WL185 is a lavalier electret condenser microphone for use with a wireless bodypack transmitter. Each microphone has a 1.2 meter (4 ft.) cable terminated with a miniature 4-pin connector (TA4F). The furnished tie clip can be rotated in 90° intervals for placement flexibility.
 

The function of a preamplifier is to amplify a low-level signal to line-level. A list of common sources would include a pickup, microphone, turntable or other transducer. Equalization and tone control are also applied.
 

Class D amplifiers are lighter and smaller than an equivalent Class AB amplifier. Historically, the usage of Class D amplifiers has been limited by their complexity compared to other amplifier types, and their sensitivity to Electromagnetic noise.
 

Suppressing Noise at the Source •Filter all I/O signals leaving the noisy environment •Locate I/O driver circuits close to the connector •Use the longest rise/fall times possible for all digital signals Reducing Noise at the Receiver •Filter all I/O signals entering the unit •Locate the I/O filters as close as possible to the connector Minimizing Noise Coupling •Use multilayer PCBs to minimize power and ground inductance •Keep clock circuits away from the I.O connector •Ground planes should be used whenever possible •Minimize the loop area for all high speed signals
 

A built-in Dolby Digital decoder eliminates the need for an external decoder by processing all six channels of audio information to provide a surround sound experience and an astoundingly natural sense of ambience and dynamic realism. Dolby Pro Logic II provides five channels of surround processing from any stereo source.