first off I ran both of them ported and I do not like the peak of a ported box but was just itching for a louder set up and it did it. It was just the sounds fed to the woofers came out sounding more like loud noises then music. It was better sounded than lots of retarded spl setups but still not like ID or JL but I was not expecting sq so I was fine with it until I got bored of it. they get loud and sound decent for spl woofers but for my car I am back to 2 10 inch icons to see if I like those. They are sealed in a smallish box and they do the job. I know Fi build the icons and they sound fine with a decent output, much less then a Bl on the same juice but way more musical.