paging system problem

[TMI]

Hi all,

Years ago TOA had the sidearm of distributed PA impedence meters. I
also have an Sennheiser and they are the right way to do things. If
you look in Don Davis' Sound System Engineering (given to me by BD at
Sound Equipment Corporation 31 years ago) there is a plan for a simple
circuit a filiment transformer with a light bulb in series that causes
speakers without the correct transformers to "climb out of the
ceiling" an make themselves known. It is more durable and less
expensive than using amplifiers.

Get some flavor of audio impedence meter and build one of these if you
make your living on 70v and 25v systems.

Tom Maguire

 

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Hi all,

Years ago TOA had the sidearm of distributed PA impedence meters. I
also have an Sennheiser and they are the right way to do things. If
you look in Don Davis' Sound System Engineering (given to me by BD at
Sound Equipment Corporation 31 years ago) there is a plan for a simple
circuit a filiment transformer with a light bulb in series that causes
speakers without the correct transformers to "climb out of the
ceiling" an make themselves known. It is more durable and less
expensive than using amplifiers.

Get some flavor of audio impedence meter and build one of these if you
make your living on 70v and 25v systems.

Tom Maguire






- Show quoted text -

Well I've learned to never again take a used "working" paging
amplifier out to a job again with out first bench testing it for RMS
power output. Or worse yet as I guess I did, assume that one already
in service was ok.. Lenny.