Purifi Audio PTT4.0W04-01A 4 Inch Midwoofer Review

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The Purifi Audio PTT4.0W04 is a long linear throw 4-inch midwoofer which costs about $580/pair USD. It has so much science baked in to its design that it makes my mind hurt so rather than try to pretend I understand it all, I’ll just redirect you toward the manufacturer’s website or you can view and purchase them from Madisound if you’d like.

SB Acoustics SB17CAC35-4 6 Inch Ceramic Midwoofer Review

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Per Madisound:
SB Ceramic cones consist of an aluminum/ceramic dual layer cone. Ceramic provides a very hard and robust surface with improved sonic properties and cosmetic appearance.

AudioFrog GB60 6 Inch Midwoofer Review

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Note: These speakers are designed specifically for car audio use and come with a kit of mounting gear such as adapter rings, grilles and additional installation hardware. This review is focused only on the performance aspect and does not consider the “install” aspect as it relates to the provided hardware.