Jhensley209 Posted April 27, 2016 Report Share Posted April 27, 2016 What exactly does box tuning mean? For example if you built a box and tuned it to 32hz does that mean it won't play below 32hz or above 32hz or is that the loudest tone it will play? Link to comment Share on other sites More sharing options...
rockFord_Expedition Posted April 27, 2016 Report Share Posted April 27, 2016 Box tuning is the most efficient frequency by design Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire Link to comment Share on other sites More sharing options...
Broke_Audio_Addict Posted April 27, 2016 Report Share Posted April 27, 2016 It will have a peak around the tuning frequency, How well it will play above and below the tuning will depend on the enclosure design. That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals. Link to comment Share on other sites More sharing options...
Triticum Agricolam Posted April 27, 2016 Report Share Posted April 27, 2016 What exactly does box tuning mean? For example if you built a box and tuned it to 32hz does that mean it won't play below 32hz or above 32hz or is that the loudest tone it will play? A ported box is a resonant system, the tuning frequency is where the system resonates at. Right at the tuning frequency there will be a pronounced reduction in cone excursion and if you took an impedance sweep it would be the low point with peaks on either side of it. You can play below the tuning frequency, but output will be dropping off and cone excursion will be rising quickly. In a car cabin gain will help boost how much output you get below tuning, but don't bank on getting more than a few Hz. Box tuning is the most efficient frequency by design [box physics nerd mode on] - At tuning most ported boxes are relatively inefficient (in terms of dB/watt), this is because the impedance is low so they are sucking in a lot of amperage/watts. The tuning frequency is often (but not always) where sensitivity (dB/volt) is very high though. Since sensitivity is usually what determines how loud our system can get with a given amp, this is a good thing. [box physics nerd mode off] "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: Link to comment Share on other sites More sharing options...
rockFord_Expedition Posted April 27, 2016 Report Share Posted April 27, 2016 What exactly does box tuning mean? For example if you built a box and tuned it to 32hz does that mean it won't play below 32hz or above 32hz or is that the loudest tone it will play? A ported box is a resonant system, the tuning frequency is where the system resonates at. Right at the tuning frequency there will be a pronounced reduction in cone excursion and if you took an impedance sweep it would be the low point with peaks on either side of it. You can play below the tuning frequency, but output will be dropping off and cone excursion will be rising quickly. In a car cabin gain will help boost how much output you get below tuning, but don't bank on getting more than a few Hz. Box tuning is the most efficient frequency by design [box physics nerd mode on] - At tuning most ported boxes are relatively inefficient (in terms of dB/watt), this is because the impedance is low so they are sucking in a lot of amperage/watts. The tuning frequency is often (but not always) where sensitivity (dB/volt) is very high though. Since sensitivity is usually what determines how loud our system can get with a given amp, this is a good thing. [box physics nerd mode off] I was using 101 language lol Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire Link to comment Share on other sites More sharing options...
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