@phendri27 In general, yes. In this scenario (Klipsch), at least the "5.1 Ultra" system had dual sub woofers, in addition to more speakers (5), and a separate control module that wasn't integrated into one of the speakers.
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Can someone clarify: The main difference between a 2.1 and 5.1 system is the number of speakers?
@phendri27
Yes and a bigger sub.
@phendri27 In general, yes. In this scenario (Klipsch), at least the "5.1 Ultra" system had dual sub woofers, in addition to more speakers (5), and a separate control module that wasn't integrated into one of the speakers.