I've read a lot of posts saying the Carr Ramber with 1 x 12" kingpin speaker is a great sounding amp. But I've also read a lot of posts that say the low end gets flabby or farty sounding. So what gives? Does it start to get flabby at certain volumes but not at others? How can it be so great if it gets flabby? I'm very interested in getting one of these amps. thanks.