Home Intercom Retrofit

May 17, 2005 3 Replies
S

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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R

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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R

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.

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