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Proac Ribbon Tweeters Damaged

Hi all - this is my first submission, so looking forward to your responses...

I own 2.5 year old Proac D48 R speakers, powered by a Parasound Halo A21 amp (about 8 years old). When listening the other day I thought the speakers sounded dull, muddy. It appears both of my ribbon tweeters have gone out and I am at a loss to understand why.  The amp is certainly not under powered to cause clipping damage and I never play my unit abnormally loud  - maybe 1/4 to 1/3 total volume.

As you can imagine, my repair/driver replacement will not be covered by warranty as this is not considered a manufacturer defect. I am told the tweeters run $399 per.

Worst thing I can do is have these repaired and then have it happen again. HELP!
gnoworyta
bjesien
1,384 posts
 
Growing up we had a large with room with McIntosh gear and a pair of ADS 910 speakers.  When I played music too loud, with the loudness or the bass up too high on the C28 preamp, the 910 tweeter fuse would blow.  Looking back, my father was quite patient with me.  In true audiophile form, he always asked if I could notice that the highs were absent, rather than get angry about the fuse.  
Do you have kids in the house?
gnoworyta OP
70 posts
 
bjesien - nope, no kids. Wish I did - at least I'd have someone to blame!
jetter
3,094 posts
 
gnoworyta,
Please be sure to post what the cause of the blown tweeters is after the dealer comes out.  I have a similar amp.
gnoworyta OP
70 posts
 
jetter - He really couldn't say. Although he did not "test" it, he said the amp appeared to be operating normally. He just said that somehow some sort of "system spike" had to have been generated to cause the ribbons to go. 
jetter
3,094 posts
 
Well, that doesn’t help much as you originally posted to find out what was wrong so it doesn’t happen again. As I mentioned earlier, I had (still have) speakers with two scanspeak 7" woofers in each speaker. Same thing happened, turned it on one day and all 4 woofers dead. Sent them to the dealer for his inspection and he had the manufacturer replace them under warranty. Nothing like that happened again using same amps and speakers. I am sure you have it under control and sorry to sound like a broken record, but before spending the big bucks on completely replacing the tweeters if that is what your are thinking of doing, I would telephone Millersound and see if they can help. 
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