Power problems - Hi frequencies

Archived from groups: rec.audio.pro (More info?)

Hi --

My local church has had problems with an extremely high pitched sound coming
out of the speakers - in tone not unlike a microphone on the verge of
feedback. We've swapped out various pieces of equipment, and come to the
conclusion that the problem is related to a powered advert hoarding outside -
on the couple of occasions where the hoarding has been down we haven't had the
problem - if we take power from a different phase further down the road, then
it gets rid of the problem.

Is there some way to identify and solve the problem ? At a guess we'd need
something like a 'power conditioner' that removes RFI - but we are in the UK
so whatever solution we pick will have to work with the mains over here.

Regards,

--
regards, chris

Archived from groups: rec.audio.pro (More info?)

On Mon, 26 Jul 2004 19:34:01 +0100, Chris Stiles
<to83-t7cw@spamex.com> wrote:

>
>Hi --
>
>My local church has had problems with an extremely high pitched sound coming
>out of the speakers - in tone not unlike a microphone on the verge of
>feedback. We've swapped out various pieces of equipment, and come to the
>conclusion that the problem is related to a powered advert hoarding outside -
>on the couple of occasions where the hoarding has been down we haven't had the
>problem - if we take power from a different phase further down the road, then
>it gets rid of the problem.
>
>Is there some way to identify and solve the problem ? At a guess we'd need
>something like a 'power conditioner' that removes RFI - but we are in the UK
>so whatever solution we pick will have to work with the mains over here.
>
>Regards,

It'll be the squeals of some poor choirboy being rogered by the
paedophile priest (requirement of the post, I understand). Just call
the police, and it will all be sorted out quickish.

d
Pearce Consulting
http://www.pearce.uk.com