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Williams Sound products are engineered, 
designed and manufactured under carefully 
controlled conditions to provide you with 
many years of reliable service.  Williams 
Sound warrants the WIR RX18 Receiver  
against defects in materials and workman-
ship for FIVE (5) years.  During the first 
five years from the purchase date, we will 
promptly repair or replace the WIR RX18 
Receiver.  

Earphones, headphones, batteries, cables, 
carry cases, and all other accessory products 
carry a 90-day warranty.

WILLIAMS SOUND HAS NO CONTROL 
OVER THE CONDITIONS UNDER 
WHICH THIS PRODUCT IS USED.  
WILLIAMS SOUND, THEREFORE, 
DISCLAIMS ALL WARRANTIES NOT 
SET FORTH ABOVE, BOTH EXPRESS 
AND IMPLIED, WITH RESPECT TO THE   
WIR RX18 RECEIVER,  INCLUDING 
BUT NOT LIMITED TO, ANY IMPLIED 
WARRANTY OF MERCHANTABILITY 
OR FITNESS FOR A PARTICULAR 
PURPOSE.  WILLIAMS SOUND SHALL 
NOT BE LIABLE TO ANY PERSON OR 
ENTITY FOR ANY MEDICAL EXPENSES 
OR ANY DIRECT, INCIDENTAL OR 
CONSEQUENTIAL DAMAGES 

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ImIteD

 W

arranty

If you experience difficulty with your system, call Toll-Free for  
Customer Assistance:

1-800-843-3544

If it is necessary to return the system for service, your Customer Service 
Representative will give you a Return Authorization Number (RA) and 
shipping instructions.

Pack the system carefully and send it to:

Williams Sound
Attn:  Repair Dept.
10300 Valley View Rd
Eden Prairie, MN  55344

 FRM 703C      ©2011 Williams Sound, LLC.

Ear Tips: Replacement Ear Tips are available from your Williams Sound 
dealer, Part Number EAR 240.

Specifications

Weight: 

2.0 oz (56 g) with battery

Material and Color: 

ABS plastic, Black and Grey 

Battery Type, Life: 

BAT AP07D NiMH Battery Pack, 7 hours

Modulation Frequency:  2.3 MHz or 2.8 MHz or stereo
Frequency Response: 

200 Hz to 8 kHz, ± 5 dB

Signal to Noise Ratio: 

58 dB at 10 m

Controls: 

Volume control thumbwheel;  3-position  

 

selection switch (2.3 MHz, 2.8 MHz, stereo)

Acoustic Output: 

120 dB MAX SSPL90 with 2 cc coupler

Compatibility: 

Compatible with 2.3 MHz and 2.8 MHz IR  

 

transmitters, WIR TX900 and WIR TX925 systems

Power Switch: 

Built into receiver “arms”

Ear pads: 

Uses EAR 240 Silicon Ear Tips

Approvals: 

CE, RoHS, WEEE

Warranty: 

5 years (90 day on battery)

Fig. B (Rear View)

CAUSED BY ANY USE, DEFECT, 
FAILURE OR MALFUNCTION OF THE 
PRODUCT, WHETHER A CLAIM FOR 
SUCH DAMAGES IS BASED UPON 
WARRANTY, CONTRACT, TORT OR 
OTHERWISE.  THE SOLE REMEDY 
FOR ANY DEFECT, FAILURE OR 
MALFUNCTION OF THE PRODUCT IS 
REPLACEMENT OF THE PRODUCT.  
NO PERSON HAS ANY AUTHORITY 
TO BIND WILLIAMS SOUND TO ANY 
REPRESENTATION OR WARRANTY 
WITH RESPECT TO THE WIR RX18 
RECEIVER.  UNAUTHORIZED 
REPAIRS OR MODIFICATIONS WILL 
VOID THE WARRANTY.

The exclusions and limitations set out 
above are not intended to, and should 
not be construed so as to contravene 
mandatory provisions of applicable law.  
If any part or term of this Disclaimer of 
Warranty is held to be illegal, unenforce-
able or in conflict with applicable law 
by a court of competent jurisdiction, 
the validity of the remaining portions of 
this Disclaimer of Warranty shall not be 
affected, and all rights and obligations 
shall be construed and enforced as if this 
Limited Warranty did not contain the par-
ticular part or term held to be invalid.

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