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<blockquote data-quote="n2audio" data-source="post: 3514081" data-attributes="member: 540940">according to winISD the port area of a 4&quot; port would result in pretty significant port noise.&nbsp; The aero may have worked fine, but I decided to go with what I&#039;m familiar with.I went with a 9x2 slot which gives me 33% more port area than a 4&quot; round.So far I&#039;ve only tested it with my $75 pyramid (eminence) sub.&nbsp; Once on my 100w home receiver/amp which surprisingly didn&#039;t sound 1/2 bad, and once on my wife&#039;s Vibe 430 on a pair of bridged channels.With the vibe at around 300w this sub/enclosure seriously pounds.It should be interesting once I get it installed in my &#039;Tour with the opti1000.1D at 400w.Assuming that all comes together I&#039;ll be ordering the Opti1232D as a Christmas gift, and dropping the 1000.1 to 1 ohm for 1000w rms.I hope my trunk holds together.</blockquote>

[QUOTE="n2audio, post: 3514081, member: 540940"] according to winISD the port area of a 4" port would result in pretty significant port noise. The aero may have worked fine, but I decided to go with what I'm familiar with. I went with a 9x2 slot which gives me 33% more port area than a 4" round. So far I've only tested it with my $75 pyramid (eminence) sub. Once on my 100w home receiver/amp which surprisingly didn't sound 1/2 bad, and once on my wife's Vibe 430 on a pair of bridged channels. With the vibe at around 300w this sub/enclosure seriously pounds. It should be interesting once I get it installed in my 'Tour with the opti1000.1D at 400w. Assuming that all comes together I'll be ordering the Opti1232D as a Christmas gift, and dropping the 1000.1 to 1 ohm for 1000w rms. I hope my trunk holds together. [/QUOTE]

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