how can i hit better lows

[cvjp417 10+ year member]

so i got 2 fi bl 15s fl in the recommened box size, and i got the right ports. well i had my friend tune the amp and headunit and it just dont hit any lows. like the subs dont move on any lows, there powered by a sundown 3000d. is there something i can do to the amp?

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[Louisiana_CRX 5,000+ posts]

jack the bass boost upto 6db

 

[t1990le 10+ year member]

Make sure the low pass filter on the amp is tuned just below the tuning of the box.

 

[Slim_Shady]

so i got 2 fi bl 15s fl in the recommened box size, and i got the right ports. well i had my friend tune the amp and headunit and it just dont hit any lows. like the subs dont move on any lows, there powered by a sundown 3000d. is there something i can do to the amp?

I think that should read "I got the right amp and I had my friend tune the ports"

Are you dyslexic or are there more serious issues we should be concerned about?

 

[RAM_Designs 5,000+ posts]

Make sure the low pass filter on the amp is tuned just below the tuning of the box.

No. A low pass filter is set a certain way to allow the frequencies BELOW the filter to be played. A LPF is generally set around 60-80hz for subs, depending on you install and what you prefer. I think you're confusing the LPF with the subsonic filter, which is just a HPF used to eliminate tones too far below box tuning.

 

[Slim_Shady]

No. A low pass filter is set a certain way to allow the frequencies BELOW the filter to be played. A LPF is generally set around 60-80hz for subs, depending on you install and what you prefer. I think you're confusing the LPF with the subsonic filter, which is just a HPF used to eliminate tones too far below box tuning.

I'm pretty sure that's what he meant

 

[cvjp417 10+ year member]

yeah like on songs that are supposed to be low and hit hard the subs barley move

 

[mazdakid 5,000+ posts]

take a picture of the amp settings.

what ports do you have that are the right ports?

 

[Slim_Shady]

So you got all that high end gear but you can't tune a box or set an amp...

TROLL

 

[SSS 18734 5,000+ posts]

Definitely sounds like a subsonic filter problem either on your head unit or your amplifier.

 

[Enellz 10+ year member]

So you got all that high end gear but you can't tune a box or set an amp...

TROLL

X2 on a major way. My question is if your brought this stuff new you paid more than a grand but you didn't read on how to probally set the amp. Take a pic of the settings

 

[cvjp417 10+ year member]

nah i just really dont want to srew anything up, me and my friend tuned the amp with 60hz test tone and the gain is set perfect. its just that one problem

 

[anj46907 10+ year member]

my 18'' bls get pretty low you need to check those settings if you cant hit a low not on a bl. your doing something wrong.

 

[brian84corvette 10+ year member]

possible that the rca running to the headunit, are not pluged in to the sub output conects?

and they are on the high level rca's ?

or check headunit for low cutoff settings. it might be that.

actually - if you wana ghetto rig just to check, walmart sells rca cable that plugs in to I pod

and you can run your sub / amp right off I pod, bypassing the hu altogether to test sounds / lows.

that would eliminate your hu as a problem right there.

 

[cvjp417 10+ year member]

wow i feel like retard, so im playing wit the headunit and i see that the hpf was set to 63hrz and i shut it off and now im hitting lows, sorry i wasted all ur time