[Tnguyen]

I have a Samson S1000 that accepts a subwoofer signal from pre/pro and
drives a passive SVS subwoofer. Until recent day, the amp stops amplified
sound. Through troubleshooting, it indicates that the fault is in the S1000
amp. I am able to get the SVS sub working by placing a working amplifier
between the pre/pro and the sub. This setup eliminates the suspicion of the
two components: pre/pro and the sub.

When I run the 5.1 sound balance with the S1000 in the system, sound is not
emanating from the subwoofer. However if I test the subwoofer peak from the
pre/pro and max out the test volume @ +15db (vol from the test menu in the
pre/pro), the amp does creat sound but not at a very loud level as when it
is working properly. What could posibly cause this problem?

BTW, the S1000 is a stereo amp. I only use one channel to power the sub. I
test both channel but they exhibit the same symptom as described in the
second paragraph.

Thanks all in advance.