ElectroVoice-P3000-pwr-sm 电路图 维修手册.pdf

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1、 P3000 PRECISION SERIES SERVICE MANUAL RadioFans.CN 收音机爱 好者资料库 The lightning flash with arrowhead symbol, within an equi- lateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the products enclosure that may be of sufficient magnitude to constitute

2、a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintance (servicing) instructions in the literature accompanying the appliance. IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions

3、. 2. Keep these instructions. 3. Heed all warnings. 4.Follow all instructions. 5. Do not use this apparatus near water. 6.Clean only with a damp cloth. 7. Do not block any of the ventilation openings. Install in accordance with the manufactures instructions. 8.Do not install near any heat sources su

4、ch as radiators, heat registers, stoves, or other apparatus that produce heat. 9.Only use attachments/accessories specified by the manufacturer. 10. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or

5、plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. For US and CANADA only: Do not defeat the safety purpose of the grounding-type plug. A grounding type plug has two b

6、lades and a third grounding prong. The wide blade or the third prong are provided for your safety. When the provided plug does not fit into your outlet, consult an electrican for replacement of the absolete outlet. 1. Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65

7、 - 94 have to be obeyed when servicing the appliance. 2. Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be operated and is connected to the mains 3. Switch off the power before retrofitting any extensions, changing the mains voltage or th

8、e output voltage. 4. The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure), respectively between the mains poles has to be 3 mm and needs to be minded at all times. The minimum distance between parts carrying mains voltage and any switches or brea

9、kers that are not connected to the mains (secondary parts) has to be 6 mm and needs to be minded at all times. 5. Replacing special components that are marked in the circuit diagram using the security symbol (Note) is only permissible when using original parts. 6. Altering the circuitry without prio

10、r consent or advice is not legitimate. 7. Any work security regulations that are applicable at the location where the appliance is being serviced have to be strictly obeyed. This applies also to any regulations about the work place itself. 8. All instructions concerning the handling of MOS - circuit

11、s have to be observed. Note: SAFETY COMPONENT (HAS TO BE REPLACED WITH ORIGINAL PART ONLY) IMPORTANT SERVICE INSTRUCTIONS CAUTION: These servicing instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the

12、 Operating Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel. 1-2 RadioFans.CN 收音机爱 好者资料库 TECHNICAL SPECIFICATIONS at rated output power 8ohms, one channel driven, unless otherwise specified Output Power (20Hz - 20kHz /THD 0,1%) into8 Ohms 2 x 750 W i

13、nto 4 Ohms 2 x 1200 W into 8 Ohms bridged 1 x 2400 W Output Power (1kHz / THD = 1,0%) into 8 Ohms 2 x 850 W into 4 Ohms 2 x 1300 W into 8 Ohms bridged 1 x 2800 W Technical Specification Frequency Response 10 Hz - 30 kHz / 1dB Max. Output Level 91V / RMS before Cliping, reference 1 KHz / THD = 1% Vol

14、tage Gain 26 dB (constant gain option) reference 1kHz Input Sensitivity 0 dBu/0.775 V at rated output power 6 dBu/1.55 V reference 1 kHz Maximum Input Level 21 dBu / 9 V Input Impedance 20 kOhm active balanced THD 0.05% at rated output power MBW = 80 kHz, f = 1kHz IMD - SMPTE 0.01% 60 Hz, 7 kHz, typ

15、ical IMD - SMPTE 105 dB A-weighted, RMS to rated output level, Input sensitivity + 6dBu Crosstalk 300 internal, 1kHz DIM 30 0.01% DIM 100 40 V / ms Power Consumption 1650 VA 1/8 rated output power 4 Ohm Dimensions (WxHxD) 483x132.5 x 426mm 19 x 5.2 x 16.77 (in) Weight 29 kg (63.9 Ibs) Optional Input

16、 Transformer 90176 DESCRIPTION EV power amplifiers of the PRECISION SERIES meet the stringent requirements of tough touring applications. They are protec- ted against over-temperature, overload, shorted outputs, radio frequency interference and DC faults. The power transistors are protected from dam

17、age from reverse feeding of electrical energy by means of an additional special protective circuit. For the so-called soft-start, the power outputs are switched on delayed via relays. An inrush current limiter circuit prevents the mains fuses from being blown. Maximum precision is also guaranteed as

18、 regards mechanical construction and finish. The robust steel chassis features remarkab- le torsion resistance and is specially de- signed to cope with the tough wear and tear associated with going on tour. Thermal stability is guaranteed by several low noise 3-stage fans which also means that they

19、can be used inside the studio.Comparator cir- cuits constantly compare the power ampli- fiers input and output signal and control the limiters under non-linear operating conditi- ons. They protect the loudspeakers from overload due to power stage clipping. The PRECISION SERIES power amplifiers fea-

20、ture excellent transmission properties. The power amplifier topology also makes for extremely low distortion rates. Distortion fac- tor (THD), intermodulation distortion (SMPTE-IM) and transient intermodulation distortion (DIM 30 and DIM 100) are so low that they are only detectable with the most so

21、phisticated measuring equipment. Gene- rously dimensioned power supplies with low- leakage toroidal-core transformers provide considerable headroom well above the no- minal ratings. V/I foldback limiter circuits were deliberately not included in the PRE- CISION SERIES power amplifiers to facilita- t

22、e operation at complex loads up to a phase angle of +/- 90.The inputs are electronically balanced on XLR connectors. (Isolation transformers can be retrofitted). Direct Outs in the form of XLR connectors (male), to loop the signal through, are also standard featu- res. Architects and engineers speci

23、fications P 3000 STEREO POWER AMPLIFIER PRECISION SERIES RadioFans.CN 收音机爱 好者资料库 The modes DUAL/Stereo or PARAL- LEL/Mono can be selected via the Input Routing Switch. Furthermore, the PRECISI- ON SERIES power amplifiers can also be operated in “Mono Bridged” mode. The front panel accommodates the d

24、B-calibrated input Gain controls which are designed as espe- cially precise and safe-to-operate detented potentiometers. The LED display provides information about the power amplifers ope- rating status. For the two channels, they demonstrate readiness to operate, whether there is a signal at the in

25、put or output, when the Limiters have been activated and whether one of the protective features has been triggered. The power outputs Channel A, Channel B and Bridged Out are available on Speakon connectors. The rear side of the unit accommodates the ON/OFF switches for the integrated Hi and Lo cut

26、filters, a groundlift switch which separates the housing from the circuit ground thus helping to prevent hum loops and the operating modes selector to mono bridged operation. They also feature extremely quiet fans with front-to-rear airflow, facilitating operation in large and narrow amplifier racks

27、. # SERVICE INFORMATION WARNING: No user serviceable parts inside. Extremely hazardous voltages and currents may be encountered within the chassis. The servicing information contained within this document is only for use by Electro-Voice Authorized warranty repair stations and qua- lified service pe

28、rsonnel. To avoid electric shock DO NOT perform any servicing other than that contained in the Operating instruc- tions unless you are qualified to do so. Otherwise, refer all servicing to qualified service personnel. NOTICE: Modification to Electro-Voice pro- ducts is not recommended. Such modifica

29、ti- ons shall be at the sole expense of the person(s) or company responsible, and any damage resulting therefrom shall not be co- vered under warranty or otherwise. #.1 ELECTRO-VOICE UNIFORM LIMITED WARRANTY STATEMENT Electro-Voice products are guaranteed against malfunction due to defects in materi

30、- als or workmanship for a specified period, as noted in the individual product-line state- ment(s) below, or in the individual product data sheet or owners manual, beginning with the date of original purchase. If such malfunc- tion occurs during the specified period, the product will be repaired or

31、 replaced (at our option) without charge. The product will be returned to the customer prepaid. Exclusions and Limitations: The Limited Warranty does not apply to: (a) exterior finish or appearance; (b) certain specific items described in the individual product-line statement(s) below, or in the ind

32、ividual product data sheet or owners manual; (c) malfunction resulting from use or operation of the product other than as speci- fied in the product data sheet or owners manual; (d) malfunction resulting from mi- suse or abuse of the product; or (e) malfunc- tion occurring at any time after repairs

33、have been made to the product by anyone other than Electro-Voice or any of its authorized service representatives. Obtaining Warranty Service: To obtain warranty service, a custo- mer must deliver the product, prepaid, to Electro-Voice or any of its authorized service representatives together with p

34、roof of purchase of the product in the form of a bill of sale or receipted invoice. A list of authori- zed service representatives is available from MARK IV AUDIO Deutschland Hirschberger Ring 45 D - 94315 Straubing Postfach 0254 D- 94302 Straubing Tel.: +49 (0)9421/7060 Fax: +94(0)9421/706265 MARK

35、IV AUDIO (Europe) AG Keltenstr. 5 CH-2563 Ipsach Tel.: +41 (0)32-516833 Fax: +41 (0)32-511221. Incidental and Consequential Damages Excluded: product repair or replacement and return to the customer are only reme- dies provided to the customer. Electro-Voi- ce shall not be liable for any incidental

36、or consequential damages including, without limitation, injury to persons or property or loss of use. Some states do not allow the exclusion or limitation of incidental or con- sequential damages so the above limitati- on or exclusion may not apply to you. Other Rights: This warranty gives you spe-

37、cific legal rights, and you may also have other rights which vary from state to state. Electro-Voice Electronics are guaranteed against malfunction due to defects in materi- als or workmanship for a period of three (3) years from the date of original purchase. Additional details are included in the

38、Unifom Limited Warranty statement. #. 2 TECHNICAL ASSISTANCE For applications assistance or other technical information, contact the Applications Engi- neer. You can call or write: MARK IV AUDIO Deutschland Hirschberger Ring 45 D - 94315 Straubing Postfach 0254 D- 94302 Straubing Tel.: +49 (0)9421-7

39、060 Fax: +49 (0)9421-706265 MARK IV AUDIO (Europe) AG Keltenstr. 5 CH-2563 Ipsach Switzerland Tel.: +41 (0)32-516833 Fax: +41 (0)32-511221 Specifications subject to change without notice DIMENSIONS BLOCK DIAGRAM 1 SPECIFICATIONS: P3000 entire unit Measuring StandardIEC 268 part 3IHF-A 0 dBu = 775 mV

40、 (RMS) A.POWER SUPPLY 1. voltage supplyAC 2. nominal supply voltage, depending on the model:120V/230V/240V 3. nominal mains frequency:50 - 60 Hz 4. nominal power consumption (2x1200W/4):4100 W 5. nominal power consumption (2x120W/4):1500 W 6. power consumption at 1/8 of the nominal power (150W/4):16

41、50 W 7. deviation range of the power supply:-10 % +10 % B.INPUT PROPERTIES level control fully open InputNominal input level (nominal source EMK) select jumper internally Nominal output power Nominal load impedance 0 dBu+6 dBu+26 dB Channel A/B+1 dBu+7 dBu+14 dBu750 W8 Channel A/B0 dBu+6 dBu+13 dBu1

42、200 W4 Channel A/B-2 dBu+4 dBu+11 dBu1500 W2 Channel BRIDGED0 dBu+6 dBu+13 dBu2400 W8 Channel BRIDGED-2 dBu+4 dBu+11 dBu3000 W4 Maximum input level: +21 dBu C.OUTPUT PROPERTIES nominal output power with THD = 0.1 %, 20 Hz 20 kHz, MBW = 80 kHz maximum output power at 1 kHz with THD = 1 %, MBW = 80 kH

43、z Output connectorNominal load impedance Nominal output power Dual Mode Maximum output power Dual Mode, THD=1 % Single channel output power)1 Nominal output voltage SPEAKER A/B8 750 W850 W950 W77.5 V SPEAKER A/B4 1200 W1300 W1700 W69.3 V SPEAKER A/B2 1500 W1800 W2000 W54.8 V SPEAKER BRIDGED8 2400 W2

44、600 W3400 W138.6 V )1 measured with Dynamic Headroom Test-Signal according to IHF-A: 1 kHz Burst, 20ms ON, 480 ms OFF D. Idling output voltage Output connectorSPEAKER A/BSPEAKER BRIDGED Max. idling voltage91 V (RMS)182 V (RMS) E. Stabilizing with nominal load impedance, Dual Mode, standard output vo

45、ltage 8 4 Stabilizing0.325 %0.686 % Stabilizing level0.028 dB0.059 dB 2 F.FREQUENCY RESPONSE -3 dB level drop, referenced to the level at the standard frequency of 1 kHz the power amplifiers border frequencies are at 13 Hz and 40 kHz respectively, referenced to -1 dB Amplification frequency response

46、 InputOutputf (u)f (o)Remarks INPUT A/BSPEAKER A/B10 Hz75 kHzHI-LO-CUT Off INPUT A/BSPEAKER A/B20 Hz35 kHzHI-LO-CUT On Distortion-limited transmission range (performance bandwidth) THD = 0.1 %, 1/2 nominal power at 4 ohms, MBW = 500 kHz InputOutputf (u)f (o)Remarks INPUT A/BSPEAKER A/B10 Hz48 kHzHI-

47、LO-CUT Off G.PHASE RESPONSE30 (20 Hz - 20 kHz, HI/LO-CUT off) H.INPUT IMPEDANCE20 k (20 Hz 20 kHz) I.AMPLITUDE NON-LINEARITY Amplitude non-linearityRemarks nominal overall distortion0.05 %MBW = 80 kHz, f = 1 kHz standard overall distortion0.02 %MBW = 80 kHz, f = 1 kHz IMD-SMPTE0.01 %60 Hz, 7 kHz DIM

48、 300.01 %3.15 kHz, 15 kHz DIM 1000.01 %3.15 kHz, 15 kHz J.CROSSTALK - at f = 1 kHzless than 300 at f = 100 Hz400 L.SLEW RATE - internal40 V/s M.NOISE INTERFERENCE - U(F) = external voltage un-weighted with B = 22 Hz 22 kHz, effective value (IEC 268-1) - U(G) = noise voltage, frequency-weighting filt

49、er according to CCIR-468-3, quasi peak weighted (IEC 268-1) - U(A) = interference voltage A-weighted, dB(A), effective value (IEC 268-1) - Signal-to-noise ratio referenced to a nominal output voltage of 69.3 V (1200W/4ohms) - HI/LO-CUT ON, GND LIFT = GROUNDED Interference output voltage S/N ratioEquivalent input interference voltage Equivalent input interference level Residual