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Left

Right

LFE / Sub in

DC in +5V

c o n n e c t i o n

PAIR

Turn on subwoofer and transmitter.
Press & hold down transmitter 

PAIR button until the transmitter 

LED flashes quickly. 
Within 30 seconds, press & hold 

subwoofer PAIR button until

PAIR LED flashes quickly. 
Within seconds, both LED’s will 

stop flashing, becoming steady.  

Wireless link is complete.

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WIRELESS PAIRING INSTRUCTIONS

FCC ID: 

WUO-WTX1010

S/N:

o W n e R ’ S   M A n U A L

AB-Tx Transmitter

   

F R e q U e n c y   H o p p i n g   D i g i t A L   R A D i o

o W n e R ’ S   M A n U A L

AB-Tx

Wireless Subwoofer Transmitter

p R e c A U t i o n S

y o U R   A B - t x   t R A n S M i t t e R

y o U R   A B - t x   t R A n S M i t t e R

S p e c i F i c A t i o n S

F e A t U R e S

g e t t i n g   t o   k n o W   y o U R   A B - t x

B o x   c o n t e n t S

The exclamation point within an  

equilateral triangle is intended to alert the user  

to the presence of important operating and  

maintenance (servicing) instructions in the  

literature accompanying the product. 

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Read these instructions.

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Keep these instructions.

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Heed all warnings.

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Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

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Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus 

(including amplifiers) that produce heat. 

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Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two 

blades with one wider than the other. A grounding type plug has two blades and a third grounding 

prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit 

into your outlet, consult an electrician for replacement of the obsolete outlet. 

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Protect the power cord from being walked on or pinched particularly at plugs, convenience 

receptacles, and the point where they exit from the apparatus.

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Only use attachments/accessories specified by the manufacturer.

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Unplug this apparatus during lightning storms or when unused for long periods of time. 

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Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been 

damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects 

have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate 

normally, or has been dropped. 

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WARNING:

 To reduce the risk of fire or electric shock, this apparatus should not be exposed to rain 

or moisture and objects filled with liquids, such as vases, should not be placed on this apparatus. 

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To completely disconnect this equipment from the mains, disconnect the power supply cord plug from 

the receptacle. 

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The mains plug of the power supply cord shall remain readily operable. 

The Air-Bus AB-Tx wireless transmitter is designed to be compatible with select Air-Bus products. The transmitter 
provides a wireless link between the audio source and the wireless receiver/subwoofer. The link that is 
established is locked so that, even if power is lost, the link will always re-establish itself after power is restored. 

The transmitter utilizes FSK (Frequency Shift Keying) technology to hop between available channels to ensure 
a reliable audio link. Additionally, the AB-Tx operates on a single narrow channel that minimizes bandwidth 
consumption, thereby allowing it to operate in congested wireless environments where others won’t.

AC Power: 

The unit is shipped with a Universal-Voltage AC adapter. Remove this adapter from its 

packaging and insert the connector into the jack on the back of the transmitter. It is best to connect 
power only after all other connections are made. Plug the AC adapter into an AC wall receptacle or similar.

Placement of Wireless Transmitter:

 Wireless transmitters operate best when placed away from 

other wireless devices such as routers and other wireless transmitters, and when they have minimal 
obstructions to impede the signal path. 

Wireless Pairing Instructions

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Turn on the subwoofer and transmitter.

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Press & hold down the transmitter PAIR button until the transmitter LED flashes quickly.

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Within 30 seconds, press & hold the subwoofer PAIR button until the PAIR LED flashes quickly. 

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Within seconds, both LED’s will stop flashing, becoming steady. 

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Wireless link is complete.

Note:

 Only one receiver/subwoofer can be paired to a transmitter.  If two receiver/subwoofers are used 

wirelessly, each device must have its own wireless transmitter.  

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Frequency Response:..................... 

20Hz – 1kHz

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RF Transmission: ........................... 

Frequency Hopping, FSK Digital Radio (Frequency Shift Keying)

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RF Operating Frequency: ............... 

2405MHz – 2477MHz 

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Channel Bandwidth: ...................... 

2MHz

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Transmitter Power: ........................ 

0dBm

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Maximum Operating Range: .......... 

Approximately 50ft (15m)

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Latency: ......................................... 

Less than 13mS 

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Inputs: ........................................... 

RCA Left & Right, (LFE Shared with Right Input Connector) 

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Input Impedance: .......................... 

Line Level – 20k ohms, Unbalanced 

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AC Adapter: .................................... 

100V – 240V 50-60Hz AC 

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Input Power Connection: .............. 

5.5mm x 2.2mm Power Connector

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Dimensions: ................................... 

4.55

"

W x 1.25

"

H x 4

"

D, (115W x 32H x 103D)mm

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Weight w/AC Adapter: .................. 

0.45lbs (200g)

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Shipping Dimensions: .................... 

8.9

"

W x 2.25

"

H x 5

"

D, (225W x 57H x 128D)mm

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Shipping Weight: ........................... 

0.7lbs (0.3kg) 

Connection of the AB-Tx requires a common 
shielded RCA type coaxial cable or a shielded two-
conductor wire with RCA type connectors. No signal 
connection cable is provided with the AB-Tx since the length of cable is installation  
specific. Refer to the image on the reverse side of this manual as a reference.

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Dual RCA inputs accept left, right, and LFE signals (in right RCA) 

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Compact design for inconspicuous placement

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Universal Input voltage (100-240VAC, 50-60Hz)

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2.4GHz FSK (Frequency Shift Keying) technology to hop between available channels

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Narrow Bandwidth allows for superior performance in congested wireless environments

The lightning flash with arrowhead 

symbol within an equilateral triangle, is intended 

to alert the user to the presence of uninsulated 

“dangerous voltage” within the product’s  

enclosure that may be of sufficient magnitude  

to constitute a risk of electric shock to persons. 

W A R N I N G

C A U T I O N

!     

AC Adapter

Manual

Front

Rear

Underside

AB-Tx Transmitter

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Power/Status Indicator

 – Off=No power, 

Steady=On and Linked, Slow flash=No Link, 

Fast flash=Searching for link

Power Input Jack 

– 5 VDC input

RCA Input 

– Left, Right/LFE gold plated 

input connector

Pair Button 

– Used to pair wireless 

transmitter with wireless receiver

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Follow all instructions.

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Do not use this apparatus near water.

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Clean only with dry cloth.

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