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Gear / Technical Help => Playback Forum => Topic started by: grayp on September 13, 2005, 06:37:47 PM

Title: Testing a subwoofer
Post by: grayp on September 13, 2005, 06:37:47 PM: Ok, so the subwoofer in the den quit working. I think the subwoofer is bad and not the output from the receiver, however, I'm not 100% sure. Its a Harman Kardon AV525 receiver and a JBL powered subwoofer (don't know the model).
It is connected via a line level out.

The sub gets power and it knows when there is a signal b/c the light turns from red to green however nothing comes out. tried everything i could at the receiver level to make sure it should be sending to the sub and all looks good.

Since it takes a rca line level in, i figured i could plug the jb3 into it (line out to line in) and at least hear some bass coming out. Nada, so i think it is the sub. I guess I could also try the line level from the receiver into the jb3 to see if that gets signal.

Are my tests valid? Its under warranty and I'm going to just take it back but wanted to get opinions.

Thanks,
Gray
Title: Re: Testing a subwoofer
Post by: grayp on September 13, 2005, 07:30:36 PM: thats what i was thinking. nothing i can get to w/o taking it apart though
Title: Re: Testing a subwoofer
Post by: 1st set only on September 13, 2005, 08:00:15 PM: im sure that when you pop it open you will see the fuse pretty easy and smell if there is something burnt out.

good luck
Title: Re: Testing a subwoofer
Post by: Evil Taper on September 14, 2005, 06:15:16 AM: Crossover possibly too?
Title: Re: Testing a subwoofer
Post by: grayp on September 14, 2005, 10:01:13 AM: thanks +t to everyone. since its under warranty still, i'm not going to take it apart myself just yet :)
Title: Re: Testing a subwoofer
Post by: Chuck on September 14, 2005, 09:39:17 PM: Quote from: grayp on September 14, 2005, 10:01:13 AM
thanks +t to everyone. since its under warranty still, i'm not going to take it apart myself just yet :)

Call the manufacturer... see what they say.