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ZÄHL HM1

Manual V 1.0

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Summary of Contents for HM1

Page 1: ...Z HL HM1 Manual V 1 0...

Page 2: ...onal users perfect impulse reproduction ultra wide frequency response extremly low impedance output precisely controls complex loads pure analogue design consistent dual mono layout logic circuits wit...

Page 3: ...ources 12 Note 12 Sound Adjustment 12 Low and high frequency adjustment 12 Stereo Base control a little theory 13 Stereo Base control what it does 13 Balance 13 Headphones Outputs Balanced Connection...

Page 4: ...o not continue to operate the equipment Have the equipment checked at your dealer s workshop or a person who is qualified to do such checks 14 When shipping use a package which protects the equipment...

Page 5: ...apter Make sure that the locating peg shows upwards Turn the strain relief nut clockwise Push the connector slightly after a few turns The connector is seated correctly when the rubber seal on the soc...

Page 6: ...Z HL HM1 MANUAL V 1 0 P 6 LEGEND LEGEND...

Page 7: ...LEGEND P 7...

Page 8: ...setup Streamer to HM1 Input A analogue source to Input B active speakers to Line Out Two sources connected to Inputs A and B precision level meter connected to Line Output Source levels can be exactly...

Page 9: ...r in its purest form switchable negative feedback servo while maintaining Class A operation Precise finely tuned tools for sound adjustment Stereo base control for adjusting the stereo image spatialit...

Page 10: ...ed by negative feedback Servo Since there is no crossover distortion there is nothing for the feedback circuitry to correct Rather it only corrects the errors which result from the interaction between...

Page 11: ...heoretically always runs a little behind the action which can lead to artefacts in the signal However modern negative feedback audio power amplifiers are usually not purely Class AB Very effective tec...

Page 12: ...ave an additional linear taper When a volume control is set to the full counterclockwise position this linear taper provides a control voltage to cut off the audio signal at a suitable point in the si...

Page 13: ...ol one or two steps to the right The leftmost position is mono This is the preferred setting for early stereo recordings when individual instruments have been mixed to the extreme left or right withou...

Page 14: ...ring two stereo sources the result may be recorded using one of the outputs The same applies when using the HM1 as a mixing console A Thru Output The A Thru signal is tapped from Input channel A post...

Page 15: ...rrent Only this way an amplifier can produce absolutely undistorted output signals Realisation inside the HM1 In the HM1 the power supplies for left and right channels are separate for preamplifiers a...

Page 16: ...ains transformer via a relay Worldwide operation The standby power supply has a wide range input is a purely linear design The mains input is equipped with one of the best interference filters availab...

Page 17: ...ne I Os Inputs Impedance 20K max level 23dBu Outputs Impedance 47 max level 23dBu balanced I Os transformer like behaviour hot or cold may be connected to ground without loss Gain Line Line 0dB additi...

Page 18: ...MP1 Unplug the power cable Find the fuse holder drawer on the mains input assembly between mains input connector and mains switch Use your thumbnails or a small flat blade screwdriver to unlock the la...

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