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<blockquote data-quote="mandos" data-source="post: 2969623" data-attributes="member: 561347">Alright, so based on subs with a COMPARATIVE xmax...hell, these subs have LESS xmax than the 13Kv.2 that you posted and less cone area to boot:RE RE 12:480 cm² Sd12mm xmaxJL Audio 12W3V3:520 cm² Sd13 mm xmax13Kv.2:545cm² Sd15.1 mm xmaxSo, the 13Kv.2 has more cone area than those two subs with a more conventional surround while offering more xmax.For the subs you show that have the VERY tall surrounds:Image Dynamics IDMAX:545 cm² Sd24.6 mm xmaxTC Sounds TC-3000:452 cm² Sd(their site lists 240mm diameter = 12 cm radius^2 * PI for that #)30 mm xmaxI&#039;d certainly hope the drivers that are going to move 9.5+ mm farther one way will have a taller surround.The IDMAX driver has the same cone area, and more xmax, and it has a much taller surround.&nbsp; That TC driver has less cone area and more xmax.Granted, it might not quite have the same cone area as what a 13&quot; driver with a conventional cone would be, but it&#039;s definitely got more than a conventional 12&quot; driver with an equal xmax.</blockquote>

[QUOTE="mandos, post: 2969623, member: 561347"] Alright, so based on subs with a COMPARATIVE xmax...hell, these subs have LESS xmax than the 13Kv.2 that you posted and less cone area to boot: RE RE 12: 480 cm² Sd 12mm xmax JL Audio 12W3V3: 520 cm² Sd 13 mm xmax 13Kv.2: 545cm² Sd 15.1 mm xmax So, the 13Kv.2 has more cone area than those two subs with a more conventional surround while offering more xmax. For the subs you show that have the VERY tall surrounds: Image Dynamics IDMAX: 545 cm² Sd 24.6 mm xmax TC Sounds TC-3000: 452 cm² Sd(their site lists 240mm diameter = 12 cm radius^2 * PI for that #) 30 mm xmax I'd certainly hope the drivers that are going to move 9.5+ mm farther one way will have a taller surround. The IDMAX driver has the same cone area, and more xmax, and it has a much taller surround. That TC driver has less cone area and more xmax. Granted, it might not quite have the same cone area as what a 13" driver with a conventional cone would be, but it's definitely got more than a conventional 12" driver with an equal xmax. [/QUOTE]

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