Qsc - Pl20Hv 电路图.pdf

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1、FEATURES 1675 MacArthur Boulevard Costa Mesa, California 92626-1468 USA Ph: 714/754-6175 Fax: 714/754-6174 Web: E-mail: PowerLight? T PowerLightPowerLightPowerLightPowerLightPowerLight 2.02.02.02.02.0HV HVHVHVHV he PowerLight 2.0HV is an advanced professional audio amplifier featuring uncompromised

2、audio performance. A new high frequency power supply, utilizing QSCs PowerWave Switching Technology, has been combined with the rugged audio amplification circuits of traditional QSC amplifiers to produce an amplifier with incredible reliability, thermal capacity, and audio performance. A special “H

3、igh Voltage” output circuit provides maximum power at 16, 8, and 4 ohm loads. The PowerLight 2.0HV is rated at 425 watts/channel into 16 ohms, 725 watts/ channel into 8 ohms, and 1000 watts/channel into 4 ohms, making it ideal for powering stage monitors, subwoofers and high power, passive full-rang

4、e speaker systems. In bi-amplified stage monitor applications, up to 1200 watts/channel at 4 ohms can be delivered to the woofers. Outstanding audio performance and reliability, high efficiency design, networkability, and light weight make this amplifier ideal for all critical sound system applicati

5、ons. 1000 watts per channel at 4 ohms 725 watts per channel at 8 ohms (guaranteed minimum spec) Each channel capable of driving 70-volt lines directlyup to 650 watts Advanced thermal management system Clip limiter (user defeatable) reduces distortion, protects speakers PowerWave Switching Technology

6、for improved audio performance Detented gain controls with 2 dB steps for easy resetting Comprehensive LED status arrays High efficiency, 2-step output circuit for improved thermal performance and lower AC current consumption Two variable speed fans, for quiet operation DC, subsonic audio, and therm

7、al overload protection Patented Output Averaging short-circuit protection Neutrik ”Combo“ (XLR 220240 V units shall be equipped with a 320-C19 16A IEC mains connector and a removable power cord. The amplifier shall comply with FCC part 15 Class B requirements. The amplifier shall employ forced-air c

8、ooling with two variable speed fans for minimum acoustic noise. Air flow shall be from rear to front to avoid temperature rise inside the rack. Rack mounting shall be possible without clearance between amplifiers for ventilation. The amplifier shall be capable of continuous operation at 1/3 power in

9、to eight-ohm loads, in ambient temperatures up to 104F (40C). The amplifier shall contain two independent amplifier channels and a switching power supply. All amplifier protection systems shall be self- resetting upon removal of fault. Each channel shall have protective cir- cuitry against short cir

10、cuit or mismatched loads. Each channel shall moni- tor heat sink temperature and shall trigger fan speed boost, and if neces- sary, signal muting to prevent excessive temperature rise. Both channels shall have synchronized on-off muting, acting for three seconds after turn- on, and within second aft

11、er turn-off or loss of AC power. Each channel shall have DC fault protection for the load, consisting of a power supply shutdown. Each channel shall have a user-defeatable clip limiter. The front panel shall contain the AC power switch; a green LED power-on indicator; a yellow LED standby indicator

12、and a red protect mode indica- tor. Each channel shall have the following controls and displays: A front panel detented gain control, with 11 gain settings: 36 dB, 34 dB, 32 dB, 30 dB, 28 dB, 26 dB, 24 dB, 22 dB, 18 dB, 14 dB, -; a recessed front panel clip limiter defeat switch; a green signal pres

13、ent LED triggering at -30 dB; two yellow LED output indicators, triggering at -20 dB and -10 dB; a red LED showing true amplifier clipping. The output connectors for each channel shall be “touchproof” binding posts, accepting banana plugs or up to 7 AWG (4 mm dia.) wire. Connec- tor terminals are ar

14、ranged to allow bridge mono connection. The rear panel input shall provide barrier strip and Neutrik “Combo” con- nectors for each channel. The XLR input shall be wired with pin 2 high, the TRS input shall be wired with tip positive, ring negative, and sleeve grounded. Inputs shall be electronically

15、 balanced, with a minimum im- pedance of 10 kilohms per side, and a common mode rejection of at least 50 dB from 20 Hz to 20 kHz. A High Density 15-pin Data Port connector shall carry both audio and am- plifier operational status signals to and from a QSC MultiSignal Proces- sor. Switches shall be p

16、rovided for stereo-bridging and parallel inputs. A two- position barrier strip on the rear panel shall be used for remote Power Supply Enable; a contact closure shall place the both amplifier channels in standby mode, when the front panel power switch is in the on position. The front panel power swi

17、tch shall function as a master switch that removes all AC power. Each channel shall be capable of meeting the following performance cri- teria with both channels driven: Sine-wave output power of 400 watts into sixteen ohms, and 650 watts into eight ohms, 20 Hz to 20 kHz, with less than 0.1% THD. Fr

18、equency response at 3 dB below rated power shall be 20 Hz to 20 kHz within 0.15 dB. The voltage gain shall be 63, equivalent to 36 dB, and the input sensitivity shall be 1.16 Vrms. The signal to noise ratio over the range of 20 Hz to 20 kHz shall exceed 108 dB relative to full output. IHF damping fa

19、ctor shall exceed 350. The amplifier chassis shall occupy two rack spaces, with provision for securing the rear corners. Depth from mounting surface to tips of rear supports shall be 17.9 (45.5 cm). Weight shall not exceed 18 lbs. (8.2 kg.). The amplifier shall be the QSC Audio Products PowerLight 2

20、.0HV. DAOL MARGORPLAMRON *REWOP8 / 1 MARGORPXAM REWOP3 / 1 EVAWENISXAM GNIPPI LC%1 61 A5 . 4A5 . 8A71 8 A7 . 6A2 . 21A32 4 A6 . 9A3 . 81A63 PowerLight 2.0HV Specifications SLV RING TIP P2P1 P3 RING P2P1 P3 D A T A P O R T SLV RING TIP OUTPUT OUTPUT INPUT INPUT CH1 CH2 CH2 CH1 STANDBY POWER SUPPLY CO

21、NTROL ENABLE NOT INTENDED FOR 2 LOADS TMTM INPUT IMPEDANCE 20K BALANCED 10K UNBALANCED INPUT SENSITIVITY POWERLIGHT 1.0HV 0.98V POWERLIGHT 2.0HV 1.16V MINIMUM RECOMMENDED LOAD: 4 PER CHANNEL POWERLIGHT HVX MODELS ARE FAST TRACKING CLIP LIMITER: LOCATED ON THE FRONT PANEL. POWERWAVE CLIP LIM ON CLIP LIM OFF RadioFans.CN 收音机爱 好者资料库