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Car Audio Equipment
Subwoofers
RL-p vs XXX
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<blockquote data-quote="idiot" data-source="post: 694401" data-attributes="member: 550902"><p>I’ve seen RE recommend a sealed range of 0.8-1.2 ft.^3 for that sub… the volumes on their website are apparently not optimal. (Placed for marketing reasons, perhaps? I’m not sure what Q they provide.) Be sure to do a follow-up when you build a larger box. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif</p><p></p><p>However, I <em>can</em> vouch for the low extension of the RL-p. Due to amp difficulties, I’m only able to send my 15” ~300W for now, and it’s still able to grab hold and shake my seats and my chest quite effectively with a 20Hz wave. The efficiency surprised me. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif And although I have no personal experience with it, I would imagine that the XXX can do the same, even if it requires a larger enclosure.</p><p></p><p>I have a question in regard to your SQ listening. Since the benefits of XBL^2 become more pronounced as excursion increases, did you analyze the "quality" of bass at higher volumes, when distortion would theoretically affect the SS sub more than the XXX? I’d be curious to know if you could detect a real-world difference in a sub with Adire’s Bl optimizations versus one without…</p><p></p><p>Also, did the XXX receive any type of break-in? Some agree and others dismiss the necessity, but the two subs should be put on as level a playing field as possible.</p></blockquote><p></p>
[QUOTE="idiot, post: 694401, member: 550902"] I’ve seen RE recommend a sealed range of 0.8-1.2 ft.^3 for that sub… the volumes on their website are apparently not optimal. (Placed for marketing reasons, perhaps? I’m not sure what Q they provide.) Be sure to do a follow-up when you build a larger box. [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] However, I [I]can[/I] vouch for the low extension of the RL-p. Due to amp difficulties, I’m only able to send my 15” ~300W for now, and it’s still able to grab hold and shake my seats and my chest quite effectively with a 20Hz wave. The efficiency surprised me. [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] And although I have no personal experience with it, I would imagine that the XXX can do the same, even if it requires a larger enclosure. I have a question in regard to your SQ listening. Since the benefits of XBL^2 become more pronounced as excursion increases, did you analyze the "quality" of bass at higher volumes, when distortion would theoretically affect the SS sub more than the XXX? I’d be curious to know if you could detect a real-world difference in a sub with Adire’s Bl optimizations versus one without… Also, did the XXX receive any type of break-in? Some agree and others dismiss the necessity, but the two subs should be put on as level a playing field as possible. [/QUOTE]
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