bro I was always into music....just thought my car sounded good and it did but now it sounds even more special with the
recent investments and general knowledge put into it......I can add it onto my likes of biz, sports etc.......
brother as regards tuning and hz of sub box there will be continuous changes so its futile for me to post that over here.....as for specs on the first page of this post I have posted a link to the sub woofer I am running Alpine type R 1223d 600 watts/rms......
and in my pictures the current box I am using is not the first pic but the second one............it is much bigger than the first one......