No Sound from subwoofer

[shootermcgavin7]

About 8 months ago; I replaced a passive subwoofer in my system with an active subwoofer.

I came back from a business trip to notice that the power to the sub was completely off, and I couldn't turn it back on.

I checked the fuse - it was blown, so I replaced it and now the subwoofer turns on; i.e. the lights on the rear panel come on, etc.

However, it still won't play - no sound at all.

I replaced it with my old passive subwoofer, and that one will work, so I know there's nothing wrong with the speaker wire or the receiver.

Any thoughts?

I was thinking of trying to replace the terminals; but I really have no idea what is wrong at this point after replacing the fuse.

 

[markw]

I replaced it with my old passive subwoofer, and that one will work, so I know there's nothing wrong with the speaker wire or the receiver.

I was thinking of trying to replace the terminals; but I really have no idea what is wrong at this point after replacing the fuse.

Odds are it isn't the terminals. What does that leave you with?

 

[shootermcgavin7]

Odds are it isn't the terminals. What does that leave you with?

I don't think the actual woofer is blown - wouldn't I get a hiss or some type of noise if that were the case?

It is powering up now that I replaced the fuse (as I mentioned earlier).

I'm kind of clueless at this point as to where the problem could like.

 

[wlecount]

Check receiver settings.

Mine quit working a couple days ago so I did something I don't typicaly do and pulled out the manual. Somehow I had changed the LFE/Bass out to Front which would allow my sub to turn on, but no sound was being sent to it. So I changed it to Both (SWFR & Front) and I'm back in business.

Now I'm no audio professional, but this is what worked for me. Hopefuly it's something as simple as that.

Also I'm using a Yamaha 5860.

 

[shootermcgavin7]

Mine quit working a couple days ago so I did something I don't typicaly do and pulled out the manual. Somehow I had changed the LFE/Bass out to Front which would allow my sub to turn on, but no sound was being sent to it. So I changed it to Both (SWFR & Front) and I'm back in business.

That's actually a really good idea - it is possible that the fuse blew while I was out of town and my brother (who thought maybe it was a settings problem) screwed the settings up somehow.

I'll check that tonight.


However - to test the receiver, I pulled the old passive sub out of my closet and that one still works fine with the current receiver settings; which leads me to believe that it is an issue with the subwoofer itself.

 

[bobbydigital]

You should ask your brother what happened to the sub maybe?

Do you have warranty on the sub?

 

[mtrycrafts]

That's actually a really good idea - it is possible that the fuse blew while I was out of town and my brother (who thought maybe it was a settings problem) screwed the settings up somehow.

I'll check that tonight.


However - to test the receiver, I pulled the old passive sub out of my closet and that one still works fine with the current receiver settings; which leads me to believe that it is an issue with the subwoofer itself.

The fuse blew for a reason
What happens when you manually, gently move the cone? Any noises?Any funny smell there, like something burnt?
How is this powered amp connected? I suppose it worked before the trip but not after brother had a lone session with it?

 

[awesomebase]

Good sit-down...

I'd have a little chat with your brother. Obviously if the fuse is blown he must have been trying to push the sub too much. If what you say is true in terms of getting the passive sub to work and you are certain that the signal is coming through from the receiver, than the logical answer to me is that the driver is blown. If your receiver is good and sending a signal, your cabling should have no problem, you can verify power from your sub's amplifier, and all else being equal, than your driver is the one that is blown. Talking with your brother might give you more of a clue what happened. Chances are he just pushed it too much.

 

[markw]

Remember, a passive sub works off of speaker terminals.

It has notning at all to do with a signal from the LFE output ofthe receiver.

IOW, it's a bogus test that proves nothing at all.

 

[shootermcgavin7]

Do you have warranty on the sub?

If the warranty were still good I wouldn't be here

The fuse blew for a reason

Yeah, but I had figured that would have prevented any further damage. Guess I was wrong.

I'd have a little chat with your brother. Obviously if the fuse is blown he must have been trying to push the sub too much. If what you say is true in terms of getting the passive sub to work and you are certain that the signal is coming through from the receiver, than the logical answer to me is that the driver is blown. If your receiver is good and sending a signal, your cabling should have no problem, you can verify power from your sub's amplifier, and all else being equal, than your driver is the one that is blown. Talking with your brother might give you more of a clue what happened. Chances are he just pushed it too much.

He said he just turned it off. He did a damned good job of it, I guess. I'll grab a multimeter and check the driver when I get home this weekend.