tweeter problems
bribom
Posts: 5
I have RTi10 towers and a CSi5 center channel. While hooking up my PS3 months ago to my Denon 3806, for some reason i couldn't get the reciever to work on the multi channel in and was getting scratchy/high pitched noises through the speakers, in turn I believe I damaged the tweeters in my speakers. Turns out there was a problem with the reciever accepting the multi channel in over HDMI and I replaced it with a new reciever.
I now have it hooked through a Denon 3808 and a Sunfire 200 watt 5 channel amp with the fronts bi-amped and the center being run off the Sunfire. When I did this, I got 2 new tweeters from Polk and installed them believing it was just the center and right channel that were damaged. Now I believe the left was also damaged.
Despite replacing them, the tweeters still sound blown, It is very easy to tell as male voices tend to sound scratchy and like they are resonating funny at certain frequencies. Also, during Star Wars its very easy to hear the damaged tweeters when spacecraft are flying. They are very much making "crackling" noises at certain frequencies. It is very noticible through the center channel which has a new replacement in it from Polk.
Is it possible that I got bad tweeters from Polk or could I have damaged other components of the speakers? How do I know if just the tweeter is damaged, or is it possible I damaged the midranges as well? I guess I am not versed enough to know exactly what frequencies come from which drivers while I am listening. I originally thought maybe I was overtaxing the amp as I like to listen to music fairly loudly, hence the amp purchase, but I am dissapointed because it seems as though the "new" tweeters did not fix the problem.
Any feedback or help would be appreciated.
Brian
I now have it hooked through a Denon 3808 and a Sunfire 200 watt 5 channel amp with the fronts bi-amped and the center being run off the Sunfire. When I did this, I got 2 new tweeters from Polk and installed them believing it was just the center and right channel that were damaged. Now I believe the left was also damaged.
Despite replacing them, the tweeters still sound blown, It is very easy to tell as male voices tend to sound scratchy and like they are resonating funny at certain frequencies. Also, during Star Wars its very easy to hear the damaged tweeters when spacecraft are flying. They are very much making "crackling" noises at certain frequencies. It is very noticible through the center channel which has a new replacement in it from Polk.
Is it possible that I got bad tweeters from Polk or could I have damaged other components of the speakers? How do I know if just the tweeter is damaged, or is it possible I damaged the midranges as well? I guess I am not versed enough to know exactly what frequencies come from which drivers while I am listening. I originally thought maybe I was overtaxing the amp as I like to listen to music fairly loudly, hence the amp purchase, but I am dissapointed because it seems as though the "new" tweeters did not fix the problem.
Any feedback or help would be appreciated.
Brian
Post edited by bribom on
Comments
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I think it's quite unlikely, but not impossible, that you received replacement tweeters that are bad. It's much more likely that you damaged some crossover components. With a problem like you experienced- when there's a problem with handling a digital signal- the receiver may have output lots of high frequency energy over and above what was audible and that can damage the tweeters very easily. It's harder to damage the midwoofers and crossover components, but still possible. If you take your fingers and very gently and evenly push the woofer cones in a bit, they should move in and out smoothly and make no sound. If there's some resistance and/or a scratchy sound then the voice coil or former is damaged.
Your best bet would be to contact Polk customer service and let them walk you through some troubleshooting. They can help you decide what to replace. 800-377-7655
Jason
