Axiom Home Page Forums General Discussion Technical Questions DVD Player Vibration - HELP

The kind of shaking we are seeing is not that of an object moving. Its almost like watching satellite television when a storm is coming...lightning snow noise type stuff.

I had the same problem with my Directv box and EP500. I moved the sub a little further away from the STB and the problem went away. I don't think it was a vibration problem as much as an electrical interference problem. I think it had to do with the way the cables ran along side each other. It was a strange effect on the screen, kind of what you would expect if you laid your head on the subwoofer while you were watching TV. The bass would "blur" your vision.

Interestingly enough, its not a blurred vision.

As for grounding...its plugged into a panamax line conditioner right now. I will try to move it to different power and see if that resolves the situation...but I dont think that just putting a hand on it resolved it. It was almost like it had to be held...like a baby.

As for interference....the video cables are all routed throgh the walls, the ceiling to the projector. The sub cable is on the floor going to the sub.

I didn't mean it acually blurred my vision but that was the effect it had on the picture. I'm with Bruce on trying another outlet if you have one available. When I moved my sub a little farther from my STB to remedy my situation I ended up plugging it into another outlet. That could do the trick.

I did move the sub to two locations and two different outlets.

Its got to be those DVD players....

Tarun,

I discussed this with our chief engineer, who designed the EP600 and EP500 amplifiers. He says that if you leave the EP500 powered up but reduce the volume to 0 and then gradually increase it--you said the jitter/interference appears at the point the 500 is outputting bass--then the problem is vibration-borne.

Try putting something very heavy (a brick?) on the top of each DVD player to see if that solves the problem. Are the DVD players up-scaling or up-converting? If so, the scaler/converter has to lock on to new sync, and if the video data stream from the DVD has glitches because of mechanical vibration of the DVD laser assembly or the motor/disc-clamping mechanism, then that could cause the intermittent video jitter.

The digital amplifiers in the EP500/600 subwoofers have no inherent RF energy that can interfere with DVD or projector operation, so I'm certain the problem is vibration-borne. Let me know how it turns out.

Regards,

Tarun,

Try running a set of component video cables directly from the DVD players to your projector to eliminate the possibility that an intermittent video cable inside the wall is being vibrated by the EP500. We had a couple of other cases where the EP500 was vibrating a video cable to the TV display, causing a visible "jitter" of the picture. The video cable hot or ground lead were at fault, and replacing the cable cured the problem.

Regards,