Harman/Kardon MA362 free download

File name HarmanKardon-MA362 pwramp.pdf

AUDIOACCESS MA-362 TWELVE CHANNEL AMPLIFIER PRELIMINARY SERVICE MANUAL Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 www.audioaccess.com MA-362 Audioaccess Twelve Channel Amplifier ® The Audioaccess MA-362 Twelve Channel Amplifier represents a high value approach while providing twelve channels of clean amplifier power for multi-room system applications. Power to Spare With a power rating of 50 Watts per channel at 8 Ohms from 20Hz to 20kHz with less than .05% THD, the MA-362 will drive virtually any in-wall loudspeaker to room filling volume. Power into 4 Ohms is even more impressive at 75 Watts per channel. All channels may be bridged if additional power is required. Cool operation is ensured with a design incorporating heat sinks, flow through ventilation and low-noise fans. After a series of careful evaluations and tests, Madrigal has chosen to implement a conservative and proven design philosophy with the MA-362 with the added benefit of improved sound quality and long component life. Power for each channel is delivered by a pair of high current output transistors capable of delivering over 200 watts, much higher power than the rated 50 watts per channel. For example, the output transistors for each channel can handle up to 12 amps. At rated power, the MA-362 is drawing only about 3 amps of current per channel, ensuring its reliable performance. Control Capabilities Each pair of channels is controlled by a Trigger Source Selector, a three-position switch that selects signal sensing, voltage trigger input or link (to the trigger signal of the zone to the immediate left) as the source for muting control within each individual zone. A two position Signal Link Selector, is also provided and is used to link a zone to the Signal Input connector of the zone to its left. Installation Flexibility Ease of installation, a hallmark of all Audioaccess products is maintained in the new MA-362. An external speaker termination board can be ordered in advance to allow the installing dealer to "pre-wire" all of the loudspeakers in the system before the amplifier is delivered for final installation. Final hook up consists of plugging the speaker termination board into a slot in the rear panel of the amplifier. Summary The MA-362 features, performance and reliability make it the perfect amplifier choice for a wide variety of multi-room audio system applications. Simply Ingenious Features L Rack mountable chassis L Discrete amplifier design for improved sound quality L Signal Input Connector: six dual RCA jacks, one per two channel L Four position switch to select Stereo, Bridged Right, Bridged Left, or mono operation for each zone L Independent level controls for each amp channel L Trigger Input, euro-style connector, accepts 3 to 24V AC or DC, to "unmute" amp channels in the zone L Trigger Source Selector: three position switch to select signal sensing, voltage trigger input or link (to the trigger signal of the zone to the im