So, you pulled a score like that with a stock alt and 1000 watts RMS amp? Wow.My Mustang is running a stock alternator with Saleen under drive pullies...so my voltage stays low...I only have 2 runs of 4g going back one pos and one neg since its a unibody...the front battery at the time was a Batcap 2000 and the cables fed a 2nd Batcap 2000 in the rear...with more voltage and stronger batteries I could've easily seen 153's...if i built it strictly for SPL with voltage it wouldve been mid 154's...which wouldve been nice in a trunk ...i ran the DD M4 and the same box and sub in a spl setup in my Steeda Focus and it did a 153 flat just wired to a battery in the trunk...so 12.6v's...
What 12 inch sub do you think would like a 2.5 cubes box @ 25 hz and 800 - 1000 watts? My JBL is pretty loud for what it is, maybe like 135-137 dbs or so. What would outdo the JBL in a direct drop in?
Edit: I would like a low Fs and moderate Xmax