amp tuning question

[Bobby322 10+ year member]

On my amp the subsonic only goes to 20hz. Aren't you supposed to set it to the frequency of your box? My box is tuned to 32hz so what do I do?

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[Nut Hair Trick 10+ year member]

Set it 10 below, is what I've heard.

 

[Bobby322 10+ year member]

Ah gotcha. Phase at 180? LPF somewhere around 80? HPF on headunit off?

 

[Nut Hair Trick 10+ year member]

From what I understand, the phase is used if you're running the amp on midbasses in the doors. Since you are running it on subs, I would set it at 0. LPF, depends on your midbass. If you have midbasses in the doors that can go down to 80, I would set the LPF to 80-100. If your midbasses aren't dependable enough to go that low, I would set your sub 100-120 to cover what you're missing out on the midbass. Maybe higher, someone that knows more than me can chime in, but I've never had to cross my subs that high. I have my pioneer 720 prs components HP at 60 on my front stage amp because the midbasses can actually play that low and still sound great. My subs are LP'd around 80 for overlap. I could probably go lower but it just depends on what sounds good to you.

 

[Bobby322 10+ year member]

I don't have anything other than some alpine 6x9s in my doors that aren't on an amp. I want to hit lowwww so wuhat should the lpf be at? I thought phase was supposed to be at 180?

 

[bubbagumper6 5,000+ posts]

No, leave the phase at 0 or off.

I usually set my LPF at around 120-140

And the HPF on your HU is probably for your door speakers, and I would turn that on...

 

[jpexpc 10+ year member]

You need to search what the phase dial is for.