Dynaudio Contour failure.

Ducataudio · 2nd May 2007, 11:07 PM

Hi,

I have this speaker that has a problem with high frequencies that go on and off randomly. It feels like as if there's a blanket in front of the speaker, then it goes away then it comes back...

One thing I know is that if I turn the volume know it all comes back to normal, but I have to crank it up.

Can I fix that myself?
Anyone in the LA area who can fix it?

Cheers, J.

andy2 · 2nd May 2007, 11:39 PM

My guess would a loose connection somewhere either in the xover or the connection to the tweeter. You probably have to open up and take a look at the xover.

Ducataudio · 3rd May 2007, 12:24 AM

I have to add that the speaker fell about a year ago and sustain some cosmetic damages. Now I'm pretty sure something inside must have cracked as well. Anyway how do I check anything in there?!

Foxx510 · 3rd May 2007, 01:51 AM

Can you get the crossover out? You really need to check for a cracked solder joint, on the other side of the board.

Ducataudio · 3rd May 2007, 01:51 AM

ok so after close hearing it's the tweeter that goes on and off.

I can have it back on when cracking up the volume.

Could it be a component on the Xover board or the tweeter itself?!

Foxx510 · 3rd May 2007, 01:58 AM

It could be the tweeter or the crossover. Can you run it with the crossover accessible? If so, wait till it cuts out then tap the crossover and see if it comes back on. Try gently pushing on parts in the crossover and see if the tweeter goes on and off.

Ducataudio · 3rd May 2007, 02:48 AM

Tapped -gentle push pull- about everything in there and nothing changes.

Solders and stuff feel pretty strong

driver's still off.

Could it be a faulty components?

phase_accurate · 3rd May 2007, 05:52 AM

Another quick one is to try the tweeter of the second box then you are at least sure if it is the tweeter or the crossover.

Regards

Charles

Foxx510 · 3rd May 2007, 06:11 AM

Yep the next step is to swap the tweeters, if you can, as it is possibly the tweeter itself that is the problem. If the problem moves to the other box you have found your problem.

Ducataudio · 3rd May 2007, 02:29 PM

Can I do some measurement with a multimeter instead?
Then what value should I expect?

I can go to radioshack and grab one quickly.

Or can I connect the tweeters to each another instead of unsolder
everything?

Thanks for your help!

2nd May 2007, 11:07 PM	#1
Ducataudio diyAudio Member Join Date: Dec 2006	Dynaudio Contour failure. Hi, I have this speaker that has a problem with high frequencies that go on and off randomly. It feels like as if there's a blanket in front of the speaker, then it goes away then it comes back... One thing I know is that if I turn the volume know it all comes back to normal, but I have to crank it up. Can I fix that myself? Anyone in the LA area who can fix it? Cheers, J.

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2nd May 2007, 11:39 PM	#2
andy2 diyAudio Member Join Date: Nov 2004 Location: Los Angeles	My guess would a loose connection somewhere either in the xover or the connection to the tweeter. You probably have to open up and take a look at the xover.

3rd May 2007, 01:51 AM	#4
Foxx510 diyAudio Member Join Date: Nov 2006	Can you get the crossover out? You really need to check for a cracked solder joint, on the other side of the board.

3rd May 2007, 01:58 AM	#6
Foxx510 diyAudio Member Join Date: Nov 2006	It could be the tweeter or the crossover. Can you run it with the crossover accessible? If so, wait till it cuts out then tap the crossover and see if it comes back on. Try gently pushing on parts in the crossover and see if the tweeter goes on and off.

3rd May 2007, 05:52 AM	#8
phase_accurate diyAudio Member Join Date: May 2002 Location: Switzerland	Another quick one is to try the tweeter of the second box then you are at least sure if it is the tweeter or the crossover. Regards Charles

3rd May 2007, 06:11 AM	#9
Foxx510 diyAudio Member Join Date: Nov 2006	Yep the next step is to swap the tweeters, if you can, as it is possibly the tweeter itself that is the problem. If the problem moves to the other box you have found your problem.

3rd May 2007, 02:29 PM	#10
Ducataudio diyAudio Member Join Date: Dec 2006	Can I do some measurement with a multimeter instead? Then what value should I expect? I can go to radioshack and grab one quickly. Or can I connect the tweeters to each another instead of unsolder everything? Thanks for your help!