Axiom Home Page Forums General Discussion Home Theater Subwoofer POP

I'm hoping someone can tell me why this happens. There is a LOUD POP coming from my sub. In the past in only happened once during a movie. Today i played around with the sub and wanted to see how high it could go. I out the trim on almost max.... Usually I have it at 9' o'clock. Anyways I was playing far cry 2 and every so aften when i threw a granade the sub would pop very loud. This isn't how i normally run the sub so I guess it's not a huge issue, but I am curious if it's damaging the sub to run it that high? Also this did happen once before when I had the sub trim at 9' o'clock. It's the new ep350 by the way.

Thanks in advance.

You are driving the sub into clipping, that's the "pop" you are hearing.............over excursion of the driver. You WILL ruin the driver if it continues.

Thanks I will make sure not to drive it that hard again. It did happen once during normal use however, which worries me.

Your playing games? Computer or Game System? If computer it might be your sound card is crap, not sure.. Should be no reason why you would max out your sub volume, unless you don't have things calibrated on the receiver correctly.

on the ps3. I just wanted to see how loud it could go that's all. I only played that way for 30 seconds or so until i heard the pop. My walls shook too.

My 350's are calibrated to the rest of my speakers, around 75dB using the receivers test noise. I've played very very low subwoofer test tones from youtube at very loud levels, clear, low, and no pop.

Now you have me worried. I've had the same sub about 2 months and have noticed on a couple of movies a high pitched squeak from the sub during a couple of high LFE scenes. No, there are no animals inside. I could reproduce it on those scenes. I was running it at the 10 o'clock position so while it was at a high volume I don't think it was really up too loud. I hope this is not an ongoing issue as it sounds great for music but it sounded really bad when it occurred during the movies.

Wow guys, not sure. Both my 350's up front are about 1 o'clock, and my 600 in the back is at 6 o'clock, receiver at 0dB. Now my room is very large so that could play a part in my settings. I've never experienced any strange noises for any movies.

Their input levels might be clipping as well..

Could you explain what you mean by this to a noob like me?

I too was able to reproduce this effect during a particular scene in a movie. At first I thought it was there from the source, but it wasn't.

Mark can you elaborate? What do you mean clipping from the source? What could cause this? I am using the 2809ci to drive the speakers by the way.