CROWN-Macro-Reference-维修操作说明书手册-2-of-4-mrservicemanual2of4

Rev.Macro Reference Service ManualGr▣uUn@Stereo-Mono:A three-position switch located on the back5 Specificationspanel which selects between STEREO,BRIDGE-MONO,and PARALLEL-MONO modes of operation.Input:A two-position switch located inside the amplifier5.1 Performanceselects between two input sensitivities.(A voltage gain of 26Note:8 ohm loads were used unless specified otherwise.dB or a sensitivity of.775 V for full rated output.)Frequency Response:3 Hz to 100 kHz bandwidth.Level Dynamic Range Meter:A two-position switch0.1 dB 20 Hz to 20 kHz at 1 watt.located behind the front panel sets the display meter on thefront panel as either a dB level meter or a Dynamic RangeSignal to Noise Ratio:120 dB (A-weighted)below ratedpower meter.output at 26 dB gain.IM Distortion:Less than 0.005%from 760 watts through5.4 Indicators-10 dB,increasing smoothly to a maximum of 0.025%atEnable:This amber indicator is on while the amplifier is on-40 dB,measured at 26 dB gain.to show that the low-voltage power supply is operating.Damping Factor:Greater than 20,000 from 10 Hz to 200ODEP:Two amber multifunction indicators which showHz.1.800 at 1 kHzthe reserve energy status of each channel.Normally they arebrightly illuminated to show that reserve energy is available.5.2 PowerIn the rare event there is no energy reserve,they will dim inPower Bandwidth:proportion to ODEP limiting.They remain off if a tripped10 Hz to 25 kHz-1.0 dB.breaker,blown fuse or thermal shutdown occurs.(In thecase of a thermal shutdown,the amplifier will retumn to7 Hz to 27 kHz -1.5 dB.normal operation after cooling down to a safe operating5 Hz to 28 kHz.-2.0 dB.temperature.)4 Hz to 30 kHz -3.0 dB.IOC:Two yellow indicators which are normally off.In theOutput Power:unlikely event the output waveform differs from that of theNote:The following power specifications are for STEREOinput by 0.05%or more,they will flash.In this way,they act(two-channel)operation with a THD of 0.02%or lessas sensitive distortion indicators to provide proof ofperformance.Note:It is normal for the Channel 2 IOCwhile both channels are driven.indicator to remain in PARALLEL-MONO mode.760 watts per channel into 8 ohms.Signal:Two green Signal presence indicators flash in sync1,160 watts per channel into 4 ohms.with the input signal to show its presence.1,500 watts per channel into 2 ohms.Dynamic Range Level Meter:Two green five-segmentLoad Impedance:Rated for 16,8,4,and2ohm usage only.meters (one per channel)display either the output dynamicSafe with all types of loads,even reactive ones.range in dB or the output level in dB.(Your unit comesfactory-set to display dynamic range.)As dynamic rangeRequired AC Mains:50/60 Hz,at 100,120,200,220/230,meters they show the ratio of the peak to average power of240 VAC.)Draws 90 watts or less at idle.With a continuouseach channel.As outputlevel meters they show how high the1 kHzsinewave output of 760 watts into 8 ohms in STEREOmode,as many as 26 amps are drawn from a 120 VACoutput levels are r