donprice
Wound up workin' at a gas station....
Hey guys. I have this fairly old Sony amplifier
That is quite the beast....I don't know much about Sony AVRs but that had to be at or near top of the line. Take care of it and it will serve you well.
Ask around friends and family and try to find a free receiver or amplifier. Someone has one thay are not using and you don't need anything fancy or 100% working. A dedicated subwoofer amp would be best but almost anything that has an RCA input and speaker outputs will drive the Bose subs and give you gain (volume) control at the very least.
Go hit some yard sales this weekend. $10 should do it.
Good luck!