User's Manual
Lavalier Microphone   
COS-11D series 
SPECIFICATIONS 
<NOTE> In COS-11D PT and COS-11D PT-RM, there are ”Accessory-less = AL” types that don't 
include accessories “HC-11, WS-11, RM-11”. COS-11D PT and COS-11D R are in the plastic box 
that can be carried.   
2   
COS-11D** COS-11D BP-** COS-11D PT-**/1.8 COS-11D PT-**/3.0 COS-11D PT-RM-**/1.8 COS-11D PT-RM-**/3.0 
COS-11D R-** COS-11D R-RM-**   
Directivity    Omni directional   
Transducer    Self-polarized condenser   
Frequency range 
50Hz - 20kHz   
Sensitivity 
(nominal at 1kHz) 
(0dB=1V/Pa)   
17.8mV/P
a (-35dB) 
6mV/Pa 
(-44.5dB) 
8.9mV/Pa (-41dB)    3.2mV/Pa (-50dB)   
8.9mV/Pa 
(-41dB)   
3.2mV/Pa 
(-50dB)   
Equivalent noise 
level (A-weighted) 
28dB-A   
Max SPL (1% 
THD)   
127dB 
SPL.   
120dB SPL. 
123dB SPL.    132dB SPL.    123dB PL. 
132dB SPL. 
Output impedance 
at 1KHz   
180 ohms 
200 ohms 
700 ohms   
Powering   
+48±4V 
phantom 
AA battery , 
+12V to 
+52V   
+3V to +10V   
Current 
consumption   
less than 
2.2mA   
less than 
1mA (AA 
battery)   
less than 0.5mA   
weight    82g   
122g , 139g 
(with AA 
battery) 
10g   
19g   
10g  19g 
24g   
Dimensions    16.1mm X 4.0mm (diameter)   
Surface finish    **=BE=baked painting/beige , **=BK=black , **=GY=gray , **=WH=white   
Connector    XLR-3M    No Connector   
Lemo 3pin / Hirose 4Pin 
TA5F (RM only)   
Included 
Accessories   
HC-11 holder clip,WS-11 metal windscreen,RM-11 rubber mount  <NOTE>   




