Jonnyrxt Posted August 25, 2011 Report Posted August 25, 2011 Hey guys just got two Obsidian 12's and looking to build a box for them. I have a 2008 Jeep Liberty that they are going in and would really like to tune it low. Any help would be great. Right now I have them in a 1.5 cube slot port box. Quote
big dee Posted August 26, 2011 Report Posted August 26, 2011 Dawm bro that box is small! You need imo 2 cubes per sub atleast. You have the specs on the subs? Quote
Jonnyrxt Posted August 26, 2011 Author Report Posted August 26, 2011 Obsidian 12" D2: Re: 4.0 Ohm Fs: 33 Hz Qms: 5.21 Qes: 0.56 Qts: 0.51 Vas: 34.4 Le: 2.21 mH BL: 19.1 SPL: 85.4 dB Sd: 490 cm^2 Mms: 243.1 g Xmax: 18mm Xmech: 36mm Power Handling: 600 watts RMS Recommended enclosure info: Sealed ~ 1.0 to 1.5 ft^3 Ported ~ 1.75 to 2 ft^3 @ 30 to 35 Hz Cutout: 11.10" OD: 12.5" Mounting depth: 6.75" Mounting flange to top of surround: 1.25" Displacement: 0.16 ft^3 Quote
Electrodynamic Posted August 26, 2011 Report Posted August 26, 2011 The ideal alignment per 12" woofer is 1.75 ft^3 tuned to 32 Hz. I've got my three 12's in 2 ft^3 each tuned to 30 Hz and the low end is a bit on the retardedly loud side. They are literally tearing my CRX apart bit by bit. I'm having to rip everything out and bolt down the enclosure because it jumps too much if I play screwed music. I enjoy how they sound but the extra 0.25 ft^3 per driver is not necessary in order to get them to play loud or low. Quote Electrodynamic Power handling is not a power requirement! Don't install suckage! Simon Eichenberger is the man. My PM's are disabled.
RAM_Designs Posted August 26, 2011 Report Posted August 26, 2011 3.5-4ft^3 with a low 30's tuning will work well. Unless you're running under 1kw to the pair, there's really no need to go larger. Or you can try a bandpass. Quote Ryan Miskin - owner of RAM Designs I have my PM's turned off, please email at <script data-cfhash='f9e31' type="text/javascript"> /* */</script> 2200+ designs since March 2011...
Jonnyrxt Posted August 29, 2011 Author Report Posted August 29, 2011 Ok guys would love to know how to figure out the dimensions for this box, I am running a Sundown 1500d v2 on them and never really go into port tuning and all that so all the help would be great. Quote
Jonnyrxt Posted September 5, 2011 Author Report Posted September 5, 2011 Ok I am new to the box building so how would I figure out specs for it or where Quote
D-train-13k Posted September 5, 2011 Report Posted September 5, 2011 download the torres box calculator Quote The IrishmanCheck out my build hereXL 4th order wall build logIn Progress:alpine cda HU4th order Bandpass2xl 15's1- ab 400.1 (gonna be two hopefully)4- Crescendo 8's2- xts crecendo supertweeters 2 sq super tweetsMb quart 4.125Mechman 270a alt1- xs D27003- xs XP3000 4- odessey pc1700seller feed back threadhttp://www.stevemeadedesigns.com/board/topic/136418-d-train-13k/
vettedude102 Posted September 5, 2011 Report Posted September 5, 2011 Or you could pay ray or ram to design it. Quote 2 polk audio 4x6'skenwood head-unit 220 amp Mechman alt1979 Corvette 2003 corvette z06 alpine radio and the bose system that came stock
Jonnyrxt Posted September 5, 2011 Author Report Posted September 5, 2011 I did that thing reads like a Chinese phone book, I just need some dimensions and I am good to go Quote
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