Subject: From: Date:

Re: [ECS] Oh, another issue Dave Kolb Mon, 14 Jun 1999 21:20:05 -0400

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Michael,

Thanks for the explanation though I'll need to chew on it for a while. I'm
one of those software types trying to understand the EE world better.

What I'm toying with is a) have the sound card drive one of four line level
inputs to a bank of stereo receivers (4 or 5) that will drive my audio zones
(two rooms per zone) and use IR to select the input source and A|B|A+B in
each zone or b) use some small dedicated speakers in several rooms and drive
them along the lines of what you are doing by turning certain ones on and
off with relays. I understand the first solution and your input will
hopefully help me evaluate the second.

Dave Kolb

-----Original Message-----
From: Michael David <michael@michaeldavid.com>
To: ecs-list@netbloc.com <ecs-list@netbloc.com>
Date: Monday, June 14, 1999 8:43 PM
Subject: RE: [ECS] Oh, another issue


>Hi Dave!
>
>Sure - it's really simple:
>
>I have 16 ceiling speakers throughout the house.  To drive those speakers,
I
>take the output of my sound card into the primary of a 70volt speaker
>transformer.  The output of that transformer feeds the 16 relays on one of
>my Redacs.  The output of those relays in turn feeds the secondaries  of 16
>different 70volt transformers.  The primaries of these 16 transformers feed
>the speakers in each room.  Make sense?  I then use ECS to close
>one/some/all of the relays depending on how widespread the message to be
>spoken needs to be.
>BTW, the amp in the sound card is plenty loud enough, in fact, I only have
>it up about 3/4 of the way.
>
>Cheers!
>
>Michael David
>michael@michaeldavid.com
>
>
>
>
>
>-----Original Message-----
>From: Dave Kolb [mailto:davekolb@email.msn.com]
>Sent: Monday, June 14, 1999 8:07 PM
>To: ecs-list@netbloc.com
>Subject: Re: [ECS] Oh, another issue
>
>Michael.
>
>Would you consider posting your general hardware setup in regards to audio
>announcements? I would like to do something similar as part of a paging or
>intercom style system.
>
>Thanks,
>
>David Kolb
>
>
>

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