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  1. #16
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    Re: review and correct my porting tutorial please

    Quote Originally Posted by req
    thats why its not public yet. its not linked via the main page, i only posted it in here so far

    ill add\change all that stuff, and let ya know. but basically, its correct (aside from points listed above)?

    ill get it all done on mondy hopefully.

    off to go snowboarding

    thanks nick!
    Nope, I didnt see anything else thats really off. Again, I didnt try out your actual calculator though.

    Be safe.



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  2. #17
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    Re: review and correct my porting tutorial please

    lol, be safe :P

    ill update it tomrrow when i get back to work (backuing up the system. gotta burn mad discs and have free time while im doing it)

    ill let you know, thanks a ton nick.




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    Re: review and correct my porting tutorial please

    Hey, dont most people tune their subss to like 65 hz or somethin? Why so low?




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    Re: review and correct my porting tutorial please

    Quote Originally Posted by 8inw7
    Hey, dont most people tune their subss to like 65 hz or somethin? Why so low?
    Depends on the driver and the owner.

    For daily, you usually want a lower tuning to acheive a flatter respone.



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  5. #20
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    Re: review and correct my porting tutorial please

    I think that he might have meant to say 65hz was a crossover point not tuning?




  6. #21
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    Re: review and correct my porting tutorial please

    Quote Originally Posted by HAVINGFUN
    I think that he might have meant to say 65hz was a crossover point not tuning?
    yes, possible. But I generally pass subbass <65hz also.



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  7. #22
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    Re: review and correct my porting tutorial please

    sorry for not updating nick, but im going home eairly because i think i have tonsilitis and im going to a dr appt.

    ill try and get it set up at my house so i can fix it there.




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    Re: review and correct my porting tutorial please

    Quote Originally Posted by req
    sorry for not updating nick, but im going home eairly because i think i have tonsilitis and im going to a dr appt.

    ill try and get it set up at my house so i can fix it there.
    Bro, if you're feeling ill... don't even worry about this place. LoL...

    Internet forums & help < Getting better. IMO.

    I'm not going anywhere..

    -Nick



    What the f00k happened to this place?

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    Re: review and correct my porting tutorial please

    Quote Originally Posted by HAVINGFUN
    I think that he might have meant to say 65hz was a crossover point not tuning?

    Well i obviously dont know what im talking about. I thought tuning meant that the stated frequency was the highest possible frequency the sub plays. I looked up crossover point and i understand that to be the point where all frequencies above a point go to like your rear speakers n all below a point go to your sub. I guess i did mean a crossover point.

    Now i must ask what is tuning? Why do you tune to certain frequencies? How do you tune to certain frequencies?




  10. #25
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    Re: review and correct my porting tutorial please

    can you take this one nick? im going to bed and i feel ike ***

    ill try and get some updates someday *sigh*




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    Re: review and correct my porting tutorial please

    tuning = optimizing a sub's frequency response curve in order to manipulate a peak in SPL around that frequency. However, below that frequency, you don't wanna mess with. So that's why a little below your tuning frequency is the lowest frequencies you'd get some good output from, and below that, it could get crazy; therefore a highpass should be somewhere near your tuning frequency.

    you tune to certain frequencies cause...umm....certain frequencies have certain sounds??? If you've ever listened to sine waves of different frequencies, you'll know what I mean. For example, SPL is associated with the 50s & 60s hertz ranges. 30s and below gives that real low "sub-bass". may be a stupid analogy, but say the 50s & 60s range can be considered a slim fast guy...say bruce lee, punching you in your chest, while the 30s can be considered a big guy like the incredible hulk punching you in your chest. ah, I don't know...dumb analogy

    you tune to certain frequencies by routing the back wave from the subwoofer out of the box. the route & length that the back wave takes to exit the box is mathematically correlated to the tuning frequency, area of the port, & volume of the box w/o the port.



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    Re: review and correct my porting tutorial please

    Bro, if you're feeling ill... don't even worry about this place. LoL...

    Internet forums & help < Getting better. IMO.
    x2 man...I know someone who just passed....from the **** flu...so get your health

    also, Fs...the resonant frequency is also called Fb....

    and another thing, the port length should account for end correction, which is the port_width / 2. So that physical length of the port is actually Lv - port_width/2 instead of just Lv.



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  13. #28
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    Re: review and correct my porting tutorial please

    Quote Originally Posted by NjccBflo
    FS is not measured in sq in. Net volume should be explained as internal measurement after all displacements. -and- what about measuring in Liters...? Explain about measureing through turns (L & "Labyrinth" Ports grow long very fast because of this). What about Pi*R^2?

    On your box diagram you didn't account for the (3/4"?) width of Port Board 1 when you 'measured' "Y." -and- It looks like "X" only measure to the interior of the baffle. It should measure right to the atmosphere (outside).

    When I click onthe "Port Calculator" link the result is:
    bla bla bla
    -Nick
    k i got everything cept the port board 1 part and the labyrinth port part. i am not posative what the difference is between a labrynth and a slot, cept that since it folds there is more pressure or somthing and you have to compensate for this by making it longer? like i sad, i dunno but im trying to get it all in there. mind copy\paste the text from the site and chaning it or describing a little better what you mean?

    sorry it took so long. i think im going home eairly.




  14. #29
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    Re: review and correct my porting tutorial please

    bump?

    nick whered ya go?




  15. #30
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    Re: review and correct my porting tutorial please

    whasssup?




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