Okay guy's Let me tell you what I had before i did this. I have a 15 Inch JL Audio Subwoofer with a 1200 Watt Phoenix Gold Amp with a 4 gauage Amp wire with stock tweeters and stuff.. Okay well I just bought 2 12" inch MTX THunders with box from a friend for $50.00 SO i put them on and added the 15 Inch Sub and put it all on the 1200 Watt Amp. When I turned music on it doesn't even near sound as loud as just as the 15 Inch vibrated hole car now its less power. Because the amp is not stronge enough to power all 3 should I get another amp and Bypass them and will it give more power?

 

i would get another amp.

 

you cant mix subwoofer brands....i tried a jl and a sony and it wouldnt work