Hey everyone, I am brand new here. After my light research I've learned Bose is not what the marketing suggests. I'm trying to fix/replace my dads surround sound system. He has four speakers mounted up high in the 4 corners of the room. I think these are the tweeters. Anyways, all of them are blown and dont produce any sound. Is there a way for me to just replace the internals of these speakers and keep the housings? Or is it more cost effective to buy new units? I had worked with this older gentleman in the past and he told me about a site he was able to buy great speakers for cheap. He told me they are the original makers of the high end speakers before they get marked up by Bose and other companies. I dont know how true that is, but hey worth an ask. Thank you in advance!