question regarding a 12" sub at 500w rms

[matt3D 10+ year member]

Hello, I currently have a kenwood kfc-xw1202dvc that is a dual two ohm sub running at 4 ohms in series on a Eclipse XA1200. (At 4 ohms the amp puts out 350w rms and at 2ohms it puts out 500w rms and 600w max.) I have the sub in a 2.1cu^3 box that I made with 3/4 mdf and has a flared 3" port that I tuned to 30hz. I like the deep sounds that I get from the sub/box combination but it only gets loud when the volume is at half on the head unit and it gets pretty loud at 3/4 volume. Should I put some more wood in there to make the box a little smaller to get more spl? (I know I would have to adjust the port as well, which might be a pain in the a$$ //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif) Basically speaking, I would like more output throughout the volume range of my head unit. Would it be worth it to buy a well made sub that is in a dual four ohm configuration so I can run it in parallel at 2 ohms? How much louder can I expect it to be? I am running 4ga wire from the battery to a distribution block and then one side goes to the sub amp and the other goes to a Memphis amp that powers my component speakers for the front doors. I would like to buy the sub from a company like ascendant audio, sun down audio, fi, etc instead of alpine, mtx, kicker, etc. I was thinking that the Ascendant Audio Arsenal 12" subwoofer would be a good choice since they have it in a dual 4 ohm configuration and it requires 500w rms. Or what about a sundown audio SA Series 12? However, it runs at 600w rms, so I would be under powering it, but it should still be safe to run at 500w rms right?

Here is a picture of the sub amp, in this pic its not fully wired up yet...

Thanks for your time and have a great day,

Matt

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[subzero 5,000+ posts]

It shouldnt get louder by taking away box vloume. That is probly the recomended volume for your sub? Your best option is to get a better amp. make sure it can do 600 @ 4ohms. 1 ohm stable would be nice too.

 

[matt3D 10+ year member]

Yes, that is the recommended volume for the sub but it's on the larger side. So do you think it wouldn't be worth it if I used the same amp and got a new sub that I could run at 500w?