Originally Posted by Hayb2006
I'm having issues.... My uber 10 is rattling when the sub volume is at 65%.... Is this supposed 2 happen or is there something wrong here
Back in this thread around post 900 or so there's a discussion a few of us had about a phenomenon we were calling "port chuff". I believe one of the guys was using an Uber 10 as well, I have a Super 8.
At any rate, what we are experiencing is a fairly rough distortion (grating) as the frequency to the sub falls below a certain level. On my Super 8 this seems to be worst in the middle 30's hz range.
This isn't a problem with music, but can be with movie effects. It's pretty distracting.
I had intended to get with Orb about it, but with one thing or another haven't gotten around to it. May try in the future.
On the theory that this was mainly distortion due to the air being pushed out the reflex port (that's what it sounds like at lower testing volumes) I did try completely sealing the port with a plumbing pressure testing plug. To my surprise, it actually seemed to be worse. With the port plugged the noise seemed to come from the driver area but was hard to tell. At the time I didn't test to see if with the port plugged there was any leakage around the driver itself.