Axiom Home Page Forums General Discussion Technical Questions the dreaded vibration is back on the ep800

when the cable causes increase in the hum/vibrations it is indeed connected to the receiver.. but this happens even if the receiver is not plugged in (no power)? I just find it weird.

So it looks like I'm going to have to live with it? That sucks. I didn't do anything to cause damage to the sub... I didn't even put the sub on the truck with the other speakers, I drove it here in the magnum myself to be on the safe side. Like I said, when I left Axiom with the sub there was still hum, I get home and the hum was gone... I get here and the hum is back... maybe I have to move again?? lol!

I'm going to send Alan a private message and see what can be done. Thanks for all the input guys, I really appreciate it. I'll let you know comes of it.

I'm curious: does the cable cause an increase in the hum if it's plugged in to the sub but not the receiver?

The fact the hum was still there when you left Axiom with it and then it was gone at the old house suggests to me a loose/faulty connection/component in the amp. Now that the sub/amp has been moved and bounced around a little the faulty internal connection/component is now causing the same problem. I think Axiom should/will look after you with another new amp/sub as it has a 5 year warranty.

BTW if you purchased the EP800 during one of the initial runs, there has been two or three amp revisions since then. If this is the case you would get the version 3 amp for replacement. It is supposedly a more robust design in terms of reliability and performance.

Theoretically, at least, Axiom was shipping new amps to every EP800 owner. Not sure if they finished that or not, but I'm pretty sure Ian said they wanted to finish that before they shipped the VP180, so maybe.

Yes, it does! and then even more when I plug it in the receiver. but it's definitely noticeable you can hear it and feel it!

Do you know what this could mean then?

I don't think I have the new amp... just spoke to Brent and he said that there were no new amps that were supposed to be shipped to ep800 owners.

I should be getting a return phone call today to see what can be done.

I think you may be right. I'm going to check with a ground chassis screw first, and if that's a no go... I'm going to have them send out a new amp (hopefully I'll get version 3??).

When did you get the sub, Majik?

Version 3 is the latest amp for the EP800. That is what you would get if you buy one brand new at this time or acting as a replacement to an initial run EP800.