a_steezy Posted November 3, 2009 Report Share Posted November 3, 2009 (edited) i built a box using the re box calculator tuned to 37.6hz. i just re-checked my work here http://www.mediafire.com/?2ypo0iymlum and it's saying in the end it's 44.7hz both have the same dimensions and they both say the same 'box volume' but tuning is off... opinions? how do you take screen shots so i can post up unless you guys wanna punch it in yourself and play with it 40" wide 14" tall 16" deep port is 3.5"x12.5" and 11" long Edited November 3, 2009 by a_steezy Quote '98 Dodge Durango 5.9L 5% front windows, 2.5% on all backs Alpine CDA-9883 Kicker ZX350.4 Kicker KS650's in all doors Kicker 1/0 hyperflex Link to comment Share on other sites More sharing options...
Decaf Posted November 3, 2009 Report Share Posted November 3, 2009 sub displacement and end correction factor are usually what changes tuning and if u use a square vs slot port since the amount of extra wood displ is different with each give me a sec ill see what i get what sub(s) Quote Link to comment Share on other sites More sharing options...
Torres Posted November 3, 2009 Report Share Posted November 3, 2009 (edited) the RE calc is known to not be very accurate. putting those dimensions in my calculator, i came up with around 43 hz myself. and to take screen shots, press the PrtScn (print screen) button on the top right of your keyboard. then open paint, paste it there, resize or crop if you need/want, then save it and upload it to photobucket or wherever you put your pics EDIT: ^what he said, tho i think 7 hz is a BIG difference between the two. i did see someone tho put their total length in the port in the 'length 2' box which told the RE calc that the port was that long, plus the length of whatever the box was. so it made it super long. Edited November 3, 2009 by ExpoSport Quote Link to comment Share on other sites More sharing options...
a_steezy Posted November 3, 2009 Author Report Share Posted November 3, 2009 (edited) the RE calc is known to not be very accurate. putting those dimensions in my calculator, i came up with around 43 hz myself. and to take screen shots, press the PrtScn (print screen) button on the top right of your keyboard. then open paint, paste it there, resize or crop if you need/want, then save it and upload it to photobucket or wherever you put your pics EDIT: ^what he said, tho i think 7 hz is a BIG difference between the two. i did see someone tho put their total length in the port in the 'length 2' box which told the RE calc that the port was that long, plus the length of whatever the box was. so it made it super long. its the 15" lvl 4 i have sub displacement at .15" but i also set it to 0 and didn't change to much, i'll take screen shots but fawk, 44hz is a little high for my likings and it's a badass box... hah and for the re calculator, just put 0 for second port length or whatever, the 11 inches is in the first part Edited November 3, 2009 by a_steezy Quote '98 Dodge Durango 5.9L 5% front windows, 2.5% on all backs Alpine CDA-9883 Kicker ZX350.4 Kicker KS650's in all doors Kicker 1/0 hyperflex Link to comment Share on other sites More sharing options...
Decaf Posted November 3, 2009 Report Share Posted November 3, 2009 i got [email protected] with no bracing accounted for with bracing it should bring u up to [email protected] depending what u do Quote Link to comment Share on other sites More sharing options...
a_steezy Posted November 3, 2009 Author Report Share Posted November 3, 2009 i got[email protected] with no bracing accounted for with bracing it should bring u up to [email protected] depending what u do damn... i did a double baffle and a little triangle, type brace in the center Quote '98 Dodge Durango 5.9L 5% front windows, 2.5% on all backs Alpine CDA-9883 Kicker ZX350.4 Kicker KS650's in all doors Kicker 1/0 hyperflex Link to comment Share on other sites More sharing options...
Torres Posted November 3, 2009 Report Share Posted November 3, 2009 ok. post up some pics of both calcs so we can see what the differences are Quote Link to comment Share on other sites More sharing options...
a_steezy Posted November 3, 2009 Author Report Share Posted November 3, 2009 just figured it out, had to reset p-bucket password and such Quote '98 Dodge Durango 5.9L 5% front windows, 2.5% on all backs Alpine CDA-9883 Kicker ZX350.4 Kicker KS650's in all doors Kicker 1/0 hyperflex Link to comment Share on other sites More sharing options...
Decaf Posted November 3, 2009 Report Share Posted November 3, 2009 (edited) just keep using andym85's calc or expos personally i like andy's because u see the math and equations he uses... and u can do aeroports/circular ports did u put the correction andym85(amatt85) said to enter into cell H iirc? can u tell me what u have for cell H17 please... it should be =IF(A21<=L17+(J7-B18),A21-L17,J7-L17) Edited November 3, 2009 by Decaf Quote Link to comment Share on other sites More sharing options...
Decaf Posted November 3, 2009 Report Share Posted November 3, 2009 (edited) ok there are two big differences pay attention to the lengths of the port pieces... this is where its off in andym's... the actual wood length is 9.25"... his accounts for sub displ in the re it is 11"... does not account for sub displ (do u see how it says total port length of 17.75... this is why its lower) so shrink the box on ROE .15cuft by shrinkin one of the dimensions (ur gonna have to use tenths) and enter in 8.5" and you should have very similar tuning (takes a bow) Edited November 3, 2009 by Decaf Quote Link to comment Share on other sites More sharing options...
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