Infinity PSW310W Wireless Subwoofer Review

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The Infinity PSW310W wireless subwoofer incorporates a simple idea - make a subwoofer wireless - that has a wealth of practical implications. With a conventional wired subwoofer, a line-level cable has to be connected to it from the A/V receiver, which can limit subwoofer placement if it's impossible to run the cable to a particular location. The PSW310W, on the other hand, eliminates the need to run a cable from the receiver to the subwoofer, thereby freeing up the subwoofer to be installed in a greater variety of locations.

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The Infinity PSW310W (suggested retail price: $1,199) comes with a transmitter unit that attaches to an A/V receiver (or other signal source) and a receiver unit that is built into the subwoofer. The transmitter and receiver operate on the 2.4GHz range, and provide a choice of four selectable channels. The PSW310W incorporates a 400-watt amplifier, a ten-inch woofer featuring Infinity's Ceramic Metal Matrix Diaphragm (CMMD) cone material, and two ten-inch CMMD passive radiators.

The CMMD drivers utilize cones that are made by anodizing a ceramic material to both sides of an aluminum core. This construction creates a lightweight, rigid cone designed for improved transient response and articulation.

The woofer is front-firing, and the two passive radiators are side-firing, in an enclosure that measures seventeen-and-a-half inches high by fourteen inches wide by fourteen-and-three-quarters inches deep, weighing 50 pounds. Frequency response is from 32Hz - 150Hz. The PSW310W includes crossover level and frequency controls, a phase switch, and line level and LFE inputs, so it can also be used as a wired subwoofer. Additionally, the PSW310W includes the Infinity Bass Optimization System, an equalizer system that is used to correct for a low-frequency peak or dip in a room to provide more even bass response.

The PSW310W is styled to match Infinity Classia Series loudspeakers (but can be used with any loudspeaker brand), with a curved top surface, a choice of gloss black or cherry-wood finishes and silver horizontal trim pieces along the top and bottom of a black grille. It's much nicer-looking than your typical woofer-in-a-black-box.

In practice, the wireless capability works well as long as the transmission from the receiver isn't blocked by metal or some other types of building materials; at a trade show, an Infinity subwoofer worked just fine in the midst of a throng of gadgets, electronics, cell phones and Blackberries. The CMMD drivers give the PSW310W tight, articulate low-frequency capability, and having a total of three ten-inch drivers and passive radiators provides a large amount of woofer surface area to generate a generous amount of bass. For optimum sonic performance, it's best to keep the side-firing passive radiators away from a wall and to avoid blocking the front-firing woofer (with a piece of furniture, for example).

Read about the high points and the low points of the PSW310W on Page 2.

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