🚀 go-pugleaf

On Oct 19, 4:40 pm, Bob I <bire...@yahoo.com> wrote:
> D wrote:
> > On Oct 19, 1:37 am, Bob I <bire...@yahoo.com> wrote:
>
> >>D wrote:
>
> >>>On Oct 17, 10:13 pm, Bob I <bire...@yahoo.com> wrote:
>
> >>>>The problem is likely caused by the combination of "speakers" being
> >>>>disconnected by the insertion of the head phones AND the volume knob of
> >>>>the speakers being cranked up rather high. Now the speakers are
> >>>>amplifying the hum of the little power wart.
>
> >>>>D wrote:
>
> >>>>>On Oct 17, 1:44 am, "Richard Crowley" <rcrow...@xp7rt.net> wrote:
>
> >>>>>>"D"  wrote ...
>
> >>>>>>>It does not hum when no headset is plugged in.
>
> >>>>>>Then you can eliminate any problem with the computer,
> >>>>>>the sound card, or any software including drivers, etc.
>
> >>>>>>>One of the headsets is brand new and checked.
>
> >>>>>>What does "checked" mean?  Do either of the headsets work
> >>>>>>OK on another computer?
>
> >>>>>>>Yes, the hum changes when I move the headset around the room: the
> >>>>>>>further from the computer case the louder.
>
> >>>>>>I would take a wild guess that it has a shielding or grounding problem.
>
> >>>>>>>Yes, it hums when I try using a differen computer mic: both headsets.
>
> >>>>>>The problem may be with the basic design if both headsets
> >>>>>>show the same symptoms.
>
> >>>>>Thanks Richard Crowley for your suggestions!
> >>>>>The hum is from speakers, not from the case.
> >>>>>Yes, either of the headsets work OK on another computer.- Hide quoted text -
>
> >>>>- Show quoted text -
>
> >>>Thanks Bob I for your explanation!
> >>>How can the speakers amplify the hum of the little power wart if they
> >>>are disconnected by the insertion of the head phones?
> >>>A Sony ECM-T6 microphone and another desk-top microphone don't hum! A
> >>>new Koss sb/45 headset and Philips SBC HM300 headset hum from their
> >>>microphones.
> >>>How to make Koss sb/45 headset microphone work?
> >>>Best regards,
> >>>Dima
>
> >>The speakers are only disconnected from the audio source, the "wall
> >>wart" is still powering the speakers amplifier. Try turning the volume
> >>knob down or unplug the speakers little power supply.
>
> >>- Hide quoted text -
>
> >>- Show quoted text -- Hide quoted text -
>
> >>- Show quoted text -
>
> > Thanks Bob I for your explanation!
> > The speakers are in a headset. There are no other speakers. A "wall
> > wart" is not powering a headset.
> > Why does the hum appear from a headset microphone only, not from a
> > separate microphone?
> > Best regards,
> > Dima
>
> The confusion comes from the misuse of the term "speaker". The sound
> producing components in a headset are called "headphones" or "earphones"
> not "speakers", the condition I described applies to powered speakers
> not headphones or earphones.- Hide quoted text -
>
> - Show quoted text -
Hello!
The headsets hum from their microphones even through another sound
card Creative SB 16, although they do not hum on another computer.
How to prevent the hum?
Best regards,
Dima