- The best way to make sure your subwoofer is receiving a signal is by first connecting a subwoofer cable to your LFE port on the back of your subwoofer and leaving the other end disconnected. Have your subwoofer level set to about 40% and now hold the other disconnect end of the cable in your hand and firmly tap(multiple times) to see if you’re getting feedback from your subwoofer.
- Next preform a TEST TONE sweep in your receiver to make sure your receiver is sending a signal to the subwoofer. This will typically be located under settings/setup, listed under speakers and look for LEVEL. You should see an option for TEST TONE. Make sure your receiver is at a loud enough volume level to hear the test tone it’s sending. Also make sure your db level for your subwoofer isn’t below -5 so your receiver is sending a strong signal.
- In your receiver, you should have an option to pick YES for subwoofer but if you have your speakers set to LARGE, most cases your receiver won’t be sending a subwoofer signal or not a strong signal unless you pick LFE + MAIN. This is a big step that is easy to miss.
Note: For information about your receiver or receiver settings/setup, please check your receiver manufactures manual or contact them for support as every manufactures settings can be different.