Some say it wont, but others say it will. It is a 20% increase in power, which is a lot on paper. All I know is that compared to when I had the single 10 hooked up it is nowhere near as punchy, which is why I was thinking it needs more power. I am really considering upgrading it all, but I have heard that the JBL's are decent quality. I could do a new box, but as stated I have been through that tons of times, and it seems my prefab is sufficient. Wiring, had a GM tech install it, he knows his stuff (so it seems) and I used 4 gauge power and ground, 16 gauge to the speakers. Thanks.