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Help with kef r900 issue

I bought a pair of kef r900 speakers from kefdirect in April 2018. I enjoy them most of the time, but with some vocals, e.g., Alan Jackson, Allison Krauss and Mary Chaplin Carpenter, at nearly any level, they sometimes make a ripping, tearing or distorted sound that is hard to describe. Initially, I used a McIntosh MC202 with 200 rms, and now a Rotel RB 1590, with identical results. Initially, I used a very old Transparent Musiclink cable and now a Transparent Plus, again with identical results. I’m about to dump these unless I can figure it out since KEF has no one in the NW to repair them and they advise against paying to ship them (I agree). Before I write them off as a bad bargain, theories are solicited! Thanks
128x128maritime51
pete23
27 posts
 
Or maybe a quick youtube video demonstrating the issue and stating in the comments about what has been tried so far.  It is unlikely this symptom has never been heard before and others could offer suggestions. r900 not exactly inexpensive so would seem worth it to get some more ideas.
maritime51's avatar
maritime51 OP
1,288 posts
 
Good idea. I’ll give it a whirl. Thanks
bache's avatar
bache
222 posts
 
 I dont understant . the issue coming from both speakers or just one ?
maritime51's avatar
maritime51 OP
1,288 posts
 
Both. Initially, I thought it was from one, but may have failed to isolate the other. Who knows, but I’ve now tested each in isolation, under identical conditions, and found the effect nearly, if not identical. 
audiotroy's avatar
audiotroy
1,621 posts
 
Maritime we are a long time Kef dealer, there is no way that if you replaced a set of drivers and the speakers are making the same distortion is it the drivers.

You may have a bad part in the crossover or there is something wrong with one of your components.

The likelyhood of both speakers having an issue is doubtful you need to go back and start checking your components.

I would borrow an amp and start there.

This is one of the reasons why buying direct is not a good practice if you have a local dealer then your dealer would be assisting you to resolve the problem.

Dave and Troy
Audio Doctor NJ
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