Speaker noise - hissing

How quiet should my speakers be with a 50 watt tube amp when no music is playing? Is this hissing sound possibly from the tubes?

adampeter12-26-2008 10:04pm

adampeter OP Details Discussions Posts This discussion Message User 27 posts 12-28-2008 at 11:04pm Copy Comment URL Report Comment Edit Delete 50 watt power amp and tube pre-amp. I hear the noise when source is off as well as pre-amp being off. Maybe it's just time to replace the output tubes? ... 6SN7GT x 4.
adampeter OP Details Discussions Posts This discussion Message User 27 posts 12-28-2008 at 11:58pm Copy Comment URL Report Comment Edit Delete Newbee, The amp is an Audio Aero Capitole. It has four 6SN7GT tubes, four E34L tubes and four 6550C tubes. No loss in clarity just the hiss.
adampeter OP Details Discussions Posts This discussion Message User 27 posts 12-29-2008 at 01:43am Copy Comment URL Report Comment Edit Delete The noise is new...same amp and same speakers. I can hear the hiss from 3-4 ft but, not really from my listening position of 9-10 ft.