Andrew Storlie Posted April 19, 2015 Report Share Posted April 19, 2015 im building an SQL set up with a single 12 for my daily. im stuck between 2 subs. dayton Ultimax http://www.parts-express.com/dayton-audio-um12-22-12-ultimax-dvc-subwoofer-2-ohms-per-coil--295-512 OR Alpine type S or R 12" R: http://www.alpine-usa.com/product/view/swr-12d4/ S: http://www.alpine-usa.com/product/view/sws-12d2/ i will only be running 500rms for the sub as i plan to get the alpine PDX-V9 amp http://www.alpine-usa.com/product/view/pdx-v9/ ill be running Alpine SPR-60C in all 4 doors http://www.alpine-usa.com/product/view/spr-60c/ ive owned and heard the new type r's before and they are great in a good box but when entering some info into winisd pro it shows the dayton will have a much smoother gain and much better low end compared to the alpine. but reqires a 3.5ft^3 box to do so... Dayton is orange 3.5ft^3 dual 3" aeros 15.5" long each tuned at 24.9Hz Alpine Type R is Yellow 2.0ft^3 dual 3" aeros 16.5" long each tuned at 32Hz Link to comment Share on other sites More sharing options...
Triticum Agricolam Posted April 19, 2015 Report Share Posted April 19, 2015 Two 3" ports isn't going to be enough port area for either of those subs. Cabin gain is going to give you a big low end boost so chances are you are going to want to shrink down your box volumes a bit to tame that. I'll post a picture later that shows how you can roughly approximate cabin gain in WinISD. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds: Link to comment Share on other sites More sharing options...
Joe X Posted April 20, 2015 Report Share Posted April 20, 2015 Since you have the model entered, change to the vent airspeed plot, you don't want to be much above 25 m/s at rated power. Cabin gain usually make almost worthless frequency response plots predicted by software, tale a look at predicted vs actual frequency response inside some vehicle: Link to comment Share on other sites More sharing options...
Andrew Storlie Posted April 20, 2015 Author Report Share Posted April 20, 2015 with the current design i have for the dayton, winisd is showing a max of 21m/s at 20hz roughtly Link to comment Share on other sites More sharing options...
Broke_Audio_Addict Posted April 20, 2015 Report Share Posted April 20, 2015 Vs. Threads are frowned upon here. That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals. Link to comment Share on other sites More sharing options...
Triticum Agricolam Posted April 20, 2015 Report Share Posted April 20, 2015 Here is a filter you can add to WinISD to roughly approximate cabin gain: Like I said, its only a rough approximation, and just how much usefullness it has is up for debate, but I consider it to be better than nothing. The f0 number can be changed based on the size of your vehicle. 60 Hz is usally pretty good for your average size SUV or sedan. After looking at the frequency responce you are going to get with that sub, I'd probably be inclined to run it in about a 3 cubic foot sealed box with a good amount of stuffing. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds: Link to comment Share on other sites More sharing options...
n8ball2013 Posted April 20, 2015 Report Share Posted April 20, 2015 No vs threads THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
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