Atkinson, John (September 16, 2016). "Now That's a Subwoofer!". Stereophile. Archived from the original on December 10, 2010. Retrieved February 5, 2016.
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Atkinson, John (September 16, 2016). "Now That's a Subwoofer!". Stereophile. Archived from the original on December 10, 2010. Retrieved February 5, 2016.