Just got my new 15" 1.67GHz PowerBook and noticed that the audio coming from the internal speakers sounds a little off-center. After some checking around, I discovered these posts (below). Turns out, the 15" AlBook's speaker arrangement is less than symetrical, making it louder on the left side. Anyone else notice this? I can live with this if it's a design flaw. But if it's an issue with my particualr PowerBook, then I want to trade it in immedately. New 15" AiBook's odd audio behavior John Tuvell I purchased a 15" Aibook (1.25ghz) last week from my local Apple Store. When I ran iTunes for the first time I noticed very little or no audio coming from the right speaker. I opened the sound panel and interestingly, the pan left and pan right only produced sound from the left speaker. Have you heard of anyone else reporting this problem. I love the 'book but the sound output through the internal speakers is definitely crippled. John Bales I have a new 15" Powerbook that seems to have an issue with sound volume/balance on the internal speakers. When I received the powerbook, I immediately noticed that the sound was much louder and clearer from the left speaker. Jeffrey Baker The leftward bias of the sound in the new powerbook is due to the highly assymetrical layout of the interior parts. See * Disassembled PowerBook (16) * Disassembled PowerBook (17) Notice there is one speaker on the right, way up high near the ethernet port. There is another speaker on the left, above the PC Card slot. But there is also a third speaker! It is also on the left, and this is the "midrange-enhancing third speaker" listed in Apple's Tech Specs for the new 12 and 15" Powerbooks. I hope these pictures can (finally) put to rest the persistent theory that the sound somehow emerges from the rear and 'bounces off the screen' in these computers.