LsChevy Posted March 27, 2015 Report Posted March 27, 2015 What's the best route to accomplishing a wide bandwidth? Is it more of the sub or box..or maybe a mixture of both? I read a lot about subs with great lowend and also have read about subs that's loud but is lacking on the lows
bass2theface420 Posted March 27, 2015 Report Posted March 27, 2015 It is mostly box dependent but a beefy sub doesnt hurt.lol.. In my experiance for wide bandwidth you want a big box, low-tuning around 28 HZ and 12-14 sqinches of port area. More port area will give you a peaker response but less bandwidth. -2004 Saturn Ion System-in process of rebuilding to 2- 15'' Fi BLS 2- AQ 2200 2/0 Sky high OFC Stock Alt 1-XS 1200 & 1 Kinetic 2400 All in the trunk -Live happy or die sad. -We all come from one great though of the creator we all all one, and have the power to change our reality if we will.
Krakin Posted March 27, 2015 Report Posted March 27, 2015 In my experiance for wide bandwidth you want a big box, low-tuning around 28 HZ and 12-14 sqinches of port area. More port area will give you a peaker response but less bandwidth. Just oh so wrong.... 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.
Krakin Posted March 27, 2015 Report Posted March 27, 2015 It will always be a mixture of both. However, in the end the enclosure determines most of it. The best advice I can give you without being there to measure your car and do calculations is to build an enclosure with PLENTY OF PORT AREA. Then once built just experiment with different orientations of the enclosure in the car. Acoustics can be a bitch or very helpful. 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.
LsChevy Posted March 27, 2015 Author Report Posted March 27, 2015 Does the type of port make a difference
Triticum Agricolam Posted March 27, 2015 Report Posted March 27, 2015 So just how do we define wide bandwidth? Pretty much every speaker's output rolls off above and below a certain range. One way to quantify that is the speaker's f3 point, the point at which the response is 3 db down from the peak. Every speaker has an upper and lower f3 point. The frequency range between those two f3 points is what I would call its bandwidth, though there are other ways to define it. So to get a larger bandwidth you need to have a flatter response curve to push those f3 points father apart. Getting a flatter response curve requires the right combination of subwoofer and enclosure. To do it right also requires accounting for the environment it will be played (cabin gain). A lot of SPL subs are very peaky in their response, no matter what you do with the enclosure you will never be able to completely tame that peak, so you need to pick an appropriate sub for the job. Also the larger the enclosure and the higher the tuning the more peaky your response will be. Contrary to what bass2theface said, you are probably going to want to be on the smaller side of things when it comes to enclosure size and use a lower tuning. Large port area does not make a box peaky or otherwise affect its bandwidth in any way, you would be wise to heed Krakin's advice and use plenty of it. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds:
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