I just added two jl audio ten inch subs to my truck and it sounds awesome,, with only one problem, when i crank up the subs,, it causes the back of the seats to flap so much that it creates a vibrating noise,, i can correct this by moving my seat up,, however this is very uncomfortable considering i am six foot six and need lots of space. Any help on reducing this seat vibration would help very much, some of the mouldings in the back seem to vibrate,, but only at extremely high levels,,, so its not immediate that i fix any other vibrations for now,, dont really wish to use dynamat unless thats all there is to do.

~thanx

 

Can you post pics of the box? I'm six foot five, and need all of the leg room I can get. Did the box cause the seat to not be able to extend all of the way back? As you know, it's tough being tall and owning a standard cab pickup!

 

Well,, here's the deal with the boxes,, i'm using two 10W0 jl audio subs,, they rock big time, i custome made the boxes myself to fit in behind the seats,, in doing so yes i can move the seats all the way back, and for that matter, move the back of my chair all the way back as well,, as i said earlier though, the only problem though is the back of the seats flapping against the grill face,, not a big problem though, i think it can be fixed,, just not sure how yet,,, i agree it is tough to be tall and get everything you need, The only drawback i have is that i need to move my passenger side seat forward in order to move the armrest up or down,, its not a big problem at all, cuase after i move the armrest, i can just as easily move the passenger seat all the way back again. My boxes were very easy to build, although i could have went more elaborate, i decided to stick with an easy design cause its important you build a correctly sealed box,, and the easier the design is the easier it is to seal in the end. If you would like i can give anyone the exact dimensions of the box that i used, and even step by step instructions on how to build them. The only one problem for building them on your own is i recomend a previous experience with power tools and well,,, cutting straight lines

~Thanx for the post,, and still any info from anyone on seat flap will be apreciated

 

Unzip the back of the seat and fill it with some foam or fiber fill. You can get it at any good fabric store.

 

Hey Whitetoast, I just had the same problem. Take the grills off and try it. I was so frustrated because I could not figure out a way to fix the problem. So I just thought I would try taking the grills off. You will be suprised. It worked for me.

 

sounds promising,, i'll give it a try,, there's a few bits of pannelling taht i need to fasten down a bit too,, they seem to rattle just enough to annoy me. I dont crank it up all the time, but lets face it,, if you need to feel the bass, then you need to feel the bass

 

I have a JL 10" behind my seat in custom box ... Never had a grill works great no vibration... The seat protects the speaker face..

Doug

 

Whitetoast, What are you pushing your w6s with?

 

PPI is the only brand amp i'll ever purchase,,, you get the best rms wattage and most precise tunning you can buy, mine in particular is a PCX,, and one more thing,, i chose not to get the w6's,, instead i got 2 10w0's they run at 8 ohms,, give deap bass with little need for as much depth as a w6 needs,,, and i'm tall so i had to go for the most space i could handle, all things said,,, i can make my entire truck vibrate, along with my knees, it feels great. i also run two directional tweeters in the front powered by another pcx amp, and an alpine 7873 cd face,, 60wx4 or 27x4 rms, with a sound noise ratio of 108. i wish i didn't need the tweeters, or speakers later on,, but lets face it, the stock system in these trucks is terrible

 

First off you built the box wrong if you built it.

Always try and get the subs as far away from the drivers seat as possible. Not only will this produce cleaner and louder bass, but you can put your seat all the way back against the box.

I have three tens in my truck and there all on the passenger side and in the middle so I can put the seat back with out caring. Bass waves get louder as they travel in the truck also, so by the time they get from the passenger side to you they will be louder. I know its only 3 feet but you can tell. Also if you build the box right the woofers shouldn't hit the seat and make the backs flap. I've never had that probelm with mine.

Seriously move the subs to the passenger side and your hear the difference. How cares what the passenger hears its your truck!

Later

 

the woofers never hit the car seat,, they just make them flap from all the air the send out,, second off,, most of my friends,,, are just about my height, so although i dont care if they have to squeaze in,, i'd rather have it so everybody can fit in. the boxes only have 10.5 inch depth with a 65 degree angle, i use two seperate sealed boxes so that if i ever need to take my L for a trip all i have to do is take one out and stick a bag back there or something, two different boxes require more space cause you can't isobarically load them, but you definately get a deaper bass with the added depth and size,,, of course thats just one opinion,, i'm sure lots of peole have had different experiences. i will take off my grills today to see if that works,, thanks for that advice

 

My passenger seat goes back all the way also, I was just saying that the sound quality is a little different on the passenger side.

How many cubic feet are the boxes.

 

are your air boxes sealed or do they have air hole in them...? which would be better.? I would like to build a box for my truck, but don't know what size i would need for different size speakers.

Brandon

dumb rookie audiophile question.

 

A ported box is going to have to be bigger then a sealed box, but for the same token you can also put less power to a port box and get about the same bass loudness.

A sealed box is going to be allot tighter bass.

Depending on the cubic volume requirements of the sub woofer a 10 inch sub can range from .25 to 1 cubic foot in a sealed box without displacement. Also the smaller the box is the more power you can put to the sub but that doesn't always me its going to be louder.

Just remeber, Small box(minimum cubic voume+displacement)= tight clean bass but you'll need maximum power.

Larger box (maximum cubic volume+displacement)=loud boomer homie G sloppy bass but you can get away with less power.

Later, JOE

 

thanks joe.