Axiom Home Page Forums General Discussion Technical Questions EP500 Sub rattles sometimes

Bob, would that delay your order also or did Axiom have the EP-500 available for the switch?

It might. originally ordered just the 800s and after week 3 added the rest of the 5.1 system (Ah, the good old days when I still had overtime). It added another week to my order. When I updated the order I was told that they would average the wait time for all speakers ordered.

Ascension, could you shorten the wiring, or turn the lugs and retighten to make them shorter? I remember my first 500, the wires running from the amp to the driver were very long and resting on the port, causing a rattle. I had to rearrange things as well and reported this to Axiom, they have to have enough slack so you can remove the driver. Maybe you could place a thin piece of foam or something between the two.

Thanks for the reply sirquack. I'll try to shorten the wiring. I was going to try to move around the foam to help it not knock against the port. Does it matter if I move around the foam too much I wonder?

Hi Ascension,

I haven't had my EP500 opened up for a couple of years, but if memory serves, there is also a plastic boot around the amplifier inside the EP500, and the boot can rattle, so you should check it as well.

When we were developing the EP500, I exchanged about three different amplifiers, as well as different boards on the amplifier, so I had to open it up numerous times. I seem to remember a rattle developing with the plastic boot, and I managed to get rid of it.

Also keep in mind that every object in your room has its own resonant frequency that can be set into motion by a particular frequency. I once had metal Venetian blinds that rattled and I swore it was coming from the subwoofer.

Regards,
Alan

Also, make sure that it isn't port noise you are hearing. I found that if I play certain scenes with the master volume up high, and the sub calibrated slightly "hot", I would get port noise.

This is another reason I want an ep800!

Thank you for the advice Alan and terzaghi. I very much appreciate it! I'll check that tonight when I get home, because it sounds like it's close by the amp section, but like you said, it could be something totally different in my room that's rattling.

Here is the link from when I was having problems:
http://www.axiomaudio.com/boards/ubbthreads.php?ubb=showflat&Main=13665&Number=191895#Post191855

In the end axiom ended up sending me a completely new ep 500 (after sending me a new amp)

I may end up calling axiom. I took out the amplifier last night. I made sure the wiring wasn't touching anything. I checked the plastic boot on the amp. It wouldn't budge at all.

Next I checked the plastic port to see if it was loose. It seemed like it was built in there pretty tightly with no movement whatsoever.

I will remove the driver tonight and play with that a little bit. Maybe I'll remove the amp again and see if the cord moved while I was putting back in the amp.

I never realized how heavy that freaking amp is. Very well built!! Kudos to you axiom for a solid amp!