figuring out the resonance freq of the car??

[danteBirosel 5,000+ posts]

How do you figure out the resonance freq of a car/suv??

-Dante

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How do you figure out the resonance freq of a car/suv??

-Dante

You need a termlab to do that. If you have one let me know.

 

[prochobo 10+ year member]

Lol he does. Set the Termlab for peak, play a sine sweep at around 3/4 volume, look at the bars on the bottom and that's your peak frequency.

 

[ngsm13 5,000+ posts]

Lol he does. Set the Termlab for peak, play a sine sweep at around 3/4 volume, look at the bars on the bottom and that's your peak frequency.

Incorrect.

nG

 

[squeak12 10+ year member]

Im going to guess you will need a box that has flat response with a sub then do the above method or something similar with seperate tones.

 

[prochobo 10+ year member]

Incorrect.
nG

You're right. Forgot to figure in the box.

 

[Wkbdkid 10+ year member]

for a flet response shouldnt he use a sealed box

 

[ngsm13 5,000+ posts]

You're right. Forgot to figure in the box.

Still incorrect.

nG

 

[prochobo 10+ year member]

Still incorrect.
nG

And subs.

 

[ngsm13 5,000+ posts]

And subs.

No, you just don't get it. You just simple made an incorrect assertion.

/story

nG

 

[skmfkr 5,000+ posts]

Lol he does. Set the Termlab for peak, play a sine sweep at around 3/4 volume, look at the bars on the bottom and that's your peak frequency.

well thats correct, but its not the reso freq

 

[954runner 10+ year member]

No, you just don't get it. You just simple made an incorrect assertion.
/story

nG

why not just answer the question???? //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

 

[TheSpeakerMan 10+ year member]

why not just answer the question???? //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

I felt the need to let you know, I'm a queer rocket.

yo.

 

[myvanpounds 10+ year member]

just hit the roof with the TL in there lol ghetto testing at its best

 

[bigbassman Premium Member]

there's 2 big issues with the so-call resonant frequency of the car..

1.. it really doesn't exist..

map a car's transfer function, and you'll see it lacks a big peak..

semi-acheoic chambers (aka car) will boost 12db/octave starting at the corner frequency of the chamber..

2. the peak frequency in the vehicle, is moreso determined by the working efficiency of the enclosure design, combined with the woofer(s), than anything else...

doing low volume sealed box testing is a waste of time....

mock up a design, build it so that you could adjust port length, and area.. and start testing... find the loudest frequency in the car, with that setup, and change one parameter, whether it be shortening the port, or increasing / decreasing port area.. and retest.. continue doing that until you find what is the most efficient..

Loyd L.