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<blockquote data-quote="Firewalker" data-source="post: 8785408" data-attributes="member: 676743">This is all I can find on those. Might want to ask at DIYMA as some of the guys still have that sort of info laying around sometimes.&quot; Features: Polyether Surround Titanium Cone Dual Mirror-Image Spiders Aluminum Voice Coil Former &quot;Bottomless&quot; Design Aero-Vented Pole Piece Cast Aluminum Frame Triple-Stacked Magnet Small Sealed-Box Enclosure Continuous Power Handling: 750W Music Power Handling: 1,500W Dual Voice Coil Specs: Fs: 31Hz Qts: 0.43 DCR: 3/coil Vas: 4.21 cuft Xmax<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown&nbsp; &nbsp; :(" loading="lazy" data-shortname=":(" />one way) 1.75&quot; Key design feature: Two spiders designed with a special non-linear Finite Element Analysis (FEA) software are spaced precisely apart to keep the voice coil centered in the motor structure. Woven-in tinsel lead wires into the dual spider so leads do not contact cone during high excursions.&quot;</blockquote>

[QUOTE="Firewalker, post: 8785408, member: 676743"] This is all I can find on those. Might want to ask at DIYMA as some of the guys still have that sort of info laying around sometimes. " Features: Polyether Surround Titanium Cone Dual Mirror-Image Spiders Aluminum Voice Coil Former "Bottomless" Design Aero-Vented Pole Piece Cast Aluminum Frame Triple-Stacked Magnet Small Sealed-Box Enclosure Continuous Power Handling: 750W Music Power Handling: 1,500W Dual Voice Coil Specs: Fs: 31Hz Qts: 0.43 DCR: 3/coil Vas: 4.21 cuft Xmax:(one way) 1.75" Key design feature: Two spiders designed with a special non-linear Finite Element Analysis (FEA) software are spaced precisely apart to keep the voice coil centered in the motor structure. Woven-in tinsel lead wires into the dual spider so leads do not contact cone during high excursions." [/QUOTE]

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