Nick580 Posted August 4, 2014 Report Posted August 4, 2014 When building an enclosure you typically want a flat response curve from the output of the driver. Which I would think to mean less peaks in certain frequencies ranges. Does this also mean that certain frequencies could also be less pronounced? I guess my question is how do you attain a more flat response with a subwoofer enclosure for example. Would it require mainly adjustments to port length/ area, or does it have more to do with the internal demensions, bracing, ect ? Sorry if this question is vauge but I am curious about this idea and I am trying to optimize this home sub project I have going. Thanks for any and all input on the matter. If someone knows where to read some good information over this that would be greatly appreciated.
Kyblack76 Posted August 4, 2014 Report Posted August 4, 2014 around 4.24 million factors man..... SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold
Joe X Posted August 4, 2014 Report Posted August 4, 2014 In an anechoic chamber you could arguably build something decently flat and then fix some details with a parametric equalizer... Then many people who have heard a system playing almost perfectly in every respect will say, > this sounds like crap < Hardest part to figure out is *your own taste*, that you get to know listening to a LOT of setups be that car, home.. etc.
TRON Posted August 4, 2014 Report Posted August 4, 2014 Flat response is also called "reference" as in perfectly even levels across the entire spectrum or the reference of what music should sound like, or at least as closely similar to how it was mastered in a studio. The amount to factors involved to get flat response is insanly complicated. There's WAY more to it than just enclosure design, you need to know the vehicle's cabin specifics like air space and resonant frequency. There's just so much work involved. Avalanche Alpine Type S comps Alpine Type S 10'' Alpine MPR-F300 Alpine MRX-M50 Mechamn 270 XS Power d3400s
n8ball2013 Posted August 4, 2014 Report Posted August 4, 2014 Get a PWK design. It'll be so overwhelming not loud you'll have a flat response. THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger.
TRON Posted August 4, 2014 Report Posted August 4, 2014 Get a PWK design. It'll be so overwhelming not loud you'll have a flat response. I agree with this. Avalanche Alpine Type S comps Alpine Type S 10'' Alpine MPR-F300 Alpine MRX-M50 Mechamn 270 XS Power d3400s
philrab Posted August 4, 2014 Report Posted August 4, 2014 If you don't already have WinISD, that may help you answer that question. It'll let you look at a particular driver in different scenarios (sealed vs ported, more/less airspace, power, tuning freq) and show you what variables will give you what you're looking for. In my particular case, I lowered my tuning frequency a but to flatten out the response curve, and increased the enclosure size slightly. 2015 Toyota Tacoma Build Thread 2007 Mazda 3; 5000K HID's, Kenwood Excelon KDC-X997, Infinity Reference 6.5 comps in front and coaxials in the rear doors, JL 320.4 four channel, Rab Designs built ported enclosure with an SA12, Kenwood monoblock, Redline Leater shift boot/e-brake boot/center console cover, JBR short shifter/shifter bushings/rear motor mount. Build Thread 1996 Mazda Miata: Kenwood Excelon HU, Alpine speaker in the doors, Clearwater (miata specific) headrest speakers. 1994 Mazda Protege: Kenwood Excelon HU, Infinity Reference 2 ways all around, 2x RF Punch 10's in ported boxes.
TRON Posted August 4, 2014 Report Posted August 4, 2014 If you don't already have WinISD, that may help you answer that question. It'll let you look at a particular driver in different scenarios (sealed vs ported, more/less airspace, power, tuning freq) and show you what variables will give you what you're looking for. In my particular case, I lowered my tuning frequency a but to flatten out the response curve, and increased the enclosure size slightly. Because the plot line in that program is so fucking accurate... Avalanche Alpine Type S comps Alpine Type S 10'' Alpine MPR-F300 Alpine MRX-M50 Mechamn 270 XS Power d3400s
philrab Posted August 5, 2014 Report Posted August 5, 2014 If you don't already have WinISD, that may help you answer that question. It'll let you look at a particular driver in different scenarios (sealed vs ported, more/less airspace, power, tuning freq) and show you what variables will give you what you're looking for. In my particular case, I lowered my tuning frequency a but to flatten out the response curve, and increased the enclosure size slightly. Because the plot line in that program is so fucking accurate... Someone missed his meds this morning. 2015 Toyota Tacoma Build Thread 2007 Mazda 3; 5000K HID's, Kenwood Excelon KDC-X997, Infinity Reference 6.5 comps in front and coaxials in the rear doors, JL 320.4 four channel, Rab Designs built ported enclosure with an SA12, Kenwood monoblock, Redline Leater shift boot/e-brake boot/center console cover, JBR short shifter/shifter bushings/rear motor mount. Build Thread 1996 Mazda Miata: Kenwood Excelon HU, Alpine speaker in the doors, Clearwater (miata specific) headrest speakers. 1994 Mazda Protege: Kenwood Excelon HU, Infinity Reference 2 ways all around, 2x RF Punch 10's in ported boxes.
Krakin Posted August 5, 2014 Report Posted August 5, 2014 If you don't already have WinISD, that may help you answer that question. It'll let you look at a particular driver in different scenarios (sealed vs ported, more/less airspace, power, tuning freq) and show you what variables will give you what you're looking for. In my particular case, I lowered my tuning frequency a but to flatten out the response curve, and increased the enclosure size slightly. Because the plot line in that program is so fucking accurate... WinISD is a great tool to use when learning about enclosure design.... You can see what your response would look close to with no acoustic interference. But if you can do it better then please show us, add in cabin gain, add in baffle defraction, port compression, power compression, the acoustic dampening of your chairs and everything else... Krakin's Home Dipole Project http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370 Krakin, are you some sort of mad scientist? I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . What you hear is not the air pressure variation in itself but what has drawn your attention in the two streams of superimposed air pressure variations at your eardrums An acoustic event has dimensions of Time, Tone, Loudness and Space Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears, thus no formula can achieve a definite effect for every listener.
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