Aurora Design BT-2.5 User'S Operation Manual Download Page 1

Aurora Design

BT-2.5

Bluetooth/AAC Adapter

User Operation

Manual

Congratulations on your new Aurora Design BT-2.5 Bluetooth/AAC 

adapter. Combined with an FMR-2 converted radio, you can enjoy 21

st

 

century technology in your classic vehicle!

Setup:

 Your radio may have come equipped with an internal 

microphone. If not, before installing your radio back into your vehicle, 
you may wish to plug the hands-free microphone or optional illuminated 
pushbutton into the appropriate jacks on the radio. The microphone can be 
placed in a convenient location in the vehicle, typically along the front 
edge of the headliner near the rear view mirror or along the bottom edge of 
the dashboard. The attached cable is 9.8’ (3M) long and can be routed as 
required, typically behind the A pillar cover for headliner mounting. 
Excess cable can be coiled and tied off.

The optional pushbutton assembly is not required when used with an 

FMR-2 converted radio as the existing radio controls can be used to fully 
control the BT-2.5. The pushbutton assembly can still be used with an 
FMR-2 converted radio if desired, and must be used with all other 
installations. The pushbutton requires a 1/2” (12.7mm) hole and should be 
mounted somewhere convenient such as the bottom edge of the dashboard. 
The pushbutton is illuminated with a red status LED that should be made 
visible for easiest operation. The attached cable is 3.3’ (1M) long and can 
be routed as required. Excess cable can be coiled and tied off.

Basic Operation:

 Operation of the BT-2.5 is extremely simple yet 

powerful. The BT-2.5, when combined with an FMR-2 AM/FM receiver 
form a fully integrated AM/FM/Bluetooth/AAC solution. Communication 
over a proprietary com-link keeps the two modules in perfect sync. No 
external cables, plugs or switches are required. Full operation is provided 
by the existing controls on the radio. When streaming music or handling a 
phone call, the FMR-2 status LED will change color to indicate Bluetooth 
operation. (see FMR-2 manual for more information on status LED) When 
you stop streaming music or end a call, the BT-2.5 will put the FMR-2 
back into normal operation. Everything is handled automatically.

The BT-2.5 supports SBC and AAC formats over Bluetooth. AAC files 

offer higher quality and is the native format used by iTunes® and many 
other popular music services. ACC files will play natively off compatible 
Bluetooth devices.

The BT-2.5 will always return to the last mode it was in when the 

radio was turned off assuming the Bluetooth device is still present. For 
example, if the BT-2.5 was playing back from the Bluetooth when the 
radio was powered off, it will return to playing back from where it left off 
when the radio is turned back on.

The BT-2.5 supports 

Voice Assist HD 

which will clearly speak 

messages to you to assist in the operation of the radio.

!

!

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