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The amp inside the sub has failed. Basically a sub is a mono power amp with a speaker. Though it seems to be getting power it could be that the main semiconductor that does all the work has gone open circuit. If it went short-circuit it would have killed the fuse and power.
hi, Do one thing set the control behind the sub. set the level and cutoff control at it half position. Set phase control at "0" position. Then test the sound. if you ate using tower speaker as front speaker then you have to set the position of phase control 180 , ok
One or more of the DC to DC outputs might be bad. Check the /- 54v on the main PCB and the /-15v on the switching controller PCB. Losing one side of the 15v will cause the limit comparator to rail and force the servo protection, even with no input signal.
that remote wire has to be hooked up to the power or the radio power antenna wire which will switch the remote wire on when the radio is turned on, so that remote wire really should be hooked to the radio wire that gets power when the radio is turned on , thats why the sub is not turning on
I have the exact same problem with my S8.3 that I purchased a few months ago. It's just the blue LED that doesn't light up, otherwise it seems to output bass and the volume control works. Any suggestions?
Enter into the Audio Setup mode(press and hold volume button for at least 1 second). Next, repeatedly push the volume button until the display shows "2 ZONE". Make sure this feature is turned off. Hold the volume button again for at least 1 second to leave Audio Setup mode.
Now you need to make sure the Subwoofer Output is turned on. Do this by holding down(AM position) on the control knob(toggle stick) for at least 1 second. Each time the button is pressed, the Subwoofer Output is turned ON/OFF. the display should show "SW ON".
Next, you can go into Audio Control mode(press but do not hold volume button). Keep pressing on the volume knob until "Sub-WLevel" is displayed. Here you can adjust the amount of gain for the Subwoofer ranging from -15 to +15.
I have the same speaker and it sounds like its behaving properly.
if you look on the back of the amp, you will find a switch that allows the speaker to automatically switch the speaker on or off based on the level of the audio coming from the tuner that it is attached to. If the switch is set to the auto mode, then it will listen for audio on the line and if the signal level coming into the subwoofer is high enough, the amplifier in the subwoofer will turn on and play. If the signal is not strong or loud enough, then the subwoofer will not turn on. There are two solutions to getting the speaker to work.
1. When you turn on the tuner or audio source that is feeding the Subwoofer speaker, you will need to turn it up loud enough to trigger the circuit in the subwoofer to switch on.
2. Alternatively, you can bypass the automatic circuit and set it to the "ON position all the time. In this position the subwoofer is always ready and waiting and should play any signal that is fed to it regardless of the loudness or volume of sound from the tuner. The switch is located on the back of the speaker cabinet just to the right of the red and black speaker wire connections. It is labeled "AUTO" and the switch positions are labeled ON and OFF.