Hmmm the speakers are wicked, though they do tire your ears out after a long session.

Over all Ive been well impressed for what I got for £200....

But after 6 months of vibrating it appears the rubber baffle arround the driver has come lose and flops forward about 1 mm. Dont think its a problem but not tempted to pull it out and check.....

Maybe its just my set i dunno, but your asking about Alesis and my only exp is with these, and Ill say it again they sound great but I woulda thought a company making speakers in this ball park would have managed to produce something of build quality that doesnt start to fall apart after 6 months of its intended use.....