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PLD Series Amplifiers

21

Application Guide—Portable PA

Rev. E, Apr. 2015

Application: Stereo passive tops and subs

• Two 8

Ω

medium-power single-woofer passive tops, stereo

• Two 8

Ω

medium-power single subwoofers, stereo

Equipment

Current draw

120 V / 230 V

Rack

spaces Total watts

Weight

Old paradigm

Two medium-power
two-channel amps

~8 A / ~4 A

4

1200

~80 lb

New paradigm

PLD4.2

4.6 A / 2.3 A

2

2000

18.5 lb

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Содержание PDL4.2

Страница 1: ...PLD Series Power Amplifier Application Guide for Portable PA www qsc com...

Страница 2: ...Team Address QSC Audio Products LLC 1675 MacArthur Boulevard Costa Mesa CA 92626 1468 USA Main Switchboard Tel 800 854 4079 US and Canada Tel 1 714 754 6175 Fax 1 714 754 6174 E Mail info qscaudio com...

Страница 3: ...rs on one mix 24 Application Stereo full range mains with four monitor mixes 25 Application Stereo passive tops and subs with two monitor mixes 26 Application Stereo passive tops and mono sub 27 Appli...

Страница 4: ...and other countries Felxible Amplifier Summing Technology Intrinsic Correction and Amplifier Navigator are trademarks of QSC Audio Prod ucts LLC Windows is a registered trademark of the Microsoft gro...

Страница 5: ...nt years have increasingly met levels of performance and reliability that were impossible some 20 or 30 years ago The PLD Series amplifiers from QSC take it all a few steps further while adding such v...

Страница 6: ...density Among professional power amps the most common size is 2RU and the vast majority also have two audio channels That means that if you happen to need say eight channels of amplification you ll n...

Страница 7: ...e external devices The processing functions available include Five bands of parametric EQ per channel High and or low pass filtering with choice of frequency slope and filter type High and low shelvin...

Страница 8: ...ations Block diagram From input to output the PLD Series power amps are unique The electronically balanced inputs feed an analog input cir cuit with selectable sensitivity at maximum gain either 4 dBu...

Страница 9: ...inefficiencies in the device In devices where the current waveform is still sinusoidal but shifted out of phase with the voltage as often happens with AC motors under various load conditions or is not...

Страница 10: ...ounts of current The narrow conduction time in the rectifiers of a non PFC power supply above results in sharp current peaks below Power factor correction An advantage of switch mode power supply tech...

Страница 11: ...e of the signal The pulse stream switches the output transistors fully on and off so they dissipate very little power even at high output levels A passive network of inductors and capacitors smooths o...

Страница 12: ...ey re connected together A power amp is a voltage source as is a battery The difference is that while the battery puts out a constant DC voltage the power amp puts out a varying voltage in the form of...

Страница 13: ...sources in parallel however double the available current In PLD amplifiers parallel is suitable for load impedances of 2 to 4 Paralleling three or four amp channels triples or quadruples the available...

Страница 14: ...parallel and series This doubles the voltage and the current potentially quadrupling the available power to the load Arranging four voltage sources in a combined series parallel arrangement doubles b...

Страница 15: ...er Navigator offers a complete selection of operations Amp firmware check and update Input configuration Output configuration including preset selection editing and saving Selecting and editing loudsp...

Страница 16: ...nel C and Input 4 to channel D F2 Channels A and B parallel C and D separate Suitable for a high power 2 4 full range loudspeaker load and two separate full range loudspeaker loads of any impedance 2...

Страница 17: ...plus channel B HF channel C LF plus channel D HF This preset uses all four output channels separately with these input and DSP settings Input 1 feeds channels A and B input 2 feeds channels C and D Th...

Страница 18: ...channels C and D These parameters are only a starting point you can alter any of them and save the configuration into a user preset F15 Single bi amp mode Channels A and B bridged for 4 8 LF channels...

Страница 19: ...48 dB octave But terworth high pass to 1 5 kHz 24 dB octave Butterworth low pass Channel D has a high pass filter at 1 5 kHz 48 dB octave Butterworth All the channels get their signal from Input 1 Th...

Страница 20: ...r drivers with larger voice coils can generally handle higher power than those with smaller ones The dust cap in the center of the cone may or may not be the same diameter as the voice coil consult th...

Страница 21: ...ve tops and subs Two 8 medium power single woofer passive tops stereo Two 8 medium power single subwoofers stereo Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Two med...

Страница 22: ...onitor mixes Two 8 medium power single woofer passive full range stereo Two 8 medium power passive monitors two mixes Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Two...

Страница 23: ...xes Two 8 medium power single woofer passive tops stereo Two 8 medium power single subwoofers mono Two 8 medium power passive monitors two mixes Equipment Current draw 120 V 230 V Rack spaces Total wa...

Страница 24: ...power single woofer passive tops mono Two 4 medium power double subwoofers mono Two 8 medium power passive monitors one mix Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old parad...

Страница 25: ...s Two 4 medium power double woofer passive full range mains stereo Four 8 medium power passive monitors four mixes Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Two lo...

Страница 26: ...double woofer passive tops stereo Two 4 high power double subwoofers stereo Two 8 medium power passive monitors two mixes Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradig...

Страница 27: ...no sub Two 8 medium power single woofer passive tops stereo One 4 high power double subwoofer Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Medium power two channel am...

Страница 28: ...Two 4 medium power double woofer passive tops stereo Two 8 high power single subwoofers mono Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Medium power two channel amp...

Страница 29: ...n Stereo bi amp mains Two 4 8 high power double woofer bi amp mains stereo Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Low power two channel amp High power two chann...

Страница 30: ...s Two 8 high power single woofer bi amp mains stereo Two 8 high power passive monitors two mixes Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Two low power two channe...

Страница 31: ...igh power single woofer bi amp tops mono One 4 high power double woofer subwoofer Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Low power two channel amp High power tw...

Страница 32: ...n Stereo full range mains Two 4 medium power double woofer passive main loudspeakers stereo Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm High power two channel amp 10...

Страница 33: ...sive tops and subs Two 8 high power single woofer passive tops stereo Two 8 high power single subwoofers stereo Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Two high...

Страница 34: ...and subs Two 4 high power double woofer passive tops stereo Two 4 high power double subwoofers stereo Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Two high power two...

Страница 35: ...reo bi amp mains Two 8 high power single woofer bi amp loudspeakers stereo Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Two high power two channel amps 13 A 6 5 A 6 2...

Страница 36: ...n Stereo bi amp mains Two 4 high power double woofer bi amp loudspeakers stereo Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Two high power two channel amps 13 A 6 5...

Страница 37: ...ngle woofer bi amp loudspeakers stereo Two 8 high power single subwoofers mono Two 8 high power passive monitors one mix Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm...

Страница 38: ...woofer bi amp loudspeakers stereo Two 4 high power double subwoofers stereo Equipment Current draw 120 V 230 V Rack spaces Total watts Weight Old paradigm Low power two channel amp Two high power two...

Страница 39: ...ximum gain 4 dBu sensitivity 34 dB 38 4 dB 38 4 dB Damping factor 8 load 150 150 150 Input impedance 10 k balanced or unbalanced 10 k balanced or unbalanced 10 k balanced or unbalanced Maximum RMS inp...

Страница 40: ...QSC Audio Products LLC Application Engineering Team qsc com...

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