Axiom Home Page Forums General Discussion Advice from Axiom Owners EP-500 Unequal Sound Pressures

Be sure to restack the subs abd repeat your tests. Do this about 6-8 times and you will have your exercize for the day. Yuk. Yuk.

Hey Ian, I know I did at least 12 recalibration tests on both of my 500 (which I received about 6 months ago) and 350v3 to get them setup properly. They both have excellent output, but it took quite a bit of trial and error on moving them around to get the sound I wanted. My room is very square like with a bit of "L" on the back part.

I wonder if there's a possibility that he might be getting what sirquack was getting with some type of voltage loss?? Just a guess.

.

?

!

¡¿•?!

pardon

Sorry for the period by itself in my post above. Seems I cannot conclude this thread with just a dot so I will just continue.

I also have dual EP-500s and experienced the same issue when one of my subs developed a problem with the amp and a replacement amp was sent. Please see this thread from several months ago. I was informed that the newer EP500 amplifier was redesigned to allow for greater adjustment on the volume control. Many customers apparently wanted more volume adjustment when coupling the subwoofer with brands other than Axiom, and hence the change. In comparison to the previous EP500 amplifiers, the output will not be the same at the identical positioning of the trim. However, maximum power output should, in theory, remain the same. I think Ian's finding and mine is that the maximum power output is lower compared to amps that had the older, higher-gain DSP programming. The newer subs still produce plenty of power and at the SPL levels that most owners use their subs, I think that the difference in maximum output is not likely to be of any practical importance.

Sorry I haven't been able to get back with some data but thanks very much for the advice. I have to wait until I have the house to myself and then I am going to create detailed calibration curves for each sub - if only to get good volume cross referencing. I agree that differences in maximum output would not be of any practical concern to me. Does anyone think I might blow one of these big boys if I run them at max power with the receiver calibration signal? I think I read somewhere that these things are indestructable?

Thanks
Ian

PS thanks ihifi I knew I had read your posts before.

The DSP keeps the sub in control so yes they are pretty much indestructible.