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<blockquote data-quote="shredder1" data-source="post: 8915025" data-attributes="member: 658920"><p>My advice is run a pair, HDX4-18s are no joke and 8K sounds about right for daily and demos. Its a 4" coil so expect to go big on the power. I will say again... 5.5ft3 ea /w/ 16-17in2^ft3 of port ea should be spot on in a shared chamber enclosure. </p><p></p><p>21in2^ft3? Or just 21in2?</p><p></p><p>Smaller airspace /w/ a low tune will kill some output generally but in a wall with enuff power? At the very least you'll have low end extension for days. Larger airspace can get peaky /w/ a hard rolloff under tuning in a ported enclosure like you said.</p></blockquote><p></p>
[QUOTE="shredder1, post: 8915025, member: 658920"] My advice is run a pair, HDX4-18s are no joke and 8K sounds about right for daily and demos. Its a 4" coil so expect to go big on the power. I will say again... 5.5ft3 ea /w/ 16-17in2^ft3 of port ea should be spot on in a shared chamber enclosure. 21in2^ft3? Or just 21in2? Smaller airspace /w/ a low tune will kill some output generally but in a wall with enuff power? At the very least you'll have low end extension for days. Larger airspace can get peaky /w/ a hard rolloff under tuning in a ported enclosure like you said. [/QUOTE]
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