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<blockquote data-quote="Trepkos" data-source="post: 6324070" data-attributes="member: 577103">2x 12&quot; Fi Q&#039;s4.0ft^3 Slot-Ported 32hz BoxAQ 2200d Powering them.LPF(Not sure) and SSF(10hz) on the amplifier was maxed, because I&#039;m controlling the subwoofer crossovers from the headunit which is a Kenwood KDC x991, crossed over at 50hz with a -12db/oct slope which only affects the higher frequency range.I was playing some test tones and 30-39hz seems to be the peak output range but I thinking that I would still get decent output at 20-29hz range, while running that range there was lots of flexing and movement and rattling, it sounded personally that the subwoofers were bottoming out more-so than getting a clean low frequency sound.Now the ported box is much louder than the previous sealed box I had the subwoofers in but I think they were able to hit the lower frequencies better.Any explanation from the more educated bassheads on here?</blockquote>

[QUOTE="Trepkos, post: 6324070, member: 577103"] 2x 12" Fi Q's 4.0ft^3 Slot-Ported 32hz Box AQ 2200d Powering them. LPF(Not sure) and SSF(10hz) on the amplifier was maxed, because I'm controlling the subwoofer crossovers from the headunit which is a Kenwood KDC x991, crossed over at 50hz with a -12db/oct slope which only affects the higher frequency range. I was playing some test tones and 30-39hz seems to be the peak output range but I thinking that I would still get decent output at 20-29hz range, while running that range there was lots of flexing and movement and rattling, it sounded personally that the subwoofers were bottoming out more-so than getting a clean low frequency sound. Now the ported box is much louder than the previous sealed box I had the subwoofers in but I think they were able to hit the lower frequencies better. Any explanation from the more educated bassheads on here? [/QUOTE]

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