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<blockquote data-quote="kush-divinity" data-source="post: 5660387" data-attributes="member: 599719">I know the &quot;rules&quot; of port area vs. volume.But, in my experience, low powered systems seem to have flatter response with a port that is a tad too small. All my builds are for daily use. I listen to older rap and country, and use my epicenter alot. My concern is the 25-40hz range, any higher is taken care of by a pair of sealed Memphis PR10, bandpassed from 50-125hz.My big wonder is: 4 very sensitive 18&#039;s or 15&#039;s playing only 25-45 hz, do I really need a massive port? Im not trying for a hair trick. I just want to look &quot;cute&quot;, but not overplay my mids. I want to roll an extremely flat curve, maybe increasing from 35 and lower. I want a rumble.Maybe, I would better served with a sealed box?Here is reasoning to low power: I am limited to 550rms @ 1ohm, and 1100 @ .5ohm. My amp will play at full volume all day at .5ohm without overheating. I am still debating on my subwoofer choice, as nice, cheap, low requirement 18&#039;s are hard to find.</blockquote>

[QUOTE="kush-divinity, post: 5660387, member: 599719"] I know the "rules" of port area vs. volume. But, in my experience, low powered systems seem to have flatter response with a port that is a tad too small. All my builds are for daily use. I listen to older rap and country, and use my epicenter alot. My concern is the 25-40hz range, any higher is taken care of by a pair of sealed Memphis PR10, bandpassed from 50-125hz. My big wonder is: 4 very sensitive 18's or 15's playing only 25-45 hz, do I really need a massive port? Im not trying for a hair trick. I just want to look "cute", but not overplay my mids. I want to roll an extremely flat curve, maybe increasing from 35 and lower. I want a rumble. Maybe, I would better served with a sealed box? Here is reasoning to low power: I am limited to 550rms @ 1ohm, and 1100 @ .5ohm. My amp will play at full volume all day at .5ohm without overheating. I am still debating on my subwoofer choice, as nice, cheap, low requirement 18's are hard to find. [/QUOTE]

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