Neither- they both suck.
The L7's have many issues with the fundamental design. They dont like ANY kind of abuse whatsoever. Its an SPL oriented driver. Unless you got mucho space these aint for you. Note, set of 12's would be MAXIMUM in an Alero... You wont fit 15's in the Alero in a proper box no way no how!
The Type X isnt anything great at all. Its an extremely over priced not so great sub. Its not really that good at anything. A type R will be better than a Type X.
You want a kick ass sub? Look in my sig. This weeks special is one HELL of a deal!
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-Ryan
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