Dante_k_late Posted March 19, 2014 Report Share Posted March 19, 2014 Hello, this is my first post in this forum so i am obviously new here. I've been building slot port boxes for a little over a year now for myself with great success and decided i wanted to look into aero ports to save trunk room (a gross ~6.65cuft box isn't, say, ideal for a cavalier) lol. i have done tons of searching for my question but cannot seem to find it anywhere. my sub is a 15" PA Mofo-152x and i was planning on making a 4cuft internal volume box with two 4"x9.8" flared aero ports to get a 38hz tune but am unsure on where to put the ports themselves. what my question is, is can i put the sub directly in the middle with one aero on either side of the sub? or do the ports need to be on one side and the sub on the other more similar to a slot port? or does it really even matter? id like to do the first because of looks and because of the equilibrium of the box but if its not a good thing to do then the second will be fine! Thank you in advance for any replies! -Dante' Link to comment Share on other sites More sharing options...
Joe X Posted March 19, 2014 Report Share Posted March 19, 2014 The problem with ports is that you need to have proper clearance in both ends. The inner end of a port is better placed moderately far from the sub to avoid them to interact with each other. Link to comment Share on other sites More sharing options...
Dante_k_late Posted March 19, 2014 Author Report Share Posted March 19, 2014 i just realized that i didn't put the box specs up, the box will be 33Wx17.25D(with double baffled front)x16H and made with 3/4 mdf. the ports would be centered top to bottom and around 3" away from the side walls. so there'd be around 4" or so between the outside of the surround and the ports. seem like it'd be a good set up? Link to comment Share on other sites More sharing options...
Dante_k_late Posted March 20, 2014 Author Report Share Posted March 20, 2014 i just found a guy on you tube who has a box like what I'm wanting the two ports on either side of the sub but his ports are much closer to the walls and the sub. i think I'm just gonna go ahead and build it! thanks though! Link to comment Share on other sites More sharing options...
Joe X Posted March 20, 2014 Report Share Posted March 20, 2014 Something like the following would work, if that's what you are wanting to do go ahead: Link to comment Share on other sites More sharing options...
Dante_k_late Posted March 20, 2014 Author Report Share Posted March 20, 2014 that is EXACTLY what i want! thanks so much!! Link to comment Share on other sites More sharing options...
Dante_k_late Posted March 20, 2014 Author Report Share Posted March 20, 2014 one more quick question. instead of buying aero ports like i originally planned I'm going to make them because i have a bunch of 4" pvc laying around. now correct me if I'm wrong but it doesn't really matter how much you flare the ends as long as the inside thats not flared is the correct length right? on the psp-inc.com website they say i need a 2 4"x8.9" non flared ports or 2 of their 4" flared ports x9.8" to get to my goal of 38hz tuning. if i were to make them myself and cut the pvc about an inch longer than 8.9" and then mark the 8.9 on both sides with a half inch left over i can flare them out to the lines and have to correct tuning, right? what i was actually thinking of doing was cutting it an inch and a half longer and having half an inch of flare on the inside then flaring it with one inch on the outside then actually making half of the outside flare flat to be able to mount it to the box with screws. is my theory correct or does it need some adjusting? Link to comment Share on other sites More sharing options...
Joe X Posted March 20, 2014 Report Share Posted March 20, 2014 I guess that the flared length that PSP gives is for their particular flares, generally speaking the effective length of a flared port is calculated like this: The effective length as shown in the figure should be the 8.9". Link to comment Share on other sites More sharing options...
Dante_k_late Posted March 20, 2014 Author Report Share Posted March 20, 2014 okay cool. thanks man! you've been a bunch of help! Link to comment Share on other sites More sharing options...
Aj11 Posted March 21, 2014 Report Share Posted March 21, 2014 this helped allot for me to! i plan on making my own flared and was wondering if you could flare them to much jvc deck stinger 1800 front hc 2000 kinetic rear 2 runs of 1/0g big 3/4 ct 60.4 2 ct 1400.1 ct EXO 15 d1 lots of deadner type r comps front stage 6 kicker tweets rear stage lots of great stuff coming soon ho alt more bats ct comps for front stage more deadner sweet amp rack lots of L.E.D lights new deck (thinking 80 prs, or flip out) Link to comment Share on other sites More sharing options...
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