Most people attempt to build a DIY subwoofer enclosure for one of two reasons. They're either looking for a custom design at an affordable price, or they're trying to get a subwoofer in their car ...

I have a PSW10 subwoofer connected to the pre-out of my Pioneer VSX-D08 receiver with an RCA cable. The sub lacks LFE, whatever that is, though the receiver has a setting for it called 'LFE Attenuator ...