Being relatively new to working on Macintosh computers I have no clue where to look when it comes to NEW MacBook speakers. I the specific parts I'm looking for are 17inch 2009 MacBook pro speakers. I've tried amazon and eBay but the subs bottom out badly (rattling) at 25% volume even though they are new. I have found several sites that sell mac parts but none say who the manufacture of the parts are. and before you ask no the issue isn't software side being I've inspected the speakers and they all show signs of rubber rotting and bent coils.