The tweeter on the left speaker column was not re-producing any audio. After many DYI tests , I detached the tweeter and put it on the right side column- it worked. By that, I was able to establish that the issue was not in the tweeter itself. The issue seems to be on the connection to the tweeter on the left speaker column. I see a grey and a blue wire connected to the tweeter terminals. But don’t know where the other end of these wires are. Can the fault be at that other end - wherever it is?
Sounds like a crossover fault. You're going to need an LCR meter, soldering iron, and some patience.
Chris
Chris
Usual reason is exploded electrolytic cap in the crossover....remove crossover board and inspect.
Dan.
Never opened up a speaker before 🙂
Now how could i access the crossover board. Can it be through the woofer space?
I pulled out where the speaker posts are but nothing behind that.
Now how could i access the crossover board. Can it be through the woofer space?
I pulled out where the speaker posts are but nothing behind that.
It's always good to see what we're dealing with. Interesting speakers!
https://www.dali-speakers.com/media/3270/dali-107-brochure.pdf
https://www.dali-speakers.com/media/3270/dali-107-brochure.pdf
According to the spec sheet linked by Galu above, the crossover caps are Solen polys, which I’ve never personally had fail, so unless a loose wire is found in the investigation, you might be dealing with a dead tweeter. Easy enough to test that out by swapping the working unit to the other enclosure. This could also identify the make / model type should a replacement be deemed necessary - if so, I’d definitely consider replacing both.
If you look st my post - I had already swapped the tweeter to the other slide and it worked . The issue is on that particular speaker not the tweeter itself.
With the advice given here, I will open the woofer and investigate.
Some images
Had some time to open the woofer area and take some pictures through that. The other end of the blue and grey leads are seen ending at the crossover board.
Do these pictures give any clue? Not sure how to get about from here
Had some time to open the woofer area and take some pictures through that. The other end of the blue and grey leads are seen ending at the crossover board.
Do these pictures give any clue? Not sure how to get about from here
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