5.1 Tube Home Theater – Subwoofer
Originally I planned on building an integrated amp and subwoofer, and I even built the enclosure. But a few things happened that made me rethink that plan… My living room layout and furniture changed, making me realize how large and impractical the size and location of the sub would be. The preamp I ended up with didn’t put out as much voltage swing as I originally expected. The subwoofer I intended on using fell off a 6ft shelf onto a concrete floor, bending the frame possibly beyond repair. And some testing indicated that the speaker/cabinet resonance was likely to cause...