Jessica Posted September 16, 2012 Report Posted September 16, 2012 Some of you may know this and some may not. But the PSP Calculator on psp-inc.com does not factor port displacement into it calculations. So, when you type a number into the "Volume of box in cubic feet" you will have to add your port displacement when you design the enclosure. I emailed them and Steve from PSP-inc gave me the answer just so you know I am not just making this up. It's just something that isn't stated anywhere on the calculator. Maybe it was obvious to most, but when using tools like Torres that does the math for you, I had to be sure. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13
shogen Posted September 16, 2012 Report Posted September 16, 2012 Lol. You ain't the only one. I started away from their calc since I couldn't get it to match Torres at all. Pioneer Premier P880PRS ll Front Stage: US Acoustics 4060 - Random speakers currently ll Sub Stage: Crescendo BC3500D - 15" Xcon sealed @ 3.28 cubes ll Electrical: - Kinetik HC1800(front) NEW***DieHard P-2(rear) beaker- I know this sounds like a lot of anime bullshit, but it is true.
Joe X Posted September 16, 2012 Report Posted September 16, 2012 Some of you may know this and some may not. But the PSP Calculator on psp-inc.com does not factor port displacement into it calculations. So, when you type a number into the "Volume of box in cubic feet" you will have to add your port displacement when you design the enclosure. I emailed them and Steve from PSP-inc gave me the answer just so you know I am not just making this up. It's just something that isn't stated anywhere on the calculator. Maybe it was obvious to most, but when using tools like Torres that does the math for you, I had to be sure. For 2 or more ports Torres still will provide the wrong result since it just multiplies the area for multiple port calculations, the document in which is based on specifically states not to do that: http://www.jlaudio.com/header/Support/Tutorials/Enclosure+Ports/Tutorial%3A+Enclosure+Ports/656168
Torres Posted September 16, 2012 Report Posted September 16, 2012 ^^that is something new i've never seen before. i'll have to look into that EDIT: just my skeptical side....but they're basing the difference off of the friction in multiple ports compared to one larger port. while this makes sense, how accurate is their testing i wonder.....
Jessica Posted September 16, 2012 Author Report Posted September 16, 2012 I only use their calc for aero ports. Just because the math to actually figure up length is a pain. I should just make a spreadsheet that does it for me but i am too lazy. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13
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