Resonant Freq?

[lilmaniac2 5,000+ posts]

well with a md sidewinder 12 in a 2 cube box sitting in the back where the jump seats are firing up played 45 hz

new box with a ssd played 40 hz , played 45 hz with a sidewinder

napalm in that same box plays 35 hz and does a 140 on the dash

 

[bdawson72 5,000+ posts]

how complicated a build would this be on a scale of 1 to 10

 

[lilmaniac2 5,000+ posts]

a walk through? prolly 7 or 8 out of 10 i guess?

do i get a gold star for that

 

[Mr Bojangles 10+ year member]

When you get the resonant freq of a vehicle how do you calculate that into building a box?? I mean What do those results determine? how big the box should be or ports or what?

 

[lilmaniac2 5,000+ posts]

i dunno i never used it for anything lol.. i just buid it and chang stuff til it quits getting louder

 

[CBFryman2 5,000+ posts]

Tuning around resonant frequincy is an easy way to get loud with out a lot of testing and time. Do a sweep, find the aproximite resonant frequincy. Tune a box to it and you will usually throw up some decent numbers. It is a good starting point as well.

SPL with out the build and rebuilt and retest and rebuild and retest.

 

[bigbassman Premium Member]

yeah... just guessing and going does ok enough..

but taking the time to go balls out is the difference between hangin with the locals, to hanging with the world..

//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

mr bdawson sir.. I'm willing to bet myself, and hicks would make a trip down one day to get you started on the right foor... //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Loyd L.

 

[JimJ 5,000+ posts]

I wonder what we use here for industrial hygiene reasons. We have work limits sometimes being exposed to loud noises.

I'd assume the weighting is different, as for OSHA regs you're measuring A-weighted "ambient" noise that covers the spectrum while the TL is measuring a singular frequency...

 

[bdawson72 5,000+ posts]

yeah... just guessing and going does ok enough..
but taking the time to go balls out is the difference between hangin with the locals, to hanging with the world..

//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

mr bdawson sir.. I'm willing to bet myself, and hicks would make a trip down one day to get you started on the right foor... //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Loyd L.

Yesssssss!!!!!!!//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[SUB_URBAN 10+ year member]

anyone want to take a guess at the Resonant frequency of a 95 suburban lol.

 

[luvinthebass 5,000+ posts]

37 hz

 

[SUB_URBAN 10+ year member]

37 hz

Nice try, on an ac 190 it was 46 hz, This thing really does kill sound. roll the windows up and you really have no shake or anything. Steel Body FTW.

 

[Mr Bojangles 10+ year member]

anoyne wanna guess a jeep cherokee 4 door? heh... :0