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Second Skin Audio

First shot at a 4th order design


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Well, to be honest, i dont know shit about bandpass boxes. I know they have potential to sound good and get loud. So im thinking of trying one out in the build im hoping to start in the next month or so (about damn time). The woofers are best suited for sealed supposedly, but they liked a ported box, got loud and low. But im in the mood to try something different, so heres this. It will be for 2 Clarion 12s, gettin around 400 each (supposedly 450 but i doubt that). If this doesnt work i can always just build a regular old ported box. The box will more than likely end up facing forwards firing into the seat back from my trunk, sealed from the rest of the trunk. Rear seat doesnt fold, but the box is pretty big, and theres no holes in the rear deck. So id be afraid of the enclosure blocking all the sound from getting into the cabin.

Enclosure

4thorderforclarions.png

Bit of info

infoon4th.png

Response chart

frequencyresponsefor4thorder.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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I had a similar problems with the seat not folding down in my car so what did i do I TOOK IT OUT lol. I still have the bottom part in and finished off the back rest with foam and carpet over it so all there is is the opening. Try to do something like this you arent hearing half the bass compared to if you didnt have the seat in there

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BUMP

come on, i know theres some bandpass guys on here, just take a quick look, lmk if it looks right.

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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Ya, im going for loud and musical. Ill be happy if it works, if it doesnt, guess i will just have to keep trying more and more. I still got a few months to read up though. Might buy the loudspeaker design cookbook to give myself something ill actually want to read and gain some knowledge.

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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from lookin at that chart it looks like your gonna peak at like 90-95hz which is high as hell. you dont want that at all cuz it wont hit no lows at all with a peak that high. and it finally comes to 0db at just over 40hz. so idk if your try for a high tl score cuz thats all that box from the chart would be good for

2015 silverado crew cab

nothing atm but soon...

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I'm no expert by any means, but the sealed chambers look pretty big, and the ported chamber looks small.

x2 you want smaller sealed chambers and a bigger ported area roughly 3-1 ratio (ported to sealed) and your by looking at your port length it looks like your trying to tune it low which is what you dont want

R.I.P!

(Nov-29-2009)

92 explorer

- 4 Atomic Apxx 15s duel .7s - 4rth order bandpass wall -4 powerbass XA-3000D's - 16 8volt batts wired to 16 volts - (9+/9-) runs 0gauge - 152.3 Db @ 29hz

current build

97 chevy lumina4 - 1 Atomic Apx 18 - 6 cube slot port trunk sealed off - 1 powerbass XA-3000D - 2 optima G31s in spare tire18 1 run 1/0

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x2 you want smaller sealed chambers and a bigger ported area roughly 3-1 ratio (ported to sealed) and your by looking at your port length it looks like your trying to tune it low which is what you dont want

Couldn't have said it better. The sealed chambers tend to seem really small. For instance, my gf's two 10"s are in .7 cubes, into 2.1 cubes.

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