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Old 17th February 2007, 06:39 AM   #1
diyAudio Member
Join Date: Feb 2007
Location: Perth Western Australia
Default calculating resonating frequency

Hello every1, only been playin with car audio for a little while.

How do i calculate the resonating frequency of my car....????
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Old 17th February 2007, 01:58 PM   #2
Volenti is offline Volenti  Australia
diyAudio Member
Join Date: Aug 2003
Location: Australia
The interior space of the car is too complex to model it, the easiest way to find it is to compare the response of a sealed sub in open space to the response in the car (in the same location that the intended sub enclosure will go) the response will have a peak at the car's res frequency.

note; if you intend to use a wall or a very large enclosure that can change the res frequency (usually higher)

edit; here's an example;

Click the image to open in full size.

Yellow is sealed in open space, green is the response in a medium sized wagon (subaru forester) pink is the response in a small sedan (mitsubishi lancer)
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