I have an old car stereo radio but the car only has a mono speaker. I do not want to do any metal cutting to install new stereo speakers. Thus, is it possible to use the output signal (low impedance) to the speakers and convert it to a Bluetooth signal so I can use a portable Bluetooth speaker?

1 Answer 1


A DI-box would do the job, for example most of these would. Look in the specs if it supports speaker output (usually the maximum wattage is specified).

Note that most of them are mono, so look for a stereo version or hook up two of them parallel. Also look at the voltage (if it is an active one), you need 12V for most cars.

Most DI-box's have balanced output, so you would either have to connect the cold tip to GND or leave it unconnected (the manual of the specific DI-box should tell which is best).

Offcourse you would need a bluetooth interface behind it to connect to your bluetooth speakers.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.