Getting the most out of new DB 651's

william_04_x
william_04_x Posts: 1
edited November 2010 in Speakers
I have a Polaris RZR and installed a pair of DB 651's in an overhead box I constructed. They are being run off of a Jensen MSR 2107 head unit which claims 50W per channel.

They sound okay a lower levels, but as I turn them up, they start to sound pretty bad.

Do I need an amp?