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A120S

The Shure A120S In-Line On/Off Switch is an in-line, balanced, locking or momentary switch for a microphone. The A120S can be configured in several ways to meet different user requirements. Typical use cases include adding Latch On/Off, Push-To-Talk, or Push-To-Mute (cough button) to a microphone. The A120S is contoured to fit comfortably in the hand, and an attached belt clip rotates to four positions to allow convenient mounting. The A120S can be wired Normally-Open or Normally-Closed, and can be used with a balanced mono audio signal or an unbalanced stereo audio signal.

(Note: A120S is supplied unterminated; the installer must solder appropriate wiring to provide the function desired.) Its pushbutton combines with a rotary knob to provide either spring-return momentary or locking action. The unit is supplied with a crimp-on strain relief for 6.4mm (0.25-in.) diameter cable and with a flex relief for either large or small diameter cables.

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Developed for computer voice recognition applications, the 503BG microphone offers excellent voice fidelity while reducing background noise. Also use the 503BG in other close-talking applications such as paging and talkback.

The 503BG features a low-impedance, moving coil type transducer with an integral humbucking coil and an attached two-conductor shielded cable with a built-in strain relief. It produces a frequency response with an essentially constant output voltage over the voice spectrum when used close to the sound source.

“Close-Talk” Microphone                    

<ul>
	<li>Frequency response tailored for voice communications</li>
	<li>Minimal pick-up of background noise due to close-talk design</li>
	<li>Hum-bucking coil reduces induced noise from computer displays</li>
	<li>Attaches to flexible gooseneck arm (not included)</li>
	<li>Two conductor, shielded, bare-ended (no connector), straight cable</li>
	<li>Does not require DC power for operation</li>
</ul>

Paging & PA

Tailored

Performance

Recording

Close-talk microphone delivers excellent voice fidelity for fixed station applications with high background noise levels.

Cardioid

Paging

Other Microphones

Close-talk microphone delivers excellent voice fidelity for fixed station applications with high background noise levels. Features include a hum-bucking coil to reduce induced noise and a frequency response tailored for voice communications.

Speech

503BG

Dynamic

Paging and Communication

503BG

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