Quote:
Originally Posted by RonRizz
IMHO thats a little too high to cut. you're gonna lose alot of lower midrange, and they will probably sound "tinny". The freq. response of your speakers should be your starting point for considering where to cut, and pretty much any full range speaker will play well below 600hz You will probably be looking at a response of around 125hz with a 3 1/2"..... Your midrange frequencies start at 250hz, which is where I would recommend cutting them. 
By the way, Woofersect has a set of Hertz 3 1/2"s for $99 FYI |
The Polks come with 200hz base blockers and most reviews I have read have said the worked well.
In my 4Runner, I have 3.5" Kappas and went with a higher frequency blocker. In that vehicle, I have coaxials in the door, not components, and the 3.5s are in the dash. Sounds great to my pedestrian ear.