Qsc - Pl15X 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 1.51.51.51.51.5X X X X X he PowerLight 1.5X is an advanced dual power professional audio amplifier featuring uncomp

2、romised audio performance. Designed specifically for use with bi-amplified speaker systems, power and performance of each channel is tailored for its intended load. A new high frequency power supply, utilizing QSCs PowerWave Switching Technology, has been combined with the rugged audio amplification

3、 circuits of traditional QSC amplifiers to produce an amplifier with incredible audio performance, reliability, and thermal capacity. The PowerLight 1.5X is rated at 450 watts/channel into 8 ohms, 700 watts/channel into 4 ohms, and 1000 watts/channel into 2 ohms for the low frequency channel, making

4、 it ideal for powering stage monitors and any high power, bi-amplified speaker systems. PowerWave Switching Technology provides increased power supply regulation to maintain excellent low frequency response to 20 Hz. Outstanding audio performance and reliability, networkability, and light weight mak

5、e this amplifier ideal for all critical sound system applications. Designed specifically for bi-amp applications 1000 watts (Low Frequency) at 2 700 watts (Low Frequency) at 4 325 watts (High Frequency) at 4 200 watts (High Frequency) at 8 (guaranteed minimum specs) Low Frequency channel features a

6、high efficiency, Class H, 2-step output circuit for high power, better thermal performance and lower AC current consumption High Frequency channel features a full complementary class AB output circuit for ultra-low distortion and smooth frequency response Advanced thermal management system Clip Limi

7、ter (user defeatable) reduces distortion, protects loud speakers PowerWave Switching Technologyfor improved audio performance Detented gain controls with 2 dB steps for easy resetting Comprehensive LED status arrays Variable speed fan, for quiet operation DC, sub audio, and thermal overload protecti

8、on Patented Output Averaging short-circuit protection Neutrik ”Combo“ (XLR CH 2: 1.0 Vrms, for rated power (8 ohms) CONTROLS: Front: AC Switch, Ch 1 and Ch 2 Gain Knobs, Ch 1 and Ch 2 Clip Limiter Switches Back: Remote AC Power Control Terminals VOLTAGE GAIN: CH 1: 50 (34 dB); CH 2: 40 (32 dB) INPUT

9、 IMPEDANCE: 10K unbalanced, 20K balanced INDICATORS: PROT:Red LEDCLIP:Red LED, 1 per ch. STANDBY:Yellow LEDLEVEL -10:Yellow LED, 1 per ch. PWR-ON:Green LEDLEVEL -20:Yellow LED, 1 per ch. SIG-PRESENT:Green LED, 1 per ch. CONNECTORS: (each channel) Input:Barrier strip and Neutrik “Combo” XLR and ” inp

10、ut Speakers:“Touch proof” binding posts Data Port:HD15 female COOLING: Variable speed fan, rear-to-front air flow. AMPLIFIER PROTECTION: Full short circuit, open circuit, thermal, ultrasonic, and RF protection. Stable into reactive or mismatched loads. LOAD PROTECTION: On/off muting. DC-fault power

11、supply shut down. OUTPUT CIRCUIT TYPE: CH 1: Complementary linear outputs. 2-step high efficiency circuit CH 2: Complementary linear outputs. Class AB circuit POWER REQUIREMENTS: 120, 230 VAC, 5060 Hz 120V CURRENT CONSUMPTION: Multiply currents by 0.5 for 230V units.*Pink noise DIMENSIONS: 19.0 (48.

12、3 cm) rack mounting 3.5 (8.9 cm) tall (2 spaces) 17.9 (45.5 cm) deep (rear support ears) WEIGHT: 18 lbs (8.2 kg) net, 24 lbs (10.6 kg) shipping ARCHITECTS AND ENGINEERS SPECIFICATIONS The amplifier shall contain all solid-state circuitry, using complementary silicon output devices. The higher-powere

13、d of the two channels shall use a two- step Class H configuration and shall exceed the efficiency of an ordinary class-B linear output circuit. The lower-powered channel shall use a Class AB configuration. The amplifier shall operate from 5060 Hz AC power. The amplifier shall operate from a 15A 120V

14、 AC outlet, drawing less than 775 VA when driven with random program material at 1/8 rated power into four ohm loads. The amplifier shall be supplied with a single molded AC cord having a standard NEMA 15 AC plug for 120 V units; 220240 V units shall be equipped with a 320-C19 16A IEC mains connecto

15、r and a removable power cord. The amplifier shall comply with FCC part 15 Class B requirements. The amplifier shall employ forced-air cooling with two variable speed fans for minimum acoustic noise. Air flow shall be from rear to front to avoid tempera- ture rise inside the rack. Rack mounting shall

16、 be possible without clearance between amplifiers for ventilation. The amplifier shall be capable of continu- ous operation at 1/3 power into four-ohm loads, in ambient temperatures up to 104F (40C). The amplifier shall contain two independent amplifier channels and a switching power supply. All amp

17、lifier protection systems shall be self- resetting upon removal of fault. Each channel shall have protective cir- cuitry against short circuit 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 exces

18、sive temperature rise. Both channels shall have synchronized on-off muting, acting for three seconds after turn- on, and within second after 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-d

19、efeatable clip limiter. The channels shall be configured for bi-amp usage, suitable for use with an external active crossover. Channel 1 shall be designated the “low frequency” channel, and Channel 2 the “high frequency” channel. The front panel shall contain the AC power switch; a green LED power-o

20、n indicator; a yellow LED standby indicator and a red protect mode indicator. Each channel shall have the following controls and displays: a front panel detented gain control, with 11 gain settings (Low Frequency channel: 34 dB, 32 dB, 30 dB, 28 dB, 26 dB, 24 dB, 22 dB, 20 dB, 16 dB, 12 dB, -; High

21、Frequncy channel: 32 dB, 30 dB, 28 dB, 26 dB, 24 dB, 22 dB, 20 dB, 18 dB, 14 dB, 10 dB, -); a recessed front panel clip limiter defeat switch; a green signal present LED triggering at -30 dB; two yellow LED output indicators, triggering at -20 dB and -10 dB; a red LED showing true amplifier clipping

22、. The output connectors for each channel shall be “touchproof” binding posts, accepting banana plugs or up to 7 AWG (4 mm dia.) wire. The rear panel input shall provide barrier strip and Neutrik “Combo” connectors for each channel. The XLR input shall be wired with pin 2 high, the TRS input shall be

23、 wired with tip positive, ring negative, and sleeve grounded. Inputs shall be electronically balanced, with a minimum impedance 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 amplifier o

24、perational status signals to and from a QSC MultiSignal Processor. 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 fron

25、t panel power switch shall function as a master switch that removes all AC power. The channels shall be capable of meeting the following performance criteria with both channels driven: sine-wave output power of 450 watts (Low Fre- quency) and 200 watts (High Frequency) into 8 ohms, and 700 watts (Lo

26、w Fre- quency) and 325 watts (High Frequency) into 4 ohms, 20 Hz to 20 kHz, with less than 0.1% THD. Power into 2-ohm loads shall be 1000 watts (Low Frequency) and 500 watts (High Frequency), at 1 kHz and no more than 1% THD. Frequency response at 3 dB below rated power shall be 20 Hz to 20 kHz with

27、in 0.15 dB. The voltage gain of the low frequency channel shall be 50, equivalent to 34 dB, and the input sensitivity shall be 1.12 Vrms. The voltage gain of the high fre- quency channel shall be 40, equivalent to 32 dB, and the input sensitivity shall be 1.0 Vrms. The signal to noise ratio over the

28、 range of 20 Hz to 20 kHz shall exceed 108 dB relative to full output. IHF damping factor 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 1.5X. DAOL MARGORPLAMRON *REWOP8 / 1 MARGORPXAM REWOP3 / 1 EVAWENISXAM GNIPPI LC%1 8 A6 . 3A8 . 6A0 . 21 4 A4 . 6A8 . 01A02 2 A6 . 9A2 . 61A03 RadioFans.CN 收音机爱 好者资料库