Polk Audio CSi 40 Center Channel Speaker (Black)
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description: Polk Audio CSi 40 – Review The Polk Audio CSi 40 is a classic centre-channel speaker from Polk’s earlier generations of home-theatre products. Designed primarily to handle the most important part of a movie soundtrack—the dialogue—it combines a substantial cabinet, dual 6.5-inch drivers and Polk’s Dynamic Balance technology to deliver a presentation that is considerably bigger and more authoritative than many compact centre speakers. Although the CSi40 is now a discontinued model, its combination of size, sensitivity and full-bodied sound means it can still be an excellent choice for a carefully matched home-theatre system. Design & Build Quality The CSi40 immediately gives the impression of being a serious centre speaker. Its relatively large cabinet provides the internal volume needed for the two 6.5-inch drivers to produce convincing lower-midrange energy. The black wood-grain cabinet on the example shown here has a distinctly early-2000s Polk appearance. It is not particularly minimalist by modern standards, but it has a solid, purposeful look that suits a traditional home-theatre system. Around the rear are conventional speaker terminals and the large enclosure is designed to sit horizontally below or above a television or projection screen. One of the CSi40’s greatest advantages is simply its physical size. Compared with smaller centre channels using 4- or 5.25-inch drivers, the CSi40 has considerably more ability to move air. Driver Configuration The speaker uses a pair of 6.5-inch Dynamic Balance mid/bass drivers flanking a central tweeter. This configuration gives the CSi40 plenty of cone area for a centre-channel speaker. That extra driver area is particularly useful for male voices, action movies and soundtracks containing substantial mid-bass information. The CSi40 is also capable of playing at respectable levels without sounding strained, making it particularly well suited to medium and larger rooms. Sound Quality Dialogue Dialogue is where a centre spe…
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