Under Couch Subwoofer If you are using your subwoofer with a diminutive stereo system, you can connect the subwoofer using additional speaker cables (provided the subwoofer has speaker-just connections). You hamstring up the subwoofer like an extra put of speakers, worn the same connections on your amplifier and running the cables to the subwoofer’s speaker wire rope inputs. We can’t go into all the diverse ways to do this here, but the subwoofer’s manual will likely include plate that show the connections clearly.
Now you need to set the level (or volume) of the subwoofer pertinent to the other speakers. If you’re using a domestic theater receptor, it has a framed-in test tone that will help you prepare the subwoofer’s level. In this plight, you’re regularly best off leaving the subwoofer’s volume control about partial up and rectify the volume of the subwoofer using the receiver’s controls. If congelation the sub’s compass halfway up doesn’t give you enough volume, try flexure it up throughout three-quarters of the way (3 o’timepiece) and then fine-tuning the impartial with the receiver’s subwoofer level control. If you have to deflect up the just on the subwoofer by halfway, don’t annoy throughout it. Practically all powered subwoofers have an internal limiter that will protect the mallet and amplifier. Unless you’re hearing bulky amounts of distortion, there’s no proposition.
To determine a bum question, first check the audio affinity between the subwoofer and the hopper. A flyblown or partially disconnected cable length can produce hum. If the wire rope is in pious state and the connections are solid, and if your subwoofer has a detachable AC enticement that you can flip in its socket on the subordinate, try damn the connector. If your sub’s AC cord is permanently attached or not designed to be turn, try plugging the subwoofer into a spirit outstrip shared by the rest of the audio/video system. If this sleight eliminates the hum but keeping it connected this away permanently isn’t practical for you, try second-hand an insulation transformer on the cable pregnancy from the receiver to the subwoofer.