***Problem solved. It was definitely a defective driver. I replaced my 580s with brand new ones. My new ones can't replicate that flabby sound even at higher gain and volume.***
I just bought the HFI-580's. I have only about 10 hours of burn-in. *Now 30 hours*
I'm driving them with my Rockbox Clip+ and E5 amp.
I just installed Rockbox on my Clip+ so now I'm able to boost the bass to insane levels.
I put the "bass" on max gain/but the 60 Hz on 8 dB gain. with the Rockbox EQ and played my bassiest song. I noticed when when I raise the volume up to a certain point, the right side sounds like it's "fluttering" like something is a little loose at certain times when the bass hits the hardest only w/ sub-bass. I've never experienced this before.
But when this happens, the bass is at INSANE quantity that is acheived with Rockbox. On stock firmware, EQ'd to achieve the most bass and the volume on max, this doesn't happen.
The reason why I'm concerned is because it's only on the right side, the left sounds perfectly fine.
Let's say the right side starts doing this at 60%, I raise it up to about 70% or higher and the left side STILL isn't doing this. I try it all the way up to about 75% or so and stop because I start to hear distortion.
Otherwise at lower volume/lower bass gain, both sides sound equal and the bass hits with equal impact from what I can hear.
Edited by MrNurse - 1/29/12 at 1:24pm