Everything about subwoofers

[CKY 10+ year member]

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 !

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[PV Audio 5,000+ posts]

http://www.howstuffworks.com

search speakers. thats where i learned how speakers work.... just stay on the forum and you'll learn all u need to know. i still need to (aka wiring lol)

 

[CKY 10+ year member]

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

 

[jemorgan85 10+ year member]

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.

 

[jemorgan85 10+ year member]

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.

 

[CKY 10+ year member]

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!

 

[PV Audio 5,000+ posts]

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

 

[CKY 10+ year member]

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

 

[kickerlivinloud 10+ year member]

This might help also....

http://forums.caraudio.com/vb/showthread.php?t=53143

Jon

 

[CKY 10+ year member]

Thanks a lot everybody , everything is clear now ! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif