Quote Originally Posted by blakgtp View Post
the ported box was from a friend it was designed for the alpine type R 12"
Then if you put any other speaker in it isn't "tuned" for 27hz anymore. Placing his exact setup in your vehicle doesn't guarantee that it will sound the same either.

I think the type R is an all around decent sub though. Very hard to go wrong if you want a jack of all master of none. It's what I tell most people to grab if they want cleand and loud on the cheap.

The sound characteristics of your sub have a lot to do with your mids and tweeters.