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Second Skin Audio

Tuning a 4th Order


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ive spent quite a few hours playing with BBP6, trying different tunings and volumes to get which response curve and everything looks like it would work best to me. If it does, great, if not, time to build another box. Most people say ported area should be 3-4 times that of sealed, but it is all woofer dependent. Going by the response curves ive gotten ive decided im going to be trying 3 chambes, 2 sealed, one ported. 1 cube in each sealed chamber, 3.2 or so in the ported, with a big ol 8" port about 4" long. Heres a pic. Went with the untypical ration because it gave the smoothest curve, widest bandwidth, and most gradual peak. Other ones had a real strong peak around 50 Hz. I dont want a boomy box, its an SQL build. Supposed to get loud but sound good doing it, which is why i wanted to try a 4th order in the first place, becasue they can be very musical from what everyone says.

4thorder3sketchup.png

And the response curve im getting

4thorder3.png

woman..cant live with em...cant shoot em...guess were all fucked

You might be a Redneck if you use your leftover gutters for a speaker box port...

YOU JUST LOST THE GAMER.I.P. Blazer=========================Last setup was in the 141s on music (37hz) with 2 12s and 1kw in a 4dr blazer.2010 Mitsubishi Lancer DE2 12in Clarions (kept from blazer)HiFonics BRZ1700.1d (at 2 ohms BLOWN) [JBL GTS180X for subs currently 60wRMS x2ch!!!!!! This works for till i get the blown amp fixed] Alpine 4ch salvaged from blazer (currently near death)9887 peerless 7s in the doors and CDT tweeters ran active no speakers in the rearKintik HC1400 under the hood.metered once a while ago, dont remember it...was piss poor compared to the blazer, mid 130s i think....looking to replace subs and amp when i have money.

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