| Re: Hello everybody!
Hi Brad,
Normally a DIY sub does not need a crossover, instead you use the "Subwoofer Output" line level output that most AVRs have. That goes to a power amplifier of some type. Many of us go for the most bang for the buck by using a pro amp (the Behringer EP2500 is an example of one). Designing the sub is a science but programs such as WinISD or Unibox make it easier to get desired results.
The BFD is not really used by us as a crossover -- rather we use its parametric equalizer filters to smooth out (cut) the peaks in room measured bass frequencies. Using Room Eq Wizard with a RS SPL meter connected to a PC soundcard line level input enables us to compute the setup for the BFD's filters. The result is a smoother and more accurate bass response.
DIY a center channel with its needed crossovers is fairly involved. Perhaps you should try building to an existing plan such as those shown in the Parts Express website and catalogs.
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