Helpful subwoofer-box building sites and software...

www.ajdesigner.com  - Helpful tips and tricks as well as 3 free box-building programs

www.linearteam.dk   - Great Beta, box software for both home and car audio.  This software even includes the specs of

tons of different speakers for both car and home.  It also allows you to input parameters of speakers not in their list.

http://www.diysubwoofers.org/   - this is a great site that gives you more information than you could possibly hope to 

learn about the different kind of boxes and what they are good for, as well as offering forum for help.

http://diyaudiocorner.tripod.com/software.htm  - great site offers a compilation of freeware and shareware for your 

downloading pleasure.  This site offer 10 free box-building programs that you can use to build boxes, compare subwoofers, 

and test how they will perform in a given enclosure.

http://www.pvconsultants.com/audio/boxmodel/subsim.htm  - Software

http://www.ehow.com/how_3681_choose-subwoofers-car.html  - A great site to help you decidewhat type of sub to get.

http://www.pvconsultants.com/audio/eq/boxcircuit.htm  - a very useful excel file/software

http://www.carstereo.com/software.cfm?Car_Audio=Subwoofer%20Box%20Design%20Software - Several different freeware

shareware and demo software titles for download.

http://software.sdecnet.com/boxport/  - great all software for box building, especially vented enclosures!