help with re sr 12 tapping noise

[burro breath 10+ year member]

ok so i bought an re sr 12" with dual 4s and put it in a 2 cu ft ported box tuned to 36 hertz. i powered it briefly with 80 watts rms to only one of the 2 coils. and it sometimes makes a tapping noise that sounds as if the coil is smacking the back of the magnet. the coil does not rub and the sub can handle 300 rms and i am only giving it 80. i just bought an amp that is 300rms and i was wondering if the noise will only get worse? and what could the noise be? thanks,

burro breath

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[chardy85 10+ year member]

you are probably clipping the power source. Either it cannot handle the ohm load or you are just trying to get too much out of it.

Don't just hook up one of the coils.....you "could" damage it

I would leave it off of the 80W or whatever and just wait until you have good clean power to give it

Curtis

 

[burro breath 10+ year member]

so i have to run it with both coils? and a better amp should solve my problem? thanks for the help,

burro

 

[pawn man 10+ year member]

either clipping the amp or the tuning on the box is way off. that sub will easily take 600 rms of clean unclipped power.

 

[burro breath 10+ year member]

i was told to use that box by alot of people on this forum. if it is the tunning of the box can i simpley put something in the box to decress the cubic footage to achieve the correct voulme?

 

[skateboardkid 10+ year member]

clipping the craap out of your amp and you can hear the square wave form maybe. Definitly not good to hook up one coil to some crapy lil amp and try to bump it.