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Dunlavy SCIII

Hello there,
well I am back with more trouble on my speakers. I have four SCIII and 1 SM1. After redoing the HT room, I was attempting to refocus my two front channels. After two hours of adjustments I discovered that the left speaker was down on total output. The image could only be centered if I increased the volume of my left speaker by 20%. So I loaded my trusted Stereophile calibration disk and mapped frequency response for both of them. The left differs from the right in the 63 and 80 Hz region (-8db) and in the 3.15k to 20k region (-5db). Additionaly, both speakers sounded as if there was tweeter damage at 16 to 20K (a lot of crackling, not a smooth response). Do I have tweeter damage on both? Do I have a croossover problem? Can you help me troubleshoot this problem? How do I isolate the amp from the cables from the crossover from the tweeters? I really really would appreciate your guidance.
Thanks
128x128shumi
foreverhifi
229 posts
 
the difference in response is likely due to room mode differentiation from where they are located. Probably not a speaker problem. Try switching their locations and see.
The other problem could be tweeter damage. Dun's are easy to blow tweet's on. I know, I sold em for years
maxcast
95 posts
 
Try the other two up front and see if you get similar results.
spraglow
32 posts
 
Mine are very sensitive to their room location as well. I have to set them up before I listen every time because of my 3 yr old (I just put them against the wall). Anyway, I get similar results (left channel is stronger) and it takes a while to set them in optimum position otherwise you get frequency imbalance.
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