Home Intercom Retrofit

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I recently moved into a home with an old M&S Model 350 intercom.  The
Speakers all seem to work ok,  but the master unit is in bad shape. It
doesn't turn off the program/set time buttons do not work.

I found the DCM3-4 unit online as a retrofit replacement. This looks
like it'll work, but everything I see regarding the installation
indicates that I have to replace ALL the Speaker stations as well.
After inspecing one of the speaker I'm puzzled as to why.  The unit is
extremely simple,  the speaker with a switch to toggle between a
speaker and mic setting.

Can anyone tell me why you would make the old speaker incompatible with
the old system.
Thanks



Re: Home Intercom Retrofit


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That is correct.  The old room station speakers are not compatible with the
new DCM3-4 system.

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It's just the way they designed the new system.  A cynical person might be
inclined to believe they just wanted to sell more new stations.  I spoke to
my M&S rep and he seems to think that's the reason, too.  If you need help
configuring a setup, feel free to contact me.  I carry M&S though I haven't
put all of the components online yet.

--

Regards,
Robert L Bass

=============================>
Bass Home Electronics
2291 Pine View Circle
Sarasota Florida 34231
877-722-8900 Sales & Tech Support
http://www.bassburglaralarms.com
=============================>




Re: Home Intercom Retrofit


One answer might be, emphasis on the "might," is
that some systems
use 45ohm speakers and some use 4ohm speakers.
Will this be a
show stopper?  Maybe.  It depends on amp power,
etc.  If it were
me, I would get a schematic of the new, and if you
can, the old, and
go from there.

Robert L. Bass wrote:
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Re: Home Intercom Retrofit


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True, M&S does use 45-Ohm speakers.  45-Ohm "speaker only" stations from the
old system can be used with the new system.  However, anything with "talk" /
"listen" buttons will need to be replaced.  I spoke with M&S tech support
and they confirm this.

--

Regards,
Robert L Bass

=============================>
Bass Home Electronics
2291 Pine View Circle
Sarasota Florida 34231
877-722-8900 Sales & Tech Support
http://www.bassburglaralarms.com
=============================>



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