Port Area VS Low Tuning

[TRTC360]

Im tuned to 23hz with 11sqin and love it, 10hz full tilt? No problem. My 2 18s wall was 37hz with 15sqin and i hated it, had a horrible drop off below 33hz and above 40hz. It was a very peaky box.

that's what I hate about being tuned to 36, songs that get stupid low my subs are basically free airing, sure my box is a shitty prefab but it's still tuned to 36hz, I just wish I could tune lower than 36 and stay with 14sqin of port per cube.

[LoudNLow931]

Ive always been a fan of smaller port area/less port per sq in, can play a much wider range. Even though im tuned to 23hz i can play 10-50hz no problem.

[kalilac619]

Totally agree my current box is 10sq in per cuft tuned at 30 plays easily to 18hz and up to 65hz

[412 CVX]

If this helps, the subs i'm running are AB XFL's 12's, lots of people have told me they aren't the best subs for lows but I beg to differ, my friends box tuned to 30hz with 14sqin of port per cube, running HDC3 12's on about 2k, digs deep down into the 20's which are the types of lows i really like, 36hz won't really get as low as I want it to

Why would you tune that low with HDC3's? that's just stupid.

I completely disagree with you loud n-low. I don't see much sense at all tuning to 20 hz. It's all application dependent, did a box for a buddy's CVX 12's. 4 cubes with 61 square inches of port tuned to 34. drops down to the 20's no problem.

OP, isn't the whole point of a removable port to be able to play with tuning and port area? why even ask, just try it and find out what you like.

I swear all the vets have gone to sleep..

[412 CVX]

I am planning 5000wrms on 2 15's want to be able to do hair tricks. How important is port area? So would 14sqin per cube be better than 12sqin per cube tuned at 33hz

you want more port area dude. trust me. you'll move a lot more air that way. the less port you have the closer it gets to a leaky sealed box.

[CJ18]

I cant explain why it is and dont really care to know the reasoning behind it, but in the builds I have done, the lower that you want to tune, the less port area you need. If you want to tune to 30hz or lower. 10-12in2 of port. 30-35hz 12-14in2, 35hz and up 14-16in2 of port.

In all honesty, so much of it just depends on the vehicle and the box. I can build 2 boxes that are built to the exact same specs and 1 may sound and peak completely different than the other.

This game we call car audio is all about testing. It can get really irritating at times, but the result in the end is worth the pain!

[kalilac619]

I cant explain why it is and dont really care to know the reasoning behind it, but in the builds I have done, the lower that you want to tune, the less port area you need. If you want to tune to 30hz or lower. 10-12in2 of port. 30-35hz 12-14in2, 35hz and up 14-16in2 of port.

In all honesty, so much of it just depends on the vehicle and the box. I can build 2 boxes that are built to the exact same specs and 1 may sound and peak completely different than the other.

This game we call car audio is all about testing. It can get really irritating at times, but the result in the end is worth the pain!

I found this to be true with my builds also

[LoudNLow931]

If this helps, the subs i'm running are AB XFL's 12's, lots of people have told me they aren't the best subs for lows but I beg to differ, my friends box tuned to 30hz with 14sqin of port per cube, running HDC3 12's on about 2k, digs deep down into the 20's which are the types of lows i really like, 36hz won't really get as low as I want it to

Why would you tune that low with HDC3's? that's just stupid.

I completely disagree with you loud n-low. I don't see much sense at all tuning to 20 hz. It's all application dependent, did a box for a buddy's CVX 12's. 4 cubes with 61 square inches of port tuned to 34. drops down to the 20's no problem.

OP, isn't the whole point of a removable port to be able to play with tuning and port area? why even ask, just try it and find out what you like.

I swear all the vets have gone to sleep..

Probably drops down to 20 with subsonic on 30hz lol, play it full tilt subsonic off for a whole song in the low 20s and see how that goes.

[kalilac619]

I am planning 5000wrms on 2 15's want to be able to do hair tricks. How important is port area? So would 14sqin per cube be better than 12sqin per cube tuned at 33hz

you want more port area dude. trust me. you'll move a lot more air that way. the less port you have the closer it gets to a leaky sealed box.

Yeah maybe like 1sq in per cu ft Lol hell look at Meades box 20 cubes with only 120 sq in of port tuned to 30hz that equals 6 sq in per cu ft and we can all agree it don't sound like no leaky sealed box just sayn....

[412 CVX]

I'm not saying it would sound like one. Output wouldn't be the same. Meade said he wanted more port himself. He's doing hairtricks because he's got a fuck ton of cone area and a shitload of power.