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System layout considerations
The MR640 is the heart of a whole home music system. A MR640
is designed to work with 1-6 rooms or zones. Up to three
MR640's and/or MVP64's can be ganged together to allow up to
18 rooms or zones each individually controlling one or two pairs
of enclosure or inwall speakers. Connection is achieved via the
data port using a stereo 3.5mm jack on the rear of the MR640.
Rooms are usually controlled by a MR60 keypad. The MR60
contains an almost all brand infrared repeater and most functions
can be controlled by the Knoll RB8 remote control. RB8
commands can easily be stored in a learning remote. The MR60 is
available with three different source layouts (all of the MR60
keypads in one system have to have the same source layout) and
three bezel colors white, almond and ivory for a total of 9 models.
The source layout and bezel colors are easy to change in the field.
Some rooms will not require a MR60 keypad and most MR640
functions can be utilized with an RB8 remote and an infrared
repeater (a MR173 IR converter is required). Up to three IR
receivers in three different rooms can be connected to a single
MR173 (see information shipped with the MR173). The MR640
includes four internal single or dual emitter connection ports, so
emitters will have to be ordered if required. The infrared pass
through is always available when the controller is turned on and in
standby or powered up.
In certain commercial applications a microphone paging override
is required. Model MR171 paging and override module takes a
balanced or unbalanced mic, (with automatic phantom power) or a
line level input and when activated overrides all inputs (even if
some or all zones are in standby) and pages at an adjustable preset
volume in all zones.
A variety of door chime, video switching, telephone paging, door
entry and front door camera modules are being developed. Check
our web site for more information.
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The MR640 includes a 12VDC trigger output to control and power
various items when the MR640 is powered up. When the MR640
goes into standby the trigger output ends. It's maximum output is
60mA.
In certain cases when several high powered amplifiers will be
controlled by the MR640, a delayed turn on sequence is required
to turn on the amplifier so a fuse will not trip or just cause a low
voltage situation in the house. The MR166 turn on sequence is
used to sequentially delay the trigger turn on to 6 trigger inputs in
1.5 second or 3 second delay sequences. The MR166 is also
buffered in case the 60mA output from the MR640 is insufficient.
An innovative IR connection system is also included to turn on and
off the various source components as well as four separate
commands. A Xantech 590-00 controller is required for this
purpose. The Xantech 590-00 is a an IR sequence generator. When
it receives commands from the MR640 it generates an IR
command or sequence of up to 10 commands. The on command is
automatically generated when the MR640 goes out of standby and
into power up. The off command is automatically generated when
the MR640 goes from power on to standby. These sequences are
generally used to turn on and off the source equipment.
To activate the four FNC commands on the MR60 keypad (only
when the system is powered up) press the MR60 keypad button
FNC then quickly press one of the four source buttons on the top of
the MR60 keypad. This will initiate a pulse at the MR640
FUNCTION output, that in turn generates an IR command that is
pumped back into the MR640 IR emitter port 1 and out to the
various emitters connected to ports 2-3-4, that will initiate the
command to the source component.
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