User's Manual
WM, WM/E01, WM/E02, WM/X
LECTROSONICS, INC.
2
Introduction
The WM transmitter is designed to resist damage 
when used in wet or dusty conditions and also offer 
a comprehensive feature set that makes it equally at 
home in film and television production and on stage.
A solid machined aluminum housing with a corrosion 
resistant finish hosts dual battery compartments, a 
moisture sealed control panel with backlit LCD and 
enlarged membrane switches. Recessed seats for the 
O-rings in the battery caps and input jack allow the 
caps and mic connector to be tightened securely with-
out excessive deformation of the O-rings.
The antenna is made of an extremely durable, multi-
strand alloy that will withstand heavy abuse. It is 
mounted with a compression sealed strain relief that 
prevents dust and moisture from entering the housing.
As the first stage in the signal processing chain, the 
input preamp section includes very high quality, low 
noise components with a wide range of gain adjust-
ment in 1 dB increments and a DSP-controlled input 
limiter. Dual color LEDs on the control panel accurately 
indicate audio input level for precise gain adjustment. 
Easily accessed screens on the LCD simplify setup 
and adjustments.
Output power is adjustable to provide either extended 
operating range or extended battery life as needed for 
the application. 
The Digital Hybrid Wireless
®
 design (US Patent 
7,225,135) combines 24-bit digital audio with analog 
FM resulting in a system that has the same operating 
range as analog systems, the same spectral efficiency 
as analog systems, the same long battery life as ana-
log systems, plus the excellent audio fidelity typical of 
pure digital systems.
The DSP-based design works with all Digital Hybrid 
receivers, and is backward compatible for use with 
Lectrosonics IFB receivers and some other brands of 
analog wireless receivers.










