Disappointed in sealed boxes

[Brad92]

Hey guys, I am new here but have installed several systems.

I have a 02 GMC Sierra single cab and up until today, I had a MTX 10 in a slot ported box powered by my Kenwood mono amp at 300w RMS. I just installed 2 Kicker Comp 12's in sealed 1 cu ft. boxes. I went with sealed boxes for the lack of space I have and I thought they would sound clean. I am kinda disappointed. They are loud, but they aren't deep at all. All the systems I have installed have been ported, but they have also been in vehicles with alot of room.

Is there anything I can do to get make them sound deeper? I thought about Poly-fill in the boxes.

If I can't get it to work, I'll probably just send em back and go back to my 10. Its not as loud, but it was pretty deep and sounded good.

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[pro-rabbit 5,000+ posts]

What kind of specs on the enclosure. May just be to small causing them to not drop as low as you would like. Poly-fill will help but to be honest it will only add a few hz levels past were they roll off at now.

 

[hispls 5,000+ posts]

What kind of specs on the enclosure. May just be to small causing them to not drop as low as you would like. Poly-fill will help but to be honest it will only add a few hz levels past were they roll off at now.

^^^

This, probably too small a box or wrong woofer for sealed alignment. Keep in mind the port gives you a fair amount of gain down low so you do lose output on a good day.

 

[Brad92]

Trying to look up the box specs right now... I am thinking they might be too small, like y'all said. I don't know how I could go bigger though, since I have pretty much no room as of right now.

EDIT: looking at other sealed truck boxes online, they range from .8 to 1.1. I don't see how .1 cu ft would make a that big of a difference

 

[destined2race 10+ year member]

do you have the box that fires up or down to the floor?

 

[05trailblazer 10+ year member]

comps mayb want bigger enclosure (size varies diff impact)

 

[Robert 2001 10+ year member]

Are u using said 300 watts to push both these subs? They will prob take 500 to the pair. Porting seems to make a huge difference on the regular comps. Had 2 10s comp4 ohm sealed a freind had same subs same wattage amp but would outsound the sealed enclosure on all notes.

 

[dumple 5,000+ posts]

gear used? my may gets low in my sealed box

 

[whitedragon551 5,000+ posts]

Ive got money on the prefabs not being sealed all the way, wrong size boxes, and lack of power.

 

[pro-rabbit 5,000+ posts]

Ive got money on the prefabs not being sealed all the way, wrong size boxes, and lack of power.

I got money that says you just covered about all issues it can be lol.

 

[Brad92]

My amp is 300 Watts at 4 ohms and 500 at 2.

I feel pretty retarded... I had been messing with the amp trying to tune it and couldn't figure out why the filter was acting weird. I went to the settings in my head unit and it had reverted to a 200 Hz filter setting for the bass. I put it at 50 and these hit hard! Definitely deeper than my 10 and my buddy's 2 10's in a big ported box. Thanks for the help guys, and sorry I wasted your time on such a stupid issue.

Now I just have to figure out how to keep my subs from falling forward when I move the seat up. GM has this big hump in the rear of the cab.

 

[whitedragon551 5,000+ posts]

I got money that says you just covered about all issues it can be lol.

Im still willing to bet the tuning is off on the amp as well.

 

[Brad92]

I'm sure it is. Usually takes me a few days to get it all exactly how I want it.

 

[whitedragon551 5,000+ posts]

I'm sure it is. Usually takes me a few days to get it all exactly how I want it.

I was referring to gain settings and bass boost.

 

[Brad92]

I don't usually use bass boost. I set the gain the way I was taught by turning the system up to around 3/4 volume and then slowly increasing gain until just before it distorts.