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Crestron QM-WMIC 
Wall Plate Media Center Microphone Input
 
Wall Plate Media Center 
Microphone Input: QM-WMIC 
Purpose 
The purpose of this addendum is to provide correction to errant information in the 
original QM-WMIC Operations & Installation Guide (Doc. 6245). Specifically, this 
addendum adds and corrects specifications for the Microphone Input Levels listed on 
page 3. 
Correction for Microphone Input Level Specifications 
The specification table on page 3 is missing dBu specifications for the XLR Input 
Level Range on the QM-WMIC. It also lists incorrect dBu values for the ¼” Input 
Level Range on the QM-WMIC. The specifications for “Input Level Range” should 
read as: 
Updated Input Level Range Specification Showing Correct dBu Values 
SPECIFICATION DETAILS 
 
Input Level Range 
 XLR 
 
 ¼” 
 
-60 dBV to –20 dBV 
(-58 dBu to -18 dBu) 
 
-28 dBV to +12 dBV balanced  
(-26 dBu to +14 dBu)  
-28 dBV to +6 dBV unbalanced 
(-26 dBu to +8 dBu) 
 
Max. Input: 4 Vrms balanced  
 
2 Vrms unbalanced  
 
 
 
 
 
 
 
 
 
 
 
 
Crestron Electronics, Inc. 
Addendum #2 for DOC. 6245 
15 Volvo Drive   Rockleigh, NJ 07647 
05.04   
Tel: 888.CRESTRON 
 
Fax: 201.767.7576  
Specifications subject to  
www.crestron.com 
change without notice.