No whinny blender noise. Just a deep throaty sound, like an import V8. Car is definitely quicker. Highly recommened and worth the time and money. Don't buy cheap E-Bay knock-offs. towing services

None . .

It plays very accurate in a small box without losing that deep bass the you come to expect from a $15

This speaker is power hungry in a small box but the 500d did the trick.

I connected one of these beauties to a mtx 500d in a tiny 1.5 cubic ft. box and the clarity and accuracy was suprising for a fifteen.

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Mtx thunder8000 subs pretty much the same thing.