McIntosh MC205 Stereo Amplifier User Manual
Contents
1. 5 o lo ol lo o d M SERIAL 4 sl O NSO Ai ei NN La IN KOV M a L O CE m Osla NA k 4 O Ta S 4 RS 3 CTR Sn To AC Outlet Right Surround Left Surround Loudspeaker Loudspeaker Back Right Back Left Surround Surround Loudspeaker Loudspeaker II Il How to Connect for a Five Channel and Zone B System SSS E O d Caution The supplied AC Power Cord should not be con Spade lug or prepared wire connection nected to the Rear Panel of the MC205 Power Am Insert the spade lug plifier until after the Loudspeaker Connections connector or prepared TR 12 7mm section of the cable end into the terminal side M access hole and tighten the terminal cap until the cable 1s firmly clamped into the terminal so the wires can not slip out Refer to figures 4 5 amp 6 have been made Failure to observe this could result in Electric Shock 1 Connect Audio Cables from the Zone A Unbalanced Outputs of a McIntosh A V Control Center to the MC205 INPUTS Channels 1 3 and 5 making sure to match up the channel identifications between both units Connect Audio Cables from the Zone B Unbal anced Outputs of a McIntosh A V Control Center to the MC205 INPUTS Channels 2 and 4 making sure to match up the channel identifications between both units Note In place of the Unbalanced Audio Cables Balanced Cables may be used2. Power Amplifier ma SEL SL 20 app E 20 20 20 A0 a a DECIDELS POWER OUTPUT POWER OUTPUT McIntosh MC205 POWER AMPLIFIER MC205 Owner s Manual McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 FAX 607 724 0549 The lightning flash with arrowhead within an eguilateral triangle is intended to alert the user to the presence of uninsulated danger ous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of A electric shock to persons NYO MN KR WN gt 10 WARNING TO REDUCE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE IMPORTANT SAFETY INSTRUCTIONS PLEASE READ THEM BEFORE OPERATING THIS EQUIPMENT Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with a dry cloth Do not block any ventilation openings Install in accordance with the manufacturer s instructions Do not install near any heat sources such as radia tors heat registers stoves or other apparatus including amplifiers that produce heat 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 ground ing type plug has two blades and a third ground ing prong The wide blade or the thir
3. d v OFF ON IR INPUTS O JO ep o OO CC EE 5 o TAS O 7 l MONB MONA REC gt TAPE VCR DVD TV SAT CD 2 PH AUX TUNER K a S uz oS e McIntosh mx120 9 e an eee eo COCO s No IN s 5 pako pon oN OG a JO lt E 3 3 3 3 3 3 3 A c O G 3 O IPS o ZONEA REC o o o S OUVRIR D D 7 6 Ol AVIS RISQUE DE CI BALANCED OUTPUTS A SUM HOM UM e000 A olol lololo 4 BACK SURR CENTER FRONT BACK SURR CENTER FRONT je B MULTI CHANNEL AMP SUB A L contro OUTPUT EXTERNAL INPUTS ZONE A OUTPUTS OUTPUTS 2 MM Left Front Loudspeaker H hoah How to Connect for a Five Channel System Center Front Loudspeaker S a N 4 OUTPUTS 4 NG RF lc de LS Right Front Loudspeaker D MZON 4 OUTPUTS 4 NG e 3 CTR ne CLASS 2 WIRING 120V Pu 50 60Hz 10A T 15AL 250V SLO BLO NO pl NN CLASS 2 WIRING POWER CONTROL O m A RISK OF ELECTRIC SHOCK DO
4. important to use cables of adequate size so there is little to no power loss in the cables The size is specified in Gauge Numbers or AWG American Wire Gauge The smaller the Gauge number the larger the wire size If your loudspeaker cables are 50 feet 38 1m or less use at least 14 Gauge If your loudspeaker cables are 100 feet 76 2m or less use at least 12 Gauge 3 Prepare the Loudspeaker Hookup Cables that attach to the MC205 Power Amplifier by choosing one of the methods below Bare wire cable ends Carefully remove sufficient insula tion from the cable ends refer to fig ures 1 2 3 If the cable 1s stranded carefully twist the strands 4 0 5 inches 12 7mm Figure 1 Figure 2 Figure 3 Spade lug or prepared wire connection Insert the spade lug connector or prepared section of the cable end into the terminal side access hole and tighten the terminal cap until the cable is firmly clamped into the terminal so the wires cannot slip out Refer to figures 4 5 amp 6 Figure 4 Figure 5 Figure 6 Banana plug connection Tighten the top portion of the terminal post and insert the banana plug into the opening at the top of the terminal Refer to figure 7 Note The use of Banana Plugs is for use 4 in the United States and Canada only Connect the Loudspeaker Hookup Cables from the MC205 OUTPUT Terminals to the Loudspeakers being careful to observe the c
5. A V Control Center Zone A Power Control Out to the MC205 POWER CONTROL ZA When connecting Loudspeakers to the MC205 it is very important to use cables of adequate size so there is little to no power loss in the cables The size is specified in Gauge Numbers or AWG American Wire Gauge The smaller the Gauge number the larger the wire size If your loudspeaker cables are 50 feet 38 1m or less use at least 14 Gauge If your loudspeaker cables are 100 feet 76 2m or less use at least 12 Gauge 3 Prepare the Loudspeaker Hookup Cables that attach to the MC205 Power Amplifier by choosing one of the methods below Bare wire cable ends Carefully remove sufficient insulation from the cable ends refer to figures 1 2 amp 3 If the cable is stranded carefully twist the strands together as tightly as possible 05 inches Note If desired the twisted ends can be Figure Figure 2 Figure 3 tinned with solder to keep the strands together or attach spade lug and or banana connector Spade lug or prepared wire connection Insert the spade lug connector or prepared section of the cable end into the terminal side access hole and tighten the terminal cap until the cable is firmly clamped into the terminal so the wires cannot slip out Refer to figures 4 5 amp 6 Figure 4 Figure 5 Banana plug connection Tighten the top portion of the terminal post and insert the banana
6. Binghamton NY 13903 The continuous improvement of its products is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without notice Printed in the U S A McIntosh Part No 04101300
7. NOT OPEN AVIS risque DE CHOC ELECTRIQUE NE PAS OUVRIR IMPEDANCE SERIAL pa NUMBER CE 4 8 V To AC Outlet Left Surround Loudspeaker McIntosh mczos POWER AMPLIFIER McINTOSH LABORATORY INC BINGHAMTON NY MADE IN USA INPUTS 5 RF 3 CTR le R Pe T LE aa KM A a KO O7 O OJI Wo Wo AN N w E Right Surround Loudspeaker Il How to Connect for a Seven Channel System Caution The supplied AC Power Cord should not be con nected to the Rear Panel of the MC205 Power Am plifier until after the Loudspeaker Connections have been made Failure to observe this could result in Electric Shock 1 Connect Audio Cables from the Zone A Unbalanced Outputs of a McIntosh A V Control Center to the MC205 INPUTS Channels 1 5 making sure to match up the channel identifications between both units Notes In place of the Unbalanced Audio Cables Balanced Cables may be used The Left and Right Front Chan nels are amplified by a McIntosh Two Channel Power Amplifier Connect a power control cable from the McIntosh A V Control Center Zone A Power Control Out to the McIntosh Two Channel Power Amplifier Power Control Input Jack Connect a second power control cable from the McIntosh two Channel Power Amplifier Power Control Output jack to the MC205 POWER CONTROL ZA Jack When connecting Loudspeakers to the MC205 it is very
8. Power the MC205 Power Output Meters Ee The 1 8 inch stereo mini phone plug Inna connects to a McIntosh A V Control Control Ground Center Power Control Output Note The Power Control Connecting Cable is available from the McIntosh Parts Department Data and Power Control Cable Part No 170 202 Six foot shielded 2 conductor with 1 8 inch stereo mini phone plugs on each end Introduction Now you can take advantage of traditional McIntosh stan dards of excellence in the MC205 Power Amplifier The five channel Power Amplifier produces a power output of 200 watts per channel and will drive quality Loudspeakers to a high level of performance The MC205 reproduction is sonically transparent and absolutely accurate The McIn tosh Sound 1s The Sound of the Music Itself Performance Features e Power Output The MC205 consists of five Power Amplifier Channels each capable of 200 watts into 4 ohm or 8 ohm Loudspeak ers with less than 0 005 distortion e Power Guard The patented McIntosh Power Guard Circuit prevents the amplifier from being over driven into clipping with its harsh distorted sound that can damage your valuable Loudspeakers e Dynamic Power Manager The MC205 s Dynamic Power Manager DPM circuitry allows for the connection of either 4 ohm or 8 ohm Loud Connector Information Introduction and Performance Features speakers while at the same time delivering identical power output A peak ou
9. can produce both audible and inaudible distortion levels exceeding 40 The audible Input Test Signal Figure 15 THERMAL NEGATIVE SENSE INPUT 9 BALANCED TO BALANCED UNBALANCED p ELECTRONIC CONV ATTENUATOR INPUT Oy UNBALANCED VOLTAGE AMP POWER DIFF GUARD AMP e DC CURRENT BIAS SOURCE RS P PG INDICATOR INDICATOR Block Diagram d of the Power Amplifier one channel shown VOLTAGE AMP PREDRIVER PREDRIVER A CURRENT LIMITER DC gt RELAY OUTPUT SENSING DRIVE o OUTPUT Naig TURN ON V DELAY OUTPUT 42 82 MODE CONTROL POSITIVE A CURRENT LIMITER NEGATIVE la FEEDBACK Figure 14 16 Technical Description distortion is unpleasant to hear but the inaudible ultrasonic distortion is also undesirable since it can damage valuable Loudspeaker System tweet ers You will never experi ence the harsh and damaging distortion due to clipping The Power Guard circuit is a waveform comparator moni toring both the input and out put waveforms Under normal operating conditions there are no differences between the shape of these waveforms If an amplifier channel is overdriven there will be a difference b
10. for the Zone A Connections 2 Connect a power control cable from the McIntosh A V Control Center Zone A Power Control Out to the McIntosh Two Channel Power Amplifier Power Control Input Jack Connect a second power control cable from the McIntosh two Channel Power Amplifier Power Control Output jack to the MC205 POWER CONTROL ZA Jack Connect power control cables from the McIn tosh A V Control Center Zone B Power Control Output Figure 1 Figure 2 Figure 3 Figure 5 Figure 6 Banana plug connection Tighten the top portion of the terminal post and insert the banana plug into the opening at the top of the terminal Refer to figure 7 Note The use of Banana Plugs is for use in the United States and Canada only 4 Connect the Loudspeaker Hookup Cables from the MC205 OUTPUT Ter minals to the Loudspeakers being careful to observe the correct polarities and channel designation Figure 7 jacks to the MC205 POWER CONTROL ZB Jack WARNING Loudspeaker terminals are hazardous live When connecting Loudspeakers to the MC205 it is very and present a risk of electric shock For ad important to use cables of adequate size so there is little to ditional instruction on making Loudspeaker no power loss in the cables The size 1s specified in Gauge Connections contact your McIntosh Dealer Numbers or AWG American Wire Gauge The smaller or McIntosh Technical Support the Gauge number the larger the wire size 5 Pla
11. selects the Indicator Meter Illumination On or Off How to Operate the MC205 Power With the POWER Switch set to the OFF REMOTE Posi tion the MC205 will turn On or Off when an A V Control Center turns On or Off For manual operation place the POWER Switch to the ON Position as desired Refer to figure 8 Note There must be a power control connec tion between the MC205 and the McIn tosh A V Control Center in order for the remote power turn on to function POWER ON OFF REMOTE Figure 8 Meter Illumination Place the METER LIGHTS Switch to the ON position for Illuminated Meters or place the switch to the Off position for no Illumination METER LIGHTS When Power Control Input ZA Zone A only of the MC205 is connected to a McIntosh A V Control Center or Pream plifier with Remote Meter Illumination Control the Meter Illumination will auto Soe matically be remotely controlled On Off with the METER LIGHTS Switch to set to the ON position Refer to figure 9 Figure 9 Impedance Switch The MC205 s Dynamic Power Manager circuitry allows for the connection of either 4 ohm or 8 ohm Loudspeakers to its output terminals while at the same time delivering the same power output Refer to figure 10 Place the IMPEDANCE bad Switch located on the rear panel to the M position 4 ohm or 8 ohm that matches the Figure 10 impedance of the connected Loudspeak ers In the event that some of the Loud speakers in th
12. with a 8 ohm Loudspeaker 1 4 Volt Unbalanced with a 8 ohm Loudspeaker Signal To Noise Ratio A Weighted 112dB below rated output Intermodulation Distortion 0 005 maximum 1f the instantaneous peak power output is rated power or less per channel with all channels op erating for any combination of freguencies from 20Hz to 20 000Hz Wide Band Damping Factor Greater than 70 at 4 ohms Greater than 140 at 8 ohms Input Impedance 20 000 ohms Balanced 10 000 ohms Unbalanced Power Guard Less than 2 THD with up to 14dB overdrive at 1 000Hz 18 Specifications Power Requirements 100 Volts 50 60Hz at 12 Amps 110 Volts 50 60Hz at 11 Amps 120 Volts 50 60Hz at 10 Amps 220 Volts 50 60Hz at 6 Amps 230 Volts 50 60Hz at 6 Amps 240 Volts 50 60Hz at 6 Amps Note Refer to the rear panel of the MC205 for the correct voltage Overall Dimensions Width is 17 1 2 inches 44 45cm Height is 9 7 16 inches 23 97cm including feet Depth is 21 inches 53 3cm including the Front Panel and Cables Weight 81 pounds 44 2 kg net 114 pounds 51 8 kg in shipping carton Shipping Carton Dimensions Width is 29 1 2 inches 74 93cm Depth is 30 1 2 inches 77 47cm Height is 17 1 2 inches 44 45cm Packing Instructions In the event it is necessary to repack the equipment for shipment the equipment must be packed exactly as shown below It is very important that the four plastic feet are attached to the bottom of the equipment F
13. your MC205 Cool operation ensures the longest pos sible operating life for any electronic instrument Do not install the MC205 directly above a heat generating compo nent such as a high powered amplifier If all the compo nents are installed in a single cabinet a quiet running ventilation fan can be a definite asset in maintaining all the system compo nents at the coolest possible operating temperature A custom cabinet installation should provide the follow ing minimum spac ing dimensions for cool operation Allow at least 6 inches 15 24cm above the top 2 inches 5 08cm below the bottom and 1 inch 2 54cm on each side of the Power Ampli MC205 Front Panel Custom Cabinet Cutout MC205 Side View in Custom Cabinet MC205 Bottom View in Custom Cabinet proceeding 17 1 16 vy gt 43 34cm POWER GUARD O O POWER GUARD POWER GUARD Installation fier so that airflow is not obstructed Allow 19 1 2 inches 49 53cm depth behind the front panel Allow 7 8 inch 2 22cm in front of the mounting panel for clearance Be sure to cut out a ventilation hole in the mounting shelf ac When the MC205 is installed together with other McIntosh Components check cle
14. 00000nnnnnnnnnnnnen 14 Operation How to Operate the Eegen 15 Additional Information Pe OS EH EEE REER EE EEES 18 Packing IMF aaa ee s 19 General Information 1 For additional connection information refer to the owner s manual s for any component s connected to the MC205 Power Amplifier 2 The Main AC Power going to the MC205 and any other McIntosh Component s should not be applied until all the system components are connected together Failure to do so could result in malfunctioning of some or all of the system s normal operations When the MC205 and other McIntosh Components are in their Standby Power Off Mode some of the circuitry inside each compo nent is active and communication is occurring between them 3 In the event the MC205 overheats due to improper ventilation and or high ambient temperature the protec tion circuits will activate The Front Panel Power Guard LEDs will continuously indicate ON and the audio will be muted When the MC205 has returned to a safe oper ating temperature normal operation will resume Connector and Cable Information XLR Connectors Below 1s the Pin configuration for the XLR Balanced Input Connectors on the MC205 Refer to the diagram for con nection PIN I Shield Ground PIN 2 Output PIN 3 Output PIN3 Power Control Connector The MC205 s Power Control Inputs receive On Off signals of 5 volts An additional connection is for controlling the illumination of
15. Design Philosophy The MC205 McIntosh Power Amplifier to uses the recently developed Dynamic Power Manager DPM Circuitry The MC205 can easily drive 4 ohm speakers with their high current demand Additionally the MC205 can be used with 8 ohm speakers and deliver equal power McIntosh s new DPM design enables it to run on higher voltage rails when connected to less current hungry 8 ohm speakers and still deliver 200 watts The power penalty usually paid with 8 ohm speakers on high current amplifiers does not exist with this new design The high efficiency circuit design of the MC205 con tributes to low operating temperatures More than 2100 square inches of heat sink area occupies almost half of the MC205 s chassis space and keeps the amplifier operating safely with convection cooling No fans are needed Protection Circuits The MC205 incorporates its version of the McIntosh Sen try Monitor output transistor protection circuit There is absolutely no compromise in sonic performance with this circuit and it ensures safe operation of the amplifier under even the most extreme operating conditions The different types of protection circuits incorporated in the MC205 in sure a long and safe operat ing life The MC205 also includes the unique patented McIntosh Power Guard circuit Power Guard eliminates the pos sibility of ever overdriving the amplifier into clipping Refer to figures 15 16 and 17 An overdriven amplifier
16. LASS 2 WIRING 4 RS Melntosh mczos POWER AMPLIFIER McINTOSH LABORATORY INC CLASS 2 WIRING BINGHAMTON NY MADE IN USA INPUTS 120V T 15AL 250V CAUTION A IN A Ca A CONTROL 4 RS S 2 LS 5 RF 3 CTR 1 LF 1 LF C7 S TIN e N IYA VER HEN MARS V N AIN P AE Vs N 1 1 AVIS risque DE CHOC ELECTRIQUE NE PAS OUVRIR v ZA VA a N DB E RAN a IN ZE RN NY IMPEDANCE Kg 7 N VE W a NN 5 RF D wa N G AS AG w O OJ aw MO O a U llo o O Ou m L m Woy PAN Wo A4 PN Word Wo tJ AN me SERIAL CE 4 al A NOI f KD M SO W CO AA K LL O GPF Ag IO VE O NAg Sa NG i 4 RS 3 CTR To AC Outlet Right Surround Left Surround Loudspeaker Loudspeaker Zone B Left Zone B Right OOOOO Loudspeaker Loudspeaker 13 li Front Panel Displays and Switches LED indicates when Am plifier Channels 1 3 or 5 POWER GUARD circuit activates Meter indicates the Power Output of the amplifier for Channels 1 3 and 5 POWER GUARD POWER GUARD POWER GUARD CJ CJ CJ 20 20 20 02 20 ED 200 POWER QUTPUT POWER QUTPUT METER LIGHTS POWER WeIntosh bad MC205 POWER AMPLIFIER OFF OFF REMOTE l LED indicates when POWER Switch Turns Amplifier Channels 2 AC Power On or Off or 4 POWER GUARD Remote On Off circuit activates METER LIGHTS Standby Power On Switch
17. OMPONENT OUTPUTS COMPONENT INPUTS GOO 31 KR KR NG M together or attach a E o O ET db o gt Dee spade lug and or e e 00 E E X banana connector mm x peo BACK SURR CENTERAFRONT BACK SURA CENTER FRONT S o oe wer a S al L l L LAE oreado Off COCO L IR INPUTS L eme iron EXTERNAL INPUTS Aa ZONE A OUTPUTS OUTPUTS How to Connect for a Seven Channel System McIntosh Two Channel Power Amplifier MeIntosh mc4o2 o IER Right Front o Left Front Loudspeaker 6000 Loudspeaker 0000 E Center Front Loudspeaker 4 OUTPUTS 4 4 OUTPUTS 4 5 RF 1 LF 2 LS 3 CTR 7 N B CLASS 2 WIRING 4 RS Ielntosh mczos POWER AMPLIFIER McINTOSH LABORATORY INC CLASS 2 WIRING BINGHAMTON NY MADE IN USA INPUTS 120V Ty T 15AL 250V CAUTION TUT Z SBO A epee A CONTROL 4 RS ESCH 2 LS 5 RF 3 CTR 1 LF 1 LF C gt gz k G pata ff S Ga EAR poo Z R S M EN Orm PN Ges Ge AO AN Pers d AVIS risque DE CHOC ELECTRIQUE NE PAS OUVRIR ZA TEN CON NY NN NG N YE AN X A SC M NY X Z G NY VA d EN X A Ca NS IMPEDANCE lo oi A Se KO
18. arances on all components before 8 5 16 POWER GUARD 21 11cm m Melntosh E TL MC205 POWER AMPLIFIER a 6 X 15 24cm Cabinet ja o P om si Custom Mounting Panel Opening FF for Ventilation KE Support pi SH Opening for Ventilation Chassis Shelf 3 4 Spacers 8 57cm 12 114 31 12cm Cutout 8 32 Opening 12 38 Center the for 45374 31 43cm opening horizontally Ventilation 0 50cm with the MC205 Chassis o 9 7 8 KS 25 08cm 11 112 29 21cm Rear Panel Connections DD yy gq jcr A bybgbJAG cC QZ E H ee ee Connect the MC205 OUTPUT Connections Selects the impedance OUTPUT Connections Balanced INPUT power cord to alive AC fora4ohm or 8 ohm 4 or 8 ohms of the for a 4 ohm or 8 ohm Channel 1 Left outlet Refer to the rear Loudspeaker for Chan Loudspeakers connect Loudspeaker for Chan Front panel to determine the nel 5 Right Front ed to the MC205 nel 1 Left Front correct voltage OUTPUT Connections OUTPUT Connec POWER CONTROL ZA receives OUTPUT Connections for a 4 ohm or 8 ohm tions for a 4 ohm or turn On Off signals from a McIn for a 4 ohm or 8 ohm Loudspeaker for Chan 8 ohm Loudspeaker tosh component for Zone A Chan Loudspeaker for Chan nel 4 Right Surround for Channel 2 Left nels 1 5 ZB receives turn On Off nel 3 Center Front or ZONE B Right Surround or ZONE signals from a McIntosh component Channel B Left Channel for Zone B Chann
19. ce the IMPEDANCE Switch to the position 4 ohm If your loudspeaker cables are 50 feet 38 1m or less or 8 ohm that matches the impedance of the connected use at least 14 Gauge Loudspeakers In the event that some of the Loud If your loudspeaker cables are 100 feet 76 2m or less speakers in the system are of different impedance use o anac the impedance of the Left and Right Front Loudspeak 3 Prepare the Loudspeaker Hookup Cables that attach ers to set the IMPEDANCE Switch position to the MC205 Power Amplifier by choosing one of the 6 Connect the MC205 Power Cord to an active AC outlet methods below Bare wire cable ends Carefully remove suffi McIntosh A V Control Center cient insulation from the paps J cable ends refer to figures KA ee O d Di oo H 1 2 amp 3 If the cable is s Ol 4 IL 3 MONB MONA REC S 5 TAPE VCR DVD TV SAT CD 2 PH AUX TUNER f Ke stranded carefully twist Z ele toi Melnfosh vz 9 Gul Bo the ands GE as et Sa rees 4 E G Oe B Lao T L a oe O YO CAUTION S as as NG v o tightly as possible Ks DIGITAL INPUTS rae aN o ON Note If desired the twisted JE HA RL Dali see R E maes S o B O AX 6lolololo
20. d prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet Protect the power cord from being walked on or pinched particularly at plugs convenience re ceptacles and the point where they exit from the apparatus CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN The exclamation point within an equilateral triangle is intended to alert the user to the presence of im portant operating and maintenance servicing instructions in the litera ture accompanying the appliance A AVI S RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL To prevent the risk of electric shock do not remove cover or INS 12 13 14 pa 16 17 18 back No user serviceable parts inside Only use attachments accessories specified by the manufacturer Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when mov ing the cart apparatus combination to avoid injury from tip over Unplug this apparatus during lightning storms or when unused for long periods of time Refer all servicing to qualified service person nel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have falle
21. determining the best location for your MC205 There is additional informa tion on the next page pertaining to installing the MC205 into cabinets 17 1 2 44 45cm Front View of the MC205 asies settee settee ee BIB 9 716 l 23 97cm P McIntosh bed einen 16 13 16 42 70cm Rear View of the MC205 Powe sale 11 3 4 29 85cm 18 3 4 47 63cm 16 7 16 l 41 75cm Side View of the MC205 _ 8 114 3 16 20 96cm 0 48cm 7 8 W 30 48cm 5 08cm Il Installation The MC205 can be placed upright on a table or shelf standing on its four feet It also can be custom installed in a piece of furniture or cabinet of your choice The four feet may be removed from the bottom of the MC205 when tt is custom installed as outlined below The four feet together cording to the dimensions in the drawing with the mounting screws should be retained for pos sible future use 1f the MC205 is removed from the custom installation and used free standing The required panel cutout ventilation cutout and unit dimensions are shown Always provide ade quate ventilation for
22. dio demands Refer to figure 23 The power amplifier draws high current from the AC power line Therefore it 1s important that they plug directly into the wall outlet Also most owners desire one power switch for the whole audio system The MC205 is equipped with a circuit that provides remote Power Control from a McIntosh A V Con trol Center When the A V Control Center is switched On a 5V signal operates the power relay in the MC205 The MC205 also has a remote Power Control input for Zone B operation two of the five channels IN N NAH PAN G K Le gt 2 a Figure 19 LOW VOLTAGE SUPPLY Block Diagram of the Power Supply TOROID AO 8Q MODE 8Q MAIN POWER CONTROL id SUPPLY TRANSFORMER 4Q MAIN SUPPLY THERMAL SENSE Figure 18 Specifications Power Output Minimum sine wave continuous average power output per channel all channels operating is 200 watts into a 4 ohm or 8 ohm load Output Load Impedance 8 and 4 ohms Rated Power Band 20Hz to 20 000Hz Total Harmonic Distortion 0 005 maximum harmonic distortion at any power level from 250 milliwatts to rated power 20Hz to 20 000Hz Dynamic Headroom 1 7dB Freguency Response 0 0 25dB from 20Hz to 20 000Hz 0 3dB from 10Hz to 100 000Hz Input Sensitivity for rated output 2 0 Volt Balanced with a 4 ohm Loudspeaker 1 0 Volt Unbalanced with a 4 ohm Loudspeaker 2 8 Volt Balanced
23. e system are of different IMPEDANCE impedance use the impedance of the Left 4 J s and Right Front Loudspeakers to set the Figure 11 IMPEDANCE Switch position Refer to figure 11 How to Operate the MC205 Power Output Meters The MC205 Power Output Meters are calibrated to allow for the direct reading of either the Power Output in Watts or Decibels for Loudspeakers connected to Channels 1 3 and 5 The meters respond to all the musical information being produced by the amplifier They indicate to an accu racy of at least 95 of the power output with only a single cycle of a 2000Hz tone burst Refer to figure 12 WATTS 20 2 0 2 20 2 em 20 ele s POWER QUTPUT Figure 12 15 Technical Description A continuous average power output rating of 200 watts and an output current of greater than 25 amperes per channel makes this one of the most advanced and powerful ampli fiers MeIntosh has ever manufactured Refer to figures 13 and 14 The distortion limits for the MC205 are no more than 0 005 at rated power output for all frequencies from 20H7 to 20 000Hz Typical performance at mid freguen cies 1s less than 0 002 The true distortion readings on the MC205 ag are so low it takes special measuring techniques to make accurate readings The MC205 can deliver the best possible perfor mance from any type of high qual ity Loud speaker System PES 0 H LANG Figure 13
24. els 2 and 4 UTPUTS 4 4 OUTPUTS 4 MO Efe 16 lz KO 16 3 CTR D MZON CLASS 2 WIRING McIntosh mc2o5 POWER AMPLIFIER McINTOSH LABORATORY INC CLASS 2 WIRING BINGHAMTON NY MADE IN USA T INPUTS 20V Ty 50 60Hz 10A 5 RF 3 CTR 4 RS S De B CE E Ono NA P4 Balanced INPUT Channel 4 Balanced INPUT Channel2 Balanced INPUTS Channel Right Surround or ZONE Left Surround or ZONE B 5 Right Front and Channel B Right Channel Left Channel 3 Center Front Main Fuse refer Unbalanced INPUTs Channel Unbalanced INPUT Channel 5 Unbalanced INPUTs Channel to the rear panel 2 Left Surround and Channel Right Front 1 Left Front and Channel 3 for the correct fuse 4 Right Surround or ZONE B Center Front size and rating Left and Right Channels Il How to Connect for a Five Channel System Caution The supplied AC Power Cord should not be con nected to the Rear Panel of the MC205 Power Am plifier until after the Loudspeaker Connections have been made Failure to observe this could result in Electric Shock 1 Connect Audio Cables from the Zone A Unbalanced Outputs of a McIntosh A V Control Center to the MC205 INPUTS Channels 1 5 making sure to match up the channel identifications between both units Note In place of the Unbalanced Audio Cables Balanced Cables may be used 2 Connect a power control cable from the McIntosh
25. etween the two signal waveforms When the difference exceeds 0 3 equivalent to 0 3 harmonic dis tortion the Power Guard activates the PG light and a dy namic electronic attenuator at the amplifier input reduces the input volume just enough to prevent any further increase in distortion The Power Guard circuit acts so fast that there are absolutely no audible side effects and the sonic purity of the music reproduction is perfectly pre served The MC205 Power Amplifier with Power Guard is not limited to Just the rated power output but will actually produce distortion free output well above its rated power due to the McIntosh philosophy of conservative design POWER SWITCH FUSE i Without Power Guard Figure 16 With Power Guard Figure 17 INRUSH CURRENT LIMITER 120VAC 50 60Hz Power Supply Circuits To compliment the design of the MC205 there is a high current power supply for the five power amplifier channels Refer to figure 18 The very large Power Transfomer has toroidal windings on a toroidal core and can supply over 35 amps of continuous current Refer to figure 19 golf ball is for size comparsion It is enclosed in the legendary McIn tosh Potted Enclosures WE and weighs i Q E over ag 4 12 06kg The super size main filter capacitors can store over 310 Joules of energy for the five amplifier channels necessary for the wide dynamic range that Digital Au
26. lololoe TAPE DVD TV SAT CD 2 AUX ends can be tinned ith ld t k th 120V 4 50 60Hz 65 WATTS KEYPADS ACC BACK SURR CENTERAFRONT GACK SURA CENTER FRONT WIN Sotaer 10 Kee e ONEA ZONE B strands together or Ga m m power O d i i CO Of o IT O PEO Oe SOOO attach spade lug and MPR ee hie m MULT CHANNEL AMP ube le or banana connector How to Connect for a Five Channel and Zone B System McIntosh Two Channel Power Amplifier McIntosh mcso2 IER 71 OUT POWER CONTROL POWER AMPLIF McINTOSH LABORATORY INC BINGHAMTON NY 13203 Left Front Loudspeaker Right Front Loudspeaker BALANCED 120VV 50 60Hz 10A s n OUTPUT MODE M 1 80 EI 4a L o 20 o o 20 o o 42 o 80 1 000006 0060004 o o o o o o o o O II SI N ONG RIGHT OUTPUTS mn CLASS 2 WIRING mm LEET OUTPUTS 00000 Center Front Loudspeaker 4 OUTPUTS 4 4 OUTPUTS 4 5 RF 1 LF 2 LS 3 CTR S o N g C
27. n into the apparatus the appara tus has been exposed to rain or moisture does not operate normally or has been dropped Do not expose this equipment to dripping or splashing and ensure that no objects filled with liq uids such as vases are placed on the equipment To completely disconnect this equipment from the a c mains disconnect the power supply cord plug from the a c receptacle The mains plug of the power supply cord shall remain readily operable Do not expose batteries to excessive heat such as sunshine fire or the like Thank You PAA TE aaa NS HQ Your decision to own this McIntosh MC205 Power Ampli fier ranks you at the very top among discriminating music listeners You now have The Best The McIntosh dedica tion to Quality 19 assurance that you will receive many years of musical enjoyment from this unit Please take a short time to read the information in this manual We want you to be as familiar as possible with all the features and functions of your new McIntosh Please Take A Moment The serial number purchase date and McIntosh Dealer name are important to you for possible insurance claim or future service The spaces below have been provided for you to record that information Serial Number Purchase Date Dealer Name Technical Assistance If at any time you have questions about your McIntosh product contact your McIntosh Dealer who is familiar with your McIntosh e
28. orrect polari ties and channel designation WARNING Loudspeaker terminals are hazardous live and present a risk of electric shock For ad ditional instruction on making Loudspeaker Connections contact your McIntosh Dealer or McIntosh Technical Support Figure 7 5 Place the IMPEDANCE Switch to the position 4 ohm or 8 ohm that matches the impedance of the connected Loudspeakers In the event that some of the Loud speakers in the system are of different impedance use the impedance of the Left and Right Front Loudspeak ers to set the IMPEDANCE Switch position Connect the MC205 Power Cord to an active AC outlet McIntosh A V Control Center together as tightly as pos ZONEA REC sible o ba Je ODO Gai Note If desired the O DEO of ol CH S 4 S MONB MONA RE y TAPE VCR DVD TV SAT CD 2 PH AUX TUNER twisted ends can be Ok A Wach veer ata SKS 8 tinned with solder alo O O JOGOS OO OP OO lt EE to keep the strands L C
29. our 1 4 20 x 2 1 2 inch screws and washers must be used to fasten the unit securely to the bottom pad and shipping skid This will ensure the proper equipment location on the bottom pad Failure to do this will result in shipping damage Use the original shipping carton and interior parts only if they are all in good serviceable condition If a shipping carton or any of the interior part s are needed please call or write Customer Service Department of McIntosh Labo ratory Please see the Part List for the correct part numbers INNER CARTON TOP FOAM PAD F INNER CARTON SHIPPING SKID INNER CARTON BOTTOM biga Flat WASHER 4x 1 4 20 X 2 1 4 CAP SCREW 4x FOAM PAD SIDE 2X SHIPPING CARTON p Packing Instructions Ca 9YQUJ QC O EEE CN Y dY98Q QGZ Z6ce6e w w rnr e Vq micc vee Quantity Part Number Description 1 034052 Shipping carton top l 034051 Shipping carton bottom 2 034054 Foam Pad top and bottom 2 034186 Foam Pad front and rear 2 034187 Foam Pad sides 1 034136 Inner carton top l 034137 Inner carton bottom l 034188 Foam Pad inner carton 034264 Shipping skid 4 101212 1 4 20x2 1 4 cap screw 4 104058 Flat washer SHIPPING CARTON TOP FOAM PAD TOP AND BOTTOM 2X KO INSIDE BOX d G FOAM PAD FRONT AND REAR 2X 7 lt gt BOTTOM 19 McIntosh Laboratory Inc 2 Chambers Street
30. plug into the opening at the top of the terminal Refer to figure 7 Note The use of Banana Plugs is for use in the United States and Canada only 4 Connect the Loudspeaker Hookup Cables from the MC205 OUTPUT Terminals to the Loudspeakers being careful to observe the correct polarities and channel designation WARNING Loudspeaker terminals are hazardous live and present a risk of electric shock For ad ditional instruction on making Loudspeaker Connections contact your McIntosh Dealer or McIntosh Technical Support 5 Place the IMPEDANCE Switch to the position 4 ohm or 8 ohm that matches the impedance of the connected Loudspeakers In the event that some of the Loud speakers in the system are of different impedance use the impedance of the Left and Right Front Loudspeak ers to set the IMPEDANCE Switch position 6 Connect the MC205 Power Cord to an active AC outlet Figure 7 McIntosh A V Control Center MON A OUT 4 HDMI VIDEO 560686 000009 MON COMPONENT OUTPUTS COMPONENT INPUTS DIGITAL OUTPUTS DIGITAL INPUTS EG O o DO O OI TAPE DVD TV SAT CD 2 AUX 120V uv 50 60Hz 65 WATTS TUB A KEYPADS ZONEA ZONEB 1 8 t WO
31. quipment and any other brands that may be part of your system If you or your Dealer wish additional help concerning a suspected problem you can receive technical assistance for all McIntosh products at McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 Phone 607 723 1545 Fax 607 724 0549 Customer Service Can SESS eel If it is determined that your McIntosh product is in need of repair you can return it to your Dealer You can also return it to the McIntosh Laboratory Service Department For assistance on factory repair return procedure contact the McIntosh Service Department at McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 Phone 607 723 3515 Fax 607 723 1917 Copyright 2006 by McIntosh Laboratory Inc Table of Contents salety LISP CUMS sabat cda ANAN 2 Thank You and Please Take a Moment 3 Technical Assistance and Customer Service 3 Table of Contents 0saneeenneeeessensssenssenessersssereserssssrsssere 3 General Inlormation eebe 3 Connector and Cable Information eee 4 ai E 4 Per or mane Features aaa Tag 4 IRV 5 ai 6 Connections Rear Panel Connectons eee 7 How to Connect for a Five Channel System 8 How to Connect for a Seven Channel System 10 How to Connect for a Five Channel and Lone EE 12 Front Panel Features Front Panel Displaysand Switches 00000
32. tput current of 25 amperes per channel ensures that it will successfully drive high quality Loud speakers such as McIntosh for a truly exciting sound experience e Balanced and Unbalanced Inputs Balanced connections guard against induced noise and al low long cable runs without compromising sound quality e Sentry Monitor and Thermal Protection McIntosh Sentry Monitor power output stage protection circuits ensure the MC205 will have a long and trouble free operating life Built in thermal protection circuits guard against overheating e Illuminated Power Meters The Illuminated Power Output Watt Meters on the MC205 are peak responding and indicate the power output of the amplifier e Power Control The McIntosh Power Control Circuit allows for remote turn on of the MC205 Power Amplifier from a McIntosh A V Control Center or Preamplifier for a single or dual Zone System e Special Power Supply A regulated Power Supply and a very large Toroidal Wound Power Transformer ensures stable noise free op eration even though the power line varies e Fiber Optic Solid State Front Panel Illumination The even Illumination of the Front Panel 1s accomplished by the combination of custom designed Fiber Optic Light Diffusers and extra long life Light Emitting Diodes LEDs The glass Front Panel ensures the pristine beauty of the MC205 will be retained for many years Dimensions Dimensions E The following dimensions can assist in
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