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Speakers & Volume Controls

RAT1

REMOTE AUTO TRANSFORMER

The RAT1 is an infrared remote controlled stereo
speaker volume control with impedance matching
capability.  It allows individual volume control of from
one to 16 pair of stereo speakers from one stereo
power amplifier, using one RAT1 for each stereo
speaker pair.  It is controlled with any Xantech IR
Receiver or keypad or with Xantech MIRV1 motorized
volume controls.   The RAT1 maintains correct imped-
ance matching between the amplifier and the speak-
ers with the use of instant setting S1 to S8 jumpers,
located on the unit.  This eliminates the need for
separate impedance matching devices in multi-room
installations.

FEATURES AND SPECIFICATIONS

• 10-position relay driven stepped auto transformer design.

• Tri-Fi™ winding system for highest quality audio performance.

• Amplifier Input: 4-screw plug-in connector.

• Speaker Output:  4-screw plug-in connector.

• IR, STATUS & +12V:  4-screw plug-in connector.

• STATUS Input Jack: 2.1mm coaxial type.

• POWER Input Jack (+12V):  2.1mm coaxial type.

• Power Consumption: 300 mA @ +12V DC.  Use Xantech Model 786-00 or 782-00  Power Supply.

• Requires IR commands from the RC68+ (or RC68) Programmer or from the MIRV1, for volume

operations.

• Using the RC68+ Programmer, internal E

2

 PROM can be set to different group codes for independent

operation of RAT1's when on a common IR bus.

• Factory preset Group Code number is 30.

• Independent grounds between channels.

• 75 watts per channel music power, 25 watts per channel continuous.

• Frequency response:  20 Hz - 20,000 Hz 

±

1 dB at 1 Watt power input.

• Attenuation:  10 steps at 3 to 6 dB per step, 35 dB maximum.

• Impedance Multiplier Settings: S1, S2, S4, & S8.

• Plug-in connectors accept wire sizes from 24 to 12 gauge.

• "Flat Pack" design permits easy mounting.

• Dimensions: 8"  x 4-1/8" x 2-5/8" (203mm x 105mm x 67mm).

Fig. 1

  The RAT1

S8

S4

S2

S1

L+ L– R– R+

L+ L– R– R+

AMPLIFIER

INPUT

SPEAKER

OUTPUT

STATUS

POWER

IR IN

ST

A

TUS

GND

+12 VDC

12VDC

RAT1

REMOTE  AUTO TRANSFORMER

INSTALLATION INSTRUCTIONS

Содержание RAT 1

Страница 1: ...lug in connector IR STATUS 12V 4 screw plug in connector STATUS Input Jack 2 1mm coaxial type POWER Input Jack 12V 2 1mm coaxial type Power Consumption 300 mA 12V DC Use Xantech Model 786 00 or 782 00...

Страница 2: ...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 Useful for audio scene ambian...

Страница 3: ...rmine the minimum safe amplifier operating load impedance refer to the manufacturer s specifications 4 Find the correct jumper position from the above charts 5 Place the jumpers in the same position o...

Страница 4: ...inimum safe operating load impedance 1 Calculate the total paralleled impedance of the 4 Ohm group first by dividing 4 Ohms by 2 4 2 2 Ohms 2 Multiply 2 by 4 for the S4 setting 8 Ohms 3 Calculate the...

Страница 5: ...LLATION COMMON IR BUS SYSTEM Fig 3 illustrates a typical installation using three RAT1 s along with other Xantech products in a 4 room multi room system The principles shown should be used as a guide...

Страница 6: ...outlet on the A V receiver or amplifier system When the switched outlet is ON 12 Volts from the 786 00 passes through one of the 4 bus conductors STATUS line to the LED indicators NOTE A resistor can...

Страница 7: ...Receiver R L MAIN ROOM EQUIPMENT AREA ETC 782 00 Power Supply To 120 V AC unswitched 786 00 STATUS power supply Plug into a SWITCHED AC Outlet on A V Receiver see text A V RECEIVER AMPLIFIER ETC Back...

Страница 8: ...onal 793 00 s These can be easily daisy chained as shown in Fig 5 5 SinceaDedicatedIRBussystemisused eachoftheRAT1 s andMIRV1 s canoperatewiththesame IR Code Group number In this case the Code Group n...

Страница 9: ...2 00 Power Supply To 120 V AC unswitched A V RECEIVER AMPLIFIER ETC Back Panel IR Receiver i e cabinet mounted for IR control in main room 283 00 Emitter 283M Blink IR Place on FRONT Panel IR Sensor C...

Страница 10: ...EA ST G V ST G V FROM AMPLIFIER SPEAKER TERMINALS 786 00 Status Power Supply 782 00 Power Supply To 120 VAC unswitched IR IR Fig 6 Driving Two Speaker Pairs From One RAT1 INSTALLATION cont d 12VDC 12...

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