Need Some Help

[truck_buster23]

Does anyone know the peak freq of my 06 trailblazer ls?

[Boon]

Nobody can. You could get a ballpark figure but to truly find out you need to find yourself a termlab/AC meter and do some sweeps

[truck_buster23]

Ok thanks bro I talked to a few people with trailblazers and with sub up port back like I'm doing they peak between 38 to 40hz or so. I guess I'm going with 38hz and see what happens.

[Boon]

Man, I hope you're not wanting to win any big competitions or anything... if I'm 3hz off my peak I'm down like 6dB in my car.

[raytard]

you'd probably want to tune a few hz under the car's loudest frequency...atleast from like everything i've been told

like 3-5hz under the peak (which will change with dynamat, seats in/out/folded up or down/size of woofer/size of box/windows up or down)

if you're concerned with getting big numbers, get an ac mic, build a representative size sealed box, run sine sweeps, and tune 3-5hz under that with 14-16sqin port/cube...should be a good start