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DBX(Dynamically
Balanced Crossover) and Surround Sound System Enhancement FEATURES Over the years, there have been vast improvements in technologies that enhance the realism of home theater surround sound. Most of these improvements, such as DTS and Dolby Digital, improve the multi-channel separation(surround sound) of movies and some music, enabling the listener to experience a realistic rendition of live acoustics. DBX adds on to this by enhancing the sound quality of each individual main and surround speaker. Because the human ear is already more sensitive to the midrange section of the soundstage than to the bass and treble sections, DBX does not concern itself with producing the best midrange quality sounds. Bass is also not enhanced by DBX because our amplified subwoofer systems can already produce ample amounts of it. Instead, our DBX enhancement system focuses on bringing out the high, crisp treble through the midrange. The system filters in the highest sections of the soundstage that are still audible to humans, and amplify it to let the treble sing out. By using the DBX system, the home theatre soundstage becomes balanced: letting the treble sing out, suppressing the midrange from being too loud, and allowing the deep bass to sound out. DBX technology is incorporated into several of our DBX speaker models, each of these speakers the top satellite and tower units from Polk and JBL. Connecting DBX enhanced speakers is simple. They have regular speaker terminals which hook up to the receiver. In addition, they also feature an S-Video type connector( Like the one that connects the DVD to the TV ). For enhancement mode, the DBX Sound Processing Unit(SPU) is required. First, plug the SPU into a wall socket, and then connect the speaker to the SPU via the S-Video type link. An LED at the front of the speaker will indicate that the speaker is in enhancement mode(If the link is suddenly severed, the speaker's complex circuitry will automatically switch it back to normal mode). A single SPU can be linked up to eight individual speakers. DBX incorporates Dynamically Balanced Crossover systems The most important factor to a well balanced soundstage is the crossover. Crossovers are electronic filters which either let low frequencies pass to the woofer, or high frequencies pass to the tweeter. The simplest type of crossover is called the 1st order crossover. It consists of only a single capacitor and an inductor. Most brand name speakers have the 1st order crossover (some of their speakers aren't even equipped with crossovers, be sure to check for them if you're planning on buying a set of speakers). All our speakers feature at least a second order crossover. This includes a second stage of filters to enhance the separation of frequencies. We also have what we call a dynamically balanced crossover system, or the DBX technology. The DBX crossover system will provide the most balanced, pleasing tones to pass to each speaker unit. The secret behind this is in the underlying circuitry of the crossover. What's emphasized with the technology is clarity and frequency precision. Our DBX crossovers are finely tuned to provide this rich clarity even at both low and high volumes.
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