(Cross posting from Sound design stack exchange since it was declared off topic there)
I have a sony speaker from an old Home Theatre System that is broken now leaving the standalone speakers in a good unused condition. I'm trying to design a Bluetooth capable audio unit to convert this into a nice Bluetooth speaker for my room. I need some help selecting the components for this project. Attached is an image of my speaker.
- How can I find the rated power of this speaker as I'm unable to find a proper datasheet or document on the internet that gives me this value. Is there a way to experimentally find out the power requirement of a speaker?
- The rated impedance is 3 Ω. I've found some amplifier modules (like PAM8430) on the internet but the specifications say that it can support 4 Ω and 8 Ω speakers can I still interface 3 Ω speakers and expect decent performance? Or is there a way I can increase the impedance of this speaker by adding some resistors etc or do I have to search for an amplifier that supports 3-ohm speakers?
- This speaker has +ve and =ve pins, can I directly connect these to the different parts of a 35mm TRS headphone jack or is some other kind of interfacing required?