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Model MRC88 / MRAUDIO8x8 

 

Page: 21 

 

© 2005 Xantech Corporation 

2.  If mounted in an equipment cabinet or other confining location, allow at least 2 inches of space above the 

top cover.  Be sure there are large openings in the shelf below the unit and in the cabinet to allow the entry 
of cool air and the escape of warm air. 

3.  If the cabinet contains other heat generating components or you are using several MRC88's in a large multi-

zone system, you will have to pay even closer attention to adequate ventilation. 

4.  Do not hesitate to use fans (quiet, boxer type), if necessary, to ensure a constant flow of air through the 

MRC88's and the other heat generating components. 

5.  When mounting in a 19" (483mm) rack, adding a single RU (Rack Unit) spacer above and below the 

MRC88 will improve convection in heavy use applications. 

Note: Rear support may be required. 

 

[One Rack Unit size = 1-3/4" (44.5mm) in height]. 

6.  In multi-zone installations, you will have large bundles of wire and cable to accommodate audio, video and 

speaker connections.  Be sure to allow enough room for the leads and dress them in such a manner so as 
not to block airflow. 

7.  The MRC88 is designed for mounting on flat horizontal surfaces. When mounting into a 19" rack, use a 

proper rack shelf or drawer (i.e. Middle Atlantic or equivalent) 

8.  Do not remove chassis feet.  They are necessary to provide proper ventilation. 

NOTE:

  You should consider some sort of rear support for rack mounted units when used in mobile 

applications or when located in seismically active areas. 

(EXPANDED) 

Place Controllers on separate shelves or provide 2 inches of space between Controllers for ventilation. 
 
 

MRC88 KEYPAD PHYSICAL LOCATION AND MOUNTING 
(BASIC/ADVANCED/EXPANDED) 

 

   

  

RJ45

Connector

Cat 5

Cable

MRC44

Keypad

Ground

Lug

To Earth Ground

 

 

Figure 6 - Mounting and Installing the MRC88 Keypad 

 

Keypad mounting for the MRC88 Keypad does not require a junction box. The MRC88 keypad can be mounted 
on drywall, lath & plaster, button board or other surfaces covering a hollow wall. Follow these simple 
procedures to install the provided MRC88 mounting bracket and keypad: 

NOTE: 

Check local electrical codes. Some areas require a backbox in certain applications. For installations that 

require a back-box, see Xantech Part# MRCBOX. The MRC88 keypad will not fit in a standard 2-gang box. The 
Xantech MRCBOX must be used in applications that require a backbox. 

 

1.  Cutting the hole 

a.  Mark the desired mounting location for the center of the keypad. 

Summary of Contents for MRC88

Page 1: ...components and the MRC88 system A Programmable Learning Remote such as the Xantech URC2 is recommended for integrating the IR commands of the MRC88 and source components into a single controller Comp...

Page 2: ...ressed Pressing of the Source Button will reverse the source icon on the LCD Display and sends IR commands programmed to the button if any to the corresponding source and common emitter outputs as wel...

Page 3: ...20 IR Sensitivity Adjustment Carefully adjust for background light level to prevent false triggering of the IR circuits Slowly turn counter clockwise to reduce sensitivity 21 LCD Backlight Adjustment...

Page 4: ...Inputs 1 Audio Video RCA Harness Capable of Audio Left Right and Video 1 Pair of speakers with Speaker Cable properly terminated into a 4 conductor WECO Plug Will be used to test Speaker outputs 1 TV...

Page 5: ...ypad is transmitted along the CAT5 cable Incorrect wiring on this cable can destroy the MRC Keypad Please test the cable connections using a proper CAT5 cable tester or using a Multimeter to check Pin...

Page 6: ...RC88 is designed for mounting on flat horizontal surfaces When mounting into a 19 rack use a proper rack shelf or drawer i e Middle Atlantic or equivalent 8 Do not remove chassis feet They are necessa...

Page 7: ...ine of the template being sure that your cut is on the outline Any cut outside of the outline by more than may not be covered by the MRC88 Keypad 1 2 Figure 8 Installing the MRC88 Keypad mounting brac...

Page 8: ...nstallation optional a Position Back Box so inner rectangle is in a horizontal position as shown in Figure 8B b Affix MRCBOX to Wall Stud at desired height with front of box flush with front of stud o...

Page 9: ...or a typical MRC88 system layout and interconnections SOURCE RELATED CONNECTIONS The following relates to all source related connections to the MRC88 Controller Unit A V In Out IR Control Sense Inputs...

Page 10: ...CONNECTIONS BASIC ADVANCED The sense input connection will typically be used to sense the power state of a source component using the Xantech CSM1 Current Sense Module optional Plug the 3 5mm mini plu...

Page 11: ...6 Since the connectors are removable you may unplug them for ease of lead assembly 4 As a rule of thumb use 18 gauge speaker wire for speaker runs up to 30 9m 16 gauge up to 70 21m and 14 gauge up to...

Page 12: ...iring on this cable can destroy the MRC Keypad Be sure to test cable for proper connections before making connections VIDEO CONNECTIONS MRC88 ONLY BASIC ADVANCED EXPANDED Composite Video 1 When runnin...

Page 13: ...cables connect the Preamp Out Left L and Right R connectors Figure 3 25 to the desired external amplifiers Audio Left and Right Input connectors CO1 AND CO2 ZONES 7 8 BASIC ADVANCED EXPANDED Zones 7 a...

Page 14: ...Address jumpers on the rear of the keypad Figure 5 17 according to Table 1 below Keypad Address Setting Application JP1 JP2 First or Single Keypad in Zone Primary Keypad connected directly to MRC88 C...

Page 15: ...greater than 8 Zones two MRC88 Controller Amplifiers can be linked together for systems up to 16 Zones Zone expansion is only available in Advanced programming configurations LINKING TWO MRC88 CONTRO...

Page 16: ...STOP PAUSE FF REW VOL VOL MUTE POWER CH CH STATUS SELECT PLAY STOP PAUSE FF REW VOL VOL MUTE D 250 feet max 76 m MRC44 Connecting Block PWR V G S IR RCVR 780 80 CFL DIRECT SUNLIGHT FRIENDLY IR RECEIV...

Page 17: ...SIC ADVANCED EXPANDED SPEAKER PHASING TO OBTAIN STABLE IMAGING AND FULL BASS RESPONSE IT IS IMPERATIVE THAT STEREO SPEAKERS BE CONNECTED IN PHASE WITH EACH OTHER YOU CAN VERIFY THIS AS FOLLOWS 1 If th...

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