Subsonic filter question
 

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.......:smokin:

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.......:cheeky4: :laugh:

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

perhaps this would work ??

Parts Express: FMOD Crossover Pair 50 Hz High Pass