Few audio companies with a lineage as revered as Infinity Systems are able to transition to the mainstream with their high-end principles intact. But Infinity certainly makes a case with its updated Beta series, a line that ranges from the Beta 10 bookshelf monitors ($165 each) to the Beta 50 tower speakers reviewed here. At $998 a pair, the Infinity Beta 50s aren't cheap, but they are a treat to listen to--for both movies and music. The Infinity Beta 50 is a big speaker--41.3 inches tall, 10.4 wide, and 14.6 deep--and when we unboxed it, we didn't doubt its listed 62.5-pound weight. If that heft doesn't convince you of its robust build quality, a knuckle rap on the cabinet's side flank will. The monolithic tower is available in black and cherry vinyl finishes, and its form-fitting metal grille is a distinctive styling touch. If the Beta 50 is just out of your price range, check out the $399 Beta 40; it's a near twin of the 50 but uses slightly smaller woofers.
We imagine most Beta 50 buyers will match the towers with a full set of Beta-series speakers and an Infinity subwoofer. For our Beta review package, we selected the Beta C360 center speaker ($399), a pair of Beta 20 monitors as surrounds ($199 each), and the CSW-10 subwoofer ($999). The entire system retails for $2,794, but when you stop and consider that this ensemble can easily fill even a fairly large home theater with high-impact, feel-it-in-your-guts sound, the price is pretty sane. It's more affordable than most plasma TVs, and it will blow your socks off when you listen to music. Alternatively, you could pick up five Beta 10 satellites and the $799 SW-12 sub, which drops the price to $1,624. Feel free to mix 'n' match among the Beta-series models and build a system that fits your needs.The Beta 50 is a beneficiary of Infinity's patented Ceramic Metal Matrix Diaphragm (CMMD) speaker-driver technology originally developed for its high-end Prelude MTS models. CMMD drivers are said to be lighter and stronger than conventional paper, plastic, or metal drivers. According to Infinity, CMMD drivers produce lower levels of distortion for a more transparent and detailed sound.
The Beta-series tweeters have recently been revised to extend their ultra-high-frequency response out to 40KHz to enhance their performance with SACD and DVD-Audio discs. The tweeter is mounted in a special waveguide to ensure improved high-frequency dispersion throughout the listening room. We also noted that the engineers positioned the tweeter unusually close to the midrange driver, and that close proximity further improves the speaker's sound quality and imaging precision.
The infinity Beta 50 is a three-way, four-driver design featuring dual 8-inch woofers, a 5-inch midrange, and a 1-inch dome tweeter--the lot of them are CMMD drivers. The rear of the speaker houses a biwire set of all-metal connectors.The Betas' sound quality is significantly improved over that of the Infinity Primus models we tested last year. The new speakers are more detailed and live-sounding overall, and the tweeter's treble range has more sparkle and "air." The new sound is more articulate and precise, so we heard more three-dimensional space in our DVDs and CDs, and when we doused the lights, the big speakers all but disappeared as sources of sound.