bassface Posted May 29, 2012 Report Share Posted May 29, 2012 Does only the part of the port inside the box count towards port length?. I have heard 2 different things regarding this. I have heard some say only whats inside the box counts towards port length tuning. I have also heard from others that the length of the port inside the box doesn't matter only the overall length of the port itself. So can someone clear this up for me, thanks. Quote Link to comment Share on other sites More sharing options...
loudNlow87 Posted May 29, 2012 Report Share Posted May 29, 2012 No. The whole port counts. What's inside the box only accounts for the internal volume it takes up. Quote '11 Jeep Patriot New Build Head Unit: Pioneer AVH-P3200DVD Front: Massive CK69 Components Front Amp: Massive NX2 Rears: Infinity Kappa's Subs: 8 Sundown SA-8 v2's Sub Amp: AB 450.1 XS D3100 Come on 150! Link to comment Share on other sites More sharing options...
bassface Posted May 29, 2012 Author Report Share Posted May 29, 2012 Ah cool man, thats what i was hoping to hear, so why do some people say they can tune the box by moving the port in or out? Quote Link to comment Share on other sites More sharing options...
loudNlow87 Posted May 29, 2012 Report Share Posted May 29, 2012 The change in tuning frequency by simply sliding the port in or out would be very minimal. Sliding the port out would gain you internal box volume which would in turn lower your tuning. But using a different port of a different length could change greatly depending on the difference between the two. Quote '11 Jeep Patriot New Build Head Unit: Pioneer AVH-P3200DVD Front: Massive CK69 Components Front Amp: Massive NX2 Rears: Infinity Kappa's Subs: 8 Sundown SA-8 v2's Sub Amp: AB 450.1 XS D3100 Come on 150! Link to comment Share on other sites More sharing options...
varietyguy Posted May 29, 2012 Report Share Posted May 29, 2012 Because it is giving the box more airspace since you are removing the displacement of the port (Vise Versa as well) Quote 1992 Mazda 323 http://www.stevemead...323-wall-build/ Link to comment Share on other sites More sharing options...
varietyguy Posted May 29, 2012 Report Share Posted May 29, 2012 The change in tuning frequency by simply sliding the port in or out would be very minimal. Sliding the port out would gain you internal box volume which would in turn lower your tuning. But using a different port of a different length could change greatly depending on the difference between the two. Correct me if I'm wrong but If you are shortening the port it will raise the tuning frequency, a longer port will give you a lower tuning. Quote 1992 Mazda 323 http://www.stevemead...323-wall-build/ Link to comment Share on other sites More sharing options...
bassface Posted May 29, 2012 Author Report Share Posted May 29, 2012 The change in tuning frequency by simply sliding the port in or out would be very minimal. Sliding the port out would gain you internal box volume which would in turn lower your tuning. But using a different port of a different length could change greatly depending on the difference between the two. Correct me if I'm wrong but If you are shortening the port it will raise the tuning frequency, a longer port will give you a lower tuning. Yep thats right. Quote Link to comment Share on other sites More sharing options...
loudNlow87 Posted May 29, 2012 Report Share Posted May 29, 2012 The change in tuning frequency by simply sliding the port in or out would be very minimal. Sliding the port out would gain you internal box volume which would in turn lower your tuning. But using a different port of a different length could change greatly depending on the difference between the two. Correct me if I'm wrong but If you are shortening the port it will raise the tuning frequency, a longer port will give you a lower tuning. Yes. that is correct. But I believe (from what I gathered) he asked how tuning changes by moving the port in/out. Not actually making the port shorter. Quote '11 Jeep Patriot New Build Head Unit: Pioneer AVH-P3200DVD Front: Massive CK69 Components Front Amp: Massive NX2 Rears: Infinity Kappa's Subs: 8 Sundown SA-8 v2's Sub Amp: AB 450.1 XS D3100 Come on 150! Link to comment Share on other sites More sharing options...
bassface Posted May 29, 2012 Author Report Share Posted May 29, 2012 All of these replys make good sense, I can now feel confident about my port sticking 3 inches out of the 4th order. Quote Link to comment Share on other sites More sharing options...
varietyguy Posted May 29, 2012 Report Share Posted May 29, 2012 The change in tuning frequency by simply sliding the port in or out would be very minimal. Sliding the port out would gain you internal box volume which would in turn lower your tuning. But using a different port of a different length could change greatly depending on the difference between the two. Correct me if I'm wrong but If you are shortening the port it will raise the tuning frequency, a longer port will give you a lower tuning. Yes. that is correct. But I believe (from what I gathered) he asked how tuning changes by moving the port in/out. Not actually making the port shorter. I read though it too quick, you are right sir. Quote 1992 Mazda 323 http://www.stevemead...323-wall-build/ Link to comment Share on other sites More sharing options...
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