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"Sizzling" tweeters at high volume?

I have my new SFC-1 tube amp (Svetlana El34) 50wpc. my speakers are ACI Sapphire II (Focal TK-120 kevlar tweeters)rated 15-150wpc, 90db with imp. of 6ohm. On some recordings (Live at the Greek, Tim Haggans...)snare drums, and trumpet would start to "crackle", at volume level past 12 o'clock. On other CD's it doesn't(Kind of Blue)
eldragon

Showing 3 responses by sedond

sedond
1,391 posts
 
the focal inverted titanium tweets should be a drop-in replacement - these tweets are what's in my meret re's, & i get no ringing, even at "head-banger" volume levels in a ~25x38 listening room... there was a cheap pair here f/s on audiogon last week...
sedond
1,391 posts
 
hi trelja,

inneresting - many folks have similar comments about these tweets, but i like 'em a lot in my meret's, driven by electrocompaniet amps. as much as comparably-priced proacs, which i also like a lot, w/their dynaudio-derived tweets.

that said, i'm considering getting gnu speks - the (less-expensive) newform research nhb645's or the r645's, or a custom-wersion w/accuton drivers...

regards, doug

sedond
1,391 posts
 
trelja,

the newform's have ribbons from 1khz up; below 1khz, they currently run the scan-speak revelator mid-woofs, either 5.5" or 6.5", depending on the model. ya, the accuton mid-woofs would replace the scan-speaks - also excellent drivers in their own right. but, i have to believe that the accutons, which are a couple of orders of magnatude faster than the scan-speaks, would mate w/the ribbons even *better* than the scan-speaks. and yes, the kharmas, which *have* gotten good press lately, *do* use the accuton glass drivers.

regards, doug

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