I have 2 s15l7s. One box is already ported. I'm now about to build my second box. I have a 1995 Chevy Tahoe . Will it sound jacked up If I make my second box sealed instead of ported?

 

The best answer is: probably.

 

Build the box according to what you listen to music wise, if your listening to hip-hop, rap and electronic style music you definitely want a vented box tuned lower. If you listen to a variety of different styles of music then you probably would want sealed. Then again maybe tune the ported box higher. What is your ported box tuned to? and what do you listen to music wise?

 

One sealed and one ported will sound like crap if they are playing the same set of frequencies, and to separate the sub frequencies in a vehicle environment is pointless, especially when one box, designed properly, will do the job.