liftedranger08 Posted August 14, 2009 Report Share Posted August 14, 2009 Well im getting 4 q power 15s and 2 sundown saz 2000s for my next build. This will be a wall in my ford ranger. I have a box design. Tell me if it sounds good and if it dont, give me some ideas. I know yall are gona say i need a bigger box, but these 15s only need 2 cubes per sub. I called q power and asked them. I used REs calculator for this and my outside dimesnions are: 44"W x 35"H x 14.5"D with a port that is 3.75"W x 33.5"H x 26"L. This comes out to be 8.7 cubes after port displacement. After sub displacement and bracing, the box will be around 8 cubes with 125 sq inches of port tuned to around 34-35Hz. Does this sound like a good box for 4000 watts? The subs will be on the passenger side and the port on the drivers side. I know how to use google sketchup, i just dont know how to save it so i can get a link and post it here. Quote 2000 White Ford Ranger 5" RCD lift 33x12.50 Mickey Thompson MTZs on 16x8 Mickey Thompson Classic 2s Euro Altezza tail lights 5% window tint Clarion Indash 4 Q Power 15s 1 Sundown 2000 1 DC power 300 amp alt(on the way)-soon to be 2 2 powermaster d925s batteries Second Skin Deadener Highs/mids amp-Crossfire 404 Door speakers-2 5x7 mb quarts and 1 5 1/4" black max up front, stock 5x7s in the rear Soon to Come: Lots of SA-8s 2 Sundown saz 3500s(possible 4500s) 5-7 d3100 batteries custom clamshell BNC 8s for mids undecided tweeters Link to comment Share on other sites More sharing options...
Torres Posted August 14, 2009 Report Share Posted August 14, 2009 box sounds good to me. there's adequate port area. but...keep in mind the RE calc isnt 100% accurate. i used mine and i get 8.19 cubes after all displacement and tuned to 33.37 hz. if you wanted to tune it just a tad higher, you shorten the port to 21" and it'd tune it to 34.95 hz to be in you're frequency range. it'd give you about 8.62 cubes after displacement. that puts you almost right where you are with the one you have now except i counted in sub displacement. and to take a pic, press the 'PrtScn' button and paste it into paint. crop it how you want, save it, and upload it to photobucket Quote Link to comment Share on other sites More sharing options...
liftedranger08 Posted August 14, 2009 Author Report Share Posted August 14, 2009 Ol, ill post a pic up tonite with it colored and everything. Well im sure your program is better and i want it around 33Hz so ill use the same measurements i had for the re calc. Is 125 sq inches enough port for 4000 watts and 8 cubes or do i need more or less? Quote 2000 White Ford Ranger 5" RCD lift 33x12.50 Mickey Thompson MTZs on 16x8 Mickey Thompson Classic 2s Euro Altezza tail lights 5% window tint Clarion Indash 4 Q Power 15s 1 Sundown 2000 1 DC power 300 amp alt(on the way)-soon to be 2 2 powermaster d925s batteries Second Skin Deadener Highs/mids amp-Crossfire 404 Door speakers-2 5x7 mb quarts and 1 5 1/4" black max up front, stock 5x7s in the rear Soon to Come: Lots of SA-8s 2 Sundown saz 3500s(possible 4500s) 5-7 d3100 batteries custom clamshell BNC 8s for mids undecided tweeters Link to comment Share on other sites More sharing options...
Torres Posted August 15, 2009 Report Share Posted August 15, 2009 port area is based on net volume, not power. so yes...you'll be very well off with that port area. Quote Link to comment Share on other sites More sharing options...
liftedranger08 Posted August 16, 2009 Author Report Share Posted August 16, 2009 Heres a pic of the box im doing. The square box in the middle is going to be a cut out and have q power in plexiglass with a led behind it. Its not the best drawing but im still learning on sketch up. Quote 2000 White Ford Ranger 5" RCD lift 33x12.50 Mickey Thompson MTZs on 16x8 Mickey Thompson Classic 2s Euro Altezza tail lights 5% window tint Clarion Indash 4 Q Power 15s 1 Sundown 2000 1 DC power 300 amp alt(on the way)-soon to be 2 2 powermaster d925s batteries Second Skin Deadener Highs/mids amp-Crossfire 404 Door speakers-2 5x7 mb quarts and 1 5 1/4" black max up front, stock 5x7s in the rear Soon to Come: Lots of SA-8s 2 Sundown saz 3500s(possible 4500s) 5-7 d3100 batteries custom clamshell BNC 8s for mids undecided tweeters Link to comment Share on other sites More sharing options...
liftedranger08 Posted August 17, 2009 Author Report Share Posted August 17, 2009 Since im running 2 amps, should i build 2 boxes and put 2 15s and 1 amp for each box or build the one i drew up? Quote 2000 White Ford Ranger 5" RCD lift 33x12.50 Mickey Thompson MTZs on 16x8 Mickey Thompson Classic 2s Euro Altezza tail lights 5% window tint Clarion Indash 4 Q Power 15s 1 Sundown 2000 1 DC power 300 amp alt(on the way)-soon to be 2 2 powermaster d925s batteries Second Skin Deadener Highs/mids amp-Crossfire 404 Door speakers-2 5x7 mb quarts and 1 5 1/4" black max up front, stock 5x7s in the rear Soon to Come: Lots of SA-8s 2 Sundown saz 3500s(possible 4500s) 5-7 d3100 batteries custom clamshell BNC 8s for mids undecided tweeters Link to comment Share on other sites More sharing options...
LoudBimmer Posted August 17, 2009 Report Share Posted August 17, 2009 1 box gonna look better Quote Link to comment Share on other sites More sharing options...
liftedranger08 Posted August 17, 2009 Author Report Share Posted August 17, 2009 Ok cool. And 1 box will be easier for me to build also. My subs should be here friday so ill start a build log hopefully this weekend. Quote 2000 White Ford Ranger 5" RCD lift 33x12.50 Mickey Thompson MTZs on 16x8 Mickey Thompson Classic 2s Euro Altezza tail lights 5% window tint Clarion Indash 4 Q Power 15s 1 Sundown 2000 1 DC power 300 amp alt(on the way)-soon to be 2 2 powermaster d925s batteries Second Skin Deadener Highs/mids amp-Crossfire 404 Door speakers-2 5x7 mb quarts and 1 5 1/4" black max up front, stock 5x7s in the rear Soon to Come: Lots of SA-8s 2 Sundown saz 3500s(possible 4500s) 5-7 d3100 batteries custom clamshell BNC 8s for mids undecided tweeters Link to comment Share on other sites More sharing options...
Torres Posted August 17, 2009 Report Share Posted August 17, 2009 yeah one box will be fine. i meant to say before and forgot, you *may* get some port noise with that port. the port ratio should be 1:7 (or is it 1:8? i forget exactly lol). either way, you're port area is about 1:10. if you can, i'd make it a lil wider, and not as tall on the box, but maintain the same port area. and either way you build it, make sure there's enough distance from the baffle to the port so that the subs wont hit the port when it bends when they're mounted Quote Link to comment Share on other sites More sharing options...
liftedranger08 Posted August 17, 2009 Author Report Share Posted August 17, 2009 What about if i do 4.5"W x 27.75"H? Its about 124.8 sq inches of port. Quote 2000 White Ford Ranger 5" RCD lift 33x12.50 Mickey Thompson MTZs on 16x8 Mickey Thompson Classic 2s Euro Altezza tail lights 5% window tint Clarion Indash 4 Q Power 15s 1 Sundown 2000 1 DC power 300 amp alt(on the way)-soon to be 2 2 powermaster d925s batteries Second Skin Deadener Highs/mids amp-Crossfire 404 Door speakers-2 5x7 mb quarts and 1 5 1/4" black max up front, stock 5x7s in the rear Soon to Come: Lots of SA-8s 2 Sundown saz 3500s(possible 4500s) 5-7 d3100 batteries custom clamshell BNC 8s for mids undecided tweeters Link to comment Share on other sites More sharing options...
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