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<blockquote data-quote="zane" data-source="post: 15874" data-attributes="member: 540617">Now you&#039;ve gone and done it.......We gotta take one apart!&nbsp; //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gifThe 12W7 boasts a 3&quot; coil with a .5&quot; gap - which in a lot of areas is not the best for SQ applications as it pushes the woofer away from a flat response.&nbsp;&nbsp; However, with a Short gap/Long coil- (SGLC) it also has a better BL Linearity by producing a more &quot;square&quot; profile in BL terms; up to the speakers limit.&nbsp;&nbsp; This is beneficial to the driver by allowing less distortion by means of the BL Linearity.JL Boasts this woofer as an SQ woofer with SPL, and the above basically supports that theory.&nbsp;&nbsp; However,&nbsp; this could also be a hinderance as the W7 is considerably overhung, making its coil almost too long for the modest gap it ulilizes.&nbsp; &nbsp; This should not, however, effect overall frequency response.&nbsp; &nbsp; This is why I question the coil being totally at fault.&nbsp;&nbsp; This is likely a combination of several things within its design, which as you pointed out, is probably the case with the new design.Servo control ehh?That would be interesting.........take it easy,-zane</blockquote>

[QUOTE="zane, post: 15874, member: 540617"] Now you've gone and done it....... We gotta take one apart! [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] The 12W7 boasts a 3" coil with a .5" gap - which in a lot of areas is not the best for SQ applications as it pushes the woofer away from a flat response. However, with a Short gap/Long coil- (SGLC) it also has a better BL Linearity by producing a more "square" profile in BL terms; up to the speakers limit. This is beneficial to the driver by allowing less distortion by means of the BL Linearity. JL Boasts this woofer as an SQ woofer with SPL, and the above basically supports that theory. However, this could also be a hinderance as the W7 is considerably overhung, making its coil almost too long for the modest gap it ulilizes. This should not, however, effect overall frequency response. This is why I question the coil being totally at fault. This is likely a combination of several things within its design, which as you pointed out, is probably the case with the new design. Servo control ehh? That would be interesting......... take it easy, -zane [/QUOTE]

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