1Speakers & Volume ControlsRAT1REMOTE AUTO TRANSFORMERThe RAT1 is an infrared remote controlled stereospeaker volume control with impedance match
10In some cases you may need todrive more than one set of speakersfrom a single RAT1, such as in largerooms or adjoining areas wherecommon volume ope
22A B C ADJ-OFF12345678GLOBALZ-ADJTREBLEVOLMUTEON OFFE-FLAT LAST MAX-V TRIMOFF C-BALBASSINPUTARC68+ PROGRAMMER80 48 10 90 0100 C0 50 D0 4140 A0 30 B0
3Speakers & Volume ControlsWHEN USING 8 OHM SPEAKERSNumber of Speaker Pairs UsedS1 S11 2 3 4 5 6 7 8 9 10 11 12 1
4Procedure for Speakers Other Than 4 or 8 OhmsIn this case, treat all speakers that are rated between 4 and 7 Ohms as 4 Ohm speakers, and use the cha
5Speakers & Volume Controls6. Multiply 1.14 by 8 (for the S8 setting) = 9.12 Ohms.7. Next, calculate the overall paralleled impedance ZO. Since
6If you wish to carry remotes that have the same codes from room-to-room, use a Dedicated IR BusSystem as shown in Fig. 4.5. A 490-30 "Micro Lin
7Speakers & Volume ControlsFig. 3 A RAT1 System Using a Common IR BusRAT112VDC+12 VDCGNDSTATUSIR INEMITTERSIRRCVR789-44CONNECTING BLOCK®S8S4S2S1
8INSTALLATION – DEDICATED IR BUS SYSTEMFig. 4 illustrates an installation where each remote room has a Dedicated IR Bus going to the RAT1 thatcontrol
9Speakers & Volume ControlsFig. 4 A RAT1 Dedicated IR Bus SystemRAT1S8S4S2S1L+L–R– R+L+ L– R– R+AMPLIFIERINPUTSPEAKEROUTPUTSTATUSPOWERIR INSTATU
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