The Shure Model 450 Series II is a high output dynamic desktop microphone designed for paging and dispatching applications. This extremely rugged microphone features an omnidirectional pickup pattern and a frequency response tailored for optimum speech intelligibility. The 450 Series II microphone includes an impedance selection switch and a locking press-to-talk switch.
- Fingertip control bar or lock-on option for hands-free operation
- Omnidirectional dynamic
- Frequency response: 200 to 5,000 Hz
- Adjustable Height Dual Impedance
|Frequency Response||200 to 5,000 Hz|
|Impedance (at 1,000 Hz)||High Impedance: 30,000 ohms|
Low Impedance: 225 ohms
|Recommended Load Impedance||High Impedance: 100,000 ohms|
Low Impedance: 1,000 ohms
|Output Level (at 1,000 Hz, Open Circuit Voltage)||High Impedance: 35.0 dBV/Pa (17.8 mV)|
Low Impedance: 57.0 dBV/Pa (1.4 mV)
1 Pa = 94 dB SPL
|Cable||2.1 m (7 ft.) four-conductor, two conductors shielded, non-detachable|
|Case||Two-tone gray ARMO-DUR|
|Net Weight||737 grams (1 lb., 10 oz.)|
|Shipping Weight||1020 grams (2 lb., 4 oz.)|
|Switches||Locking Press-to-Talk Switch: Activates microphone circuit and an external relay or control circuit. The microphone circuit is normally shorted.|
Impedance Selection Switch: Double-pole, double-throw slide switch located in the base of the microphone.
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