Few simple questions

[TheNewbie]

I was messing around on my Uncles headunit, and then on mine.. and had came up with a few questions.

1. What's the HPF and LPF for? Is it for the speakers? Being that there is one on the amp I was a bit puzzled.

2. When you go into "Subwoofer" on my H/U I get the options for a certain hertz, 50-125 I believe, and then what seems to be a subwoofer level on the side. Doesn't say exactly what it is.

Those are the two fairly simple questions I have, for most of you anyways. Any info is appreciated

[Freshman6969]

High Pass Filter(speakers)- sets your h/u freq output to the speakers to cut out anything below that point, Low Pass Filter(for the sub amp) is the oppisite

same thing for the sub control, i usally set that at 80hz, same with the LPF, sub level with essentially turn the volume up to the sub to put it simply or down

[Omega5002]

LPF is for cutting higher frequencies, like when you want your sub to play up to only 63 hz, after 63hz, it slopes down

HPF is the opposite

I believe the options are the LPF for your subwoofer.

Edit: Got ninja-ed lol

[TheNewbie]

I know at they are hpf and LPF but why is one on the heady it and then again on the amp? Is the head units one for the speakers? And if the LPF is the same on your amp as your deck why is it at 80? Maybe I'm confusing myself here lol thanks guys

[01ExSport]

For ease of use mainly.

Some people turn their LPF/HPF's on their amp wide open, and set it with their headunit so they don't have to get out and tune the amp to adjust a few settings.

Plus they're most likely more accurate on a H/U unless you don't have a CC-1.