SDA tweeter LS2000's most common point of failure?
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treppenwitz
Posts: 2
Hi folks. It's my first time on this forum.
I have a pair of SDA CRS speakers (1986 or 87) that I bought used about 25 years ago. The right tweeter died around 2003 and I replaced it with an RD0194. I guess I lucked out that it was actually the tweeter that went bad, since I didn't troubleshoot any further before replacing it. The replacement succeeded.
Now nearly 20 years later, the left tweeter has gone out. There's a lot more information available online now, and it looks like the actual problem could be one of several things: The polyswitch, the tweeter coil, a capacitor, (or...? something else in the crossover circuit?).
I almost never crank these speakers, so I would be surprised if anything overheated or if it were drawing excessive current. I looked at the electrolytic caps and other components, and they visually appear fine.
Before I track down another RD0194, are there any downsides in shorting out the polyfuse? Is it just a matter of soldering a wire across it? or maybe snipping it out and soldering the leads together?
How common is it for a tweeter to just give up the ghost like that?
I have a pair of SDA CRS speakers (1986 or 87) that I bought used about 25 years ago. The right tweeter died around 2003 and I replaced it with an RD0194. I guess I lucked out that it was actually the tweeter that went bad, since I didn't troubleshoot any further before replacing it. The replacement succeeded.
Now nearly 20 years later, the left tweeter has gone out. There's a lot more information available online now, and it looks like the actual problem could be one of several things: The polyswitch, the tweeter coil, a capacitor, (or...? something else in the crossover circuit?).
I almost never crank these speakers, so I would be surprised if anything overheated or if it were drawing excessive current. I looked at the electrolytic caps and other components, and they visually appear fine.
Before I track down another RD0194, are there any downsides in shorting out the polyfuse? Is it just a matter of soldering a wire across it? or maybe snipping it out and soldering the leads together?
How common is it for a tweeter to just give up the ghost like that?
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Thanks for the quick reply. Yeah, if the info were as easy to get online in 1998 as it is today, I probably would have replaced the pair. I didn't know at the time that the replacement tweeter was different than the original in the other channel. And Polk didn't suggest it on the phone at the time when I bought the part, either.
The CRS has one tweeter in each speaker. Do you replace the polyswitch so that it is no longer a failure point, or is there another reason? -
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That it was made.SDA tweeter LS2000's most common point of failure?
