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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Make sure your front speakers are set to small in the setup menu. Regardless of how large your speakers are, if they are set to large the receiver will put the low frequency sound out the speaker jacks and turn off the subwoofer output
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.
You can prove the sub pre-output works by running an RCA cable from it to the input of a tape deck, TV or any other device that accepts Line In and will either display it or play it. Test it on VERY LOW volume at the receiving device.
If the output seems low or it IS low, there can be several reasons for that. Have you verified with low frequency material or with a test tone that the driver is moving? One reason to watch it is because if the subwoofer is not properly placed, you will have cancellation of certain frequencies depending on the room it's in and you won't hear them.
Second, is the output level of the sub set on the device that it is connected to and matched in level to your other speakers?
Be aware however that many brands, even those that have extremely exotic and expensive loudspeakers, often make mediocre subwoofers in their product line.
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.