Swaggasaur Posted July 17, 2011 Report Share Posted July 17, 2011 i was wondering how i would calculate port when doing a kerf. like using torres, how would i enter it into the program? thanks Quote BHE Wall Build TEAM DC Audio TEAM XS POWER1986 Monte Carlo KMC Nova's 20"4 DC XL's W/ PSI Recones2 DC 5k'sPioneer PRS 8010 Audio Technix 6 XS Power D3100's 1 XS Power D3400 Mechman 220a Alternator Link to comment Share on other sites More sharing options...
stipek Posted July 18, 2011 Report Share Posted July 18, 2011 some say 1/3 of the kerf length is actual port length. it depends on how large the kerf is. if its an inch then it is basically noneffective. another rule of thumb is 1/2 the length. i haven't found any published literature confirming any calculations. for box building purposes i add 1/2 of the kerf length to the port length and the tuning should be close to the calculated tuning in torres. Quote Headunit - Sony DSX-200X Subs - (2) Modified American Bass 18's Monoamp - DD M4 Front Stage - CDT HD62-AS components with 4 Crescendo PWX 6.5 4 Channel Amp - Hifonics ZRX1000.4 Cadence 0 gauge Singer 275 amp Alt D7500 XS Power battery Quad 1/0 input Toolmaker terminals SMD OM-1 RGB LEDs BUILD LOG CURRENT ABOVE SETUP http://www.stevemeadedesigns.com/board/topic/191602-2003-bravada-2-18s-ab-dd-xs-singer/ BUILD LOG (2 MTX 7512's)http://www.stevemead...__fromsearch__1[/size] Link to comment Share on other sites More sharing options...
ReDDruM Posted July 18, 2011 Report Share Posted July 18, 2011 half of the kerfed part Quote TEAM BUILT FOR DECIBELS s10 blazer subs:2 Addictive Audio amp:Addictive Audio 500.1 batts:Vital Power vp1500(front), vp2000(rear) Link to comment Share on other sites More sharing options...
nCOMP1337 Posted July 18, 2011 Report Share Posted July 18, 2011 ive also heard half of the kerf added to port length and tuning should be about right Quote Link to comment Share on other sites More sharing options...
RAM_Designs Posted July 18, 2011 Report Share Posted July 18, 2011 half of the kerfed part This. 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...
Swaggasaur Posted October 7, 2011 Author Report Share Posted October 7, 2011 can someone give an example? Quote BHE Wall Build TEAM DC Audio TEAM XS POWER1986 Monte Carlo KMC Nova's 20"4 DC XL's W/ PSI Recones2 DC 5k'sPioneer PRS 8010 Audio Technix 6 XS Power D3100's 1 XS Power D3400 Mechman 220a Alternator Link to comment Share on other sites More sharing options...
STEvil Posted October 7, 2011 Report Share Posted October 7, 2011 If your kerf is 12" long then 6" of it is added to port length. Or 9/4.5, 8/4, etc etc etc.. you know, that thing called "half" Quote MickyMcD - "Capable of making some serious trouser flapping volumes at where's-my-testicles frequencies, the Servo-Drives used to be fairly jaw dropping..." Any time you have have a power wire next to your frame put some rubber hosing (or cut up an innertube) around it. The wire is bound to wiggle (due to driving or flex) and the casing will eventually wear through. Hammerdown... 1% no links to outside websites, business related FB/YT pages allowed. Link to comment Share on other sites More sharing options...
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