I'm running a JL W0 10" rated at 125 w/continuous off of a Sony 4X35 watt amp. I have a pair of 6X9's on it and the sub. I feel like my sub should me louder but it sometimes sounds like it's peaking. Is this because my amp is out of head room, meaning that since I have to turn the sub volume up all the way, the amp is working too hard and making the sub sound like it's "flopping" out? My real question is... should I upgrade my amplifier to one that has more watts or should I up grade the sub? It doesn't seem logical that my sub would be peaking off of 70 watts mono. Tell me what ya think.