Russound R1250MC Stereo Amplifier User Manual
Contents
1. Zone 6 Semar RaRussound Newmarket NH USA k SS Bus Input Output The bus line input is an optional Fuse Receptacle Holds a replaceable fuse for AC input that can be used to connect a single source to multiple zones The bus line output is a passive passthrough of the bus input and can be used to daisy chain the source to other amplifiers in the system Line Input The line audio input for each zone is a dedicated sensing input that will activate the zone when an audio signal from a source is present Line Bus Switch Sets the zone input to the Line audio input or the Bus input Speaker Outputs The A and B speaker outputs are in parallel to the amplifier output The minimum speaker impedance for stereo mode operation is 4 ohms for one pair and 8 ohms for two pairs of speakers The minimum impedance for bridged mode operation is 8 ohms for Speaker B only Gain Controls Left and Right gain controls inde pendently adjust the sound level for each channel When used in the bridged mode only the Left con trol is used Power Switch Turns the amplifier on off This switch does not disconnect the main power feed from the amplif2. RI Left Speaker 8 ohm THERMAL PROTECTION All Russound amplifiers are designed with special circuit ry to safeguard the amplifier under a thermal overload condition Thermal protection mode can only engage when the unit has been run at high volume for extended periods of time without adequate ventilation and or when speaker impedances are below the minimum levels for the amplifier If this fault occurs turn off the amplifier and check that the speaker impedance rating is above the minimum rating Also check for adequate ventilation around the amplifier and make adjustments if necessary Once the unit has cooled to safe operating tempera tures the amplifier may be powered back on R1250MC AMPLIFIER Following the Bridge mode markings in red on the back of the amplifier Connect the negative lead of the speaker cable to the R terminal Connect the positive lead of the speaker cable to the L terminal Set the Stereo Bridge Mono switch to Bridge Mono connect the Line In feed from a source to the Left Line In connection and restore power to the amplifier RCA Cable from source Right In Negative Speaker cable Positive RI Right Speaker 8 ohm PROTECTION CIRCUITRY All Russound amplifiers are designed with special circ
3. RIRussound R Series R1250MC 6 Zone 12 Channel Power Amplifier User s Manual IMPORTANT SAFEGUARDS RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALE FIED SERVICE PERSONNEL The lightning flash with arrowhead symbol within an equilateral h triangle is intended to alert the user to the presence of uninsu lated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompa nying the appliance SAFETY INSTRUCTIONS 1 Read Instructions All the safety and operating instructions should be read before the appliance is operated 2 Retain Instructions The safety and operating instructions should be retained for future reference 3 Heed Warnings All warnings on the appliance in the operating instructions should be adhered to 4 Follow Instructions All operating and user instructions should be followed 5 Water and Moisture Do not use this appliance near water for example near a
4. H 250V 240V F 1 25A H 250V 2 3 4 5 6 wl ow iw 2 ow fin 3 our FORET KO Viggo funo 3 D Mi O CO 0O OQO ier keg aei j ZONE OUT CAV6 6 Controller R1250MC Amplifier Line In L OKO Linen L Bridge h onon JEHA B E BE B id H A 2 3 5 R Russound Newmarket NH USA sf A HHH a O a Bridged Independent Stereo SPECIFICATIONS Single Zone Maximum Output Power 0 1 THD N f 1 kHz All Zones Continuous Output Power THD N Signal to Noise Ratio Frequency Response Input Sensitivity Input Impedance Voltage Gain Delay Time Input Trigger Output Trigger Power Requirements Power Requirements Dimensions Weight WARRANTY R1250MC AMPLIFIER 50W per channel 2 channels at 8 ohms 80W per channel 2 channels at 4 ohms 140W at 8 ohms 2 channels bridged 35W per channel 12 channels at 8 ohms 50W per channel 12 channels at 4 ohms 100W at 8 ohms each
5. bathtub washbowl kitchen sink laundry tub in a wet basement or near a swimming pool Do not expose the appliance to dripping or splashing and do not place on the appliance objects filled with liquids such as vases Do not touch the amplifier with wet hands Do not handle the amplifier or power cord when your hands are wet or damp If water or any other liquid enters the amplifier cabinet take the amplifier to qualified service personnel for inspec tion 6 Cleaning The appliance should be cleaned only as recommended by the manufacturer From time to time you should wipe off the front and side pan els and the cabinet with a soft cloth Do not use rough material thinners alcohol or other chemical solvents or cloths since this may damage the finish or remove the panel lettering 7 Ventilation The appliance should be situated so that its location or position does not interfere with its proper ventilation For example the appliance should not be situated on a bed sofa rug or similar surface that may block the ventilation openings or placed in a built in installation such as a book case or cabinet that may impede the flow of air through the ventilation open ings Place the unit in a wellventilated location leaving at least 2 inches 5 cm of clearance on all sides top and rear of unit for air flow If ventilation is blocked the unit may overheat and malfunction 8 Heat The appliance should be situated away from heat sources s
6. e appliance and cart combination to overturn gt 6 Wall or ceiling Mounting The appliance should be mounted to a wall or ceil ing only as recommended by the manufacturer 17 Location of the Amplifier Do not mount this unit under a kitchen cabinet Do not expose the amplifier to direct sun light or heating units as the amplifier internal components temperature may rise and shorten the life of the compo nents Avoid damp and dusty places 8 Object and Liquid Entry Care should be taken so that objects do not fall and iquids are not spilled into the enclosure through the openings Servicing The user should not attempt to service the appliance beyond that described in the operating instructions All other servicing should be referred o qualified service personnel 20 Damage Requiring Service The appliance should be serviced by qualified service personnel when The power supply cord or the plug has been damaged or Objects have fallen or liquid has been spilled into the appliance or The appliance has been exposed to rain or The appliance does not appear to operate normally or The appliance has been dropped or the enclosure is damaged Ne mMm0UOWD D gt C US 227897 INTRODUCTION The Russound R1250MC is a 12 channel power amplifier and is ideal for use as the main amplifier in home theater and distributed audio systems The 12 channels are arranged in pairs to provide amplification for six stereo zo
7. ier this requires that the power cord be unplugged from the outlet power input connection Fuse rating for North America and Europe is T1OAL 250V AC Input The AC voltage input for the North American model is 120VAC at 60Hz for the European model 230VAC at 50Hz This receptacle accepts a 3 prong IEC 320 type connector A detachable 3 terminal power cord is included 12VDC Trigger In Out The 12V Trigger In is used to activate the zone The Trigger Out provides 100mA 12V max This can be used to drive other 12V triggered devices The delay and audio sensing are bypassed when the 12V trigger input is used Delay Time Muting delay can be adjusted from about 0 5 minute to 4 5 minutes When an audio signal is not present the amplifier will automatically go into standby mode after the preset period of time When set to maximum the amplifier will stay active and not go into standby Stereo Bridge Mono Switch Sets each zone EE amplifier for stereo or bridged mono operation BRIDGED OPERATION When the amplifier is in Bridged mode operation both the left and right channels are combined for a higher power mono output For bridged amplifier operation turn off the power to the amplifier and connect an 8 ohm minimum load to the Speaker B output SE z R Bridge Mono L Ja DelayTime ORIO Out Trigger In 12V 100mA
8. irs the unit must be shipped to Russound at the owners expense along with a note explaining the nature of the service required Be sure to pack in a corrugated container with at least 3 inches of resilient material to protect the unit from damage in transit Russound sells products only through authorized Dealers and Distributors to ensure that customers obtain proper support and serv ice Any Russound product purchased from an unauthorized dealer or source including retailers mail order sellers and online sellers will not be honored or serviced under existing Russound warranty policy Any sale of products by an unauthorized source or other manner not authorized by Russound shall void the warranty on the applicable product RINT ele are i R Series R1250MC Power Amplifier User s Manual 5 Forbes Rd Newmarket NH 03857 USA Tel 603 659 5170 e Fax 603 659 5388 e mail tech russound com 28 1168 04 22 05
9. nes The R1250MC provides an array of useful fea tures such as bridge mode operation independent zone triggering bus inputs and multiple speaker outputs per zone to meet a wide variety of applications and configu rations FRONT PANEL R1250MC AMPLIFIER The R1250MC is rated at 50 watts per channel into 8 ohms and 80 watts per channel into 4 ohms With the Stereo Bridge Mono switch in the Bridge mode position both channels in the zone are combined fora higher pow ered mono output In bridged mode the R1250MC pro vides 140 watts of power into a single 8 ohm load All this power is backed by three high output toroidal trans formers Each amplifier output channel incorporates robust protection circuitry for safety and reliability under extreme circumstances RussouND RI1250MC POWER AMPLIFIER Zone Indicator LEDs The six LEDs correspond to the six stereo zone amplifiers The LED will illuminate red when the amplifier power is on and the zone is in standby The LED will illuminate green when the zone is active RACK MOUNTING The R1250MC amplifier can be rack mounted using the included rack mount ears and hardware to attach the ears to the amplifier The amplifier will take 3 rack spaces with the feet removed R1250MC Side View Rack Ear Screw Holes Rack Ear Rack Ear Front View Side View R1250MC AMPLIFIER EO 2
10. uch as radi ators heat registers stoves or other appliances including amplifiers that produce heat 9 Grounding or Polarization Precautions should be taken so that the grounding or polarization means of an appliance is not defeated 10 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them paying particular attention to cords at plugs receptacles and the point where they exit from the appliance 11 Power Sources The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appli ance 12 Main Power Disconnect The power switch is a single pole switch When the switch is in the Off position the appliance is not completely disconnected from the main power The main power plug is used as the disconnect device and shall remain readily operable When installing the product ensure that the plug is easily accessible 13 Non use Periods The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time 14 Attachments Only use attachments accessories specified by the manufac turer 15 Carts and Stands The appliance should be used only with a cart or stand that is recommended by the manufacturer An appliance and cart combination should be moved with A care Quick stops excessive force and uneven surfaces 2 may cause th
11. uit ry to safeguard the amplifier under a short circuit condi tion A faulty speaker can also cause a short circuit con dition The front panel LED illuminates orange when the amplifi er is in short circuit protection If this fault condition occurs turn off the amplifier and check speakers for short circuit conditions when appropriate R1250MC AMPLIFIER POSSIBLE SYSTEM CONFIGURATION The R1250MC can be configured as the main amplifier for an audio distribution system or home theater system When used with an audio distribution preamp each zone can independently drive one of several different sources by using each zone s individual line audio inputs or a pair of zones can be bridged to create a higher powered zone When the R1250MC is used as a home theater amplifier three zones can be bridged to provide high power for the front and center channels and the remaining zones can be used for the surround effects LAO KEYPAD PORTS S ti i ui l ML i ti l i a 12V TRIGGER HRissound je 7 Russo ave COR a 24VDC 2 5A IN our 1 2 3 A BUS READY SUB ZONES ZONE AUDIO To AMP amp VIDEO OUTPUTS J CJ Source Auno VIDEO Connections J 8 8 COTAT OEO Sode 1050 3050 3 CO O gt CORON 5958505 gt DESIGNED IN USA MADE IN KOREA 110V F 3 0A
12. zone bridged lt 0 05 from 20Hz to 20kHz gt 100dB 20Hz to 20KHz 0 3dB 70mV for 1W at 8 ohms 500mV for 50W at 8 ohms 47kohms Line Input 32dB 0 5 to 4 5 minutes 12VDC 10 kohms 12VDC 100mA North American Model 120VAC 60Hz 7A IEC 320 type connector with 3 terminal detachable power cord Fuse Rating TLOAL 250V European Model 230VAC 50Hz 4A IEC 320 type connector with 3 terminal detachable power cord Fuse Rating TLOAL 250V 17 W x 16 5 D x 5 875 H 43 x 42 x 15 cm 48 9lbs 22 2kg The Russound R1250MC is fully guaranteed for two 2 years from the date of purchase against all defects in materials and work manship During this period Russound will replace any defective parts and correct any defect in workmanship without charge for either parts or labor For this warranty to apply the unit must be installed and used according to its written instructions If service is necessary it must be performed by Russound The unit must be returned to Russound at the owners expense and with prior written permission Accidental damage and shipping damage are not considered defects under the terms of the warranty Russound assumes no responsibility for defects resulting from abuse or servicing performed by an agency or person not specifically author ized in writing by Russound Damage to or destruction of components due to improper use voids the warranty In these cases the repair will be made at the owners expense To return for repa
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