox ac4tv amp and it sounds good to my ears.I swapped in an amperex 12au7 in the amp and feedback is no problem.

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