JBL LSR4312SP, Руководство пользователя

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automatically switch on their internal high-pass fi lters, set to the same exact crossover frequency. The
end result is a perfectly matched system, with the main speakers reproducing all signals above, and the
LSR4312SP reproducing all signals below the selected crossover frequency.
Beyond the fact that a subwoofer is designed for the optimal reproduction of low frequencies, bass
management can also be used to solve acoustic problems in a room: having all the low frequency signals
come from a single source will eliminate low frequency phase cancellation that can occur when the same
low frequency signal is reproduced by multiple speakers.
Ultimately, the decision as to whether to use bass management is dependent largely upon the application.
There are times when you may need to use the LSR4312SP to monitor the LFE channel only, and other
times when the LSR4312SP bass management system is preferred since it allows you to extend the
low frequency response of your system and fi ne tune the way bass is reproduced in the room. Either
way, professionals recommend that you always at least check your surround sound mixes with bass
management on, since that is the way most consumers will listen to the fi nished product. The LSR4312SP
allows for easy switching between the two modes of operation.
There are also advantages to adding a second LSR4312SP to a surround setup. In large rooms, the
addition of a second subwoofer adds additional dynamic range and smooths in-room frequency response.
Appendix A: About Surround Sound