ElectroVoice-DX38-sp-sm维修电路原理图.pdf

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1、 Dx 38 24 BIT DIGITAL SOUND SYSTEM PROCESSORSERVICE MANUAL RadioFans.CN 收音机爱 好者资料库WARRANTY (Limited)Electro-Voice products are guaranteed against malfunction due to defects in materials or workmanship for a specifiedperiod, as noted in the individual product-line statement(s) below, or in the indivi

2、dual product data sheet or ownersmanual, beginning with the date of original purchase. If such malfunction occurs during the specified period, theproduct will be repaired or replaced (at our option) without charge. The product will be returned to the customerprepaid.Exclusions and Limitations: The L

3、imited Warranty does not apply to: (a) exterior finish or appearance; (b) certainspecific items described in the individual product-line statement(s) below, or in the individual product data sheet orowners manual; (c) Malfunction resulting from use or operation of the product other than as specified

4、 in the productdata sheet or owners manual; (d): malfunction resulting from misuse or abuse of the product; or (e): malfunctionoccurring at any time after repairs have been made to the product by anyone other than Electro-Voice or any of itsauthorized service representatives.Obtaining Warranty Servi

5、ce: To obtain warranty service, a customer must deliver the product, prepaid, toElectro-Voice or any of its authorized service representatives together with proof of purchase of the product in theform of a bill of sale or receipted invoice. A list of authorized service representatives is available f

6、rom Electro-Voiceat 600 Cecil Street, Buchanan, MI 49107 (616-695-6831) and/or Electro-Voice West at 9130 Glenoaks Boulevard,Sun Valley, CA 91532 (213-875-1900).Incidental and Consequential Damages Excluded: Product repair or replacement and return to the customer arethe only remedies provided to th

7、e customer. Electro-Voice shall not be liable for any incidental or consequentialdamages including, without limitation, injury to persons or property or loss of use. Some states do not allow theexclusion or limitation of incidental or consequential damages so the above limitation or exclusion may no

8、t apply toyou. Other Rights: This warranty gives you specific legal rights, and you may have other rights which vary from stateto state.Electro-Voice Electronics are guaranteed against malfunction due to defects in materials or workmanship for aperiod of three (3) years from the date of original pur

9、chase. Additional details are included in the Uniform LimitedWarranty Statement.Specifications subject to change without notice.600 Cecil Street, Buchanan, Michigan 49107, Phone 616/695-6831, Fax: 616/695-1304 TELEX/EVI Audio Canada, 705 Progress Ave. Unit 46 Toronto, Onatario, M1H 2x1, Canada , Pho

10、ne: 800/881-1685, Fax: 877/522-2242TELEX Communications A.G., Keltenstrasse 11, CH-2563 IPSACH, Switzerland, Phone: 011-41/32-51-6833, Fax: 011-41/32-51-1221EVI Audio Deutschland GmbH, Hirschberger Ring 45, D-94315, Straubing, Germany, Phone: 011-49/9421-7060, Fax: 011-49/9421-706265EVI Audio France

11、 S.A., Parc de Courcerin-Allee Lech Walesa, Lognes, f-77185 Marne La Vallee, France, Phone: 011-33/1-6480-0090, Fax: 011-33/1-6006-5103EVI Audio Japan Ltd., 2-5-60 Izumi, Suginami-ku, Tokyo, Japan 168, Phone: 011-81/3-3325-7900, Fax: 011-81/3-3325-7789EVI Audio (Aust.) Pty., Unit 24, Block C, Slough

12、 Business Park, Slough Ave., Silverwater, N.S.W 2141, Australia, Phone 011-61/2-648-3455, Fax: 011-61/2-648-5585EVI Audio (Hong Kong) Limited, Unit E & F, 21 /F., Luk Hop Industrial Bldg., 8 Luk Hop St., San Po Kong, Kowloon, Hong Kong, Phone: 011-852/351-3628, Fax: 011 -852/351-3329RadioFans.CN 收音机

13、爱 好者资料库Table of Contents- Safety and Service Instructions- - Warranty- - Architects and engineers specifications- - Measuring data- - Bill of materials- - Service notes / infos / instructions- - Spare parts plan- - Circuit diagramsElectro-Voice600 Cecil Street,Buchanan,Michigan 49107Phone 616/695-68

14、31Fax 616/695-1304e-mail The lightning flash with arrowhead symbol, within an equi-lateral triangle is intended to alert the user to the presenceof uninsulated “dangerous voltage” within the productsenclosure that may be of sufficient magnitude to constitutea risk of electric shock to persons.The ex

15、clamation point within an equilateral triangle isintended to alert the user to the presence of importantoperating and maintance (servicing) instructions in theliterature accompanying the appliance.IMPORTANT SAFETY INSTRUCTIONS1. Read these instructions.2. Keep these instructions. 3. Heed all warning

16、s.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 such as radiators, heat registers, stoves, or other appa

17、ratus 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 beendamaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have

18、falleninto 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 blades and a third grounding prong.The wide blade or the thir

19、d prong are provided for your safety. When the provided plug does not fit into your outlet, consult anelectrican for replacement of the absolete outlet.1. Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed when servicing the appliance.2. Use of

20、a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be operated and is connected to the mains3. Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage.4. The minimum distance between parts carrying m

21、ains 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 breakers that are not connected to the mains (secondary parts) has to be

22、 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 permissiblewhen using original parts.6. Altering the circuitry without prior consent or advice is not legitimate.7. Any work security regulations

23、that are applicable at the location where the appliance is being serviced have to be strictlyobeyed. This applies also to any regulations about the work place itself.8. All instructions concerning the handling of MOS - circuits have to be observed.Note: SAFETY COMPONENT (HAS TO BE REPLACED WITH ORIG

24、INAL PART ONLY)IMPORTANT SERVICE INSTRUCTIONSCAUTION: These servicing instructions are for use by qualified personnel only. To reduce therisk of electric shock, do not perform any servicing other than that contained in the Operating Instructions unless you are qualified to do so. Refer all servicing

25、 to qualified service personnel.1-2BESCHREIBUNGMit 48 Bit Filteralgorithmen, 24 Bit AD/DA Wandlern und einem Dyna-mikbereich von 115 dB setzt der Dx 38 neue Mastbe fr digitaleLautsprecher Kontroller und Prozessoren. Der Dx 38 ist ein universelleinsetzbarer Digitaler Sound System Processor mit 2 Eing

26、ngen und4 Ausgngen, sowie zustzlich einer internen Summe der Eingnge 1und 2. Die Ausgnge knnen in einer Matrix auf einen beliebigenEingang oder die Eingangssumme geroutet werden. Es knnen Ste-reo bzw. Dual 2-Weg-Systeme oder 3-Weg+Direct und 4-Weg Syste-me, jeweils auch mit Mono Sub-Kanal, aber auch

27、 Fullrange Systemekonfiguriert werden. In allen Betriebsarten stehen Hoch- und Tiefpa-Filter fr die Frequen-zweichen-Funktionen zur Verfgung. Die Auswahl umfat Linkwitz-Riley, Butterworth und Bessel Filter mit whlbaren Flankensteilheitenvon 6, 12, 18 oder 24 dB/Okt. Eine groe Anzahl weiterer Filtere

28、rmglicht eine uerst flexible Frequenzgangskorrektur. In den Ein-gngen finden Sie jeweils einen 5-Band Equalizer, dessen einzelneFiltersektionen beliebig mit High- und Low-Pass, High- und Low-Shel-ving oder parametrischen Peak-Dip-Filtern belegt werden knnen. Inden Ausgngen sind neben den Frequenzwei

29、chen-Filtern jeweils 4weitere Filter enthalten, die ebenfalls als High- und Low-Pass Filter,High- oder Low-Shelving-Filter, parametrische Peak-Dip-Filter, oderAllpass-Filter programmiert werden knnen. Weitere Filtermglichkei-ten sind z. B. Hochpsse 2. Ordnung zur Realisierung von B-6 Align-ments, od

30、er spezielle LPN-Filter (Lowpass Notch / Tiefpa-Sperrfilter)zur Korrektur des Frequenz- und Phasengangs von Bareflexboxen.Zustzlich ist jeder Kanal mit einem Delay, einem Polarittswahlschal-ter, einem programmierbaren Pegelsteller und einem digitalen Kom-pressor / Limiter ausgestattet. In den Eingng

31、en befinden sichauerdem noch die Master-Delays. Der Anwender hat die Wahl zwischen zwei Bedien-Modi: Im einfach-sten Fall (No Edit Mode) brauchen nur die verwendeten Lautsprecher-kombinationen aus der Liste der Factory Preset Programme aus-gewhlt werden. Das Gert ist danach optimal auf die Audioanla

32、geeingestellt und sofort betriebsbereit. Im Full Edit Mode hingegenbesteht Zugriff auf smtliche Parameter, so da beliebige Einstellun-gen programmiert und gespeichert werden knnen. Es stehen insge-samt 80 Programmpltze - 50 fr die Factory Presets, und weitere 30fr frei programmierbare User-Programme

33、 - zur Verfgung.Die AD/DA-Wandlung im Dx 38 erfolgt mit linearen 24 Bit Wandlern,wobei es sich in der AD-Sektion um gainranging Sigma-Delta-Wandlermit 128-fachem Oversampling handelt. Im DA-Bereich wird mit Sigma-Delta Wandlern mit 128-fachem Oversampling gearbeitet. Die Signal-verarbeitung erfolgt

34、auf zwei 24 Bit Motorola Signalprozessoren.DESCRIPTIONProviding 48-bit filter algorithms, 24-bit AD/DA conversion and adynamic range of 115 dB, the Dx 38 sets new standards for digitalloudspeaker controllers and processors. The Dx 38 is an universalDigital Sound System Processor that provides 2 inpu

35、ts and 4 outputs;plus internal summing of the inputs 1 and 2. Via matrix it is possible toassign the outputs to any input or to the sum of the inputs. It is furtherpossible to establish the following configurations: Stereo or Dual2-Way systems, 3-Way + Direct and 4-Way systems, each with MonoSub-cha

36、nnel, but also full range systems. High and low-pass filters are provided for the frequency crossoverfunctions in all operation modes. The selection includes Linkwitz-Ri-ley, Butterworth and Bessel type filters with switchable slopes between6, 12, 18 and 24 dB/oct. A huge number of additional filter

37、s offersextremely flexible correction of the frequency response. Each inputincorporates a 5-band equalizer, allowing to assign high and low-pass,high and low-shelving or parametric peak-dip filters to its individualfilter sections. Next to the frequency crossover filters, four additionalfilters are

38、employed in each output channel, which also can be set towork as high or low-pass, high or low-shelving filters, parametricpeak-dip filters, or all-pass filters. Additional filtering is providedthrough 2. order high-passes for the realization of B-6 alignment, orspecial LPN-filters (Low-Pass Notch f

39、ilters) for correcting the frequen-cy and phase responses of optimally vented woofer cabinets. Eachchannel additionally provides a delay, a polarity switch, a program-mable level control and a digital compressor / limiter while the masterdelays are located in the input channels. The user can choose

40、between two operation modes: the “No EditMode” allows to simply select the required combination of loudspeakersystems from the factory preset program list. Afterwards, the applianceis optimally matched to the sound system and can be operatedinstantly. The “Full Edit Mode” on the other hand offers ac

41、cess to allparameters, allowing to freely program and store basically any setting.A total number of 80 memory addresses - 50 preset and 30 freelyassignable user-programs - are available. Technische InformationenArchitects and engineers specificationsDx 3824 BIT DIGITAL SOUND SYSTEM PROCESSORWeitere

42、Merkmale sind:- FLASH Speicher fr Software und Preset Updates ber serielle Schnittstellen- PC Bedien- und Konfigurationssoftware unter Windows 95 / Windows 98- MIDI-Schnittstelle standardig- RS-232, RS-485 Schnittstellen oder Umschaltkontakte optional- Grafik-Display mit 122 x 32 Dots, hintergrundbe

43、leuchtet- Ein- und Ausgnge elektronisch symmetrisch in XLR- Trafosymmetrierung fr die Eingnge optional- Input / Output Pegelsteller, Output Mute Schalter, Kanal-Funktionsanzeigen SUB, LO, MID, HI- Input / Output Aussteueranzeigen, Kompressor- und Clip-LEDs Within the Dx 38, AD/DA conversion is taken

44、 care of by linear 24-bitconverters; where the AD-section employs 128 times oversampling,gain-ranging Sigma-Delta converters. The DA-section offers 128 timesoversampling Sigma-Delta converters. The overall signal processingis performed by two 24-bit Motorola signal processors.DESCRIPTIONAvec ses alg

45、orithmes de filtrage travaillant en 48 bits, ses convert-isseurs A/N et N/A 24 bits et sa gamme dynamique de 115 dB, le Dx38 dfinit de nouveaux standards dans le domaine des contrleurs etprocesseurs numriques de haut-parleurs. Le Dx 38 est un processeurnumrique de diffusion universel ; il est pourvu

46、 de 2 entres et 4 sorties,un circuit interne permettant de sommer les entres 1 et 2. Une matricepermet dassigner les sous-bandes du signal dentre stro (ousomm en mono) nimporte quelle(s) sortie(s). Dorigine, les confi-gurations suivantes sont disponibles : systmes stro 2 voies, mono2 voies, 3 voies

47、+ sortie directe, ou systme mono 4 voies, tous offrantventuellement une sortie mono pour canal Subwoofer et une sortie“large bande”. Dans tous les modes de fonctionnement, ce sont des filtres passe-hautet passe-bas qui se chargent de rpartir le spectre audio en plusieursbandes de frquences (crossove

48、r). Ces filtres peuvent tre de typeLinkwitz-Riley, Butterworth ou Bessel, avec des pentes commutablesentre 6, 12, 18 et 24 dB/octave. De nombreux autres correcteurspermettent de modeler la courbe de rponse votre guise : chaqueentre possde par ailleurs cinq correcteurs, pouvant tre un filtrepasse-hau

49、t ou passe-bas, un correcteur daigus ou de graves de typeShelve (en plateau), ou un filtre paramtrique. Une fois le signaldorigine rparti en plusieurs bandes, quatre autres correcteurs peu-vent prendre place sur chaque canal de sortie : eux aussi peuventtravailler en modes passe-haut ou passe-bas, c

50、orrecteur daigus oude graves de type Shelve (en plateau), filtre paramtrique, voire filtrepasse-tout. Des fonctions de filtrage supplmentaires sont encoreprvues, sous la forme de filtres passe-haut du second ordre permet-tant la ralisation dalignements de type B-6, ou des filtres spciauxde type LPN