Hello,
Like any computer amplified speakers , you can use any external passive speakers set (like your beautiful old 5feet vintage HiFi TEAC speakers that you don't use anymore) instead of internal ones. It is worth a try and non destructive since you don't short speakers output.
Just unsolder original speakers and add a parrallel standard cable, trying to respect polarity to avoid sound dephasing, even more if it's a 2.1 system with subwoofer.
You could be very surprised what just few watts can do with good sensitive speakers!
;)