Please vote for my site! It will open a new window. Help my site reach #1!

Infinite baffle is the simplest type of subwoofer installation. In this type of installation, the woofer(s) is mounted to a baffle which is then mounted to either the rear deck or back seat of the vehicle. the best results are achieved when the trunk area is virtually airtight and isolated from the passenger compartment.

Pros:

• Excellent low frequency extension
• Excellent transient response
• Uses almost no trunk space

• Lower power handling
• Low to medium efficiency

Sealed enclosures are relatively simple to build and install, as all that is required is an airtight box. The larger the sealed enclosure, the more the performance resembles that of an infinite baffle installation.

Pros:

• Very good low frequency extension
• Very good transient response
• High power handling

• Medium efficiency

Vented enclosures use a sealed enclosure with a vent or port in the box which is tuned to resonate at a specific frequency.

Pros:

• Good low frequency extension down to the tuning frequency
• High power handling down to the tuning frequency
• Higher output than sealed enclosures

• Low power handling below the tuning frequency
• Almost no output below the tuning frequency

Sealed Bandpass enclosures enclose both sides of the woofer(s). An airtight enclosure is built around the front and back of the woofer and one chamber is portd to a specific frequency.

Pros:

• High power handling within the operating frequencies
• Very high output within the range of the operating frequencies

• Low power handling beyond the tuning frequency
• Poor to moderate transient response
• Poor low frequency extension

• Paint the inside of your box with latex paint, the paint MUST be latex. Put a nice thick coat on, do not put it on the board which the woofer is mounted though. This will deaden the sound like sound deadener, but is much more inexpensive. Or you can use rubberized under coating, or even that stuff you dip your tool handles in.
• Best to use a real sound deadener though throughout the box. Dynamat, etc...
• Put screws every 1.5" to 2", this will help to reduce box flexing.
• Be sure to make everything is air-tight!! This is the most important. Listen for air leaks and seal them up!
• If you do not want to put circular ports in you can use square, rectangle, or even triangle. Just make sure that the port area and volume are the same. Be sure to compensate in box volume the volume in which your port takes up inside the box!
• Keep from making the front wall(wall where speaker is mounted) of the box parallel to the rear. This will help reduce standing waves within the box and make it sound better and louder!
• Internally brace your subwoofer box. Keep the box as rigid and solid as possible, no flexing!
• Use MDF(Medium Density Fiberboard) to build your box with. Try to stay away from particle board and especially plywood!