I don't know much about speakers and I haven't had my iMac very long so is it just me or do iMacs have good quality speakers. The sound pretty damn good to me. 
i bought a 2011 imac too, should arrive this week & i'm looking for a standalone speaker system for it too. i'm not sure what to go for, a 2.1 or a 5.1, im interested in the Bose companion 3, 2.1 speakers (with the woofer), they look clean & amazing, but i haven't heard them yet, & its not a 5.1 so will it have a nice effect while watching movies ? im not sure.
I have Companion 3's which are currently hooked up to both my TV and laptop. I like the little touch device that allows for volume control and easy mute. You might bump up to the Companion 5's since they're supposed to emulate a bigger system and you can use the USB input instead of 3.5mm.
Hi,
here are 2 good choices: a 2-way only (self-powered) AudioEngine A2, or 2.1 Swans M10:
lolI don't think the Swans hold a candle to the oldschool Klipsch 2.1s.
For the amount of space they take on the desk, the built-in speakers are simply amazing! By far the best sounding built-in speakers anyone could get. For day to day work, youtubing or radio etc, they are brilliant.
For the amount of space they take on the desk, the built-in speakers are simply amazing! By far the best sounding built-in speakers anyone could get. For day to day work, youtubing or radio etc, they are brilliant. For everything else, I have a pair of modded Sennheiser HD558 which make the Z5500 (now in storage) sound like cheap imitations.
This is a disappointing revelation, that the iMac speakers are not sufficient for a quality music and movies audio experience.
I was really hoping to get rid of "clutter" on my desk, including speakers and their respective wires/plugs. Isn't that the whole point of an all in one? I suppose there are tradeoffs...
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They are expensive, but there are no other speakers that match these. the sound is frighteningly good, and paired with any mac these look outstanding.