Introduction

Hsu Research is an A/V company selling only online, and which continually produces superb products at affordable prices. Until recently, Hsu sold nothing but subwoofers. I bought one of the original Hsu Research VTF-2 subs, which had incredible performance for a $500 price tag. I’ve since upgraded to the VTF3-HO with Turbocharger. Like the rest of the Hsu’s line, those subs had a ported design.

Now comes Hsu’s first sealed-box subwoofer, the Hsu Research ULS-15. It's one of the first subs to hit the market with wireless connections (RF), and it has four separate channels, so you can have several discrete wireless subwoofer channels if you like (e.g., front left, right, and LFE).   Along with the ULS-15, Hsu also sent their newly redesigned HB-1 Mk 2 bookshelf speakers and HC-1 center channel speaker, for a complete 5.1 system. I had heard good things about the HB-1’s, but never had a chance to audition them in person. Plus, I was very curious to see how Hsu’s experience with subs would translate into full range speakers.