If one plays a DVD on a system that has small speakers, bass management is usually always on, regardless if there is LFE channel content.

Non-use of LFE channel does not mean you do not get bass. That’s not what it is for. IICORMN was mixed with the idea of full range speakers for the 5 surround, however, in sub-optimal (home theater) situations and even in some bigger systems, there is BASS MANAGEMENT, which means that low frequency signals from the 5 channels are summed and sent to a subwoofer.

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