Is it safe

[SkyLegend 10+ year member]

If you play a song below the Hz your subs or 6x9's can hit, and let them do some excursion. Because I have some songs, Hoods Run Down being one of them, that I can't hit all the notes and the subs just do some excursion with out producing the bass. I know my 6x9's can't hit lower than 50 Hz, I have 2 12' Kenwoods that are old as hell, I believe they can hit as low as 40-45Hz and 2 8' JBL that I believe can hit 30Hz.

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[Cruzer 10+ year member]

im talking subs here

sealed or ported?

sealed should be no problem playing anything on them, not to mention most amps have a subsonic filter.

ported, depends on ur tuning, but i would say u need at least a 25hz sub sonic filter.

the kenwoods should play down to 30hz fine.

im not familar with the song hoods run down, but perhaps it has some tones that are inaudible, but subs will still play them, u just cant hear it. will feel air and see the subs moving.

6x9s if ran on an amp should probably have a hpf on them preventing any low notes from damaging them.

if ran off head unit, wont see enough power to damage them imo.

 

[SkyLegend 10+ year member]

I have a 200Watt amp to them all, I just want to know if it's safe to let them hit the notes that they can't hit.

 

[SpeedEuphoria 10+ year member]

put it this way, when they are hitting the "notes that they cant hit" the power handling is greatly reduced. So if they are 50wrms its only safe for 10-25rms at those freq's. Thats why you should have a HPF set at 50-80 preferably 80

 

[helotaxi 5,000+ posts]

It depends. In many cases the speakers simply runs out of motor force before it reaches a limit and that is what causes it to be unable to play that freq to begin with.

It's perfectly possibly to reach an excursion limit on a sub in a sealed box on low freqs.