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Tech Tip: Sunfire Subwoofer Hookup

Many subwoofers on the market have an “LFE” input (Low Frequency Effects). We run a RG59 cable from the receiver LFE output, hook it up, and all is well.

Sunfire subwoofers do NOT have an LFE input. On these subwoofers, we must add a “y” cable for the RCA connection so that we feed into both left AND right. Otherwise, we have connected only ½ of the amplifier.


These tech tips are intended to provide insights to small nuances to help with many different products we offer. It is the small attention to detail that separates an outstanding job from an OK one. Although these apply primarily to technicians, they will help others gain insight to what the technicians do – in small doses.