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-   -   Creating headphone jack from speaker out (http://www.diyaudio.com/forums/headphone-systems/220091-creating-headphone-jack-speaker-out.html)

r47 20th September 2012 10:13 PM

Creating headphone jack from speaker out
 
I'm trying to add a bluetooth transmitter to my motorcycle stereo so that I can receive bluetooth audio in my helmet.

My current plan is to convert the powered rear speaker out into a suitable 3.5mm female headphone jack. The stereo manual claims speakers connected to the rear speaker out should have input impedance of 10 kOhm and an ouput signal level of <=1 V effective.

Do I need to worry about an impedance imbalance? I've researched this topic and did find the often-cited Rod Elliott article here Headphone Adaptor for Power Amplifiers

I'm not sure if a small amp like mine would still require such an approach. I appreciate you sharing your thoughts and experience.

rjm 1st October 2012 05:14 AM

A "powered rear speaker out" is a line level output, so you can just connect it directly to the bluetooth transmitter, or a headphone amplifier for example.


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