Sammitch0 Posted April 10, 2011 Report Share Posted April 10, 2011 I just managed to get my friend two new Kicker CVR 12's @ $50 and a Memphis 250.1 (does about 400 rated @ 2ohm) so these things will be seeing about HALF power, I'm not looking for anything low anywhere between 35-40hz is fine. Problem is the truck is an OLD Chevrolet and the dimensions are small: 48w x 15h x 9 top depth x 12 bottom depth (that'll put it behind his seat PERFECT, ONLY way to do it :-/) I tried doing a box in the calculator to no avail I need help BADLY. It CAN be sealed that's not a problem but if ported is doable that'd be preferable. He ran a 10" XPLOD off some random 2 channel sealed and hit decent, I figured hed be happy eigther way since this will be a lot louder. I just need to be able to fit them behind his small ass seat. I could use Aero flares as well if needed and point them up towards the roof or to the side. Quote Grand Cherokee Team Backwoods Bumpers DC 15" Level 3's /w 4 Coils Pioneer deh4200ub Pioneer 3-ways Pioneer Tweeters Pioneer GM-D9500F Audiopipe 1500.1D @ 14.4v Clarion Equalizer Knuconeptz Kollosus 0ga Knuconpetz Kollosus 4ga Coming Soon: 270xp / xs1200 Link to comment Share on other sites More sharing options...
Sanitarium Posted April 10, 2011 Report Share Posted April 10, 2011 (edited) Something like that would work fine. full measurements you gave, do the port 3.5" tall, 24 long for a tuning of roughly 36 hz. Edited April 10, 2011 by Sanitarium Quote Link to comment Share on other sites More sharing options...
Sammitch0 Posted April 10, 2011 Author Report Share Posted April 10, 2011 whats the width? I'm im assuming thats port to the left side of the box? Do you think the depth of the box will be enough for these woofers? I know my 18" is 9" deep im assuming these 12's are probably like 7-8" So i'm hoping they'll fit. Quote Grand Cherokee Team Backwoods Bumpers DC 15" Level 3's /w 4 Coils Pioneer deh4200ub Pioneer 3-ways Pioneer Tweeters Pioneer GM-D9500F Audiopipe 1500.1D @ 14.4v Clarion Equalizer Knuconeptz Kollosus 0ga Knuconpetz Kollosus 4ga Coming Soon: 270xp / xs1200 Link to comment Share on other sites More sharing options...
Sammitch0 Posted April 10, 2011 Author Report Share Posted April 10, 2011 (edited) come on man thats a perfect looking box but I need to know port width lol cause im not getting no 36hz more like 30hz cause the box isnt deep enough for a 9" port to get 36hz Edited April 10, 2011 by Sammitch0 Quote Grand Cherokee Team Backwoods Bumpers DC 15" Level 3's /w 4 Coils Pioneer deh4200ub Pioneer 3-ways Pioneer Tweeters Pioneer GM-D9500F Audiopipe 1500.1D @ 14.4v Clarion Equalizer Knuconeptz Kollosus 0ga Knuconpetz Kollosus 4ga Coming Soon: 270xp / xs1200 Link to comment Share on other sites More sharing options...
Sammitch0 Posted April 10, 2011 Author Report Share Posted April 10, 2011 bump Quote Grand Cherokee Team Backwoods Bumpers DC 15" Level 3's /w 4 Coils Pioneer deh4200ub Pioneer 3-ways Pioneer Tweeters Pioneer GM-D9500F Audiopipe 1500.1D @ 14.4v Clarion Equalizer Knuconeptz Kollosus 0ga Knuconpetz Kollosus 4ga Coming Soon: 270xp / xs1200 Link to comment Share on other sites More sharing options...
TheyDontWantMusic Posted April 10, 2011 Report Share Posted April 10, 2011 (edited) Assuming external dimensions, I work it out to be 3.25cuft before displacement, using 0.75inch MDF I'd do two 4inch ports, each 12inches long, for about 40Hz tuning. edit: or a single 6inch port. the proposed design above by "Sanitarim" appears to have a lot of port area? 3.5inches high, and the entire depth of the box (10.5inches at the bottom and around 10inches at the top?) the port would displace a whole heap of volume, and being 24inches long would probably result in the box being 2.5cuft tuned to 50Hz or so. Edited April 11, 2011 by TheyDontWantMusic Quote Link to comment Share on other sites More sharing options...
Sanitarium Posted April 10, 2011 Report Share Posted April 10, 2011 (edited) i said use full dimensions you gave, which would give the port a width of 10.5 at it's very bottom and just a hair under 10 at it's top. averaged at 10 wide.. i have no idea how you came up with 30 hz. Edit: ps that was a drawing i did for 2 10, i just used it for reference along with your measurements. Edited April 10, 2011 by Sanitarium Quote Link to comment Share on other sites More sharing options...
TheyDontWantMusic Posted April 11, 2011 Report Share Posted April 11, 2011 (edited) i said use full dimensions you gave, which would give the port a width of 10.5 at it's very bottom and just a hair under 10 at it's top. averaged at 10 wide.. i have no idea how you came up with 30 hz. Edit: ps that was a drawing i did for 2 10, i just used it for reference along with your measurements. I don't know how you came up with 36Hz the box is too small for that much port area. edit: I retract my previous statement, it will in fact be tuned to around 36Hz, I have no idea how I came up with 50Hz, sorry but, I would still be inclined to use a single 6inch round port so as not to displace as much box volume, and also tune it higher as the box is fairly small. Edited April 12, 2011 by TheyDontWantMusic Quote Link to comment Share on other sites More sharing options...
TheyDontWantMusic Posted April 12, 2011 Report Share Posted April 12, 2011 this is your maximum dimensions, with a 6inch diameter port, 12inches long. it would also be a good idea to put a dowel brace from the front to the back of the box. Quote Link to comment Share on other sites More sharing options...
TheyDontWantMusic Posted April 13, 2011 Report Share Posted April 13, 2011 or do this, so the woofers are loaded evenly to the port Quote Link to comment Share on other sites More sharing options...
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