I had a single 12” in a “bypass” box. The speaker was in the center with a plexiglass window in front. There were 2 2” ports on the top at each back quarter. Sounded so nice. That was 20 years ago. I don’t know what they have now, but that gave a tight bass. It didn’t boom too easy. What type of music to you listen too? I was rocking everything but country.