McIntosh MC303 Three Channel Power Amplifier ... - TransTec

Connector Information, Introduction and Performance FeaturesGeneral Information, con’t6. When discarding the unit, comply with local rulesor regulations. Batteries should never be thrownaway or incinerated but disposed of in accordancewith the local regulations concerning battery disposal.7. For additional information on the MC303 and otherMcIntosh Products please vist the McIntosh WebSite at www.mcintoshlabs.com.8. When the MC303 is operated in the USA or Canada and themain fuse, located on the rear panel, is in need of replacementuse only the following part:Bussman ABC-15-R or Littlefuse 314-015PConnector and Cable InformationXLR ConnectorsBelow is the Pin configuration for the XLR Balanced InputConnectors on the MC303. Refer to the diagram for connection:PIN 1: Shield/GroundPIN 2: + OutputPIN 3: - OutputPower Control ConnectorThe MC303’s Power Control Inputs receive On/Off signalsof +5 volts. An additional connectionis for controlling the illumination of PowerControlthe MC303 Power Output Meters.MeterThe 1/8 inch stereo mini phone plug Illuminationconnects to a McIntosh A/V Control ControlGroundCenter Power Control Output.Note: The Power Control Connecting Cable is available fromthe McIntosh Parts Department:Data and Power Control Cable Part No. 170-202Six foot, shielded 2 conductor, with 1/8 inch stereo miniphone plugs on each end.IntroductionNow you can take advantage of traditional McIntoshstandards of excellence in the MC303 Power Amplifier.The 300 watt high current output per channel will driveany high quality loudspeaker system to its ultimate performance.The MC303 reproduction is sonically transparentand absolutely accurate. The McIntosh Sound is “TheSound of the Music Itself.”Performance FeaturesPIN 2 PIN 1PIN 3• Power OutputThe MC303 is a Power Amplifier with a capability of 300watts per channel (all channels driven) into 2, 4 or 8 ohmspeakers with less than 0.005% distortion. The Power Amplifiercircuitry uses Thermal Trak 1 Output Transistors forlower distortion and cool operation.• Balanced and Unbalanced InputsBalanced connections guard against induced noise and allowlong cable runs without compromising sound quality.• Power GuardThe patented McIntosh Power Guard circuit prevents theamplifier from being over driven into clipping, with itsharsh distorted sound that can also damage your valuableloudspeakers.• Sentry Monitor and Thermal ProtectionMcIntosh Sentry Monitor power output stage protectioncircuits ensure the MC303 will have a long and trouble freeoperating life. Built-in Thermal Protection Circuits guardagainst overheating.• Patented AutoformerMcIntosh designed and manufactured Output Autoformersprovide an ideal match between the amplifier output stagesand speaker loads of 2, 4 and 8 ohms. The Autoformersalso provide perfect DC protection for your valuable loudspeakers.• Special Power SupplyA regulated Power Supply, a very large Power Transformerand Capacitors ensure stable noise free operation eventhough the power line varies.• Illuminated Power MeterThe Illuminated Power Output Watt Meter on the MC303is peak responding, and indicates the power output of theamplifier. The Front Panel Meter Illumination may beswitched Off at any time.• Fiber Optic Solid State Front Panel IlluminationThe even illumination of the Front Panel is accomplishedby the combination of custom designed Fiber Optic LightDiffusers and extra long life Light Emitting Diodes(LEDs).• Glass Front Panel and Super Mirror Chassis FinishThe famous McIntosh Illuminated Glass Front Panel andthe Stainless Steel Chassis with Super Mirror Finish ensuresthe pristine beauty of the MC303 will be retained formany years.1ThermalTrak and ON Semiconductor are trademarks of SemiconductorComponents Industries, LLC4