2. amps-preamps
  3. 1053797858

Does anyone have similar problem with Pass Amp?

I'm just wondering if what i'm experiencing is normal. I have a Pass X250 and Pass X1. When my preamp is muted or turned off I get a slight hum from the right speaker. The hum is only audible when the room is dead silent and my ear is right up against the speaker. Obviously it's not a major issue however i do not hear any home from the left speaker. Is this slight residual hum from right channel only normal? Any input would be appreciated. Thanks
128x128mitchb
ad010685
102 posts
 
MITCHb, I can inform you that after your thread I give a check to my Pass Aleph (class A single ended amp). Turned it on, and noted exactly what you described. I have both speakers the classic background hiss + a very slight bzzz from right speaker.

The fact that I catch it just after your thread means that it is really very low in intensity.
If this is the case, do not compromise with sound quality and just keep it as it is.
Cheers
corona
132 posts
 
That is normal. However, make sure your're system is only grounded through the preamp even if you have to use cheater plugs and new cheater plugs like anything else must be broken in [break in on a high resolution system is about 330hrs.of music not just a idle current flow].
platsolos
90 posts
 
It is probably coming from your wall outlet, and/or nearby equipment (TV/other electronics/PC). Do the tests with switching cables and try to reproduce in the other speaker, then you can trace it back. Also try switching the outlet it is plugged into, as well as cheater plugs.
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