2. misc-audio
  3. 190105-185200

Very faint hiss from tweeter

I just put a new system together and noticed that when no music is playing, if I put my ear very close to the tweeter on either speaker, there is a very faint hiss sound.  Is this indicative of a problem?  Its not audible unless my ear is very close to the tweeter, but I wonder if its polluting amplified sound when I play music.  Should a system be stone cold silent when powered on with no music playing?

Heres my stack:
Focal Aria 936
Parasound A23+
Schiit Freya+
Bluesound Node X
 

akafritz
akafritz's avatar
akafritz OP
2 posts
 

Thanks for the helpful hints.  I tried all 3 modes on the Freya+ and eventually shut it off, and this hiss remained.  The amps gain is set to 12 o'clock, which is what it was on when I took it out of the box.  Unfortunately it's a hassle to get to the back of it now, so I'll try to lower it when I have some time to move things around.  But since the tubes are ruled out, I suspect its that or line interference.  

The noise doesn't bother me since its nearly inaudible, and I don't listen to music with my ear in front of the speaker.  This was simply something I was wanting to learn from.  

ditusa's avatar
ditusa
2,208 posts
 

Do you have dedicated audio lines?

Mike

mashif
387 posts
 

FWIW, I have an A23+ with an LTA tube preamp, a Schiit Bitfrost 2/64, and a Schiit Kara. The LTA runs through the Kara in passive mode, or I use the Kara for SS. A basic Furman surge protector and no other exotic cables. 

When I put my ear up to my tweeter I hear nothing. When I introduced a Schiit Lokius to my system, I heard hiss when I listened to the tweeter. When I removed it, the hiss disappeared. 

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