This receiver has been fine. However, as of late I am getting very little sound out of my speakers even at high volume 35+. The speakers sound as if they were headphones. I have checked the speakers and there are no abrasions, cuts, bulges, or holes in or around the speakers. I have unhooked the speaker wire, input/outputs, and rehooked everything back in. Still no sound. I have listened on several different inputs i.e. CD, VCR 1 + 2, Tuner, TV, Tape, Phone, DVD and SAT. All with the same result. The subwoofer is also not working the way it normally has. When turned on it sounds scratchy and rough. I have also checked it for abrasions, cuts, bulges, or holes. Also, when turned near max volume it simply shuts off (The Receiver not the subwoofer). What can I do to fix this?
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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.
if the speaker is actually receiving signal and has sound, the next question is if the sub is self amplified or not. if it is check the amp in it. if not then check your unit to make sure the bass is not turned down and that the correct surround setting are there. there is also possibility that the show or item your listening too isn't outputting correct channels.
The simplest way is to insert the sub into the speaker wire run -- connect your receiver's speaker output to the sub input, then the sub output to the speakers.
These are the "High Level" connectors on the left side of your sub.
If your receiver has a subwoofer out (either one or a stereo pair) then you'll get better quality sound by connecting that output to the "Low Level" connector or connectors on the right. If you have stereo, then use both connectors. If your receiver only has one subwoofer output, then connect it to the left (may or may not me marked as "mono" depending on the age of your sub)
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Connection from receiver subwoofer output jack RCA plug male go into your powered subwoofer low level input with other end of cable, then you need to select Subwoofer YES/NO on the JVC receiver speaker setup menu option, select YES if this is a powered subwoofer you are using, should power up the subwoofer, may have to adjust a test tone balance for multi speaker output also, try trimming up on the subwoofer channel to initiate the signal on if the sub has an auto-on feature.