OSD Audio MX1260 audio amplifier
Contents
1. MX 126 Multi Zone Amplifier OWNER S MANUAL 775 Columbia St Brea CA 92821 562 697 2600 www OSDAudio com BOSD FG e TO PREVENT FIRE OR SHOCK HAZARD DO NOT USE THIS PLUG WITH AN EXTENSION CORD RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE e TO PREVENT ELECTRICAL SHOCK MATCH WIDE BLADE PLUG TO WIDE SLOT FULLY INSERT f CAUTION N RISK OF ELECTRIC SHOCK DO NOT OPEN This Lighting flash with arrowhead Warning To reduce the risk of The exclamation point within the Symbol within an equilateral triangle Electric shock do not remove Equilateral triangle is intended to Is intended to alert the use to the Cover or back no user Alert the user to the presence of Presence of un insulated dangerous Servicing to qualified service Important operating and Voltage within the products enclosure Personnel Maintenance servicing That may be of sufficient magnitude Instructions in the literature To constitute a risk of electric shock Accompanying suppliance To persons IMPORTANT SAFETY INSTRUCTIONS Read these instructions Keep these instructions Read all warnings Follow all Instruction Do not use this apparatus near water Clean only with dry cloth Do not block any ventilation openings Install in accordance with the manufacturers instructions Do not install near heat sources2. the return sS 2 LINE IN tt This unit should not be HOSD Baudic MX 1260 L ZONE 6 R Sens ff Sens Sens O TOCO BUS 1_2 LINE IN p E LINE IN O LINE IN O LINE IN O O R SPEAKER BUS 1_2_LINE IN pone SPEAKER EE E o Cae BRID we Do Fuse T8AL 250VAC FOR 115VAC 60Hz ME use T4AL 250VAC FOR 230VAC 50Hz shipped back to OSD Audio without the RA DO NOT attempt to open or dismantle this amplifier THIS WILL VOID THE WARRANTY SYMPTOM Very little or no sound on some or all channels No sound on one channel pair and zone LED is red Hum from all the speakers Sound is distorted on one or more channels at normal volume Bass is weak and stereo sound is phasey POSSIBLE CAUSE AND TEST PROCEDURE 1 Check the SEN ADJ knob that it is not turned down 2 Check input switch is in correct position Check your configuration and verify all settings 3 Audio cable to the input is bad Connect the nonworking channel to a cable known to be good 4 Bridging switch is in the wrong position 1 Check that connections are secure and that there are no loose strands of wire crossing from positive to negative terminals at the back of the amplifier and or speaker 2 Disconnect the speaker wire at both ends Separate the two conductors at both ends and test with a meter for a short circuit If there is no short connect the two conductors at one end a
3. the positive terminal of the amplifier Do the same with the negative and then follow the same procedure with all channels Amplifier Connection Always turn off the power of your amplifier processor preamp and all input playback units before any connections are made Before turning your amplifier and preamp back on make sure your volume is turned all the way down Remember the cooling issues mentioned earlier in this manual Improper airflow will reduce the life of the amplifier When deciding on the final location keep in mind that there needs to be adequate space behind the amp to fit the speaker cables and patch cables Stereo Connection Use a good quality RCA type patch cord Connect the right and left output from the processor to the right and left input jacks on the back of the amplifier Repeat this for each channel and or zone The Mode switch should be in the Stereo position Connect the speaker cable coming from each pair of speakers to the Speaker Input connector on the back of the amplifier This connector is removable to make connection easier When connecting the cable to the connector check for any wire strands that might be sticking out of the connection terminal that could cause a short When connecting the speaker cable make sure the speaker and amplifier are in phase positive and negative are matched properly See the above section on Speaker Phasing These
4. US inputs are used to input audio sources such as a preamp CD tuner and MP3 player over multiple zones For example you could have a CD player on BUS 1 that goes to zones 1 and 2 and an MP3 player on BUS 2 going to zones 3 and 4 The other two zones could have independent input sources When designing a single source multiple zone system this mode is perfect Use a good quality RCA type patch cord Connect the right and left outputs from the preamp to the right and left input connectors on the back of the amplifier Repeat this for each channel and or zone Then with the zones on which you want to access one of the BUS sources put the input switch into the appropriate setting 1 or 2 position Proceed to connect the speaker cable to the amplifier as per the instructions in the Stereo Connection section of this manual General Maintenance and Service The front panel is finished with a high grade anodizing process to ensure that it maintains a flawless appearance Occasionally you should wipe off any dust build up with a damp soft cloth DO NOT use any kind of cleaning solution or cleanser on these units If for some reason the amplifier needs to be repaired please contact us immediately We will issue a Return Authorization Number RA as well as a UPS call tag for 775 Columbia St Brea CA 92821 562 697 2600 www OSDAudio com L SPEAKER L ZONE 5 R BUS BU 1_2 LINE IN 1 LINE IN O SPEAKER SPEAKER Es
5. amplifiers are stable down to 4 ohms The impedance with the connected speakers should not be lower than 4 ohms Bridged Connection The bridging mode is meant for a single speaker within a high powered application such as a home theater In the bridged mode the speakers should be 8 ohm minimum Make sure the amplifier power is OFF before making connections ISS 3 I L ZONE 1 R L ZONE 2 R BUS 1_2 LINE IN LINE IN O BUS 12 LINE IN LINE IN O BUS 1_2 LINE IN TINE IN O LO R L R SPEAKER SPEAKER O HH HH 3 a 3 AC DC_500mA MAX BRIDGE L SPEAKER SPEAKER TRIGGER Connect the right or left output from the audio source to the right or left input of the zone you are bridging Repeat this for each zone you want in bridged mode The BR ST switch should be in the bridged BR position Make sure the switch is in this mode only on the zones you want bridged Connect the speaker cables coming from one speaker to the speaker input connector on the back of the amplifier For bridging one speaker will connect to one connector Make sure to follow the labeling on the back of the amp where the speaker input connector is labeled for the bridged zone The speaker input connector is removable to make connection easier When connecting the cable to the connector check for any wire strands that might be sticking out of the connection terminal that could cause a short BUS 1 amp 2 Connection The B
6. connections are the audio inputs for each individual channel of the amplifier These inputs are to have audio sources dedicated to a single channel or zone on the amplifier We suggest using a good quality RCA patch cable for best performance The RCA inputs are labeled Left and Right Mode Switch This is used to switch each individual zone between stereo or bridged BUS LINE IN Switch This is used to indicate which input the individual channel or zone will receive audio source from Sensitivity Adjustment There is an adjustment for the different voltage inputs with each source 75mVrms 3Vrms Set the control so that the speakers are not distorting Speaker Terminals These Phoenix type terminal connectors are used to connect the speaker to each zone 3 Conductor AC Cord Receptacle A standard male receptacle that fits a 3 conductor power cord 7 5 Columbia St Brea CA 92821 562 697 2600 www OSDAudio com Speaker Phasing To obtain proper phasing and correct bass response it is necessary for all channels be in correct phase The correct phasing occurs when speakers move in and out in unison in phase on mono audio Speakers connected in phase ensure proper imaging while an out of phase connection Causes indistinct imaging Identify the positive and negative polarity on the speaker cable being used and the corresponding connections on the speakers Make sure the positive terminal of the speaker is connected to
7. indicator for the power and each of the six zones When first turning the power on the power LED will come on red and then switch to blue to indicate the amplifier is in a ready mode If there is no audio active to any of the inputs after approximately 5 minutes the power light will turn red to indicate it is in sleep mode Zone LED lights will come on blue as each zone senses an audio source to the zone input In case of a fault to a particular zone the LED changes to RED If the fault remains the corresponding LED remains red If the short circuit is momentary then the zone LED that changed to red will switch to solid blue after a few seconds Once all zones are cleared of faults the front LED indicators will turn blue as long as they are active If no audio source in present the lights will turn off to indicate the zones are in sleep mode Rear Panel BUS 1 and 2 Inputs There are right and left RCA style connections labeled as 1 amp 2 These inputs are used for sending a single audio source i e CD player tuner MP3 etc to more than one zone For using this feature correctly see Amplifier Connection later in this manual BUS 1 amp 2 Outputs There are right and left RCA style connectors labeled as 1 amp 2 These outputs are used to loop the audio source that is connected to the BUS INPUTS out to a second MX1260 Individual Zone Line Inputs These RCA style input
8. nd test for continuity 1 Hum can be caused due to a ground potential difference between connected components especially those connected to antenna or cable TV feeds 2 Check for faulty cables faulty source signals an ungrounded phono system cable feed and or a defective component 3 Reverse the AC plug of the components with non polarized plugs 4 Test the AC receptacle using a ground tester 1 Check the setting on the SEN ADJ knob You may need to turn down controls 1 Check that the bridging switch is off If two adjacent channels are connected normally but the bridging switch is set to the bridged position the two speakers will be out of phase 2 The speakers may be wired out of phase Recheck polarity and reverse the connections on the back of one speaker if necessary Ee 4 BOSD IVARI MX1260 Multi Zone Amplifier Rated Power Output 40 Watts per channel RMS at 8 onms 60 Watts per channel RMS at 4 ohms A Dimensions 16 7 W x 4 H including feet x14 25 D 30 lbs Tested to Comply A Conforms to C with FCC Standards UL Std 6500 Certified to COMPLIANT aN HOME OR OFFICE Limited Warranty cover costs of transportation to OSD Audio or damage in transmit The OSD Audio warrants its audio products against defects in material customer should return his defective product freight prepaid and insured to and workmanship for a limited period of time For a period of two years from OSD Audio o
9. nly after receiving a Return Authorization date of original purchase we will repair or replace the product at our option without charge for parts and labor Customer must pay all parts and labor changes This warranty will become void if the serial number identification has been after the limited warranty period expiries The limited warranty period wholly or partially removed altered or erased Repair or replacement under for factory refurbished products expires ninety days from date of original purchase the terms of this warranty does not extend the terms of this warranty Should a product prove to be defective in workmanship or material the consumer s This limited warranty applies only to purchases from authorized OSD Audio sole remedies will be repair or replacement as provided under the terms electronics retailers This limited warranty is extended only to the original of this warranty Under no circumstance shall OSD Audio be liable for purchaser and is valid only to consumers in the United States loss or damage direct consequential or incidental arising out of the use of or inability to use the product There are no express warranties other than Consumers are required to provide a copy of the original sales invoice from described above an authorized OSD Audio dealer when making a claim against this limited warranty this limited warranty only covers failures due to defects in materials Technical Support or workmanship that occur during normal u
10. se lt does not cover failures If any part of this product is damaged or missing please call your dealer or resulting from accident misuse abuse neglect mishandling misapplication OSD Audio directly at toll free 1 888 779 4968 or locally 562 697 2600 alteration faulty installation modification service by anyone other than OSD Audio or damage that is attributable to Acts of God It does not 775 Columbia St Brea CA 92821 562 697 2600 www OSDAudio com MX 1260 Es
11. such as radiators heat registers stoves or other apparatus Including amplifiers that Produce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two Blades with one wider than the other A grounding type plug has two blades and a third grounding Prong If the provided plugs does not fit Into your outlet consult an electrician for replacement of The obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at the plugs convenience Receptacles and at the point where they exit form the appliance 11 Only use attachments or accessories specified by the manufacturer 12 Unplug the apparatus during lightning storms or when unused for long periods of time 13 Refer all servicing to qualified personnel Servicing is required when the apparatus has been Damaged in anyway such as power supply cord or plug is damaged liquid has been spilled or Objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does Not operate normally or has been dropped oto oe MIN gt This appliance shall not be exposed to dripping or splashing water and no object filled with liquids Such as vases shall be placed on apparatus 775 Columbia St Brea CA 92821 562 697 2600 www OSDAudio com DET 2 i BOSD IFE General Information and Features Front Panel Power Switch This is used to turn the unit on or off LED Indicators There is one LED
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