Tweater hiss


I have B & W 802 Nautalis speakers, Bryston 4B ST amp, and BP-25 preamp. I hear a hiss coming from my tweater when no music is playing. I assume it is occuring during the playing as well. I just had the amp serviced by Bryston and was wondering if anyone had any ideas on what is going on?

bryanhod

Showing 2 responses by gogamecocks

If you unplug your preamp from the amp, do you still have the hiss? Does the hiss change in volume when you adjust the volume of the preamp?
The fact that you isolated your amp from the rest of the system would narrow it down to a couple of possible explanations that I would check first.
1. The noise is typical of the unit (ask Bryston)
2. Try an AC line conditioner. (garbage in - garbage out)
3. If not 1 or 2, I would be asking someone smarter than myself.