how do I hook a bluetooth speaker to an instrument amplifier?

[langus]

I wish to hook external speakers to my piano amplifier. Wires are not an option. Distance is about 20 feet. Thought of a bluetooth speaker with a transmitter hooked to the "speaker out" on my amp. Is this a possible solution?

 

[alexoiu]

What audio/speaker out available on the piano amplifier (RCA, 3.5mm. coaxial...)?

 

[americanaudiophile]

Use one of these to convert speaker out to line level out
http/www.crutchfield.com/p_142LOC80/Scosche-LOC80.html
and connect a BT transmitter to it.
Make sure that you don't have the volume of the piano up to high. It would overload the transmitter.
If you want stereo you will need a stereo pair of BT speakers (not two that are meant to be used individually).