new jl w6

[chetrick87]

Hey I bought a used jl 13w6v2 d4 today for my x. It came in a very small slotted box. The magnet is about an inch from the wall of the box. The sub calls for 1.6 c ft of air in a ported enclosure. Is it ok to do more? In my experience my subs always got louder when I got a bigger box. I just had a 15" L5 in there. I'm sending 750 rms to the jl which is what it calls for.

 

[DjDom]

You can always put it in a bigger box, doesn't mean that it will get louder, it might.
The recommendations from manufacturers are usually the minimum size, and the size at which the sub best performs.
If you've got the room for a bigger box, go for it.

 

[chetrick87]

Wel the box it's in now is way to small. And it's falling apart with air leaking out. Would a bad box make thats too small make the sub hit bad? When it's loud and the bass hits certain notes it makes a bad noise. The sub is smooth when I push on it. I can't find my multimeter to test it. I'm getting a box today for one 12 all I have to do is sand it down so the 13 fits in there. I hope it sounds good.

 

[chetrick87]

When the bass hits my amp has a light that blinks red and says clipping.

 

[DjDom]

Sounds to me like it's not tuned properly and you're sending it too much power.

I would swap the box if it's falling apart. For a 13, I'd recommend a ported box.
Once you get that, tune the sub to 40 Hz, and ensure your amp is not sending out way too much power for the subwoofer.
The easy way to tune a sub is to play a 40 Hz frequency on your radio, with the volume at about 75%, then crank the gain up on the amp until the subwoofer no longer sounds like it's hitting 40 Hz. It's a noticeable change in sound.

 

[chetrick87]

Well the jl calls for 750 rms and I thought thwyre known for handling more power? I'm actually getting a box right now for it. My amp puts out 1200 at 1 ohm and 750 at 2 ohms. So I wired the sub to work at 2 ohms. It makes the noise but it doesn't seem like it's really being pushed that hard because it's not that loud. I have a pioneer in dash DVD player. I have my iPod going through the usb and for some reason And for some reason when I leave my truck on and get out the iPod disconnects. It makes no sense at all.

 

[DjDom]

Well the jl calls for 750 rms and I thought thwyre known for handling more power? I'm actually getting a box right now for it. My amp puts out 1200 at 1 ohm and 750 at 2 ohms. So I wired the sub to work at 2 ohms. It makes the noise but it doesn't seem like it's really being pushed that hard because it's not that loud. I have a pioneer in dash DVD player. I have my iPod going through the usb and for some reason And for some reason when I leave my truck on and get out the iPod disconnects. It makes no sense at all.

Your amp doesn't put out 1200 RMS at 1 ohm, those would be the peak ratings.
Clipping the amp, in simplest terms, means that the amp is trying to send out more power than it is able to. If the sub is 750 watts RMS, and the amp puts out 750 watts peak, the amp is underpowered for the sub.
If you want to get the best performance out of the sub, you'd want an amp that puts out about the same watts RMS. Somewhere around 600-700 would be great for a sub like that.

 

[chetrick87]

I could've swore it was the rms. It's a concept cc-d1200. I got a box for a twelve but I have to make the hole larger for my odd size sub.

 

[DjDom]

Hmm, seems like it is the RMS, but most amps don't put out their RMS power if it's that high.
If it's not wired with 0/1 gauge wire, you're not getting the most out of it.
I do assume it's the box though. Why not try making your own? Not too hard.

 

[chetrick87]

I bought a big box for one twelve. I need a new blade for my saw so I can make the hole bigger. Then have to sand it down and I'll be good to go.

 

[DjDom]

I bought a big box for one twelve. I need a new blade for my saw so I can make the hole bigger. Then have to sand it down and I'll be good to go.

Good luck, then tune the amp as I said and it should sound good.

 

[chetrick87]

I'll update. Next is replacing the front speakers. I have an old set of infinity perfect component set 6x9s. Or a jbl 6.5 component set. Sucks neither will fit because they're good sets even though they're old.

 

[DjDom]

I'll update. Next is replacing the front speakers. I have an old set of infinity perfect component set 6x9s. Or a jbl 6.5 component set. Sucks neither will fit because they're good sets even though they're old.

The 6x9s may squeeze in..
The 6.5s will fit with an adapter plate.

 

[chetrick87]

The sub pounds now. I ended up getting a box for a twelve and making the hole bigger. Then I purchased a hifonics Brutus 1200 to get rid of that old concept amp. Pretty happy with the setup. I might get a new box built just for that sub though. My buddy has a dd and a hifonics 1600 and I have him beat

 

[chetrick87]

I'm sending 900 rms at 2 ohms. The sub calls for 750 rms and is taking the 900 like a champ

 

[DjDom]

Nice. Good to know everything worked out.

 

[ford freak]

Sounds to me like it's not tuned properly and you're sending it too much power.

I would swap the box if it's falling apart. For a 13, I'd recommend a ported box.
Once you get that, tune the sub to 40 Hz, and ensure your amp is not sending out way too much power for the subwoofer.
The easy way to tune a sub is to play a 40 Hz frequency on your radio, with the volume at about 75%, then crank the gain up on the amp until the subwoofer no longer sounds like it's hitting 40 Hz. It's a noticeable change in sound.

I have no clue where you heard something like that but it is about the craziest thing I have ever heard. You're getting gain and enclosure tuning confused.

It sounds to me like the enclosure is most certainly too small. build a new one exactly like JL has on their site. use the above method to a certain extent to set the amp gain properly. Except you don't need a 40 hz tone. Start as mentioned at about 3/4 of the hu volume playing a bass song. Start with the gain turned all the way down and turn it up until it's either loud enough to integrate with your front stage, or until you start to hear distortion or the clipping light stays pretty much constantly on. then back off the gain until the distortion goes away and / or you only have the clipping light flicker.

The JL W6 is a fantastic driver. I have owned several over the yrs. I much more prefer them in a sealed enclosure. Just my taste for them. If you really want ported the JL site has a pretty specific diagram that will work rather well or you could play around with this site. It's not exact but it will get you close.

http://www.reaudio.com/box.php

 

[chetrick87]

http://www.reaudio.com/box.php[/url]

I got it in a ported box but it's not a perfect box. I'm not 100% sattisfied yet so I'm going to order a new box soon. I have heard before that they sound good in sealed box. What kind of music do you listen to? I listen to mainly rap. And usually skip rock songs I like because it sounds like **** or the bass is too low.

 

[DjDom]

I have no clue where you heard something like that but it is about the craziest thing I have ever heard. You're getting gain and enclosure tuning confused.

I used the word and, not or. I know the difference between the two. The OP stated that the sub didn't sound right and it was in bad box. I gave him steps to adjust the gain and mentioned that the enclosure was not the right one.

 

[ford freak]

I got it in a ported box but it's not a perfect box. I'm not 100% sattisfied yet so I'm going to order a new box soon. I have heard before that they sound good in sealed box. What kind of music do you listen to? I listen to mainly rap. And usually skip rock songs I like because it sounds like **** or the bass is too low.

Ported is ok if set up correctly. You should really have a subsonic filter set just below the tuning of the enclosure to prevent the sub from unloading. that's probably what's happening.

The type of music you listen to shouldn't really dictate the type of box you put a sub in. The sub itself should dictate the box. A sealed box will peak a bit higher than ported and it will be easier to tame the peak. And you don't need a subsonic filter. With ported you gain efficiency but there are several things you need to do to get a flat response. You need a subsonic filter as mentioned just to protect the driver. you also need some good eq capability to tame the peak which will be bigger than sealed. The other difference can be integrating the bass with your front stage. I have my icon ported and tuned to 32 hz. It doesn't like to play above about 60 hz. If I didn't have a front stage that can play down that low I would have a problem. sealed tends to sound better when crossed higher making integration with your mids a bit easier.