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WHAT KIND OF SPEAKER SHOULD BE USED TO FIND OUT THE RES. FREQ. OF THE CAR ? I HAVE REFERENCE MONITORS TANNOYS BUT I DONT THINK THEY GO THAT LOW AND THEY ARE BUILT FOR PRO APPS.
------------------ IM NOT THE BEST BUT IM GETTING CLOSER EVERYDAY !
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Never done it myself, but you could use any woofer with a reasonable amount of power. Run some sweeps at a moderate volume while metering. If the spl suddenly peaks at a certain frequency, then there is your resonant frequency. This is a very tricky issue though. This suggestion is only for people that already have an installed system and are just looking for "their note". If you are designing a system to hit at a certain note, then you have to take into account that after you install a wall and such, the cabin volume has changed and your note will not be the same as when you had an empty vehicle.
------------------ The Mack AKA Big Poppa Mack Daddy-- You better roll with the big mack, the man with the game Mack Daddy-- Gotta big snake, all you gotta do is make it dance, you know what I'm sayin'
Posts: 237 | From: East Texas | Registered: May 1999
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When I did mine I put one of my 12"s in a sealed box approximatly where my wall is then used cardboard to seal off the area around the single 12", played some test tones and voila! 51 hz.
------------------ Real show trucks are built, not bought!
Got juice?
Posts: 354 | From: Qualicum Beach, BC Canada | Registered: May 1999
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