Mikewood21 Posted February 25, 2012 Author Report Posted February 25, 2012 you have 85.5 sq inches of port for 4 15s... No I have two ports that were 85.5
Mikewood21 Posted February 25, 2012 Author Report Posted February 25, 2012 you have 85.5 sq inches of port for 4 15s... No I have two ports that were 85.5
IH8PunkRok Posted February 25, 2012 Report Posted February 25, 2012 Still small but better -Matt2005 Dodge Magnum RTJVC KD-AVX1 2 PPI S580.2 Obsidian Audio ST1 Horn Tweeters PRV 8MB450s Audio Legion 3500.1D 2 RE MT 18s 360 ah LiFePO4 BatterySHCA 2/0 155.2 @ 29 hzKicker CVR 15's buildDD 3512e buildMini T-Line Build(6) 8s BuildNightshade 15s Wall BuildMagnum AB XFL 12s BuildNewest Magnum Build
Sanitarium Posted February 25, 2012 Report Posted February 25, 2012 LOL. noobs blaiming equipment in this thread. you should be lookin for between 200 and 275 square inches of port, not 85.5 or 171. Time for a rebuild. shoot for 16 cubes net < that's after all displacements and 250 ish square inches of port.
Sanitarium Posted February 25, 2012 Report Posted February 25, 2012 just double checked your box. looks like you're running... at 85.5 square inches of port, 13.25 cubes, 6.4 square inches of port per cube, with a tuning of 23 (wouldn't matter with that small of a port) and with 171 square inches of port (do you really have 2 ports or are you just trying to make yourself look better?) you're running 12.17 cubes (entirely too small for 4 15's) , with 14 square inches of port per cube (doesn't matter if the box is entirely too small) with a tuning of 31.63
IH8PunkRok Posted February 25, 2012 Report Posted February 25, 2012 Go to sleep brian -Matt2005 Dodge Magnum RTJVC KD-AVX1 2 PPI S580.2 Obsidian Audio ST1 Horn Tweeters PRV 8MB450s Audio Legion 3500.1D 2 RE MT 18s 360 ah LiFePO4 BatterySHCA 2/0 155.2 @ 29 hzKicker CVR 15's buildDD 3512e buildMini T-Line Build(6) 8s BuildNightshade 15s Wall BuildMagnum AB XFL 12s BuildNewest Magnum Build
Sanitarium Posted February 25, 2012 Report Posted February 25, 2012 Go to sleep brian but i just woke up from an 8 hour nap
Mikewood21 Posted February 25, 2012 Author Report Posted February 25, 2012 just double checked your box. looks like you're running... at 85.5 square inches of port, 13.25 cubes, 6.4 square inches of port per cube, with a tuning of 23 (wouldn't matter with that small of a port) and with 171 square inches of port (do you really have 2 ports or are you just trying to make yourself look better?) you're running 12.17 cubes (entirely too small for 4 15's) , with 14 square inches of port per cube (doesn't matter if the box is entirely too small) with a tuning of 31.63 No reason to lie, videos on YouTube just type in mnorwood01 if you need proof,, and were u get 12.17 cubes from, your math is wrong.. 43 times 22 times 33. Equals 31,218 divided by 1728 equals 18.06 cubes times .82 equals 14.8 net divided by four equals 3.7 cubes a sub.
Sanitarium Posted February 25, 2012 Report Posted February 25, 2012 just double checked your box. looks like you're running... at 85.5 square inches of port, 13.25 cubes, 6.4 square inches of port per cube, with a tuning of 23 (wouldn't matter with that small of a port) and with 171 square inches of port (do you really have 2 ports or are you just trying to make yourself look better?) you're running 12.17 cubes (entirely too small for 4 15's) , with 14 square inches of port per cube (doesn't matter if the box is entirely too small) with a tuning of 31.63 No reason to lie, videos on YouTube just type in mnorwood01 if you need proof,, and were u get 12.17 cubes from, your math is wrong.. 43 times 22 times 33. Equals 31,218 divided by 1728 equals 18.06 cubes times .82 equals 14.8 net divided by four equals 3.7 cubes a sub. My math isn't wrong, you're just not figuring NET. your port displaces 2.16 cubes while your subs displace 0.8 cubes on the 171 square inch of port box.. while 85.5 cube version, the port displaces 1.08. Edit: also all my figuring assumes a double baffle.. please dear god don't put 4 15's on a single baffle...
Mikewood21 Posted February 25, 2012 Author Report Posted February 25, 2012 Bro ya math is still wrong,,, when u multipy your total box volume times .82 u get your net... Go to audioque and use the formula...
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