I know it is harmonics that adds that texture. I have always liked Axiom's sound on their subs, even before my SVS purchase. I seem to remember Ian mentioning at one time that he designs the subs to have some harmonics, where as most of the others try to eliminate it. I liked how Ilka mentioned the harmonics then went on to say it didn't sound bad.
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Jason
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TTTHHHPPPPPTTTT!

My HT