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<blockquote data-quote="Radiospank" data-source="post: 8709010" data-attributes="member: 640519">Yea you are right a folded horn is not the same size box, it does share the same response(12 db roll off) as a sealed, and t line. However the folded horn acomplishes this with a smaller box and is harder to design, that is why I paid PWK, who is now at AD Car audio and does designs there fyi.The ultimo is decently loud, I did have 2510s running off .5 ohm&nbsp; so I believe I can claim this imo. Even tho there alot of subs that can get louder they have not won any awards for sq nor even have the reviews to compete. Show some respect <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink&nbsp; &nbsp; ;)" loading="lazy" data-shortname=";)" />as for sealed being a step backwards, It is a matter of opinion but I believe the reason it sounds better to some people is the 12 db roll off on the low end (e.g. T line), ported extends much deeper while maintating spl and that can get boomy or reduce the perceived transient response. This is why woofers like JL w7, get that rep for being boomy.</blockquote>

[QUOTE="Radiospank, post: 8709010, member: 640519"] Yea you are right a folded horn is not the same size box, it does share the same response(12 db roll off) as a sealed, and t line. However the folded horn acomplishes this with a smaller box and is harder to design, that is why I paid PWK, who is now at AD Car audio and does designs there fyi. The ultimo is decently loud, I did have 2510s running off .5 ohm so I believe I can claim this imo. Even tho there alot of subs that can get louder they have not won any awards for sq nor even have the reviews to compete. Show some respect ;) as for sealed being a step backwards, It is a matter of opinion but I believe the reason it sounds better to some people is the 12 db roll off on the low end (e.g. T line), ported extends much deeper while maintating spl and that can get boomy or reduce the perceived transient response. This is why woofers like JL w7, get that rep for being boomy. [/QUOTE]

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