Krakin Posted July 14, 2016 Report Posted July 14, 2016 Impedance changes based on frequency and a few other factors, but just because you are wired at .25 Ω DC resistance you could be seeing anywhere between below .25 Ω to over 40 Ω. While the box does affect impedance, you will still have these fluctuations in impedance whether or not there even was a box. For a better understanding of the electrical aspect of car audio I suggest this website as a starting point, http://www.bcae1.com/ . And do as it says, do not move on unless you fully understand the page you are already on. 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.
d-nice88 Posted July 14, 2016 Author Report Posted July 14, 2016 Its an audio legion 3.5 k not recomended to go below 1 ohm. But meh wat the hell and thanks krakin im looking into the site now. Like i said i wana soak up as much info as i can. For real thanks alot for sharing yalls knowledge i really do appreciate it.
Krakin Posted July 14, 2016 Report Posted July 14, 2016 I don't see any benefit of going below 1-ohm DCR for anyone except for burp vehicles, even then loss in efficiency sometimes out weighs the lower impedance. You also lose a very large portion of the electrical cone control when lowering DCR as this is the main portion of finding your dampening factor. But just to show how useless lowing your DCR for an everyday application. Increasing dB by 3 requires 2x the power output (watts). +4 dB = x4 the power +10 dB = x10 the power +40dB = x10,000 the power. Now to relate to SPL: The following table gives some more examples of these relationships: Note it is somewhere around +10 dB where you start to hear a 2x increase in volume, however this varies person to person based on how sensitive your ear drums are, the shape of your ear, ect... For more information on this check out this site: http://geoffthegreygeek.com/amplifier-power/ It even has some dB level pink noise to let you hear the small difference between a 10 dB range. 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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