Q. How do I connect the subwoofer to my A/V receiver? I have one cable. Do I plug it into the subwoofer’s left or right input, or both?
A. Use either the left or right line-level RCA jack on the subwoofer. You don’t need to connect it to both, because the inputs are “summed” to mono inside the sub. Connect the remaining RCA male plug at the other end of the shielded coaxial cable to the single “Subwoofer Output” jack on your receiver. It might also be labeled “LFE Out” (Low Frequency Effects) or “Sub Out.” That’s it! Subwoofer connection made easy!
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A. You can use the M60 or M80 without a subwoofer because both have smooth, extended bass output, but for movie soundtracks and home theater applications, the subwoofer produces lots of very low-frequency effects designated just for the sub, plus bass for the center and effects channels, especially when you have the Bass Management in your receiver set to “Small” for the center and surround speakers. If you set your main floor standing tower speakers to “Large”, the subwoofer will still handle deep bass dedicated to the LFE channel and the towers will cover bass that was mixed full frequency to the front left and right towers. 