Question about Sunfire True Sub MK II Subwoofer

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Sub doesnt do anything while plugged in ( Sunfire mk II)

The "on" light never comes on. It is plugged into the AC outlet, and then via monster cable, plugged into my reciever port on the rear of my onkyo reciever. doesnt play, doesnt do anything. I checked the fuse, it appears to be okay.

I did hear a hum from my other speakers but researched and found it was due to some field caused by the cable comming into the room and being near it. note that did not occur when my velodyne 12 inch sub was hooked up with the exact same set up successfully.

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  • 133 Answers

Some subwoofers can sense the signal on their input and will only start when there's enough signal for long enough time for them to turn on the amp.

Try seting the "subwoofer signal out" on your reciever a bit higher, see if it does the trick, if not, try it with some other source (e.g. an mp3 or CD/DVD player) plugged directly into the subwoofer. If it still doesn't work, there's some other problem with your sub (bad connection inside sub, sub amplifier problems, maybe there's another fuse for the speaker itself, try to check it out).

If it works well with an alternate signal source, the problem might be either in reciever or the signal cable that you use, but could also be something else.

good luck

3rq8 (Triarcuate)

Posted on Jul 15, 2009

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