setting hpf/lpf amp vs hu

[adixon816 10+ year member]

I am getting ready to install my polk pa330 to my PHD coaxials. I can never remember what to use. I want to use hpf right? But is it better to set it from the amp or from the head unit. If I set it from the head unit do I turn the knob all the way up? There is no through option on the amp. My sub will be a sundown sa12 but I'm waiting for the box still. Thanks.

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[bbeljefe]

Using the head unit crossover can be more accurate than figuring out what the actual setting is on an amplifier dial and, they can be changed more easily so I'd use the hu filter.

And yes, your amp does have a bypass. It's the switch that has positions for HP, FULL and LP. Set it to full.

 

[blazian87 10+ year member]

You could set both if you want. I would choose the one with the better filter if you want to just pick one. Like if your amp crossovers are very limiting, then use HPF on your headunit. The higher you go, the more sharper it'll sound and more midbass you'll lose. Be reasonable and find a good median that sounds best to your ears. I would maybe start at 80hz and move it up to see how it sounds.

 

[kramer_212 10+ year member]

i only use the amp crossovers for costumer cars because there all retards, or if its a real basic stereo.

 

[adixon816 10+ year member]

Thanks guys I didn't realize full meant through. My head unit only has ,100/120/150hz as the hpf settings is 100 ok or am I better trying to get 80 off the amp.

 

[CSCStang]

Try both. Dialing in is half the fun lol. Start with the amp on full and use the hu. If you don't like, try the other way.