Sound volume sucks past half

[Dalamar]

title sums it up nicely

seems like the bass drops off and that's it.

Is this the fault of the stock stereo? or speakers? both?

if the stereo is to blame, I was looking at this.

http://www.crutchfield.com/p_500KTP4...ck.html?tp=115

Any ideas?

I do not have it limited in the "my key"

2012 SE hatch with sports package, non sony, 6 speakers.

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