dsw422 Posted June 16, 2015 Report Share Posted June 16, 2015 hey all,so ill be building a box for a buddy in his 95 crown vic. he has 2 Lanzar optridrive 1532D. he will also be using a lanzar optidrive amp(i believe the 3600).so heres how he want the box. he wants to port thru the rear deck. this means the port will be outside of the box. ive got all my dimensions.. so here they are..width-42"depth-23height-27.5port extensionwidth-28"depth- 15"height- 10"these are all the max dimensions. can anyone help help me decide on a ratio, tuning frequency, and whatnot.. thanks 2014 Ford Focus SE Sedan Factory Sony 10 Speaker Sound System 1994 Ford Bronco Dual head unit (i kno) Sony door speakers Kenwood Rear Speakers Custom Center console in the works. will house an NVX NSW10" https://m.facebook.com/WinnsCustomCarAudio/ Link to comment Share on other sites More sharing options...
Kyblack76 Posted June 16, 2015 Report Share Posted June 16, 2015 your building a 4th order band pass for someone, and asking for help ? SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
dsw422 Posted June 16, 2015 Author Report Share Posted June 16, 2015 yes.. lol.. i understand the ratios and how to build. but these speakers are cheap and really shoulda just asked if they r even worth putting in a 4th.. i havnt run a 4th in winisd yet to determine how they will react either.. my computer is messed up at the moment.. 2014 Ford Focus SE Sedan Factory Sony 10 Speaker Sound System 1994 Ford Bronco Dual head unit (i kno) Sony door speakers Kenwood Rear Speakers Custom Center console in the works. will house an NVX NSW10" https://m.facebook.com/WinnsCustomCarAudio/ Link to comment Share on other sites More sharing options...
Guest Posted June 16, 2015 Report Share Posted June 16, 2015 yes.. lol.. i understand the ratios and how to build. but these speakers are cheap and really shoulda just asked if they r even worth putting in a 4th.. I just heard a pair of lanzar optidrive 8's in a 4th recently....very loud and very clear for two cheap subs! I was surprised! It is all in the box! I don't have experience building a 4th order but it is certainly worth trying if you can do it right! Link to comment Share on other sites More sharing options...
dsw422 Posted June 16, 2015 Author Report Share Posted June 16, 2015 i should also clarify y im asking to do a 4th.. my buddy really wants the port thru the deck, so i figured that a 4th would be best.. itll throw all the sound into the car with minimal bass going to the trunk.. if a 4th doesnt sound like a good idea then ill just build a regular ported box but port thru the deck.. 2014 Ford Focus SE Sedan Factory Sony 10 Speaker Sound System 1994 Ford Bronco Dual head unit (i kno) Sony door speakers Kenwood Rear Speakers Custom Center console in the works. will house an NVX NSW10" https://m.facebook.com/WinnsCustomCarAudio/ Link to comment Share on other sites More sharing options...
dsw422 Posted June 16, 2015 Author Report Share Posted June 16, 2015 ok.. so my computer is acting ok at the moment, so I tried to see what win isd could come up with.. I designed the ported to manufacturer spec.. the 4th order I drew up based on the frequency response.. what do yall think?? 2014 Ford Focus SE Sedan Factory Sony 10 Speaker Sound System 1994 Ford Bronco Dual head unit (i kno) Sony door speakers Kenwood Rear Speakers Custom Center console in the works. will house an NVX NSW10" https://m.facebook.com/WinnsCustomCarAudio/ Link to comment Share on other sites More sharing options...
CleanSierra Posted June 16, 2015 Report Share Posted June 16, 2015 Looks like a peaky ass bandpass, like many are with a good bump around tuning. Did you do anything with port area? Did WinISD just suggest port area to be something dumb like 5X5? I've seen it do that. You need to tweak port area and it might flatten that response a bit. Im not the one you want to try to troll. Just a fyi for you. Link to comment Share on other sites More sharing options...
dsw422 Posted June 16, 2015 Author Report Share Posted June 16, 2015 I have adjusted port area to what I wanted. 130 square inches. but the plot doesn't change one bit.. is it supposed to.. quick question. does WinISD account for gross or net volume?? 2014 Ford Focus SE Sedan Factory Sony 10 Speaker Sound System 1994 Ford Bronco Dual head unit (i kno) Sony door speakers Kenwood Rear Speakers Custom Center console in the works. will house an NVX NSW10" https://m.facebook.com/WinnsCustomCarAudio/ Link to comment Share on other sites More sharing options...
Quintine Posted June 16, 2015 Report Share Posted June 16, 2015 I have a memory of testing between bassbox6 and winisd and working out it is NET volume, but I would need to check and confirm to be 100% sure. If you leave it till the last minute, it will only take a minute. Build Log - 4x12's Trunk Firing 6th Link to comment Share on other sites More sharing options...
Joe X Posted June 16, 2015 Report Share Posted June 16, 2015 Net volume and the effects of choking the port don't get modeled with that software. Link to comment Share on other sites More sharing options...
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