Speaker Playing 5 Hz Tone
Basically what happened was I got a base tone test on my phone which was plugged into my amp which obviously was plugged into my speakers. I pressed play and it played a 5 Hz tone. My speakers were moving A LOT and I almost instantly turned it off because I wasn't expecting that. The volume was not loud at all (but of course at 5 Hz i couldn't hear anything). The speakers are 8.5 inch JBL speakers and they are pretty old but sill in perfect condition. They are very good speakers, not some cheap stuff. I believe the cones have been replaced once because the old ones dried out and were no good. There is no visible damage to the cones and I played fairly bass heavy music after and they sounded just fine. So my question is, could the speakers have been damaged at all from my playing that 5 Hz tone and the speakers moving a lot?
Thanks for any replies.