I'm putting together a full sound system for my car with Sound Quality in mind for my 03 EM2
I have a -JL 12w6v2-D4,
-a pair of JL 6.5" C2650X ,
-a pair of JL C2690TX 6X9,

Next.....
building my own vented box to JL specs
-JL mono 500/1 amp
-Pioneer DEH-4200UB CD Receiver
-dynomat

I know JL is a little overpriced but I wanted all the speakers to work together. I'm open to ideas for the head unit, but this one looked really good. I just want the best crisp clean clear sound that I can get. Any Ideas or suggestions would be great.

 

 

hahaha. I should of specified that since they are all made by the same company that they would probably be designed to work together. Versus using Polk this, JL that, Alpine This

 

Naw, doesn't go that way. You can mix and match. I don't even have one 1 of the same in any of my setups.

 

ported boxes are capable of sound quality, but you usually have to make many adjustments for port and volume of enclosure before you nail it. that said, a sealed box is much easier to deal with and typically provides a more linear output. i think its a better solution for sound quality. jl says 1.25 cu ft for a sealed box. if you did decide to do sealed, do not build a cube for an enclosure.

 

Thanks for the info. I am still up in the air about the box. At one point in time I was going to build a T-Line box. There are so many different styles of boxes to use. I can not decide if I am going to go ported or sealed now. Many people say to go sealed because of the size of my trunk and for producing high SQ. My problem is that I have never heard a sealed box system before, why don't more people have sealed if it sounds so good.

I'm really good a building stuff so if it has to be exact, there is no problem.

 

Plus, can the sub overheat if the box is sealed. I just don't understand how the voice coil could stay cool with out proper air flow....

 

the sub does not run much cooler in a vented box and power handling goes up in a sealed. besides, the manufacturer thought of temperatures killing it. good equipment is rated conservatively typically to avoid problems. i have 600 rms going to a sub rated for 350 in a sealed box. i beat it relentlessly and have never had a problem in 2 years. just set the gains correctly. JL is overpriced as you said, but it is pretty good equipment.
t-line is great. it is based on the quarter wave design most of the time. good luck with a t-line 12"sub in a trunk though.

 

I heard a 12 inch alpine (the one with the red R) in a ported box at Best Buy and it sounded TERRIBLE...I believe I'm going to build a sealed box now for my JL 12w6v2-D4 sub. Just because the box can be smaller and for good SQ. I am still planning on putting the JL 500/1 amp on it. My only concern that I have now is will it be to quiet in a sealed box.( I heard they are much more quiet then ported) but my goal is still for best SQ....this is my first system in a car and I just want to do it right.

 

It was probably a shitty box design

Type r's aren't known to sound good either

I don't see this would be an sq setup without some kind of processing involved.

Sq is 80% install...

 

what is this "processing" you speak of???

 

also subs in a open room sound different then subs in a car. if you go ported, and i would, i'd tune the box low, around 30Hz or lower. unless you are going to compete in SQ shows, i never really heard that much of a difference between the 2. also most sq cars do not have rear fill ( speakers behind you) other then subs.

 

processing can be an eq, crossover for an active component setup, time alignment, etc.
before you consider that stuff, may i suggest an amplifier for your interior speakers? it is a night and day difference from ANY headunit power. that pioneer makes an honest 12 watts rms a channel at best. feed a good 50-75x4 to your interiors and watch it come to life. more midbass from the front door speakers keeps the sub from sounding like its behind you. and the clarity will be enjoyable too.

 

didn't he mention t-line box which if i remember correctly it's a ported box with a 0hz port freq??

 

That is true about the sub sounding completely different in a car or in a house. I built a compete Klipsch theater room in my house and it is unreal how loud and clear it is. From the drop of a dime to the loudest explosion. I wish Klipsch made car audio but sadly they don't. I have one 8 inch sub from Klipsch that pounds harder then two 10 inch kicker comp subs(watched Iron man and I cracked the silicone surround in the shower). I will be getting an amp for the interior speakers at some point but not for right now. I don't blast music to the max like I do movies so I can wait a little bit on the interior speaker amp. I do want the system to have good mid bass so there is a smooth transition between the high and low frequencies.Pimpwagon you make a very valid point... I cannot count how many times I have heard a bass test on a system and as the frequency dropped from mid bass to sub bass....(nothing, .....nothing........a little better.......TON OF BRICKS!!!)

 

I forgot to say, I will be listening to dubstep, drum and bass, Rap, metal, smooth jazz, classical, and some of the bob marley....should I still go with a sealed box?

 

i would probably say sealed.

 

I would DEFINITELY go with a ported box. Just make sure that you make the port the right size (as specified by manufacturer). They sound so much louder.

 

doesn't matter how loud it is, a ported box isn't always the best all around option.

 

99% of the time it is.

Only time not to go ported is for space reasons

 

you are a clown. stop posting. there are plenty of people running sealed boxes with a single 12" at like 6 cu ft sealed. you obviously dont know why, and im guessing you have never experimented with different boxes in a computer program like winisd.

 

I use winisd daily =D

 

you confuse me. i give up.

 

Give up so quick. Your answer was vague at best. How many 12's really work well in 6 cubes sealed? Winisd isn't the end to all either since it doesn't take transfer function into consideration. What looks good in theory doesn't always work out in a real world application

 

ok you're right. if you spend the hours building, rebuilding, adjusting, then changing some more, you will be able to do as well as a sealed with a ported. most people arent up to that task. also, if you finally do all that sq tuning for that ported box, it might be the slightest bit louder than if it was in a sealed and do it more efficiently. but for most, its not worth it. just do it sealed and throw a little more power at it. and how can you say 99% of the time its better to go ported when so many subs T/S param dictate a sealed box achieving more liner output with that sub. my IDQ is a prime example. its a fine sq sub and is capable of sealed or ported but response always comes out on winisd, ID's spec sheet, and to my ears to the advantage of the sealed box..