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<blockquote data-quote="geolemon" data-source="post: 314851" data-attributes="member: 547749">Oh yikes...Rethink that enclosure...&quot;universal&quot; and &quot;bandpass&quot; are oxymorons.. seriously.&nbsp; Eek..You NEED to design a bandpass enclosure around the very unique Qts and frequency response property signatures of each individual sub out there... subs are not even close to being &quot;all the same&quot;.Simple sealed, or ported enclosures are generally much more &quot;universal&quot;.. although some would argue only sealed boxes really fit the &quot;universal&quot; role.Even in deciding between sealed vs. ported though, you need to know what type of enclosure your subwoofer will be best suited to... some subs have high Qts properties which make them best suited to sealed, while others have low Qts properties which make them best suited to ported enclosures.As far as bandpass enclosures go, that&#039;s only ONE (to determine 4th or 6th order BP) of a whole bunch of considerations as to what woofer will fit what bandpass type, and what chamber ratio&#039;s/volumes/tuning frequencies will be used.And I don&#039;t want to do any more bubble-bursting...But has that Visonik amp been tested?I know it&#039;s understood that Visonik is a brand more akin to Boss than it is to Brax...But look at that amp, and those power claims.350x2?&nbsp; And with no impedance... that may be 350x2 at 2 ohms, which would be a 125x2 amp, not a 350x2 amp... and even that is if that&#039;s not an &quot;optimistic&quot; rating.I think I&#039;d locate a more reputable brand, you&#039;ll be glad in the long run, not only because the better amp will still be with you, without any annoying little &quot;this&quot; and &quot;that&quot;s, but also because you wont&#039; be wanting to upgrade away from &quot;that POS&quot; down the road. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif</blockquote>

[QUOTE="geolemon, post: 314851, member: 547749"] Oh yikes... Rethink that enclosure... "universal" and "bandpass" are oxymorons.. seriously. Eek.. You NEED to design a bandpass enclosure around the very unique Qts and frequency response property signatures of each individual sub out there... subs are not even close to being "all the same". Simple sealed, or ported enclosures are generally much more "universal".. although some would argue only sealed boxes really fit the "universal" role. Even in deciding between sealed vs. ported though, you need to know what type of enclosure your subwoofer will be best suited to... some subs have high Qts properties which make them best suited to sealed, while others have low Qts properties which make them best suited to ported enclosures. As far as bandpass enclosures go, that's only ONE (to determine 4th or 6th order BP) of a whole bunch of considerations as to what woofer will fit what bandpass type, and what chamber ratio's/volumes/tuning frequencies will be used. And I don't want to do any more bubble-bursting... But has that Visonik amp been tested? I know it's understood that Visonik is a brand more akin to Boss than it is to Brax... But look at that amp, and those power claims. 350x2? And with no impedance... that may be 350x2 at 2 ohms, which would be a 125x2 amp, not a 350x2 amp... and even [I]that[/I] is if that's not an "optimistic" rating. I think I'd locate a more reputable brand, you'll be glad in the long run, not only because the better amp will still be with you, without any annoying little "this" and "that"s, but also because you wont' be wanting to upgrade away from "that POS" down the road. [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] [/QUOTE]

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