I looking to upgrade my system... I kinda want a system that has really heavy base "deep". So I was wondering what would be best... I already have two 12" W6's so I was going to get a third or get 2 18" W3's... What should I do?

 

Personally, I think you will be really disappointed with the 18"s, so I'd say get one or two more W6's... Are you deaf yet already?

 

What is your current enclosure tuned to?

 

I couldn't imagine two twelves NOT being enough...
that's already almost a kilowatt of RMS power, yikes.
i'd stick with the 12" IMO... like tha above said it can be the box that fixes it

 

Yes!... lol I think that the box is tuned to 35 hz.

 

A guy at my school has 4 12" W3's and they are gross... I can only imagine 4 12" W6's...

 

get another 12" w6 and free air them in the trunk after sealing it well, just an idea, don't know if it can be done

 

That'd be cool, but would take a helluva' lotta effort and require complete forfeiture of your trunk...

 

Try tuning lower and if your enclosure sizing isn't near the max size for the W6v2 at the present (you haven't mentioned enclosure size) you may consider making it a bit bigger also. You may give up some accuracy but it may make your response curve a bit fatter.

I would recommend against getting a third W6v2. For starters getting a third one with all three ported in a proper sized enclosure for the response you want is going to be difficult and second, there is far FAR better options available for you. The W6v2 is a fantastic sounding driver that has decent output abilities. A low-end powerhouse it is not as there are far superior drivers to use in this desire.

 

If you are running your 12W6s in this box with 1KW of power in a Sunfire, you have enough bass already....

A new box will make a substantial difference in the sound....and cost less than new or larger subs + a new box for them.

Since you're in the GTA, I would suggest going here for a better box. Lee has been using JL for years, and should be able to do a better job than the "factory spec" box you have now.

HTH