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Sundown SD4-12d4 Ported Enclosure help
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<blockquote data-quote="NSTALN" data-source="post: 8690023" data-attributes="member: 588169"><p>OK ported box gurus...I have a new truck, a 2019 Nissan Frontier Crew-cab. I has very little space under the rear seat but I should be able to shoe-horn a Sundown SD4-12d4. Sundown only recommends sealed...but I was curious what sort of a ported enclosure y'all might come up with. I'll only be able to squeeze about 1.25 to 1.5 cubes total so a ported 12 may be unrealistic. I'll also post the TSP's for the 10 which may be a better choice.</p><p></p><p>The key here is smallest ported enclosure tuned low...I only intend to feed the sub 500rms via a JD HD 900/5</p><p></p><p>Re - 7.0052ohms</p><p>Fs - 26.7489hz</p><p>Qes. - .7374</p><p>Qms - 5.5061</p><p>Qts - .6503</p><p>Le - 8.6610mh (@ 1khz)</p><p>Sd - 78.5398 in^2</p><p>Vas - 64.3194 L</p><p>BL - 17.9033</p><p>Mms - 200.754g</p><p>Cms - 176.3448 uM/N</p><p>Sensitivity - 83.9731 db @1w/1m</p><p>Sensitivity - 84.5498 db @2.83Vrms/1m</p><p></p><p></p><p>Thanks folks!</p><p></p><p>Just to clarify...I'm not looking for exact dimensions to fit under my seat, I'm looking for airspace/tuning/port recomendations specific to the sub...I'll figure out the logistics of making it fit later.</p></blockquote><p></p>
[QUOTE="NSTALN, post: 8690023, member: 588169"] OK ported box gurus...I have a new truck, a 2019 Nissan Frontier Crew-cab. I has very little space under the rear seat but I should be able to shoe-horn a Sundown SD4-12d4. Sundown only recommends sealed...but I was curious what sort of a ported enclosure y'all might come up with. I'll only be able to squeeze about 1.25 to 1.5 cubes total so a ported 12 may be unrealistic. I'll also post the TSP's for the 10 which may be a better choice. The key here is smallest ported enclosure tuned low...I only intend to feed the sub 500rms via a JD HD 900/5 Re - 7.0052ohms Fs - 26.7489hz Qes. - .7374 Qms - 5.5061 Qts - .6503 Le - 8.6610mh (@ 1khz) Sd - 78.5398 in^2 Vas - 64.3194 L BL - 17.9033 Mms - 200.754g Cms - 176.3448 uM/N Sensitivity - 83.9731 db @1w/1m Sensitivity - 84.5498 db @2.83Vrms/1m Thanks folks! Just to clarify...I'm not looking for exact dimensions to fit under my seat, I'm looking for airspace/tuning/port recomendations specific to the sub...I'll figure out the logistics of making it fit later. [/QUOTE]
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