First thought...
-make certain that the distortion is actually coming from the speaker/speakers and not something vibrating in the room
Second thought - if it's coming from the speaker/speakers...
-gently check the exposed screws on all the drivers for loose ones
Third thought...
-your preamp has a rapid/measured (Stereophile) increase in distortion in the 1000-2000Hz region that quickly spikes down afterwards.
The 3rd is highly unlikely, and I assume that the spike may be dependent on the tubes used when measuring the unit, but it's STILL there in the review.
I once has an intermittent "distortion" with Castle speakers, and it was emitting from the speakers.
Think I described it @ the time as a sound "accompanying" the music, but not a part of such.
The remedy ended up being the placement of small felt circles over the mounting screws of the woofer as they were dome headed screws in the sound path of the tweeter.
DeKay
-make certain that the distortion is actually coming from the speaker/speakers and not something vibrating in the room
Second thought - if it's coming from the speaker/speakers...
-gently check the exposed screws on all the drivers for loose ones
Third thought...
-your preamp has a rapid/measured (Stereophile) increase in distortion in the 1000-2000Hz region that quickly spikes down afterwards.
The 3rd is highly unlikely, and I assume that the spike may be dependent on the tubes used when measuring the unit, but it's STILL there in the review.
I once has an intermittent "distortion" with Castle speakers, and it was emitting from the speakers.
Think I described it @ the time as a sound "accompanying" the music, but not a part of such.
The remedy ended up being the placement of small felt circles over the mounting screws of the woofer as they were dome headed screws in the sound path of the tweeter.
DeKay