I have a pair of A150 Series III Boston Acoustic Speakers i received for helping somebody move. I really like the speakers but lately they've been sounding a little bit dull. I think i may need to replace something since i believe these speakers were manufactured in the early 1980's. I don't know much about speakers and i was wondering if anybody could help me determine my problem. Whether i need to replace the Woofers or the Tweeters. The Speakers are in mint condition i just think they need to be updated since there getting to be a little bit older. Thank you.