Re: Audio Matrix Switcher

[Marc_F_Hult <MFHult@xxxxxxxxxxxxxxxxxxxxx>]

On Thu, 20 Jul 2006 21:00:27 -0400, "E. Lee Dickinson"
<lee@xxxxxxxxxxxxxxxxxxxxx> wrote in message
<e9p92u$chi$1@xxxxxxxxxxxxxxxxx>:

>Hi Guys,
>
>I've gone around and around on whole house audio, and think I've decided
>just to push normal-ol' line level signals around the house.  I like the
>A-Bus stuff, pretty well, but the multi-source keypads are expensive, as
>are  the multi-source hubs.
>
>I've already got stereos in most rooms, and I have a few spare amps
>around  for rooms where I'd prefer in-wall or ceiling speakers with a
>volume  control.
>
>So, I figure a serial-controlled matrix switcher, 8out, 4in or so? Kramer
>makes an 8x8, which would work fine. And I like Kramer gear, as I've got
>a  good bit of it in my touring video rack.
>
>Anyone have any other ideas? Or shoot, even a home-brew kind of idea?
>

I use Ivie 784 and  884 mixers. They are 8x4 channel gangable to Nx8 (eg
40 x 8).

http://www.ivie.com/pdf/884man.pdf

They run about $50-$150 each on eBay.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7413471637&rd=1&sspagename=STRK%3AMEWN%3AIT&rd=1

New they are $2200 - $2800. (!)
http://www.avsuperstore.com/searchMans.cfm?selMans=159


They32 mixers and other devices can be controlled from a single com port),
optional free Windows control software, optional 0-10vdc input and output
volume control using pots or up-down switches, all inputs can be either
line or mic (w/ microphone preamps), balanced/unbalanced I/O, phantom mic
power, Phoenix-type connectors that accept bare wire, 100db input control
range, DC function outputs to control (eg) external relays that follow
inputs, built-in 20-20khz adjustable sine wave oscillator, and so on.

The 884+ and 884PW differ from the 784+ and 784PW in that the former also
have an automatic mode. Their 8 inputs can gated in any combination with
adjustable Number of Open Microphones (NOM), threshold, off attenuation,
and release time. This is particularly applicable to HA voice control with
multiple microphones where (eg) Shure SCM410 mixers are often
recommended/used/sold at $750 for four channels.
http://www.iautomate.com/scm410.html

... Marc
Marc_F_Hult
www.ECOntrol.org





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