No one has an opinion if this should have a hum or not
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Check your electrical. Mnay homes have poor AC current”
ive switched cables, etc, numerous times,
check your incoming current!
Turn off preamp, with ,amps on, if u still hear a staticky tweeter noise, it’s probably the. Preamp.
Preamp off, blackness, from speakers, probably the preamp , old capacitor, needs recapping.
I’m breaking in a pair of Odyssey kismet amps, I have a right speaker tweeter staticky buzz, I k ow it’s the power from the house, as it disappears from specific hours of the 24 hr clock.
This am, my Furman shut down, from over voltage, it was two dots in the red, which was well over 125V - q130V
it shut down the system.
After about 8AM, it went down to 110-115V,
shut off, restarted Furman , and all is well!
Our line voltage is shite here
I had a KSA200s & it was dead quiet. I could turn the volume quite high with nothing playing & it was like it was not even on. I was using a Krell pre amp as well if that matters.
On a sad note the KSA did fry itself after a while and I replaced with a FPB300cx which is just as quiet.
Perhaps this will help.