To the point, do any of you find the single 15" speaker to be "flubby"? I'm in the market for a new amp. I love the SVT CL Heritage but it's just way too much amp for the venues I play. The Heritage B-15 appears to be perfect in size and output. However, I am concerned about the speaker. I'm playing an Am Std J and really love tight AND low frequency capabilities. I don't have the luxury of playing one first hand so I'm at your mercy. Thanks.