INSTALLATION INSTRUCTIONS
MIRV1
IR/MOTORIZED VOLUME CONTROLLER
The MIRV1 is an IR or manually operated volume controller that works in conjunction with the RAT1 Remote
Autotransformer or the RGC11 Remote Gain Control Modules. Together, they allow speaker or line level
volume control in any room, using a standard 3 or 4-conductor Xantech IR bus system. You can also use
two or more MIRV1's in the same room or listening area, for convenient manual operation, or in conjunction
with a Xantech IR receiver for both remote and manual volume operations. Knob mounted indicator allows
visual verification of volume rotation and position and also serves as a system power ON/OFF (status)
indicator.
Insert
Plate
+12VDC
GROUND
STATUS
MOTORIZED VOLUME
CONTROLLER
SYLMAR, CA
MIRV1
IR IN
2-1/2
(64mm)
Fig. 1 The MIRV1
LED
Status
Indicator
2-1/16
(53mm)
FEATURES AND SPECIFICATIONS
• Servo action causes multiple MIRV1's to automatically track each other's position and simultaneously
drive the RAT1 or RGC11 volume settings.
• LED in knob blinks with knob rotation and also serves as a system ON/OFF status indicator.
• Requires IR commands from the RC68+ (or RC68) Programmer, or manual rotation, for volume
operations.
2
• Using the RC68+ Programmer, internal E
PROM can be set to different group codes for independent
operation of MIRV1's in a common IR bus system.
• Factory preset Group Code number is 30.
• Plug-in 4-terminal screw-type connector for IR, STATUS and +12V.
• Recommended wire for 4-conductor bus: 24 gauge solid or stranded wire up to 150', 22 gauge up to 400',
20 gauge up to 1500' and 18 gauge up to 4000' (unshielded OK).
• Power: 12V DC @ 60 mA. Powered directly or from a RAT1.
• Use decorator-style wall cover plate.
• One nut disassembly allows custom painting of Insert Plate.
• Knob and plate are pre-finished in either white (MIRV1-W) or ivory (MIRV1-I).
• Fits standard single gang J-box.
• Depth behind plate: 2-1/8 inches.
Speakers & Volume Controls
1
RC68+ PROGRAMMER / REMOTE CONTROL
The RC68+ (or RC68) programmer (available separately) contains all the commands necessary to operate
the MIRV1.
• You will need it to program universal learning devices such as the Xantech URC-1 learning remote, the
Xantech Smart Pads, the 590 Programmable Controller, the 710 Fone Link, etc., with commands that
operate the MIRV1, RAT1 and the RGC11.
• NOTE: The RC68+ codes operate several other Xantech models as well, such as the RS41AV, RP41AV,
only
ZPR68, etc. Therefore,
the button descriptions that apply to the operation of the MIRV1 with the
RAT1 are listed below. All others should be ignored.
CAUTION: While the RC68+ can be used as a handheld remote control, it is highly recommended it not
be given to the final user for the following reasons:
• Since it includes selectable code groups, the user may inadvertently alter the installer configurations.
• Also, since the user will require IR commands from other brands of equipment to control the total system,
in addition to those of the MIRV1, all commands should be consolidated into one learning device, for ease
of use.
APPLICABLE RC68+ BUTTON DESCRIPTIONS
1. IR Emitter Lens
2. Instant Volume Presets. These buttons allow direct preset activation of any of the 10 volume steps
on the RAT1. This is useful for "audio scene" ambiance settings for rooms or an instant partial mute
action.
The relationship of the RC68+ buttons to the MIRV1 and RAT1 volume step positions is as follows:
Volume Step #
RC68+ Button MIRV1 RAT1
1
A 1 (Off, Min Vol)
MUTE
A
2
VOL
3
4
RC68+
B 2 1 (Off, Min Vol)
C 3 1 (Off, Min Vol)
ADJ-OFF 4 2
153
264
375
486
597
5
A B C ADJ-OFF
80 48 10 90 01
1234
00 C0 50 D0 41
INPUT
5678
40 A0 30 B0 21
GLOBAL
20 E0 70 F0 61
TREBLE
BASS
Z-ADJ
60 88 18 98 09
08 A8 38 B8 29
ON OFF
28 E8 78 F8 69
E-FLAT LAST MAX-V TRIM
68 C8 58 D8 49
OFF C-BAL
E1 89 C9 A9 E9
71 19 59 39 79
F1 99 D9 B9 F9
6108
7119
8 12 10 (Max Vol)
Fig. 2 The RC68 Programmer
3. VOLUME Up/Down buttons. Each individual press will cause the RAT1 to increase or decrease
volume level by one step, over a total of 10 steps. Each step causes a change of 3 to 6 dB/step and
a maximum attenuation of 35 dB to the lowest active step (#2). The lowest step (#1) switches the signal
off.
When buttons are held down, the volume level will change continuously.
NOTE: The MIRV1 will rotate to positions that correspond to each of the above RAT1 volume levels
as the RC68+ commands are executed.
2
MIRV1
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