Subwoofer started rattling out of control!?
This morning at around 11am, my receiver was off (standby), pre-amp, and everything else for that matter, and all of a sudden my subwoofer (Dynamo 500) starts rattling out of control at literally 100% power it sounded like.
First thing I did was cut the power, it sounded the like amp was going to explode.
I then unplugged the sub, and the LFE in cable, and let it sit for a bit. I also turned the power knob down to zero percent, and plugged it back in with no LFE cable in.
Turned it on, instantly the same thing occurred, ear deafening rattling and noise. Flipped it off and unplugged it. 12 hours later it is doing the same thing.
I don't have a power conditioner just a power strip so I tried moving it around the house, I moved here recently and suspect a lot interference and dirty power. When I flipped a few light switches one time a little bit of noise came off of the sub, very subtle.
About a year ago, the sub began doing this strange thing where if I would turn my receiver off the sub would remain on and not go in stand by for maybe an hour or so, and when it did finally go in stand by it would begin making this humming/distorted/noise sound. Not very loud and it would last about 30 seconds and then cut out the blue on light would flicker the entire time with it, and then cut out. It has done this every single use since then. However if you start up my receiver while its doing this, it instantly stops and plays bass normally.
I'm suspecting the controller inside has gone absolutely nuts, but I don't know why. I've had for under 2 years and obviously have not mis treated it, it's hardly moved. I also don't really push almost ever.
On one or two occasions, while a video game was being played, a very low pass over would cause it to rattle horribly for a second or two. Very rare. I didn't think much of it, but I guess the writing was on the wall?
I've sent Martin Logan an email, and will call once it's normal business hours.
Does anyone have any insight as to what on earth went wrong? Or even better, has this happened to anyone before?