ralimore

Shorter port will be a good thing, the box is going to be shallow relative to its WxH.

Split airspace...got it

Thats what I was assuming but since this place exists I wanted to get verification. Thanks! Next step, pull all the trim and seats out of the back and get actual measurements. That and whatever I decide to use to deaden the back of the cab with..

So, does each sub "see" half of the airspace or do they act like there in the box by themselves. Will each sub see 6 or 12 cubes?

lol!!! That wood is hard as rock and will have no flex from what a subwoofer can produce. Those barrels can hold several 100 psi of pressure. As a joke we used a fresh from the distillery one for a compressor tank. Thing actually held 140 psi for months. The fiberglass is a good Idea for another reason though. The older the barrel gets once it has been drained the joints will begin to separate.;It is a tiny bit but it loosens the structural integrity of the barrel. I would suggest you seal the inside with fiberglass and if you do bother with braces, make them push the staves out towards the steel bands. As dense as those staves are they use to make those barrels I bet that its going to be one hell of a solid box.

Pull out the charging port, trace where it grounds. Replace the ground and relocate it. I had to do this on my peterbuilt. When I charged my ipod it had some nasty electrical noise it fed in. Moving the ground helped......in the end I bought another auxiliary outlet at Walmart and wired it direct to the battery with a fuse. That solved all the noise. Your issue is most likely caused because yours runs to your fuse box where all the electrical in your car gets routed. That is where the unshielded electrical noise comes from. Rewire your current one or add a new one. There about 10th bucks at Walmart and you can mount them anywhere.

In every single box I have built in the past each sub has had its own airspace sealed off from other subs by an internal wall. I admit I am way out of date on enclosure theory. That being said, I have seen and heard several nice systems lately and some have subs sharing airspace in the box. Now comes the questions part. When 2 subs share the same air(for example a 6cu box with 2 subs in it) does each sub act like its in 1/2 the airspace or does it act like one sub in the whole airspace? If 2 subs share an airspace do they fight against each other or act like one big sub? What are the cons/pros to open chambers as opposed to each sub in its own? I am building a box/wall in an 08 nissan frontier kingcab and am still playing with design as I try to maximize airspace and not have to move my front seats up. If I build it with seperate chambers sealed off from each other inside the box It will change how I brace for flex using the center as a main brace. If I leave the inside open (except for bracing) then how do I figure volume to correctly port? 1/2 the airspace per sub? I really dont want to do as I have in the past with boxes and keep pulling them out and remaking them to get what I want. This needs to be a one time get it right. Retuning will not be a problem as I plan to either make a drop in or use aeros, so I just need to get the enclosure built right first. Planning on 2 RE sx 18s. I guess what I really need to know is seperate or shared airspace in the 12cu enclosure.

It's an08. I had a 92 kingcab back in 93 I had 4 15 Orion dvc in. Sealed in the biggest box I could cram in it. Love the was subs sound walled or in a truck cabin.

18s it is then. Gonna be fun trying to figure airspace with all the odd angles to max out my box.

Was tired last night. The 18s list as sx.

The sx 15s I have are 4 years old....It has taken me that long to actually start to build a system. Working on electrical while Im deciding which subs I am going to use. Im leaning towards the 18s also....just because damn they look huge! But I will bow down to people who know a little more than me about it. Hell last system I built was in 92 and I had 4 15" orion dvc's in a 92 toyota kingcab with 2 punch 200 dsm running them. Been a long Bass-less life since then.

I have been planning on running 2 re sx 15s in the back of my 08 frontier. I have a neighbor willing to trade me his 2 still in box re sx 18s for my 15s. Today I actually got out in the truck and did some measuring and made some templates to see how big a box I could fit without odd corners and cutouts. i came out with a box running at approx 12.5 cube. Not excluding displacement of ports or subs. How would a re sxx18 sound with only 6cu per woofer? Planning on running 2 6" aero ports per sub. Got 2 SoundStream dtr-1700s for the subs for now. Go with the 18s or go with the 15s and why. I dont need to know about other brands or sizes of subs. These are my options and I will be going with one or the other. On a side note, I would like to pull off a hairtrick one day..

If your doing a window acrylic of almost any brand will do. Anything above 3/8" is fine for smaller windows. You may go to 1/2" or 3/4" for larger ones. Hell I got a 14"x36" window of 1/2" holding back 400 gallons of water in a fiberglass aquarium. As long as your not using the cheap plexiglass you will be fine. Just make sure you attach it firmly.

Hi, I'm Ralf. Been out of car audio since 1993. Found this site while researching all the updates in systems. Bass-Head from birth. Looking to drop some serious bass in a 08 nissan frontier kingcab. I dont get much time to work on my system so it may take me another year to get what I want. Love the info on this site!