You might get to goshopping for a new speaker system.
Before you get started, double-check all equipment is turned off, including the subwoofer.
You never want to connect or disconnect any cables while anything is on, lest something incurs accidental damage.
Miguel Co / Lifewire
Check connections and speaker wires.
Check to double-check that cables are firmly connected and plugged into the correct spots.
Theinputs on the back of the subwoofergenerally plug into the subwoofer output on the back of receivers or amplifiers.
Perform a quick test on the wires to check that they work.
Check outlets, power cable, and fuse.
Most subwoofers have a “standby” LED that glows to indicate active power.
ensure that all associated switches (i.e.
ones on walls, power strips, etc.)
are flipped to the on position.
As with the speaker wires, inspect the subwoofer’s power cable for any damage or defects.
Some subwoofers are equipped with a fuse, which may or may not require removal of a back plate.
Otherwise, consult the manufacturer or local repair shop first.
Check system and menu configs.
Check that the subwoofer is associated with the proper audio input selections.
see to it that the subwoofer’s output hasn’t also been adjusted down.
Verify connections, turn on the subwoofer, and set the volume.
After all connections and options have been verified, turn on the subwoofer.
Check the volume level on the subwoofer and receiver or amplifier before sending any audio input.
If the second subwoofer works, then it’s very likely the original is indeed bad.
But before you jump in shopping, determine if you need apowered or passive subwoofer.
