Loudest 8 inch Subwoofer

I tested three 8 inch subwoofers in an spl and sq settings. I used a jl 1000v1 amp on all the subs and kept it at the same settings. I also used a box that was built to 1.66 cubes and tuned to 37 hertz. I tested all the subwoofers in the same car on the same day to prevent any anomalies. I mounted the meter on the windshield of the car and hooked up a Alpine type r. The song I played was a hertz sweep from 100 hertz to 10 hertz and on the first test the Alpine hit a 137.2 db. Then I hooked up a Sundown audio and on its first test 138.8 db. The last sub I hooked kicker L7 the kicker did the worst and distorted really bad and hit a 134.1 db. All the subs tested well except the kicker which highly surprised me but the best bet from this group would be the Sundown Audio. The Alpine being the cheapest out of the bunch is most likely the best bang for your buck.

One of my friends came by with his digital designs 8 inch and just for grins we metered his sub and it hit a 142.2, which blew all the other subs out of the water and sounded amazing. I believe 8 inch subwoofers are way under rated for their abilities and need a person that will take his time and not expect huge deep bass out of them.