Everything about subwoofers

CKY
10+ year member

pren00b
Hello everybody ! I'm pretty new in this domain , and i'm interested in learning about subwoofers , i've had no luck searching the web and i would really appreciate if you could give some links or directions into learning about subwoofers ... how do they work , what's "tuning" a subwoofer , etc.

Thank you in advance !

 
Yeah that's where i learned about speakers too , but i know how a speaker works since like 6 years ago .... i generally know about car audio , but i don't know what's "tuning a subwoofer" , how does a port works , and stuff like this //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 
A subwoofer is a mechanical device that turns electrical energy into mechanical energy, which in turn, moves air. It is used as a low frequency transudcer in audio applications. It is comprised of a motor (magnet structure, former, voice coils, pole, gap), the suspension (cone, spider, surround) and the basket. The electrical signal is moved into the voice coils, which in turn drives the motor... then the motor causes the suspension to respond accordingly.

A subwoofer's theoretical potential can usually be seen in the T/S parameters, developed by Thiele and Small, two historic acoustical researchers.

 
Yeah that's where i learned about speakers too , but i know how a speaker works since like 6 years ago .... i generally know about car audio , but i don't know what's "tuning a subwoofer" , how does a port works , and stuff like this //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif
Tuning a subwoofer means that you are changing it's environment to suit a specific frequency. When you tune for bass applcations, you usually see tunes range from 25-50 hz..... with 25 being for a flatter, more SQ approach, and 50hz for a more non-linear, peaked response that capitalizes in SPL.

The port works by utilizing the rear waves that radiate from the subwoofer, in unison with the waves from the front of the driver. In sealed applications, the rear waves turn pretty much useless, becuase they have no where to go. In ported alignments, you are utilizing these waves so that they are delayed just enough to compliment the other waves from the front of the subwoofer. This delay occcurs, the port amplifies the rear waves, and you have constructive sound.

 
Thanks a lot guys !! I now understand ! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

And what program would i use for tuning calculations?

Thanks!

 
A subwoofer is a mechanical device that turns electrical energy into mechanical energy, which in turn, moves air. It is used as a low frequency transudcer in audio applications. It is comprised of a motor (magnet structure, former, voice coils, pole, gap), the suspension (cone, spider, surround) and the basket. The electrical signal is moved into the voice coils, which in turn drives the motor... then the motor causes the suspension to respond accordingly.
A subwoofer's theoretical potential can usually be seen in the T/S parameters, developed by Thiele and Small, two historic acoustical researchers.
btw english usually works, let alone hes romanian lol //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

 
Nah , i understand perfectly , i'm not really that noobish //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

btw english usually works, let alone hes romanian lol //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif
 
Thanks a lot everybody , everything is clear now ! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 
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CKY

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