posted
I am designing a box for 4 12" kv.2 subs in my s10 extended cab, and it is going to require every single inch of space behind the seats. I am curious as to how I should face the subs. One would think facing them backwards would be the best way to go, as its usually the best way to go in an suv. It is said that the farther the bass waves travel, the louder they will be. Also, using the back wall as a reflector for the waves would make one think that it would be louder this way. However, im wondering if in such an enclosed space, and only being able to mount the subs a matter of a couple inches from the back wall would still be beneficial, and if it would cause cancellation being so close to the back wall. Would it be better to just point them upward? This would cosmetically look better, and make the box easier to fit and build, as well as give me a couple extra inches to work with. I just want to be sure that this will create just as much bass as pointing them to the back. Which way would be best?
Posts: 23 | From: MD | Registered: Sep 2008
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posted
I would do subs up, port up. but some people have had good luck with subs forward port up on driver's side. mind you this was a ranger
-------------------- World Record-Loudest SPL in my driveway Team Powermaster/XS-Power Hifonics Amps, Kicker subs-The way it should be....all were Stolen from me...boo hoo Zensky....World Domination at It's Finest www.zensky.com Posts: 3735 | From: Columbus, OH - formerly FL | Registered: Oct 2003
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posted
im not porting, they will be sealed. There isnt even close to enough space to port them. Pointing them forward would probably be the worst way to go, as they would be firing right on the seats. There wouldnt be enough room to do it this way either.
Posts: 23 | From: MD | Registered: Sep 2008
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posted
I want to note that my space is limited by how far back I lay my seats too. I like my seats laid back a bit, and I have the seats pushed back pretty far cus I have rather long legs. I have about 4 cubic feet of total space for the box. So im limited to a cubic foot per sub, and that is about what the kv.2's require.
Posts: 23 | From: MD | Registered: Sep 2008
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posted
in that case, down fire...down fire...down fire. that will probably allow you to get more volume, without losing seat tilt. if you can, give yourself at least 3" of clearance for loading and airflow below the subs. if you could get 6.2cf, you could do 2-6" or 4-4" aeroports coming out the driver's side running horizontally, gaining you a few more db's. could come out really sweet,,,and you'd have room for the port length running across the car.
-------------------- World Record-Loudest SPL in my driveway Team Powermaster/XS-Power Hifonics Amps, Kicker subs-The way it should be....all were Stolen from me...boo hoo Zensky....World Domination at It's Finest www.zensky.com Posts: 3735 | From: Columbus, OH - formerly FL | Registered: Oct 2003
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posted
I was surprised seeing how high you have the subs mounted in that install of yours. I have my seats much much further back than that tho, there is almost no space between the headrest and the back wall with the way I sit my seats, so theres no way I could use that space behind there like that. It seems you guys are incredibly set on the whole ported thing, almost like its supposed to be a given that I go ported. Is porting that much better than sealed? I should have clarified in my first post that I have no plans on porting, I am trying to stay sealed. My cabin space is very small, which means not much low frequency cabin gain. With sealed, the subs will get a bit lower, and have a flatter curve which is what I am aiming for, and with the little amount of space I have and my inexperience at building boxes, id much rather just skip the hassle and go sealed.
With that said, I like the idea of downfiring. It is something to consider, but only if upward firing is going to hit or sound like ****. I absolutely prefer pointing them upward because the installation and possible removal of the box and subs would be much MUCH easier this way. This box is going to be extremely heavy with all 4 subs in it. So that is what I was getting at with my question. Im hoping someone has experience with sealed enclosures in these small trucks and will know for a fact whether or not it will make much of a difference pointing them up versus backward or even versus downfiring. Space isnt really the issue, I have 4 cubic feet and that is enough for what I am doing. sound and spl is the issue.
Posts: 23 | From: MD | Registered: Sep 2008
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I guess I should note that I dont plan on keeping this truck all that long, and thats why ease of removal is an issue. Just a simple sealed box is what im going for, nothing too fancy for a vehicle I wont have that long.
Posts: 23 | From: MD | Registered: Sep 2008
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posted
just avoid firing them backwards. won't sound the great.
-------------------- World Record-Loudest SPL in my driveway Team Powermaster/XS-Power Hifonics Amps, Kicker subs-The way it should be....all were Stolen from me...boo hoo Zensky....World Domination at It's Finest www.zensky.com Posts: 3735 | From: Columbus, OH - formerly FL | Registered: Oct 2003
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posted
why wouldnt it sound that good? Because of the thin metal on the back wall? I would raamatt the wall with a couple layers if I were to fire them backwards, but im guessing thats what you mean. if I fire them up, I will only use a single layer on the back wall. The biggest problem I will have is all the plastic paneling rattling. I currently have two type-r's getting about 500 watts a piece firing backwards and every single piece of plastic in the rear and the doorpanels all rattle badly, and I need to find a way to stop this rattling.
Posts: 23 | From: MD | Registered: Sep 2008
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Backard may work in an suv but about the only thing facing back did for me and my truck was make for thin sounding bass in the truck and serious lows about 30ft away.
down fire usually hits deeper but at the expense of a smaller box and spl. (you lose box volume by allowing enough air in front of the sub to actually load)
fire up and you are using all the space below the sub for the box.
-------------------- Yes this is my sig, no there is nothing for you to read. Quit looking at me, nothing is going to happen. Stop staring at me, cut it out, leave me alone.... Posts: 3022 | From: AZ | Registered: May 2003
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posted
Thats exactly the response I was looking for. I needed a bit of explanation with the advice so I could understand why. thanks man. I totally understand what you mean by the "thin" sounding bass, because right now I have my subs back firing, and I had the exact same setup in a blazer back firing and the bass isnt nearly as loud or dynamic sounding in the truck. There seems to be a lot less range, and it definitely doesnt get as low. I assumed it was just because of the lack of space, but hopefully firing upward will make a difference.
Posts: 23 | From: MD | Registered: Sep 2008
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posted
I don't understand why new people come on this forum and ask questions. They always argue what we tell them to do. Why the hell do you ask a question if you're not going to use the info we give you, and you're going to go with an idea that you've probably come to a conclusion about using even before you post here. Why ask us when you already know what you want to do? Build your box, fire it back, have it sound like crap, then come here and get the correct way to do it, and be happy.
-------------------- Posts: 1031 | From: North Carolina | Registered: Jan 2008
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posted
wow, I think you should mind your business man, cus you obviously have a hard time reading. I just THANKED the guy and AGREED with him, and I absolutely plan on going upfired, so where the hell r u getting this crap your jibbering about?? If your referring to me saying that I have a backfired setup in my current vehicle, thats because thats the setup I already have. I never ONCE argued with ANYONE on here. Go pick a fight somewhere else with a troller or something.
To clarify what I was saying earlier, I have 2 12" type-r's in the back of my truck with a 1200 watt amp that I pulled out of my old blazer that I totalled, and when I first installed them, I remembered how I had everything pointed backwards in the blazer and it sounded very good and got hella low, and I also read how pointing backwards allows the bass to travel farther creating more spl, and so I assumed I might get a similar effect in the s10. Obviously, I was wrong, and i noticed right away that the bass isnt nearly as loud and doesnt sound as good in the truck, and now that I know better, I will be facing them upwards immediately.
Posts: 23 | From: MD | Registered: Sep 2008
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quote:Originally posted by thebman: wow, I think you should mind your business man, cus you obviously have a hard time reading. I just THANKED the guy and AGREED with him, and I absolutely plan on going upfired, so where the hell r u getting this crap your jibbering about?? If your referring to me saying that I have a backfired setup in my current vehicle, thats because thats the setup I already have. I never ONCE argued with ANYONE on here. Go pick a fight somewhere else with a troller or something.
To clarify what I was saying earlier, I have 2 12" type-r's in the back of my truck with a 1200 watt amp that I pulled out of my old blazer that I totalled, and when I first installed them, I remembered how I had everything pointed backwards in the blazer and it sounded very good and got hella low, and I also read how pointing backwards allows the bass to travel farther creating more spl, and so I assumed I might get a similar effect in the s10. Obviously, I was wrong, and i noticed right away that the bass isnt nearly as loud and doesnt sound as good in the truck, and now that I know better, I will be facing them upwards immediately.
Whatever dude. You were the one bitching about not being able to lean your seats back with the type of enclosures suggested. You also said that it would sound like crap with the subs firing foward into the seat. You are ignorant. You have never even heard a setup like this or you would know that it works perfectly fine. Up firing is the best way to go. I'm not trying to pick a fight either. I'm just sick of all the new members that sign up here and come and ask questions and then don't seem to like the answers that they get. This is an spl forum usually used for questions to make cars ungodly loud. Maybe this could have been answered best by a Circuit City or Best Buy employee.
-------------------- Posts: 1031 | From: North Carolina | Registered: Jan 2008
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posted
When I said that it wouldnt sound good firing into the seats, I meant when facing them forward. I stated that I didnt have the room to fire them forward and that they would be firing right into the back of the seats. Unless I am way off base with what I already know, this would not sound very good. I never argued about upwards firing, I was simply asking if since I have my seats laid back, if firing them upward would affect how the bass hits. I think you must have misunderstood what I was saying.
Posts: 23 | From: MD | Registered: Sep 2008
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posted
thanks for the help from everyone who helped me without the tude. I have decided to fire them upward.
Posts: 23 | From: MD | Registered: Sep 2008
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posted
Your best bet is to make a single test box, try it in every position available that will accomodate the four subs and see which position performs the best with the single and go from there with your setup.
My truck works best rear firing contrary to what many on here think.
Posts: 107 | From: CA | Registered: Jan 2008
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Years ago I did a ford extended with only two L7 twelves ported, everything firing forward. Contrary two what's been said, that thing hurt. The lows were ok at best, but for two twelves it it had alot of punch. The truck was sold well before I picked up a termlab. I wish I could have metered that setup.
-------------------- Yes this is my sig, no there is nothing for you to read. Quit looking at me, nothing is going to happen. Stop staring at me, cut it out, leave me alone.... Posts: 3022 | From: AZ | Registered: May 2003
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posted
picked up a "termlab"? what kind of device is this? also, do they sell a standalone needle clip meter that can be installed in a vehicle? I think it would be handy to have something like this so you can always see if you are clipping a signal.
Posts: 23 | From: MD | Registered: Sep 2008
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-------------------- Yes this is my sig, no there is nothing for you to read. Quit looking at me, nothing is going to happen. Stop staring at me, cut it out, leave me alone.... Posts: 3022 | From: AZ | Registered: May 2003
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