HUMBOLDT_knock Posted May 9, 2009 Report Share Posted May 9, 2009 So I am using WinISD Alpha enclosure software. It shows a great output gain on my new vented enclosure verses my way too small sealed enclosure. I am however worried about the Air Velocity of the port. I am very limited on space so I had to only use 24 Sq. Inches of port space for my 2) Orion HCCA 10.2. They are getting 2000W between the two woofer. Orions dimensions called for only 18 Sq Inches so I figured 24 would be better. The WinISD program shows a port velocity for my vented encolsure of 187 ft/s at 35Hz. Is this too much Port velocity?? Per Orions dimensions I get 238 ft/s of port velocity. Since I am much lower than the Orion design I am sure this would be better but is 187 ft/s a lot of port velocity or what? I just dont know what # is good or bad Quote Link to comment Share on other sites More sharing options...
cunokyle Posted May 9, 2009 Report Share Posted May 9, 2009 So I am using WinISD Alpha enclosure software. It shows a great output gain on my new vented enclosure verses my way too small sealed enclosure.I am however worried about the Air Velocity of the port. I am very limited on space so I had to only use 24 Sq. Inches of port space for my 2) Orion HCCA 10.2. They are getting 2000W between the two woofer. Orions dimensions called for only 18 Sq Inches so I figured 24 would be better. The WinISD program shows a port velocity for my vented encolsure of 187 ft/s at 35Hz. Is this too much Port velocity?? Per Orions dimensions I get 238 ft/s of port velocity. Since I am much lower than the Orion design I am sure this would be better but is 187 ft/s a lot of port velocity or what? I just dont know what # is good or bad You really want to keep it below 110ft/sec and even that is high. You really want to keep that number low and I usually aim for less than 70 ft/sec. Quote The woofers might suck all the air out your lungs (if you stand too close) When the monster hums Link to comment Share on other sites More sharing options...
HUMBOLDT_knock Posted May 9, 2009 Author Report Share Posted May 9, 2009 well, I am so limited in size ,im pretty much screwed. I figured that would be too much. In order to bring that down I would have to double the size of my port which would put my port length at like 40" which would be impossible for my size constraints. I hate being limited to size! Quote Link to comment Share on other sites More sharing options...
07sOnAtA sp.ed Posted May 9, 2009 Report Share Posted May 9, 2009 well, I am so limited in size ,im pretty much screwed. I figured that would be too much. In order to bring that down I would have to double the size of my port which would put my port length at like 40" which would be impossible for my size constraints. I hate being limited to size! yeah, ntm those subs move, i have their big brother (HCCA 12's) and they move almost 4'' inches from peak to peak, so they do displace air rather quickly Quote CURRENTLY UNDER RE-CONSTRUCTION 2008 Hyundai Sonata Team T3 Audio Team Deadly Hertz Team SMD (Street Motivated Devastation) Link to comment Share on other sites More sharing options...
HUMBOLDT_knock Posted May 9, 2009 Author Report Share Posted May 9, 2009 Well, I put a subsonic filter on this program and it brings my air velocity down to 152 ft/s with the filter at 30Hz. With the filter at 37Hz the velocity is down to 127 ft/s I have the 37Hz subsonic filter built into my Line driver but with my enclosure tuned to 36Hz I know I dont want to run that high of a freq. on my subsonic. Quote Link to comment Share on other sites More sharing options...
aznboi3644 Posted May 10, 2009 Report Share Posted May 10, 2009 yeah, ntm those subs move, i have their big brother (HCCA 12's) and they move almost 4'' inches from peak to peak, so they do displace air rather quickly Excursion has little to do with maximum port velocity. A sub with 1" of excursion could generate more port air velocity than your sub with "4 inches p-p" excursion Quote Link to comment Share on other sites More sharing options...
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