KeepItLow91 Posted April 10, 2011 Report Share Posted April 10, 2011 I made a post sometime in the past where someone on here gave me a link to download a program called Box Tuning Calculator and it is amazing. However, I do have a question which might prove how ignorant I am in car audio/math. I plan on making a T line box for two 12's, dimensions around 17" tall, 37" wide, and around 23" deep. I originally entered the port height at 15.5" (compensating for the .75 inch thickness of top and bottom of box, idk if you're supposed to calculate that in), width 5" and the depth around 19", all rough measurements so far. The thing I am confused on is the wider I make the port, the higher the frequency tuning goes, and the smaller the port width is, the lower it goes. I thought more port area means lower tuning? Plz educate me! Link to comment Share on other sites More sharing options...
hdorre Posted April 10, 2011 Report Share Posted April 10, 2011 No, more port LENGTH lowers tuning. On 5/8/2011 at 7:38 PM, Kranny said: On 5/8/2011 at 7:35 PM, 'Maxim' said: It hurts me inside when I read stuff like this and remember you're 15 LMFAO so true Mitsubishi 3000GT (Old Build) Headunit: Pioneer 80PRS Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s Electrical :Singer 260A Alt & JY Power Lithium 2005 Chevy Colorado Ext Cab Headunit: Pioneer 80PRS Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s Electrical: Singer "390" and JY Power My Official Feedback Thread Link to comment Share on other sites More sharing options...
KeepItLow91 Posted April 10, 2011 Author Report Share Posted April 10, 2011 No, more port LENGTH lowers tuning. So port length lowers tuning, width heightens tuning. So if I am stuck with around 19" of port length, I simply decrease port width lower the tuning to my prefered 31-32hz tuning? Link to comment Share on other sites More sharing options...
hdorre Posted April 10, 2011 Report Share Posted April 10, 2011 Not necessarily. A port that's too small may cause peakiness and port noise. On 5/8/2011 at 7:38 PM, Kranny said: On 5/8/2011 at 7:35 PM, 'Maxim' said: It hurts me inside when I read stuff like this and remember you're 15 LMFAO so true Mitsubishi 3000GT (Old Build) Headunit: Pioneer 80PRS Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s Electrical :Singer 260A Alt & JY Power Lithium 2005 Chevy Colorado Ext Cab Headunit: Pioneer 80PRS Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s Electrical: Singer "390" and JY Power My Official Feedback Thread Link to comment Share on other sites More sharing options...
Supercharged DCs Posted April 10, 2011 Report Share Posted April 10, 2011 No, more port LENGTH lowers tuning. So port length lowers tuning, width heightens tuning. So if I am stuck with around 19" of port length, I simply decrease port width lower the tuning to my prefered 31-32hz tuning? If you can only go 19" deep with the port, you can bend it and get the desired length for the tuning you want. The port will look like a L 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...
Torres Posted April 10, 2011 Report Share Posted April 10, 2011 a couple things to clarify: when adjusting port length with a fixed surface area, increasing the port length lowers tuning and shortening the port raises tuning. when adjusting port area with a fixed port length, more port area raises tuning while less port area lowers tuning my calculator (i'm assuming it's the one you're using, given the similar title in the first post) is made to design ported boxes. if you're trying to do a t-line, my calculator will not be able to help you. t-lines are basically considered one long port, while ported boxes have airspace. the math for a t-line however is very simple to understand Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.