Stand alone speaker

[IanR]

Hi all, my first post so apologies if I am in the wrong place.
I have an old Wharfedale 506 speaker, 8 ohm,15-75w that I would like to use as battery powered sounder from my iphones music library by putting a bluetooth receiver inside the speaker with a mono amp. One problem maybe summing the L &R signals from the bluetooth Rx to produce a good mono output. I don't plan to spend a lot, anyone done this? If so how did it go?

 

[IanR]

thanks for the reply, in many ways you’re right to just buy new but I have the speaker and battery and like to learn something along the way…..hadn’t thought about a fire hazard though

 

[IanR]

I assumed all those “portable” speakers had two loud speakers making a poor stereo sound, but if they use a single speaker(combining L&R) that might work if they suit an 8ohm impedance?

 

[IanR]

no one seems keen on my plan! I can see why. I ‘m sure there are lots of pairs of stereo speakers with one blown up by over enthusiastic volume settings from years ago.
The board you mentioned would only amplify one channel either L or R, I need one that would receive a stereo signal, combine the two, then feed to a mono amp.
Since thinking about this someone suggested using an iphone which can be set to send a mono bluetooth signal, it is the phone I planned to use as the source. There are lots of stereo bluetooth receiver/amp boards available (AliExpress) for less than £10 which could then give mixed stereo (mono)output from either channel. Or use the board you suggested, with the phone’s mixed output. Any helpful contributions welcome

 

[IanR]

I bought a ZK301B 30w mono amp with 5.3 Bluetooth, with a volume control and on/ off, from AliExpress. Its tiny,about 50x45x25mm. Cost £6.28 including p&p. Sound quality and volume are pretty are good.