Matrix Audio MRC-8e - Distribution Wiring; Installing the System; New Construction

Matrix Audio Designs
11
RF Interference
Shielded cable is generally not required for audio installations.Although the MRC- 8e/ 8. 4e
does generate radio emissions,and uses a digital signalling path during command entry,
these have been accommodated for in design and conform to RF emission standards.
There is normally no ongoing data communications in the circuit path,but only at the time a
key is depressed.
However many other systems do use microprocessor systems where the cabling may be in
close proximity such as telephone and security systems,and it is possible for different systems
to interfere with each other.If you face an installation where your cable runs are in parallel to
these types of systems you may consider shielded cable to the keypads.In this case ground
the drain wire by connecting it to the chassis of the MRC- 8e/ 8.4e.
Distribution Wiring
In general wiring is installed in a single continuous run between the MRC- 8e/ 8.4e, remote
keypad and the speaker location.Other cable routing options such as a home run to a
common wiring distribution point,integration with home automation systems,or split zone
applications can be significantly different than the general information presented here.
These applications are left to the installer’s discretion and experience.Examples of common
wiring options can be found in the Special Wiring Configurations section of this document.
Installing The System
New Construction
Run the cables inside walls,in the attic and between the joists in the basement or crawlspace.
When running cables in walls,drill the holes in the middle of the studs to avoid having them
damaged by screws or nails that could penetrate the cable.Use metal nail plates where
necessary to protect the cable.
When running cables in the attic or crawlspace,run them in such a way that they will be out
of harm,where they will not be stepped on,snagged,punctured or otherwise damaged,or
could pose a safety hazard.We recommend using electrical cable straps to keep the
installation neat and secure.We do not recommend stapling the cables as a single misplaced
staple can cause a short and causes trouble during operations,and set- up.Do not leave the
wires lying in the dirt under the crawlspace.Neatness counts in a professional installation.