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Low Earth Orbit
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Harford Sound 118HP Subwoofers
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<blockquote data-quote="Evan Kirkendall" data-source="post: 7128" data-attributes="member: 5"><p>Hey guys,</p><p>New year, and I figured a new thread. Finished up the "improved" model of my single 18" subwoofers this past week: </p><p></p><p><img src="http://soundforums.net/attachment.php?attachmentid=6549&stc=1&d=1365345877" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" /></p><p></p><p><img src="http://soundforums.net/attachment.php?attachmentid=6550&stc=1&d=1365345904" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" /></p><p></p><p>These feature a slightly larger port, a few changes on the internal bracing, and handles rotated 90 degrees for easier handling. The results were pretty impressive. The HP model features a -3 point of about 30hz, and some added output in the 50-60hz range. A nice little improvement over the old models:</p><p></p><p>HS118:</p><p><img src="http://soundforums.net/attachments/diy-audio/3730d1336514732-my-recent-ventures-into-diy-audio-118smaart.jpg.att" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" /></p><p></p><p>And, the HS118HP:</p><p><img src="http://soundforums.net/attachment.php?attachmentid=6548&stc=1&d=1365345790" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" /></p><p></p><p>A block of 4 sounds good, and a block of 6 sounds even better! </p><p></p><p><img src="http://soundforums.net/attachment.php?attachmentid=6551&stc=1&d=1365345947" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" /></p><p></p><p><img src="http://soundforums.net/attachment.php?attachmentid=6552&stc=1&d=1365345978" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" /></p><p></p><p>Of course, proper power & processing is always very important! <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile :)" data-smilie="1"data-shortname=":)" /></p><p></p><p><img src="http://soundforums.net/attachment.php?attachmentid=6553&stc=1&d=1365346001" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" /></p><p></p><p></p><p>Not a lot going on in the DSP world for the subs though... High pass at 30hz, low pass at 85hz. A little cut at 76hz is all that is required for EQ. The rest is in the box design! I'm up to 14 of these cabs now, and I plan to keep building more! They are impressive little boxes, weighing in at just over 92lbs. They truck pack, they stack and they sound good! I also used a 2 stage epoxy when I painted them this time around. Ended up with a super tough, nice looking finish. </p><p></p><p></p><p></p><p></p><p></p><p>Evan</p></blockquote><p></p>
[QUOTE="Evan Kirkendall, post: 7128, member: 5"] Hey guys, New year, and I figured a new thread. Finished up the "improved" model of my single 18" subwoofers this past week: [img]http://soundforums.net/attachment.php?attachmentid=6549&stc=1&d=1365345877[/img] [img]http://soundforums.net/attachment.php?attachmentid=6550&stc=1&d=1365345904[/img] These feature a slightly larger port, a few changes on the internal bracing, and handles rotated 90 degrees for easier handling. The results were pretty impressive. The HP model features a -3 point of about 30hz, and some added output in the 50-60hz range. A nice little improvement over the old models: HS118: [img]http://soundforums.net/attachments/diy-audio/3730d1336514732-my-recent-ventures-into-diy-audio-118smaart.jpg.att[/img] And, the HS118HP: [img]http://soundforums.net/attachment.php?attachmentid=6548&stc=1&d=1365345790[/img] A block of 4 sounds good, and a block of 6 sounds even better! [img]http://soundforums.net/attachment.php?attachmentid=6551&stc=1&d=1365345947[/img] [img]http://soundforums.net/attachment.php?attachmentid=6552&stc=1&d=1365345978[/img] Of course, proper power & processing is always very important! :) [img]http://soundforums.net/attachment.php?attachmentid=6553&stc=1&d=1365346001[/img] Not a lot going on in the DSP world for the subs though... High pass at 30hz, low pass at 85hz. A little cut at 76hz is all that is required for EQ. The rest is in the box design! I'm up to 14 of these cabs now, and I plan to keep building more! They are impressive little boxes, weighing in at just over 92lbs. They truck pack, they stack and they sound good! I also used a 2 stage epoxy when I painted them this time around. Ended up with a super tough, nice looking finish. Evan [/QUOTE]
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