why the hell would anyone ever want a low pass filter at 30Hz. So you dont want 30-70Hz, but you want 30 and below? You do reallize you'd be losing almost your entire sub bass region? im very curious as to what the goal behind this idea was.
yea why would you only want to play fq's below 30hz that makes no sence at all. and the mid ranges wont even play at all pretty much or the tweets and hardly the sub.
you set the LPF at say....80hz. that means anyfreq. above 80hz...is blocked out. it plays 80-0hz.
and lets sat your box is tuned to 35hz. you then want to set your SS to say....30hz. so...any frequency below 30hhz is blocked out(rolled off) so your sub doesn't play freq. that much below tuning to avoid your sub from bottoming out.
Yes, that's exactly right except if your LPF is set at 80 Hz, it won't cut off any frequency above that. It just phases it out. So if your crossover is a 6 db per octave crossover, then the volume of the frequencies above 80 hz will start to be lowered at that rate.
WOW look at this sh!t people finally learning this stuff, lol. Now on you HPF or subsonic you want a steeper rolloff, say 18db/octave to helop eliminate any unwanted"bad frequencies" caused by recording errors or even static. IMO the higher you set you LPF the steeper you want the cutoff because you don't really want a particular sub going to high. This also depends on your size/type/brand of sub. I have a single 15 so I prefer to keep it tight by using frequencies from 25-65 hz, 12's and 10's should be higher. Sure is nice to see people who can talk the sh!t, KEEP IT UP! Polo..
A post where people actually got sh!t right, lol. I remember I posted this answer a while back when people kept getting there fricken HPF/LPF mixed up was pretty hilarious, really. Now I see some people actually retaining the right answers in there memory instead of making sh!t up, lol...