2. amps-preamps
  3. 1017282172

tube amp/flutter in speakers?

i have a nice pair of mono blks that are making my woofers flutter. when i adjust the hum bal it gets stronger or softer depending on which way i turn the adj. my interconnects are good. i am using an old pair of ess monitors with the heil driver. the amps are sansui HF V60. rated at 15wpc i belive?. thanks to all who help.
kona
glen's avatar
glen
714 posts
 
Do you see where Sean is going with this line of questioning?

I don't :^(

Sean, what exactly are you getting at?
kona OP
8 posts
 
NO. IT IS THE SAME. IT ONLY DOES IT IN ONE SPEAKER CABINETE. I HAVE SWITCHED CABS STILL THE FLUTTER. THE OTHER AMP WAS DOING IT BUT I WAS ABLE TO ADJUST IT WITH THE HUM BAL.
kona OP
8 posts
 
SORRY SEAN, YES. IT STARTS WHEN THE AMP IS JUST BEGINNING TO GET WARM. IF I TURN THE AMP OFF IT STOPS, TURN IT RIGHT BACK ON IT STARTS. JUST FLICKING THE SWITCH THAT QUICKLY.
sean
6,231 posts
 
The amp is either oscillating at a very low frequency or passing DC. Both are signs of an amp in need of a thorough inspection and repair / re-alignment. I would advise against running the amps until you can fully diagnose the situation. Continuing to do so could result in major damage to the speaker, amp or possibly both. Sean
>
mahandave
153 posts
 
very simple, your amps don't like the speakers and are unstable into the load they present for whatever reason. Either impedence/effeciency of the speakers or design of the amp/input impedence-output sensitivity. This is a guess though as I am not stating this from my own knowledge but from what I have recently read in Listner. Go ahead and correct me anyone if this sounds wrong.
More to discover