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Low Earth Orbit
DIY Audio
DIY a 40-20hz sub?
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<blockquote data-quote="Helge A. Bentsen" data-source="post: 218154" data-attributes="member: 263"><p>I have two kind of subs. One that drops off around 37ish Hz, one that drops off at 28ish Hz. I played around using the 28hz subs as infra subs for the other subs, sounded quite nice with a lot of useable output. This got me thinking, have anybody ever DIY'ed a 40-20hz sub for live sound use?</p><p></p><p>Ran a few simulations in WinISD, looks like a b&c 21DS115 tuned to 20hz could get there in a 400L box. With a big port (airspeed roughly 19m/s) the total volume/size is comparable to one 2x18". There's a lot of DIY designs available online, but I haven't found one targeted specifically for going low except from the home theatre people.</p></blockquote><p></p>
[QUOTE="Helge A. Bentsen, post: 218154, member: 263"] I have two kind of subs. One that drops off around 37ish Hz, one that drops off at 28ish Hz. I played around using the 28hz subs as infra subs for the other subs, sounded quite nice with a lot of useable output. This got me thinking, have anybody ever DIY'ed a 40-20hz sub for live sound use? Ran a few simulations in WinISD, looks like a b&c 21DS115 tuned to 20hz could get there in a 400L box. With a big port (airspeed roughly 19m/s) the total volume/size is comparable to one 2x18". There's a lot of DIY designs available online, but I haven't found one targeted specifically for going low except from the home theatre people. [/QUOTE]
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DIY a 40-20hz sub?
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