RickyFriery97 Posted October 26, 2011 Author Report Share Posted October 26, 2011 "Fs" of an 18 xl is 32, the f3 can be manipulated, right? yes the Fs is 31.86Hz, from the DC website. "Fb is the tuning freq. F3 is the point that the box is down 3db from its peak. F3 is where the sub will just see a hole in the box and start to lose control. Very bad to play down here. A good design can get you a f3 point well below the tuning freq(fb) A bad or poor design can actually have the f3 point above the fb. Crazy huh. I know. And yes i see it all the time. This is where using winisd or bbp6 is far better than just a volume calc. Live and learn" Quoted from Ray So im guessing theres some formula to figure of the F3 point of a box? Quote 2014 Chevy Silverado Crewcab 1994 Chevy Full Size blazer Link to comment Share on other sites More sharing options...
LoudBimmer Posted October 26, 2011 Report Share Posted October 26, 2011 One thing i noticed is that DC subs get hot and sticky a lot. Quote Link to comment Share on other sites More sharing options...
Supercharged DCs Posted October 26, 2011 Report Share Posted October 26, 2011 Download WinISD, enter the T/S specs for the XL18, and your enclosure size & tuning. It should graph the response, as well as an F3 point. Quote Bassless once again. Can't seem to keep a system for more than a few weeks Saving for a '06 Nissan 350z, look for build around June 2012. Link to comment Share on other sites More sharing options...
kingsuv Posted October 26, 2011 Report Share Posted October 26, 2011 Another thing to consider box aside is just because you have a product that can take X amount of power and another that puts out Y amount of power Doesn't always mean you can hammer on it ALL day. Anytime you have a product playing at these power levels you are going to create heat. And A lot of it. A little common sense needs to play out when you have a larger stereo. Just cause a car can do 140mph, doesn't mean you should do it for the next 500 miles Also, what may work in one persons system, may not in yours. There is so many variables to everyone's setup Quote Designing, building, and shipping boxes. Yahoo IM - kingsuv00If the listening level is too loud, please inform the driver, so he can promptly pull over, and let you out. not many cars can get me to pluggin my ears but this one.......damn. I mean the first minute is ok but that thing just really starts digging deeper and deeper in your earhole till you cant stand it no more. Seems like it does it with relative ease....16 12's on 8 amps.........gotta love it. Link to comment Share on other sites More sharing options...
OrionStang Posted October 26, 2011 Report Share Posted October 26, 2011 One thing i noticed is that DC subs get hot and sticky a lot. Thats 'cause we put double to triple rms power to them. I'll take hot and stinky over blown all day. Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
LoudBimmer Posted October 26, 2011 Report Share Posted October 26, 2011 One thing i noticed is that DC subs get hot and sticky a lot. Thats 'cause we put double to triple rms power to them. I'll take hot and stinky over blown all day. the problem is most of the time it's rated power But yes, i seen and heard DC subs on crazy stupid power without any problems Quote Link to comment Share on other sites More sharing options...
OrionStang Posted October 26, 2011 Report Share Posted October 26, 2011 I have no idea what the fuck im looking at on WinISD, i have beta version 0.44. Do I need a newer version? Sorry for the mini jack. Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
matt402 Posted October 26, 2011 Report Share Posted October 26, 2011 Download WinISD, enter the T/S specs for the XL18, and your enclosure size & tuning. It should graph the response, as well as an F3 point. BUT there is also cabin gain, rise, voltage drop, & other things that can change results. try the build & test, build & test, & build & test method. even tho building more boxes might be a pita its still cheaper than buying more equipment. Quote Link to comment Share on other sites More sharing options...
Supercharged DCs Posted October 26, 2011 Report Share Posted October 26, 2011 Download WinISD, enter the T/S specs for the XL18, and your enclosure size & tuning. It should graph the response, as well as an F3 point. BUT there is also cabin gain, rise, voltage drop, & other things that can change results. try the build & test, build & test, & build & test method. even tho building more boxes might be a pita its still cheaper than buying more equipment. Ooo wow I'm confused, is there a tried and true method to find out the F3 of your enclosure while it's in a vehicle? Quote Bassless once again. Can't seem to keep a system for more than a few weeks Saving for a '06 Nissan 350z, look for build around June 2012. Link to comment Share on other sites More sharing options...
RickyFriery97 Posted October 26, 2011 Author Report Share Posted October 26, 2011 Download WinISD, enter the T/S specs for the XL18, and your enclosure size & tuning. It should graph the response, as well as an F3 point. BUT there is also cabin gain, rise, voltage drop, & other things that can change results. try the build & test, build & test, & build & test method. even tho building more boxes might be a pita its still cheaper than buying more equipment. Ooo wow I'm confused, is there a tried and true method to find out the F3 of your enclosure while it's in a vehicle? im curious about this too? all i know is i can get this sub stinky quick with a low song. im throwin a lil more then RMS at it but not that much. Quote 2014 Chevy Silverado Crewcab 1994 Chevy Full Size blazer Link to comment Share on other sites More sharing options...
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