i Recently bought a jbl BP 1200.1 and ive read up and apparently they have no SS filter , is this actually affecting anything? If so how and why? and more inportant if it is how do i fix it if its a big deal. Thanks

 

so called 'subsonic' filters are used to remove the lower bass frequencies, generally to prevent a subwoofer from playing below tuning in a ported box.

If you have a setup where you are ported above 30hz then you could run into trouble with the sub unloading (which can cause mechanical damage)

 

Well that sucks , my box is sittin around 45-48hz , What u gotta do to prevent this^^^ add like an eq of sorts or somthing?

 

inline rca bass blocker???? i dont think they even make on for that low lol.

no subsonic filter. man that must suck. i cant stand buying an amp without a variable subsonic filter

 

In your sig. it says your box is tuned to 35hz.....is it a ported box??

Unfortunately AFAIK there is no standalone SS filter available for mobile use....if you are running a sealed box it is not as much of an issue, a ported box will be a problem if you play loud music or test tones below the tuning frequency.......

HTH

 

Actual term is "Infra Sonic" having to do with hearing, not the speed of sound, as in Sub-sonic speed.
and I agree,not an issue unless your LP is warped ;-)

 

Get yourself a outboard active crossover that has a subsonic filter built into it. IIRC I have one at the shop that has overdone it's welcome. I will check tomorrow on it and pricing for it.

 

my sig is my old setup , to lazy to change it lol , now i got 2 rf t1 12's and the jbl 1200.1 in 3cu. tuned to like 48hz.

 

I just knew one of the nit-pickers would jump on that part.......

I still have milk crates full of LPs.....hopefully still flat.....

 

perhaps this would work ??

Parts Express: FMOD Crossover Pair 50 Hz High Pass