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Low Earth Orbit
DIY Audio
Small-ish Home Theater Subwoofer
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<blockquote data-quote="Loren Jones" data-source="post: 101063" data-attributes="member: 829"><p>Re: Small-ish Home Theater Subwoofer</p><p></p><p>Bennett,</p><p></p><p>So did you ever do anything with this?</p><p></p><p>That looks like it would be a totally cool and fun project. Those should give plenty of extra bass to round out almost all music listening in the LF when your main speakers have 4" woofers. I would think 30 net liters per woofer tuned to 40 hz Fb will give you a very nice sounding "mini Claire". I totally understand wanting to stay in the B&C catalog. I am using a pair of 15BG100's in my main speakers in my living room which have some 18Sound 6" mids and a Beyma AMT tweeter. The BG woofers are a real nice hybrid between home hifi and pro style subs. In my application they are just unbelievably nice. I have greater than 90 db system sensitivity all the way down to 21 hz or so. They do well with a tuning below Fs. Thanks for a great driver. </p><p></p><p>Anyway, I modeled the custom 4 ohm 8" with Unibox (which I prefer to WinISD personally) in 30 liters net as mentioned above. For 40 hz Fb the 10 cm diameter ports need to be 90 cm long, but it seems like you could get by with a little less port area and still be OK on port compression if the length was not manageable. But I guess you could ask Phil about that point. I put Xmax at 7mm since the custom woofer didn't have the Xvar number and I thought I'd go a little less than the Xvar of the 8BG. Here are some pics of the Unibox output...I'd love to hear what you ended up with.</p><p></p><p>[ATTACH]152709[/ATTACH]</p></blockquote><p></p>
[QUOTE="Loren Jones, post: 101063, member: 829"] Re: Small-ish Home Theater Subwoofer Bennett, So did you ever do anything with this? That looks like it would be a totally cool and fun project. Those should give plenty of extra bass to round out almost all music listening in the LF when your main speakers have 4" woofers. I would think 30 net liters per woofer tuned to 40 hz Fb will give you a very nice sounding "mini Claire". I totally understand wanting to stay in the B&C catalog. I am using a pair of 15BG100's in my main speakers in my living room which have some 18Sound 6" mids and a Beyma AMT tweeter. The BG woofers are a real nice hybrid between home hifi and pro style subs. In my application they are just unbelievably nice. I have greater than 90 db system sensitivity all the way down to 21 hz or so. They do well with a tuning below Fs. Thanks for a great driver. Anyway, I modeled the custom 4 ohm 8" with Unibox (which I prefer to WinISD personally) in 30 liters net as mentioned above. For 40 hz Fb the 10 cm diameter ports need to be 90 cm long, but it seems like you could get by with a little less port area and still be OK on port compression if the length was not manageable. But I guess you could ask Phil about that point. I put Xmax at 7mm since the custom woofer didn't have the Xvar number and I thought I'd go a little less than the Xvar of the 8BG. Here are some pics of the Unibox output...I'd love to hear what you ended up with. [ATTACH=CONFIG]152709.vB5-legacyid=7963[/ATTACH] [/QUOTE]
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