Recently the subwoofer fell over on its side. There was no distance from which it fell, rather, it just tipped over. Since that happened the middle and its immediate left side speaker channels have stopped working. All speakers are in good working condition, however, there is no juice coming out of the mentioned channels in the back on the subwoofer. What could the problem be? I am wondering if there is some kind of shock protector or something of the sort in this system.
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Depending on the model, there are two ways to connect a subwoofer to an amplifier, receiver or processor. The best way is to connect the subwoofer to the SUB OUT or LFE output of a receiver, but some subwoofers can be connected to the speaker level outputs of the receiver or amplifier.
1. How to Connect a Subwoofer to the Subwoofer Output
The preferred method of connecting a subwoofer is through the LFE or Subwoofer output (SUB OUT) of a receiver. Almost all home theater receivers (or processors) and some stereo receivers have a subwoofer output. The LFE (Low Frequency Effects) is a special output for subwoofers and is often labeled 'SUBWOOFER' not LFE. 5.1 channel programs on DVD discs have a dedicated .1 channel output with bass-only content that is best reproduced by a subwoofer. Connect the output of the LFE or Subwoofer jack to the Line In jacks of the subwoofer using a single RCA cable (the two jacks on the left in the photo). A 'Y-Cable' may be necessary to connect the LFE output to both the left and right channels of the subwoofer.
2. How to Connect a Subwoofer to Speaker Level Outputs Some receivers and amplifiers do not have an LFE or Subwoofer output. In this case you can use the speaker outputs of the receiver to connect the subwoofer. Using speaker wire, connect the left and right channel speaker outputs of the receiver to the left and right channel speaker level inputs on the subwoofer (the speaker inputs on the right side of the photo). Using speaker wire, connect the left and right channel speaker outputs on the back of the subwoofer to the left and right channel front speakers.
Follow these steps: •Plan out your setup. Before you start unpacking speakers and moving furniture, it's a good idea to have a placement scheme in mind.
•2 Consider the location of the outlets in your home theatre room. If possible, choose a room powered by a single circuit breaker to reduce the risk of damage due to the overload your home theatre system might cause. Supplement the number of outlets with power strips.
•3 Place your TV. The television should be placed where it can be viewed straight on. The center of the screen should be aligned with the eyes of a seated person.
•4 Place your speakers before you start hooking things up. If there are hearing-imparied people in your household, place the speakers so that someone could sit directly next to at least one speaker.
•5 Position your central channel speaker above or below your TV. If you put it on top of your TV, make sure the front edge of the speaker is aligned evenly with the front of your TV screen.
•6 Place your front left and right speakers at equal distances on either side of your TV. The height of your left and right speakers should match the height of your central channel speaker.
•7 Put your surround speakers at equal distances to the left and right of where you would normally sit and view your TV. Do not point your surround speakers directly at your viewing position. Try pointing them toward the back of the room or toward the ceiling.
•8 Place your subwoofer to the side of the room, about halfway between your viewing position and your TV. You can adjust the bass reaction of your subwoofer by moving it closer to a wall to increase the bass, or by moving it away from a wall to decrease it.
•9 Connect your speakers and theater system by running flat speaker cables down the length of your baseboard or lower portion of your wall. Consult your owner's manual for exact instructions.
Optimal placement of these like speakers of any design will vary depending on room dimensions and your listening distance from them.
A good place to start with them would be the same distance apart from each speaker as they are from the listening position. In that position they should also be placed closer to a rear wall than any side wall, approximately half that distance.
Do you mean that the right speaker which is routed through the subwoofer's Speaker Level In and Out is not working? Did it all start when you added the subwoofer?
Perform some isolation and connect that speaker directly to your receiver to see if it works.
YES? Recheck the speaker connections. After all, the sub is only connecting your receiver to the speakers after borrowing LFE information. Observe matching + and - polarity throughout.
NO? Either the speaker or the Receiver channel have a problem, but that isn't likely if the problem appeared just from putting the subwoofer into the mix. You can swap speakers to eliminate them and swap source amplifier channels to isolate them.