The HT pass-thru is not really necessary (some repeatable volume setting would do), but pre-outs on the receiver would be necessary. I used a cheap Sherwood receiver (6090R), which is one of the few cheaper ones that has pre-outs.
Otherwise your only option is to swap speaker cables of use a speaker switch box, which could deteriorate the sound.
Good luck,
Rene
Otherwise your only option is to swap speaker cables of use a speaker switch box, which could deteriorate the sound.
Good luck,
Rene