those Bose 10.2 's are good floor standing speakers.
you should be able to run a pair of RCA style cables from the back of the tv where it says
audio out to an AUX or tape input on your Hitachi preamp (don't use phono input)
if your tv doesn't have audio out jacks then you could use the headphone output on the
tv if it has one and run that to the same input on the Hitachi