Box Building

SEALED

 

PROS & CONS

SEALED: Advantages

1. Simple to build, no real thinking involved.Hard to screw up

2. Best phase and time response.

 

SEALED: Disadvantages

1. Loose typically 3 – 6dB of output versus vented

2. You’ll need 6dB more power to get to the same point in output as a vented enclosure. Or like going from a 500 watt amplifier to a 2,000 watt amplifier. And the subsequent additional current draw. 500 watts is about 58 amperes, versus 2,000 watts which is 233 amperes (full power current draw)

VENTED

 

PROS & CONS

VENTED: Advantages

   1. Gain 3-6dB of output over sealed. Or
       roughly the equivalent of having a 500
       watt amp “act” like its 2,000 watts.
       Vented Enclosure is giving you FREE energy
   2. Better transient response.
   3. Less current draw because you can utilize 
       a smaller amplifier.

 VENTED: Disadvantages

   1. Much harder to design and build. Really
       need a modeling program to do that.
       We recommend WinISDPro. Which is
       FREE!    Go to this URL:

       http://www.linearteam.org/download/winisdpro/winisdalpha.exe         

   2. Typically about double the size of a
       sealed enclosure. But still relatively small
       in the scheme of things.
   3.  If you design the box incorrectly (in other
       words mistune it, for example tune below
       Fs of driver {highly discouraged}) it can
       damage the woofer