Ram1989custom Posted July 21, 2011 Report Share Posted July 21, 2011 Ok, my subwoofer box is peaking notes at 62 Hz, and that is way too high. The Box is chambered, and each chamber is 1.75 cubes. I need a way to tune it down a bit without making a new box for now. It is slot ported. Quote 1989 Dodge D150, 318 LA; Holley Fuel InjectionBuild Log:http://www.stevemeadedesigns.com/board/topic/72838-dc-dodge-d150-blowthrough-thread-updated-pics-fixed-2-level-4-15s-wlvl-5-coils/Truck Add-ons: 20" rims2/4 drop15% tintBucket seatsK&N air filterSmog Pump deleteStereoWORK IN PROGRESS2 DC Level 4 15s with Level 5 Coils1 Audiopipe AP15001D (Soon to be a Crescendo BC3500)JBL 650W amp (unsure of model)4 6x9 Rockford Prime 3 ways2 Soundstream TWS.4 Dome tweetersKnuKonceptz 1/0 Power Wire *3 Kinetik 2400s and a Mechman 270A alt in the future* Link to comment Share on other sites More sharing options...
Sanitarium Posted July 21, 2011 Report Share Posted July 21, 2011 Ok, my subwoofer box is peaking notes at 62 Hz, and that is way too high. The Box is chambered, and each chamber is 1.75 cubes. I need a way to tune it down a bit without making a new box for now. It is slot ported. i got an idea. Make a new box, too much trouble involved in downtuning a box already made. This time, start off with a good plan to begin with. Quote Link to comment Share on other sites More sharing options...
Ram1989custom Posted July 21, 2011 Author Report Share Posted July 21, 2011 Ive been trying to figure out a way to build this new one better with the same idea, but I don't know how I am gonna do it. Here is a picture of the inside now. If I built a new box, could I add a vertical piece running next to the chamber wall to extend the port more? Quote 1989 Dodge D150, 318 LA; Holley Fuel InjectionBuild Log:http://www.stevemeadedesigns.com/board/topic/72838-dc-dodge-d150-blowthrough-thread-updated-pics-fixed-2-level-4-15s-wlvl-5-coils/Truck Add-ons: 20" rims2/4 drop15% tintBucket seatsK&N air filterSmog Pump deleteStereoWORK IN PROGRESS2 DC Level 4 15s with Level 5 Coils1 Audiopipe AP15001D (Soon to be a Crescendo BC3500)JBL 650W amp (unsure of model)4 6x9 Rockford Prime 3 ways2 Soundstream TWS.4 Dome tweetersKnuKonceptz 1/0 Power Wire *3 Kinetik 2400s and a Mechman 270A alt in the future* Link to comment Share on other sites More sharing options...
Supercharged DCs Posted July 21, 2011 Report Share Posted July 21, 2011 If your looking to modify your current box, inverting the subwoofers will drop the tuning a tad. You can also build an extension around your port, like a rectangle frame around the port. Build it several inches thick, which should drop the tuning as well... Just some ideas 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...
6berry Posted July 21, 2011 Report Share Posted July 21, 2011 supercharged dc's ideas would work. another thing you can do is put a piece of mdf inside the port to decrease the port area which would lower tuning as well Quote 1999 Audi A4 1.8T::: 4 - DC Level 3 10's in a 4th order Rockford P6002 on Subs for now (3-3.5k coming eventually) MB Quart ONX4.60 for Mids and Highs Boston S50 Components in Front Boston S65 Coaxials in Rear 40 Sq Ft of Second Skin Damplifier Build Thread UBL 1948 Plymouth Link to comment Share on other sites More sharing options...
Ram1989custom Posted July 21, 2011 Author Report Share Posted July 21, 2011 Inverting them isn't gonna work because these are behind the seats of my truck, and I realized I am gonna have to start from scratch because I already glassed the inside and its gonna be impossible to get the top of my box off haha. Quote 1989 Dodge D150, 318 LA; Holley Fuel InjectionBuild Log:http://www.stevemeadedesigns.com/board/topic/72838-dc-dodge-d150-blowthrough-thread-updated-pics-fixed-2-level-4-15s-wlvl-5-coils/Truck Add-ons: 20" rims2/4 drop15% tintBucket seatsK&N air filterSmog Pump deleteStereoWORK IN PROGRESS2 DC Level 4 15s with Level 5 Coils1 Audiopipe AP15001D (Soon to be a Crescendo BC3500)JBL 650W amp (unsure of model)4 6x9 Rockford Prime 3 ways2 Soundstream TWS.4 Dome tweetersKnuKonceptz 1/0 Power Wire *3 Kinetik 2400s and a Mechman 270A alt in the future* Link to comment Share on other sites More sharing options...
SnowDrifter Posted July 21, 2011 Report Share Posted July 21, 2011 Inverting them isn't gonna work because these are behind the seats of my truck, and I realized I am gonna have to start from scratch because I already glassed the inside and its gonna be impossible to get the top of my box off haha. I don't mean this in a mean way.. It's annoying to have to rebuild a box but: Download winISD pro from here www.linearteam.dk/default.aspx?pageid=winisdpro The follow this guide to use it since it is alpha(before beta) software and still finnickey at times. You have to close out of it with the task manager http://www.hometheatershack.com/forums/diy-subwoofers-general-discussion/6330-winisd-pro-tutorial-download-detailed-guide-how-use-winisd-pro.html Quote ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
Ram1989custom Posted July 21, 2011 Author Report Share Posted July 21, 2011 Ok, I think I found out what I am going to do. Quote 1989 Dodge D150, 318 LA; Holley Fuel InjectionBuild Log:http://www.stevemeadedesigns.com/board/topic/72838-dc-dodge-d150-blowthrough-thread-updated-pics-fixed-2-level-4-15s-wlvl-5-coils/Truck Add-ons: 20" rims2/4 drop15% tintBucket seatsK&N air filterSmog Pump deleteStereoWORK IN PROGRESS2 DC Level 4 15s with Level 5 Coils1 Audiopipe AP15001D (Soon to be a Crescendo BC3500)JBL 650W amp (unsure of model)4 6x9 Rockford Prime 3 ways2 Soundstream TWS.4 Dome tweetersKnuKonceptz 1/0 Power Wire *3 Kinetik 2400s and a Mechman 270A alt in the future* Link to comment Share on other sites More sharing options...
RAM_Designs Posted July 21, 2011 Report Share Posted July 21, 2011 Honestly, I'd just build a new box instead of altering the current one. For one, it'll be a total pain in the ass to do so. And if you're trying to lower the tuning, you're either going to sacrifice box volume or port area...or both. Quote Ryan Miskin - owner of RAM Designs I have my PM's turned off, please email at <script data-cfhash='f9e31' type="text/javascript"> /* */</script> 2200+ designs since March 2011... Link to comment Share on other sites More sharing options...
Ray Posted July 21, 2011 Report Share Posted July 21, 2011 Shrink the port area Quote 2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz Link to comment Share on other sites More sharing options...
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