McIntosh MCC301M User's Manual
Contents
1. recommended that a professional who is skilled in all aspects of Vehicle Audio Systems assist you in the selec tion and installation The illustration below is just one of the many possible combinations 1 Connect a wire from the Control Center Amp On to the MCC301M ON Connector on the right side of the am plifier Note All cables should be connected to the amplifier before connecting the DC power cables to the battery 2 Connect cables up to 12AWG from two loudspeakers connected to the Amplifier s A and BOUTPUT Termi nals being careful to observe the correct polarities Note The A and B OUTPUT Terminals are in parallel either A B or both Terminals may be connected McIntosh Control Center TIT ia si Left Front Right Front McIntosh External Subwoofer Rotary Control How to Connect for Subwoofer 3 Connect audio cables from the Control Center Outputs to the McIntosh Power Amplifier Upper Range Inputs 1 and 2 4 Connect audio cables from the McIntosh Power Ampli fier Upper Range Outputs 1 and 2 to the MCC301M Inputs and 2 Note The Subwoofer Output is summed from both of the Inputs Jacks and can be remotely controlled by connecting a cable from the SUB REMOTE CONTROL jack to the Optional External Rotary Control 5 Connect the MCC301M to the vehicle battery termi nals using size 4AWG maximum cables Note It is advisable to place an inline fuse of a suitable2. than boosting Refer to figure 6 Input Sensitivity Control and Source Switch The SENSITIVITY Control allows the setting of the input sensitivity to provide an ideal match for the signal source being used The most desirable allows the control center to have a useful volume TIS range as wide as possible from loud to soft A good place to start is to set the amplifier s SENSITIV ITY Control to the output voltage called out in your control center owner s manual The Level con trols can be set for any sensitivity from 5 volts to 8 volts The SOURCE Switch allows selection of the Input Sig nal from either the INPUT Jack or both INPUT and 2 Jacks In the 1 2 SUB position the optional Subwoofer Re mote Control can be used to control the volume Refer to figure 7 Figure 7 11 Melntosh How to Replace the Fuses If the MCC301M produces no sound there is no Illumination of the Meter on the Top Glass Panel and the power connections seem secure one or more of the Amplifier s Fuse s may have failed Under normal operating conditions your amplifier s fuses should not fail Failure of a fuse is usually an indication of a problem Replacing the fuse if there is problem in the amplifier may incur a risk of further damage Refer to figures 8 9 and 10 Figure 8 Caution Disconnect the Amplifier from the Vehicle Battery or DC Power Supply as Potentially Dangerous Currents exist inside the ampl
3. Guard Amp ON a Left Front Crossover Network Woofer Midrange Tweeter Input Melntosh Top Panel Controls Display and Switches LOW PASS FILTER FREQUENCY POWER GUARD SENSITIVITY Control selects the Low Frequency LED lights when the Roll Off Power Guard Circuit activates Input Sensitivity Control LOW PASS FILTER SUBSONIC FILTER EQUALIZER Controls SOURCE Switch selects Switch activates the Switch selects the low select the FREQUENCY either Input 1 or 1 2 filter frequency roll off be and the LEVEL of Boost SUBwoofer Sum of low 20Hz or 28Hz or or Cut at the Center Fre Inputs land 2 flat frequency re quencies METER indicates the actual Power Output 10 Introduction The McIntosh MCC301M is a highly versatile amplifier that can be configured in many ways This manual gives examples of some of the most common configuration The best way to set equalization and filter controls is through the use of a real time spectrum analyzer and the expertise of a professional installer This manual will guide you through the basic operation however we suggest you refer to your dealer for further information on the use of this unit To access the Amplifier Controls and Switches refer to Removing the Glass Panel located on page 6 of this Owner s Manual Power The MCC301M will turn On or Off when the Control Cen ter turns On or Off Note There must be an Amp ON connection between the MCC301M an
4. Melntosh aa MCC301M Power Amplifier MCC301M McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 FAX 607 724 0549 Melntosh WARNING TO REDUCE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL To prevent the risk of electric shock do not remove bottom cover No user serviceable parts inside IMPORTANT SAFETY INSTRUCTIONS PLEASE READ THEM BEFORE OPERATING THIS EQUIPMENT General 1 Read these instructions Keep these instructions Heed all warnings Follow all instructions Warning To reduce risk of fire or electrical shock do not expose this equipment to rain or moisture This unit is capable of producing high sound pres sure levels Continued exposure to high sound pres sure levels can cause permanent hearing impair ment or loss User caution is advised and ear protec tion is recommended when playing at high volumes 6 Disconnect this equipment when unused for long peri ods of time 7 Only use attachments accessories specified by the manufacturer gt gt Installation 8 Do not block any ventilation openings Install in accor dance with the manufacturer s instructions 9 Do not install near any heat sources such as radiators heat ducts or other equipment that prod
5. REGULATOR x 56V e FAN TEMPERATURE SOFT SPEAKER FANS i CONTROLLER SENSOR START PROTECTION weibeig yoolg Melntosh Specifications Power Output 300 watts into 4 ohm loads and 600 watts into 2 ohm loads is the minimum sine wave continuous average power out put Rated Power Band 20Hz to 20 000Hz Total Harmonic Distortion Maximum Total Harmonic Distortion at any power level from 250 milliwatts to rated power output is 0 005 for a 2 or 4 ohm load Dynamic Headroom 1dB Frequency Response 0 0 25dB from 20Hz to 20 000Hz 0 3dB from 10Hz to 100 000Hz Sensitivity 0 5 Volts A Weighted Signal To Noise Ratio 105dB 1 5V One Band Equalizer Center Frequency is variable from 40Hz to 2 000Hz level variable 12db Q fixed at 2 Subsonic Filter Selectable 20Hz or 28Hz the slope is 18dB per octave Low Pass Filter Adjustable from 40Hz to 120Hz with a slope of 24dB per octave Subwoofer Output Low Pass filtered at 200Hz with a 6dB per octave slope level variable 12dB when using optional McIntosh Ex ternal Subwoofer Rotary Control Intermodulation Distortion Maximum Intermodulation Distortion if instanta neous peak output per channel does not exceed twice the rated output for any combination of fre quencies from 20Hz to 20 000Hz with all channels operating is 0 005 for a 2 or 4 ohm load 14 Specifications Input Impedance 12 000 ohms Power Re
6. and carefully raise it high enough to put your hand under Temporarily place the removed glass panel in a safe place remove the suction cup and save it for future use Removing the End Caps To access the MCC301M Connecting Terminal Block re move the Glass Panel first the above step and then re move the Phillips Screws holding the End Caps on both sides of the amplifier and lift the end caps off See figure 3 Cool Air Figure 2 Figure 3 Installation Warm Air Warm Air Remove Top Cover Screws Remove Top Cover Screws Remove End Cap Screws Remove End Cap Screws Connect to the Negative vehicle battery terminal Cooling Fan Air Intake Side Panel Cooling and Connections Connect to the positve vehicle battery terminal with an inline fuse Cooling Fan Air Intake SUBWOOFER OUTPUTS OUTPUTS from the Receives the Amplifier supply a summed output INPUT Signal Source Turn ON signal from a for connection to an McIntosh Control Center other Power Amplifier INPUTS for audio cables from a signal source Connector for optional SUBwoofer REMOTE Volume CONTROL OUTPUT Connections for loudspeakers Controls the Power Guard Circuit when connected to certain McIntosh Control Centers Melntosh How to Connect for Subwoofer There are many different possible Vehicle Audio System combinations utilizing the MCC301M Power Amplifier It is
7. d the signal source unit in order for the amplifier power turn On and Off to function Low Pass Filter The LOW PASS FILTER Switch OUT Position selects a Flat Frequency Response When the LOW PASS FIL TER Switch is in the IN low frequency pass Posi tion the Amplifier will pass all frequencies below the setting of the LOW PASS FILTER FREQUENCY Control Refer to figure 4 Figure 4 Subsonic Filter The SUBSONIC FILTER Switch OUT Position selects a Flat Frequency Response When the SUBSONIC FILTER Switch is in the 20Hz Position the Amplifier will pass all frequencies above 20Hz In a similar fashion selecting the 28Hz position the Amplifier will pass all frequencies above 28Hz Refer to figure 5 Figure 5 Equalizer The MCC301M Power Amplifier is equipped with an equalizer The equalizer is not intended to act as a tone control The one band equalizer is best utilized as a notch filter to reduce a peak as located by real time analysis with an RTA in your system s frequency response If you are attempting to equalize a system without RTA data play How to Operate music you are familiar with set the equalizer LEVEL Con trol to 12 and slowly turn the FRE QUENCY Control to get an idea where in the musical spectrum the frequency numbers are located Then set the LEVEL Control back to 0 and listen to the system to determine its equalization needs Subtle adjust ments are best and cutting usually sounds better
8. e measured Remote Subwoofer Control and Line Output The subwoofer level can be controlled via an optional ex ternal rotary control which can be remotely mounted in the vehicle A line level output is provided to drive an external subwoofer power amplifier Gold Plated Terminals McIntosh provides gold plated input and output terminals on the amplifiers for superior corrosion resistance It is a very important feature in the automotive environment Speaker wires to 10 AWG and DC input wires to 4 AWG can be accommodated Dimensions Dimensions The following dimensions can assist in determining the best location for your MCC301M There is additional in formation on the next page pertaining to installing the MCC301M into your vehicle Top View of the MCC301M 13 21 32 5 34 69cm 11 00 27 94cm 2 11 16 6 82cm 12 1 2 31 75cm 11 7 8 30 16cm Side View of the MCC301M p 11 27 93cm 11 32 10 93cm 2 15 16 7 49cm Melntosh Installation It is recommended that a professional who is skilled in all aspects of installation and operation install the MCC301M and any associated mobile audio equipment Amplifier Ventilation Always provide adequate ventilation for the MCC301M The amplifier requires an adequate airflow into the cooling fans which are located on the left side of the amplifier The warm air exits the amplifier through v
9. ents on the heatsinks See figure 1 Be sure to provide at least 1 1 2 inches clear ance in front of the cooling fans and 1 inch clearance at the sides of the heatsinks The cooling fans are controlled by temperature sensors attached to the interior of the tunnel The fans are normally off If the program material contains sustained loud pas sages demanding high power the fans will turn on to in crease cooling If cooling is still not sufficient additional heating will shut down the amplifier s internal power sup ply completely and the Power Guard LED will light The fans will continue to run and once normal temperatures are restored operation will resume The amplifier can be mounted vertically or horizontally and may be located under a seat if adequate clearance is available The preferred installation method is to mount the amplifier directly to the vehicle frame using the hardware supplied with the amplifier It is not recommended that the amplifier be mounted under the hood or in a location where it will be directly ex posed to the elements The openings in the fan housings and heat tunnel vents can allow internal components to be damaged by exposure to water chemicals or any form of road dust or debris Removing the Glass Panel To access the MCC301M Controls remove the glass panel by removing the four hex bolts with the supplied 3 32 hex key See figure 2 Attach the supplied suction cup to the top center of the glass panel
10. ifier Before accessing fuses disconnect both the positive and negative power cables from the DC input terminals on the left side of the amplifier using a 5 32 hex key 2 Remove the Top Glass Panel by first removing the four hex bolts with the supplied 3 32 hex key 3 To remove the Top Glass Panel attach the supplied suction cup to the top center of the glass panel and carefully raise it high enough to put your hand under Temporarily place the removed glass panel in a safe place remove the suction cup and save it for future use 4 Remove the Phillips Screws holding the End Caps on both sides of the amplifier and lift the end caps off 5 Remove the two Phillips Screws one is located above the row of Controls Switches and the other near the Bottom Edge of the Gold Faceplate Control Panel 6 Remove all 5 crossover equalizer and sensitivity knobs 7 Remove the Gold Faceplate Control Panel 8 Remove the fuses with needle nose pliers taking care to avoid hitting parts on the circuit board Note To determine if the fuse has failed examine the link between the two fuse legs to see if it has a break in it 9 Replace the fuse with one of the same type and rating as unauthorized substitutions may prove hazardous to you and the amplifier 10 When reinserting the fuse set it in place with the pliers then push it the rest of the way in with your finger to avoid having the pliers slip and hit the circuit board 11 Re ins
11. in fire electric shock or other hazards Upon completion of any service or repairs to this prod uct ask the service technician to perform safety checks to determine that the product is in proper operating condition Thank You Your decision to own this McIntosh MCC301M Power Amplifier ranks you at the very top among discriminating music listeners You now have The Best The McIntosh dedication to Quality is 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 equipment and any other brands that may be part of your system If you or your dealer wish addi tional help concerning a suspected problem you can re ceive technical assistance for all McIntosh products at McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 Phone 607 723 1545 Fax 607 723 3636 Customer Service If it is dete
12. osh stan dards of excellence in the MCC301M Power Amplifier A 300 watt high current output will drive any high quality loudspeaker to its ultimate performance The MCC301M reproduction is sonically transparent and absolutely accu rate The McIntosh Sound is The Sound of the Music It self Performance Features Power Output The MCC301M consists of a power amplifier capable of 300 watts into 4 ohm speakers with less than 0 005 dis tortion High Current Output A peak output current of 50 amperes ensures that the MCC301M will successfully drive high quality loudspeak ers such as McIntosh for a truly exciting sound experi ence Equalizer and Variable Crossover Filters The one band equalizer has a center frequency that is vari able from 40 Hz to 2 000 Hz which can be either cut or boosted 12db 24dB per octave low pass filter with vari able corner frequencies from 40Hz to 120Hz Subsonic Filter The selectable frequency Subsonic Filter prevents the am plifier circuitry from amplifying non audible signals and thus wasting amplifier power Power Guard and Sentry Monitor The Patented McIntosh Power Guard Circuit prevents the amplifier from being overdriven into clipping with its harsh distorted sound that can also damage your valuable loud speakers McIntosh Sentry Monitor power output stage protection circuit is present to ensure the MCC301M will have a long and trouble free operating life S
13. peaker Protection If for any reason a DC Direct Current voltage appears at the speaker output terminals a built in circuit turns off the amplifier power supplies to prevent damage to your valu able loudspeakers Thermal Protection with Multi Speed Cooling Fans Built in thermal protection circuits guard against overheat ing which could shorten the normal long life expectancy of your McIntosh Power Amplifier Cooling fan speed is con trolled by temperature sensors attached to the interior of the extruded aluminum cooling tunnel The fans are nor mally off When needed the fans will automatically switch on and speed is increased as needed for additional cooling Fully Discrete Design The MCC301M has a fully complimentary double bal anced amplifier design and is identical to that found in McIntosh s leading home amplifiers Balanced Inputs with Pass Through The Balanced Inputs cancel out interference noise that is produced by other sources in the vehicle and can be di rectly connected to the bridged speaker output of any head unit The MCC301M provides two line level outputs for the convenience of connecting multi amplifier systems Illuminated Power Meter The Illuminated Power Output Watt Meter on the MCC301M is peak responding and almost ten times faster than a professional VU meter It also indicates the true power output of the amplifier regardless of the loudspeaker impedance as both the voltage and current ar
14. quirements 12 Volts DC 2 5 amps idle 50 amps 300 watts Dimensions 12 5 inches 31 8cm wide 3 0 inches 7 6cm high 13 7 inches 34 8cm depth Weight 14 7 pounds 6 7Kg net 17 5 pounds 7 9Kg in shipping carton Packing Instructions Packing Instructions In the event it is necessary to repack the equipment for Quantity Part Number Description shipment the equipment must be packed exactly as shown 1 034162 Shipping carton only below failure to do so will result in shipping damage 2 034132 End Foam pad Make sure that the Top Glass Panel is firmly secured to the chassis using the supplied hex head screws 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 Ng 15 t nfos McIntosh Laboratory Inc 2 Chambers Street Binghamton NY 13903 McIntosh Part No 040764
15. rmined 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 Repair department For assistance on factory repair return procedure contact the McIntosh Repair Department at McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 Phone 607 723 3515 Fax 607 723 1917 Copyright 2001 by McIntosh Laboratory Inc Table of Contents Safety Instructions u s 2 Thank YO NG LABAG BALAKANG 3 Please Take a 3 Customer Service iuis aan GARA 3 Table of Contents 2 2 0040000 42 000000016000000000000004 3 Introduction u s 4 Performance Features 4 DIMENSIONS NAT tr eee ris 5 Installatiori 6 Side Panel Cooling and Connections 7 How to Connect for Subwoofer 8 How to Connect for Full 9 Top Panel Controls Displays and Switches 10 How to Operate 2 11 How to Replace the Fuses seen 12 Block Diagram 13 Specifications i e ertet ee e bre deber deus 14 Packing Instruction 9 15 General Notes 1 An optional McInto
16. sh External Subwoofer Rotary Control Model Number R1163 is available from your McIntosh Dealer 2 Do not connect the Amplifier s Speaker Negative Terminal Connection directly to the Vehicle Chassis Failure to observe this could result in damage to your Amplifier 3 It is advisable to place an inline fuse as close as possible to the battery 4 For additional connection information refer to the owner 5 manual s for any component s connected to the MCC301M Amplifier 5 There is a built in turn on delay which will mute the speaker output for approximately two seconds when the amplifier is turned on 6 It is very important that loudspeaker cables of adequate size be used in your music system to ensure that there will be no power loss or heating If your loudspeaker cables are 25 feet 7 62m or less use at least 16 Gauge wire size or larger 7 The MCC301M Line Level OUTPUT is wired as a Y connection with the INPUT to pass the input signals on to additional amplifiers keep cable lengths as short as possible The McIntosh MX406 Control Center is capable of driving several additional power amplifiers with no degradation of the signal 8 The MCC301M can accept speaker level inputs at its Input Jacks Refer to the diagram for NEGATIVE SPEAKER OUTPUT connection SH POSITIVE SPEAKER OUTPUT Melntosh Introduction Now you can take advantage of traditional McInt
17. size as close as possible to the battery McIntosh Power Amplifier Upper Range How to Connect for Full Range There are many different possible Vehicle Audio System combinations utilizing the MCC301M Power Amplifier It is recommended that a professional who is skilled in all aspects of Vehicle Audio Systems assist you in the selec How to Connect for Full Range Connect a wire from a McIntosh Control Center with Power Guard to the MCC301M PG Connector on the right side of the amplifier Connect a cable up to 12AWG from the loudspeaker tion and installation The illustration below is just one of system connected to the Amplifier s A OUTPUT Ter the many possible combinations minals being careful to observe the correct polarities Note In a typical installation a second MCC301M would be 4 Connect an audio cable from the Control Center Left needed for the Right Channel Channel Output to the McIntosh Power Amplifier Input 1 Connect a wire from the Control Center Amp On to the 1 MCC301M ON Connector on the right side ofthe am 5 Connect the MCC301M to the vehicle battery termi plifier nals using size 4AWG maximum cables Note All cables should be connected to the amplifier before connecting the DC power cables to the battery Note It is advisable to place an inline fuse of a suitable size as close as possible to the battery Midrange Tweeter McIntosh Control Center Power
18. tall the Gold Faceplate Control Panel and all 4 equalizer and sensitivity knobs 12 Re connect the power cables to the vehicle battery If the replacement fuse s fails again have the amplifier repaired at a McIntosh Service Center Figure 9 Figure 10 12 How to Replace the Fuses Remove Top Cover Screws Remove Top Cover Screws Remove Three Screws mo gt Remove Three Screws Location of the four fuses I MCC301M Block Diagram PGO gt PG LIGHT IN 1 m METER AMP a POWER QUT1 GUARD 1 SOURCE POWER PRE ONE BAND SUBSONIC SUBWOOFER OUTPUTS switcy M SENSITIVITY Fel GUARD EQUALIZER FILTER FILTER POWER IN2 BAL ATTENUATOR 40Hz 2kHz 20Hz 28Hz 40Hz 120Hz Fr AMP 1 2 SUB T T CHAN 1 2 OUT 2 SUM EQUALIZER SUBSONIC SUBWOOFER FEEDBACK LEVEL FILTER FILTER CONTROL SWITCH SWITCH SUBWOOFER SUBWOOEER 12dB OUT 20 28 OUT IN 0O REMOTE O LEVEL B CONTROL 56V SUB Os 15V OUT DC O gt Fuses fl SHOWER REGULATOR 18 POWER SUPPLY 4 4 1 POWER ILLUMINATION POWER 15V SUPPLY gt 15V REGULATOR SWITCH CONTROLLER M
19. uce heat 10 Do not use this equipment near water 11 Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids are placed on the equipment 12 Do not mount this product with an unstable bracket as the equipment may fall causing serious injury to a person and serious damage to the product Connection 13 Route DC power cords so that they are not likely to be pinched by items placed upon or against them paying particular attention to the point where they enter the instrument Care of Equipment 14 15 Clean only with dry cloth Do not permit objects or liquids of any kind to be pushed spilled and or fall into the equipment through enclosure openings Repair of Equipment 16 Refer all servicing to qualified service personnel Ser vicing is required when the equipment has been dam aged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the equipment the equipment has been exposed to rain or moisture does not operate normally or has been dropped Do not attempt to service beyond that described in the operating instructions All other service should be re ferred to qualified service personnel When replacement parts are required be sure the ser vice technician has used replacement parts specified by McIntosh or have the same characteristics as the origi nal part Unauthorized substitutions may result
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