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6th order blowthrough 2 Wolfram AU18s on 8k.
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<blockquote data-quote="Buck" data-source="post: 8674431" data-attributes="member: 591582"><p>Your sealed size is small IMO. I haven't ran any numbers but not even 3 cubes per 18 seems small. Do you know what the Fc/Frc of the sealed chamber is? What is the port area?</p><p></p><p>For a 6th, if you want musical I'd do the small end of a ported box for a rear chamber. Idk what those subs want but you don't want it undersized. I don't know why people have that perception of undersized rear chambers in bandpasses for music.</p><p></p><p>I mean bro I did a design for two older x -15's on a sundown 3500 tuned at 43 hz 4th order. His numbers are really close to yours. If you want lows you MUST have a proper rear chambers. I think he peaked in the 150's @ 28 hz IIRC. </p><p></p><p>I just add these videos as proof. Each ones of these x 15's had 3 cubes of airspace EACH. He shrunk it later on as he decided he didn't want to focus on lows as much, but my whole point is that you have to do your airspace right, whether 4th or 6th.</p><p></p><p>[MEDIA=youtube]OLqIlqdX6-c[/MEDIA]</p></blockquote><p></p>
[QUOTE="Buck, post: 8674431, member: 591582"] Your sealed size is small IMO. I haven't ran any numbers but not even 3 cubes per 18 seems small. Do you know what the Fc/Frc of the sealed chamber is? What is the port area? For a 6th, if you want musical I'd do the small end of a ported box for a rear chamber. Idk what those subs want but you don't want it undersized. I don't know why people have that perception of undersized rear chambers in bandpasses for music. I mean bro I did a design for two older x -15's on a sundown 3500 tuned at 43 hz 4th order. His numbers are really close to yours. If you want lows you MUST have a proper rear chambers. I think he peaked in the 150's @ 28 hz IIRC. I just add these videos as proof. Each ones of these x 15's had 3 cubes of airspace EACH. He shrunk it later on as he decided he didn't want to focus on lows as much, but my whole point is that you have to do your airspace right, whether 4th or 6th. [MEDIA=youtube]OLqIlqdX6-c[/MEDIA] [/QUOTE]
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6th order blowthrough 2 Wolfram AU18s on 8k.
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