Just got my JL Audio F112 on Friday, and already I think i may have an issue.
When i push the "Demo" button and the sub sweeps through various frequencies, there is one moment in the demo where i can hear a faint clicking noise in the woofer. It goes on for about 10 sec on a certain frequency. It is noticeable if your a foot away.
Trying to narrow down the frequency, I downloaded the RealTraps frequency test CD and went through the various tracks. I immediately noticed that on track 2, which is the 20Hz test, I get the same faint clicking noise in the woofer. It makes a sound as if you graze your finger over the woofer, like a higher pich tapping/clicking noise, which is directly coming from inside the woofer. The clicking is audible from about a foot from the sub. Just to make sure i was over the limits of the sub, I took out my SPL meter and I measured the output at about 80db from 2meters away, which is within the limits of this sub., so i don't think its a distortion issue. The clicking progressively increases in volume as i get to 90db. It sounds abnormal.
I tested other frequencies and it happens only from about 15Hz - 23Hz starting at about 80db.
Is my Fathom defective????