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545SD
Classic UnidyneŽ Instrument Microphone |
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Product Code:
545SD
Classic UnidyneŽ Instrument |
The predecessor to the SM57, The
545SD Classic UnidyneŽ Instrument Microphone is a
dual-impedance, unidirectional, dynamic microphone.
Shipped connected for low-impedance operation, the 545SD
features a silent magnetic reed on/off switch with lock-on
option. A favorite for instrument pickup and recording, the
545SD can also be used on lecterns in public address systems
- 545SD-LC Cable not
included
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Features |
- Exceptionally uniform cardioid pattern
minimizes feedback
- Selectable dual-impedance operation
- Silent magnetic reed on/off switch with
lock option
- Cardioid dynamic
- Frequency response: 50 to 15,000 Hz
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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. To change impedance, see sections on lmpedance Selection
and Connections in User Guide.
- 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-DURŽ grille and stainless
steel screen
- Dimensions : See User Guide
- Net Weight (less cable) : 255 grams (9 oz)
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