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Home > Archive > Home Automation > June 2005 > Home Intercom Retrofit
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Home Intercom Retrofit
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| sgreenstein@gmail.com 2005-06-16, 2:18 pm |
| 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
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| Robert L. Bass 2005-06-16, 2:18 pm |
| > I recently moved into a home with an
quote:
> 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.
That is correct. The old room station speakers are not compatible with the
new DCM3-4 system.
quote:
> After inspecting one of the speaker I'm
> puzzled as to why...
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
=============================>
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| Art Todesco 2005-06-16, 2:18 pm |
| 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:
quote:
>
>
> That is correct. The old room station speakers are not compatible with the
> new DCM3-4 system.
>
>
>
>
> 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.
>
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| Robert L. Bass 2005-06-16, 2:18 pm |
| > One answer might be, emphasis on the "might," is that some systems use
quote:
> 45ohm speakers and some
> use 4ohm speakers...
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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