Electro-Voice DMC-85 User's Manual
Contents
1. oye 14 Controller NSA sn RNS 15 T 15 TL 16 5 16 O A ENL TIA a 16 16 213 MEAN NE BRANN trien vtt e EAM Kk RN a a 16 FUSS aap 17 SCHEMATICS te Se or C E PR PE Rt eo Coens TER ef 19 SERVICE WARRANTY INFORMATION Shipping DamagbB uu uu uu a RSG usa SRA 26 FOSON or A EN A cA SUPER ya pr 26 Controller Power ONG tiene riter eame oe estt crasse teste ea 26 VALETE ATH NON COUTE TAROT CO S HEC EE I DEA A 26 DE MR RU RR EORR AA 2 S i s ss 27 VIBW OLEO AA 29 SEO 30 WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE THE DELTAMAX SYSTEM Description DESCRIPTION GENERAL The DeltaMax DMC 1122X DMS 1 122 85 sys tem consists of a two way biamped high perfor mance speaker system and a companion electronic controller The DMS 1122 85 is a full range loudspeaker system intended for high level sound reinforcement in touring sound and perma nent installation applications The trapezoidal cabinet shape allows tight cluster designs en abling maximum mutual coupling and single point source arrays The unique circuitry of2. x uanrAAAawa aw page 29 Parts List R86 47 03 027328 RES 806 OHM 1 25W MF AX R207 R230 R241 47 03 027330 RES 28 7 1 25W MF AX R264 47 03 027373 RES 59 0 KHM 1 25W MF AX 8121 R157 R228 R239 47 03 028178 RES 24 3 1 25W MF AX R188 47 03 028212 RES 8 45 1 25W MF R231 47 03 028207 RES 143 1 25W MF 8120 47 03 028233 5 62 1 25W MF 8167 47 03 028234 RES 7 5 1 25W MF R12 R116 A139 176 R178 R179 R191 R196 R201 R217 47 03 028238 RES 15 1 25W R55 R125 142 R159 R164 47 03 028240 RES 51 1 KHM 1 25W R42 R43 R44 R45 R140 47 03 028243 RES 22 1 KHM 1 25W MF 8134 47 03 028244 RES 56 2 1 25W 8194 47 03 028245 RES 68 1 1 25W MF R226 47 03 124667 RES 8 66 KHM 1 25 R211 47 03 028255 RES 14 1 25W MF 8126 8150 47 03 028269 110 KHM 1 25W 967 R163 213 47 03 028695 RES5 11 1 25W MF AX R218 47 03 028827 RES 7 87 1 25W MF AX R240 47 03 028859 47 5 1 25W MF AX R90 175 47 03 037660 RES 3 32 1 MF AX R74 R108 47 03 037770 RES 100 OHM 1 25W MF AX 8149 8158 47 03 038077 RES 3 57 MHM 1 25W MF AX R88 47 03 038216 RES 182 1 25W MF AX R66 R73 R115 118 131 132 47 03 038217 RES 475 1 25W MF AX R71 R79 47 03 038218 RES 536 1 25W MF AX R144 47 03 038219 RES 2 67 1 2
3. DMC 1122X DMS 1122 85 Beamwidth vs Frequency Whole Space anechoic FIGURE 5 DMC 1122X DMS 1122 85 Directivity Factor and Directivity Index vs Frequency Whole Space anechoic AoE AN ith SA T M MIL TI TTT TT LENT suuumzuuu HF FIGURE 6 DMC 1122X DMS 1122 85 Harmonic Distortion 115 dB SPL 1 meter using typical music frequency spectrum FIGURE 7 DMS 1122 85 Impedance The impedance of each frequency band of the system was measured in an anechoic environment page 5 THE DELTAMAX SYSTEM Block Diagram FUNCTIONAL BLOCK DIAGRAM ske f aK EI 9 THE DELTAMAX SYSTEM star Operation zm PICTORIAL 1 DMC 1122X Front Panel Diagram OPERATION FRONT PANEL INDICATORS AND CONTROLS REFER TO PICTORIAL 1 1 INPUT LEVEL INDICATORS Three LEDs show the drive level at the input of the controller Levels are calibrated in dBu 20 0 16 NOTE Do not allow the 16 dB input level indicator to stay on continuously If the 16 dB indicator is allowed to stay on for long periods the input circuit will clip The input signal should be reduced until the 16 dB indicator lights only on loud instantaneous peaks 2 GAIN REDUCTION INDICATORS Three LEDs show how much gain reduction is occur ring in the compressor at the input of the con troller The display is calibrated in relative dB 3 6 12 Gain reduction occu
4. 6MM D1 D13 D16 TO D18 D21 D29 TO D36 D38 TO D42 D44 TO D47 D49 TO D56 D58 D60 D62 TO D67 D69 TO D74 48 01 027340 DIO SIGNAL 1N4447 D27 D48 D57 D59 48 01 028163 DIO ZENER 6 2 1N5234 D61 D68 48 01 028891 DIO ZENER 15V IN4744 037 043 48 01 028896 DIO ZENER 3 9V IN4730A 026 028 48 01 037486 DIO ZENER 7 5 1 1447370 014 015 019 020 022 023 024 025 48 01 051327 DIODE 1N4148 1 51 02 028058 SW PUSH VERT 4PDT 104 S
5. 9 Interconnections for Single Channel Operation page 17 Figure THE DELTAMAX SYSTEM GAIN CONTROL BUS OUTPUTS se amp LE SENSE LINES OUTPUT LEFT RIGHT O AMPLIFIER bros LEFT RIGHT INPUT INPUT RIGHT LF LEFT RIGHT OO OO POWER e INPUT INPUT FIGURE 10 Interconnection for Stereo Operation page 18 THE DELTAMAX SYSTEM Schematic MAIN BOARD E E E MU Ee prs a E eme mr tog i 21 06 051269 22 9 1182 J 1 g afuit W BG d te ores sa ic 88 Bas 5338 2 page 19 Schematic THE DELTAMAX SYSTEM SCHEMATIC 1122 Page 1 of 6 THE DELTAMAX SYSTEM Schematic SCHEMATIC DMC 1122X Page 2 of 6 O lt LOW OUTPUT a i mur page 21 Schematic THE DELTAMAX SYSTEM SCHEMATIC DMC 1122X Page 3 of 6 Resistors marked 5 Resistors not marked 1 page 22 THE DELTAMAX SYSTEM Schematic SCHEMATIC DMC 1122X Page 4 of 6 page 23 Schematic THE DELTAMAX SYSTEM SCHEMATIC 1122 Page 5 of 6 Resistors not marked 1 Resistors marked 5 8 24 Schematic THE DELTAMAX SYSTEM SCHEMATIC 1122 Page 6 of 6 DMC 25 THE
6. DELTAMAX SYSTEM Schematic SCHEMATIC DMC 1122X er w gL A et Saov1d 8 SAND 106 26 THE DELTAMAX SYSTEM Assembly View of P C Board POWER SUPPLY P C BOARD 4 6 7 C6 C1 RS S n gt oa d Wie GRY E page 27 Service Warranty SERVICE WARRANTY INFORMATION SHIPPING DAMAGE Inspect the shipping carton for possible damage If damage is found notify the transportation company immediately Save the carton as evidence for the carrier to inspect If damage occurs during shipping it is the responsibility of the consignee to file a claim with the carrier If the carton is in good condition but the unit is damaged call Electro Voice Included in the box with the DeltaMax Controller is a power cord warranty card two operating voltage labels o amp fuse for 220 240 V and this manual FIELD SERVICE Controller Power Inspection If the DMC power indicator does not light 1 Checkthe power switch 2 Checkthe line cord 3 Checkthe fuse 4 Check the mains voltage and DMC operating voltage configuration page 28 THE DELTAMAX SYSTEM WARRANTY Limited Electro Voice products are guaranteed against mal function due to defects in materials or workmanship for a specified period as noted in the individual prod uct line statement s below or in the individua
7. When left in the Cal Clip position the Amplifier Output Limiter indicators on the front panel of the controller will indicate when the amplifier is self limiting or clipping C If two or more speakers are connected parallel to an amplifier output most amplifiers will exhibit a drop in clipping voltage due to the lower load impedance This will require that the Amplifier Calibration trimpot be set to a value slightly lower than the value obtained in the no load calibration test Note that the result of this is that even when multiple speakers are paralleled on an amplifier channel the Amplifier Calibration trimpot will always end up pointing at the maximum amount of power on the calibrated markings on the front panel that the amplifier is capable of delivering to each individual driver no matter how many drivers are connected in parallel THE DELTAMAX SYSTEM D Donotchange the amplifier gain or recalibration will be necessary Use the LF and HF Output Level controls on the controller to change power amplifier drive levels The Output Level controls do not affect controller calibration INSTALLATION AMPLIFIER REQUIREMENTS Professional power amplifiers with the following ratings are recommended for use with the DMC 1122X DMS 1 122 85 system LF 300 600 watts continuous into eight ohms HF 125 250 watts continuous into eight ohms The use of amplifiers with lower power ratings is ac ceptable however th
8. connection is recommended as a starting point The interconnecting cables of line level equipment such as the DeltaMax controller should have the shields connected at one point only usually the re ceiving end of the signal transmission See Figure 9 Never lift the third wire safety ground of the ac power cable It protects against possible shock hazard When deciding how to best ground the controller in a particular system note that the controller s input and output XLR type connectors have pin 1 referenced to chassis ground through a 20 k resistor and a 01 capacitor This minimizes the possibility of a page 16 THE DELTAMAX SYSTEM ground loop Circuit ground ties to the chassis ground internally at one point The input to the con troller is active differential and the output is trans former isolated Ventilation Adequate ventilation should be provided in the rack to maintain a reasonable operating temperature The ambient temperature inside the rack cabinet should not exceed 60 140 F under any condi tions Security A security cover and attachment screws are sup plied to protect the control settings against uninvited adjustments Maintenance Use a soft damp cloth to clean the unit No other maintenance is required THE DELTAMAX SYSTEM Figures FIGURE 8 DeltaMax Output Connection SENSE INPUTS J DMC 1122X O O oo POWER AMPLIFIER TO 0 8 1122 85 LF FIGURE
9. engaged 8 POWER INDICATOR This LED lights when the controller is on 9 POWER SWITCH This switch turns the con troller on and off BACK PANEL CONNECTIONS refer to pictorial 2 1 AC POWER CORD RECEPTACLE This re ceptacle is for the ac power cord supplied with the unit 2 FUSE RECEPTACLE This fuse receptacle requires either a 0 25 A 250 V slow blow fuse for 100 120 V ac operation 0 1 250 V slow blow fuse for 220 240 V ac operation 3 SENSE INPUTS A LF This input is for the connection of the sense line to monitor the power delivered to the woofer and should be connected to the output of the low frequency amplifier B HF This input is for the connection of the sense line to monitor the power delivered to the compression driver and should be connected to the output of the high frequency amplifier NOTE The Sense Inputs are floating differen tial with 5 way binding posts see CONNEC TOR and CABLE REQUIREMENTS section for detailed wiring information 4 OUTPUTS A LF This input is the low frequency output of the DMC crossover controller and should be connected to the input of the low frequency amplifier PICTORIAL 2 DMC 1122X Back Panel Diagram THE DELTAMAX SYSTEM OPERATION continued B HF This connection is the high frequency output of the DMC crossover controller and should be connected to the input of the high frequency amplifier 5 GAIN CONTROL BUS This
10. lt inch jack is for slaving the gain control busses of other DMC controllers to enable gain tracking ina multiple controller system See CONNEC TOR and CABLE REQUIREMENTS section for detailed wiring information 6 INPUT This connection is for the full range signal input to the DMC controller This input is electronically balanced with a female 3 pin XLR type connector with pin 1 as a ground reference pin 2 high and pin 3 low See CONNEC TOR and CABLE REQUIREMENTS section for detailed wiring information TYPICAL SYSTEM OPERATION The DMS 1122 85 is a full range biamped loud speaker system to be used with the DMC 1122X electronic controller Besides conventional fre quency division the DMC electronic controllers have equalization and time delay to obtain optimum per formance from their respective DeltaMax DMS loudspeaker systems In addition sense lines to the controllers monitor the voltage drive to each loud speaker in the system and automatically activate protection circuitry to prevent cone diaphragm over excursion voice coil overheating and amplifier clip ping Before operating a DeltaMax system the user should read this manual thoroughly and make sure that the system has been set up as detailed in the INSTALLATION section and the amplifiers and controller have been calibrated as detailed in the AMPLIFIER CONTROLLER CALIBRATION section The gain and equalization structures in the DMC controllers have b
11. referenced ground pin 2 high and pin 3 low The outputs are electronically bal anced and have male connectors with pin assign ments identical to the input Figure 8 illustrates the preferred interconnection between the controller and the power amplifier When driving unbalanced lines pin 3 should be shorted to ground page 12 THE DELTAMAX SYSTEM INSTALLATION continued To hook up the DeltaMax controller to the power amplifiers connect the LF Output of the controller to the input of the low frequency amplifier and the HF Output of the controller to the input of the high fre quency amplifier The outputs of the low and high frequency amplifiers are then connected to the LF input woofer and HF input compression driver re spectively of the DMS 1122 85 speaker system See the LOUDSPEAKER CONNECTIONS section for details of the loudspeaker wiring See Figures 9 and 10 for two typical system configurations Sense lines must be connected to the DeltaMax controller so that the power levels being delivered to the woofer and compression driver can be moni tored This is accomplished by connecting the out put of the low frequency amplifier to the LF Sense Input on the controller and the output of the high fre quency amplifier to the HF Sense Input on the con troller The sense input connectors are 5 way binding posts wired in a floating differential configura tion This configuration makes it possible to conn
12. the DMC controller provides accurate protection for the loudspeakers without the use of shifting high pass or low pass filters shifting crossover frequencies or independent band pass compression The elec tronic protection is invoked only when catastrophic conditions are present for the loudspeakers The result is that accurate frequency response is main tained from the lowest sound pressure levels to the very highest sound pressure levels available from the loudspeakers There are two models in the DMS 1122 85 series the DMS 1122 85AP painted finish and the DMS 1122 85 APF painted finish with flying hard ware The DMS 1122 85 utilizes a 12 inch woofer and a 1 inch exit modified DH2T high frequency driver The system uses flat front constant directivity high frequency horns which are based on the Electro Voice HP series Patent 4 685 532 and are geometrically optimized for performance from 1 250 to 20 000 Hz The DeltaMax flying version model DMS 1122 85 APF includes two lengths of aircraft type L track rigging hardware on the top and bottom of the en closures to facilitate the hanging of multi cabinet arrays Each DeltaMax flying system is packed with a separate owner s manual which provides specific hanging instructions The electronic circuits are designed to provide optimum audio performance even when the audio drive level is increased for maximum loudness Precise speaker modeling circuits control a high p
13. top cover There are two screws on each side two screws on the rear and one screw in the front panel center top 3 Locate the eight voltage select solder cups near the power transformer Referring to Table 1 reconnect the leads corresponding to the de sired primary voltage 100 VAC PRIMARY WIRING Installation 4 Install the correct line fuse See values in Table 5 Plug the power cord into an ac outlet and turn the controller on Measure the voltage at the points shown in the PCB diagram The mea sured voltage should be 22 volts If the mea sured voltage is not within 10 of this value turn the unit off and check the connections in step 3 6 Reinstall the top cover with the seven screws Line Fuse MDL Series Slo Blo 0 25 250 V 0 25 A 250 V 0 10 250 V 0 10 250 TABLE Main Fuse Selection Guide Line Voltage 220 VAC PRIMARY WIRING TABLE 1 Primary Power Conversion Chart for 100 120 220 and 240 V 50 60 Hz Operation page 15 installation INSTALLATION continued Mounting The unit is one rack space high 13 4 and fits a standard EIA 19 inch rack To make wiring easier mount the controller near the power amplifier s Grounding A widely accepted grounding technique for audio systems is the star connection single point ground The final configuration will be determined by the size of the system and the equipment used in the system However the star
14. 15 01 028703 4 7UF 63V ELEC AL RAD 2 A12 84 C87 15 01 028850 1 MF 35V ELEC AL RAD 15 16 24 17 01 124461 52 079 15 01 028851 CAP 2 2 MF 35V ELEC AL RAD 18 23 17 01 124688 Ci 03 025 028 15 01 051325 220UF 25V ALUMINUM J5 21 01 028470 RAD LEAD 21 01 028908 C22 C34 C41 C49 685 120 124 15 01 122935 10UF 20 35V ALUMINUM JP1 JP2 JP3 R221 C71 15 02 026831 CAP 220PF 10 50V CER DISK R235 21 01 110310 C2 C4 0135 C136 15 02 027325 CAP 150PF 5 100V CERAMIC J2 21 01 124470 28 143 144 15 02 027455 100PF 10 50V CERAMIC 6104 C107 0130 43 44 21 01 124642 0132 0133014 15 02 051318 CAP 001UF 100V 750 CERAMIC C5 C8 C11 C19 C36 D83 39 01 028846 C43 C48 C53 15 02 051435 330PF 5 50V 075 39 01 028893 POLYPROPYLENE 076 077 078 079 C6 C7 C14 TO C17 C20 C21 C37 080 081 082 084 C38 C46 C47 C50 C51 C55 C56 D85 D86 39 01 028894 C58 C59 C60 C61 C72 C73 C77 R141 47 01 028860 C78 C82 C86 C89 C90 C91 C93 R133 47 01 028862 C94 C95 C96 C97 C98 C99 C100 R114 8152 47 01 028863 C102 C103 C105 C108 C109 C110 R243 47 01 102075 C111 C112 C122 C123 C125 0126 0128 0122 15 02 100307 C42 15 06 026823 C13 033 C39 C57 15 06 027320 C54 15 06 027322 C142 15 06 027367 C114 C119 137 15 06 028020 C12 C18 C23 C35 063 067 068 C83 15 06 028065 CAP 01UF 80 100V Z5U CER CAP 001 5 50V MYLAR
15. 49107 616 695 6831 or 800 234 6831 Specifications subject to change without notice THE DELTAMAX SYSTEM DMC 1122X REPAIR PARTS LIST Power Supply Board Assembly 27 01 038256 C1 C5 C6 1501 124502 Capacitor 10uf 50 volt 045 C101 15 06 028853 aluminum electroylitic Radial 6113 15 06 037470 Lead 075 C127 C131 15 06 037649 C3 C4 15 01 124505 Capacitor 1000 50 volts 629 C30 C32 C69 aluminum electroylitic Radial 80 C88 C92 C117 15 06 037651 Lead C40 C134 15 06 037652 C2 15 02 026884 Capacitor 0 010 250 volt 027 C44 C70 C76 ceramic UL approved C81 C115 C116 15 06 037653 01 17 01 121660 1 voltage regulator 15V C31 C118 15 06 037655 LM7815 C24 15 06 038211 U2 17 01 121659 1 voltage regulator 15V C74 C106 15 06 038212 LM7915 C62 15 06 038214 17 01 119087 1 voltage regulator 5V C138 15 06 051319 LM7805 C140 15 06 051326 48 02 037580 Bridge Rectifier 1 5 amp pc C139 15 06 051513 mount C121 15 06 051514 2 5 48 02 042787 Diode 1N4004 400V 19 20 28 A29 17 01 028867 CR4 39 01 124973 LED green A13 17 01 028905 Fi 51 04 124634 Fuse 175mA 250V slow blow Ti 56 08 025906 Transformer power pc mount A14 17 01 028906 DMC 1122X Main Board Assembly 21 17 01 028907 C64 C66 15 01 027317 1000MFD 35V ELEC AL A1 M A5 AB A9 A10 RAD A11 A17 A22 AD5 C9 C10 15 01 027327 47MFD 20 25V ELEC 26 A27 17 01 122832 C65
16. 5W MF AX R275 47 03 038220 RES 750 OHM 1 25W MF AX R50 47 03 038221 RES 221 OHM 1 25W MF AX R251 47 03 038222 RES 75 OHM 1 25W MF AX R96 R117 47 03 038223 RES 432 KHM 1 25W MF AX R242 R246 47 03 051335 RES 2 94 1 1 4W MF AX R5 R14 62 R64 47 03 051434 RES 56 2 OHM 1 1 4W MF 8160 47 03 051447 RES 332 1 1 4W MF AX R72 47 03 051448 RES 392 1 1 4W MF AX R245 47 03 051462 RES 5 36 1 1 4W MF AX 7878 47 03 05146399 5 49 1 MFAX R17 R19 841 851 109 R145 R154 47 03 109434 RES 20 1 25W MF AX R2 R7 R8 R15 R22 R24 R26 R27 R29 R30 R32 R47 R53 R58 R59 8100 R103 R104 106 R107 R112 R129 R136 R162 R170 R174 R181 R185 R189 R192 R193 R198 R199 R200 R210 R212 R214 R216 R227 R232 R233 R236 47 03 109437 RES 10 KHM 1 25W MF AX R223 R249 47 03 119012 RES 2 KHM 1 25W MF AX R229 47 03 119021 RES 7 68 1 25W MF AX R77 83 R177 47 03 119034 RES 61 9 KHM 1 25W MF AX R9 R16 R124 R128 R137 R38 R147 R156 R172 R173 R209 47 03 119305 100 KHM 1 25W MF AX THE DELTAMAX SYSTEM R166 47 03 121444 RES 2 74 KHM 1 25W MF AX R3 R4 R21 R23 R155 R161 R182 R184 R202 R248 47 03 121532 RES 1 KHM 1 25W MF AX R244 47 03 121651 RES 14 7 1 25W MF AX R80 R113 R122 R153 47 03 121737 RES 10 7 KHM 1 25W MF AX R37 R46 47 03 122803 RES 10 OHM 1 25W M
17. ATION see Figure 1 100 kilohms each side to ground LF EQ Connector 3 dB at 40 Hz 11 dB at 84 Hz Two five way binding posts LF Signal Delay OUTPUTS LF and HF 0 03 ms at crossover frequency Type HF EQ Electronically balanced differential 4th order optimized forDMS 1122 85 series Maximum Level driver and horn 18 dBu TOTAL HARMONIC DISTORTION 20 20 000 Hz Minimum Load Impedance for Full Level 0 03 typical 0 1 maximum ee cimi NOISE EACH OUTPUT 20 20 000 Hz NBW Male 3 pin XLR type TYPICAL POWER REQUIREMENTS 86 dBu 100 120 220 240 V 50 60 Hz 13 W SIGNAL INPUT CHASSIS CONSTRUCTION Type f Painted steel Electronically balanced differential COLORS Maximum Level 5 18 Gray panel black chassis with white graphics Impedance MOUNTING 27 000 ohms and 0015pf EIA 19 inch rack mount 1 75 in high 8 97 in CMRR Typical behind panel including connectors supplied with front panel security cover for controls 55 dB SYSTEM SPECIFICATIONS Frequency Response measured in far field Beamwidth angle included by 6 dB down points calculated to one meter on axis swept sine on polar responses indicated one third octave wave one watt into LF section 2 83 V at 250 Hz bands of pink noise anechoic environment see Figure 1 see Figures 3 and 4 60 16 000 Hz Horizontal 1 200 16 000
18. F AX R69 R70 R206 R219 47 03 122861 RES 35 7 KHM 1 25W MF AX R186 47 03 123010 RES 13 1 25W MF AX 8171 47 03 123011 RES 200 1 25W AX R253 47 03 123016 RES 130 KHM 1 25W MF AX R10 R34 R35 R48 8102 R119 R190 R197 R250 R258 47 03 124615 RES 30 1 KHM 1 25W MF AX 151 47 03 124632 RES 162 1 25W MF AX R57 R204 47 03 124654 RES 8 87 1 25W MF AX 854 R105 47 03 124655 RES 11 3 1 25W MF AX R6 R13 R20 R25 R28 R33 R36 R38 R63 R68 R76 R82 R87 R95 R97 R101 R110 R148 R222 R237 R254 R256 47 03 124672 RES 4 75 1 25W MF AX R135 41 03 124673 RES 6 19 1 25W MF AX R220 41 03 124677 RES 2 43 1 25W MF AX R40 R180 47 03 124678 RES 3 01 1 25W MF AX R56 R169 47 03 124685 RES 12 1 KHM 1 25W MF AX R267 47 03 124695 RES 49 9 KHM 1 25W MF AX R31 R94 47 03 124696 RES 4 99 1 25W MF AX R75 R81 R85 47 03 124697 RES 3 24 1 25W MF AX 893 R123 47 03 124699 RES 1 15 KHM 1 25W MF AX R225 47 03 124726 RES 5 90 KHM 1 25W MF AX R39 R130 R168 R252 47 03 124838 RES 3 92 KHM 1 25W MF AX R143 47 03 124957 RES 2 21 KHM 1 25W MF AX R268 R270 47 06 027344 POT 16MM VERT BSOKHM K86 CC R1 R52 R183 47 06 027459 POT 5 KHM TRIM R272 R273 R274 47 06 028556 POT 50 KHM 20 16MM VERT R127 47 06 028818 POT 50K 10V PCB HORZ TRIM R49 R111 R146 R165 47 06 028910 POT TRIM 100K
19. FILM CAP 0015MFD 5 50V MYLAR CAP 01MFD 5 50V MYLAR 047MF 5 50V MYLAR CAP 022 MF 10 50V MYLAR CAP 01 MF 2 50V POLY R260 R261 R262 R263 R276 R277 R278 R280 R281 R282 R283 R265 R266 R269 R271 R195 R215 R234 R238 R247 R255 R257 R259 R78 R91 R187 R203 R208 R60 R205 47 01 102078 47 01 102111 47 01 102127 47 01 109204 47 03 026839 47 03 026891 47 03 027309 Parts List CAP 0068 MF 10 SOV MYLAR CAP 330PF 400VDC CAP 001 MF 2 100 V POLY CAP 047MF 2 100V POLY CAP 0015MF 2 100 V POLY CAP 2 100V POLY CAP 0082MF 2 100V POLY CAP 33UF 2 100V POLY CAP 0018UF 2 QPPV POLY CAP 012UF 2 100V POLY 00056MF 2 CAP O68UF 2 P CAP 0001UF 50V 5 POLY CAP 00027UF 50V 5 POLY IC LM339 QUAD COMPARATOR IC VOLTAGE CONTROLLED AMP IC CA3046 XSTR ARRAY IC NES517N O T A 1 5532A DUAL OP AMP 4NV IC TLO74CN QUAD IC TLO72CP DUAL OP AMP HDR 045 SQ PST 6 PIN CONN 1 4 PHO JCK RGT ANGLE JMPR CIRCUIT CONN XLR FEM RTANG PCHT GND CONN XLR MALE RTANG RCMT LED 3 9V ROUND GREEN LED 2 0V ROUND RED LED 2 0V ROUND YELLOW RES 51 5 25W CF AX RES 2 MHM 5 25W CF AX RES 3 MHM 5 25W CF AX RES 750 OHM 5 25W CF AX RES 1 5 25W CF AX RES 24 5 25W CF AX RES 100 5 25W CF AX RES470 5 25W CFAX RES 243 1 25W MF AX RES 75 1 25W MF RES 48 7 1 25W MF
20. Hz Crossover Frequency BO 15 302 1 480 Hz Vertical 1 200 16 000 Hz Efficiency LF HF 55 70 20 4 8 25 Directivity Factor 1 200 16 000 Hz Average Maximum Long Term Average Power see Figure 5 Handling Capacity per ANSI EIA RS 426A 12 3 4 0 6 0 1980 LF HF Directivity Index D 1 200 16 000 Hz Average 300 60 watts see Figure 5 Maximum Long Term Average Midband Acoustic Output LF HF 14 15 acoustic watts Sensitivity SPL at one meter indicated input 10 9 dB 1 2 dB 2 9 dB Distortion 115 dB SPL at one meter shaped spectrum see Figure 6 Second Harmonic power anechoic environment average level 100 Hz LF HF 2 4 1 1 watt 500 Hz 99 0 110 0 dB 0 7 300 60 watts 2 000 Hz 124 0 128 0 dB 2 1 5 000 Hz 1 0 THE DELTAMAX SYSTEM Specifications Figures SPEAKER SPECIFICATIONS Third Harmonic Enclosure Construction 100 Hz Enclosure Shell 2 4 18 mm 13 ply birch plywood 500 Hz Finish 0 7 Black textured paint 2 000 Hz Grille 0 3 Vinyl coated steel with foam 5 000 Hz Rigging DMS 1122 85PF only 0 1 Two point heavy duty L track system accepts Transducer Complement New Haven NH32102 2 double stud fittings or HF New Haven NH8192 2S or Ancra 42546 10 2 driver HP type 80 x55 horn single stud fittings with safety pins LF Dimensions DL type 12 in woo
21. THE DELTAMAX SYSTEM Eleclro Yoice OWNER S MANUAL DMC 1122X CONTROLLER DMS 1122 85 LOUDSPEAKER Table of Contents TABLE OF CONTENTS PAGE DESERIFHONANDERATDRES aa 1 SPECIFICATIONS Loi catio a ik 2 FIQOIB8 Rm LR 3 BLOCK PRORA eie PEINE O ne 6 OPERATION Front Paral Indicators and Controls qs cui 7 Bark COMME CIOS 8 System CDSN ossiseeccsecnecsaasexaveneescutucotussvensbalcssebsscyecsdvonacstuacsodppeckchencbocustesdbesedacduanesetancoesesh 9 AMPLIFIER CONTROLLER CALIBRATION Amplifier GATAN L u cass E E AE anna 11 Gontroller Calibration PrOCedUle iscccecscxccvssassccesesececsvcscouswsssesuarsivicacvasincstcediasccsessancsavisesuceendessensess 11 INSTALLATION AMBROSE NI Sa BNA ANNA ER ES V TY paska 12 Connector and Cable Requirement ncciccccscciccsvsscevescscavacevssessesavenscsesessotesaecestsvsasaseynevesvssseasssaenncsayes 12 Gontfoller Gonriectloris ssissncssiccesssxciuvecseviccassvessatccapennsansssnnciovsedsansdevedeupaeescoansbbesiaddtcescaccenshpnteees 12 Loudspsaker Vrae sce away vu vaa ev cra ORERE CoS ESEIA Sei 13 Multiple Loudspeaker Arta ys siss I IO PA aee asa 13 Speaker sinnis
22. ach cabinet has two identical connectors with parallel wiring for connecting additional DMS speaker systems The mating cable end connector Installation is the Neutrik Speakon NL4FC The pin connections are as follows Pin 1 LF Pin 1 LF Pin 2 HF Pin 2 HF Both the low frequency and high frequency inputs present a nominal eight ohm load to the amplifier however the compression driver has a low frequency protection capacitor in series Multiple Loudspeaker Arrays Arrays consisting of multiples of identical DeltaMax loudspeaker systems can be implemented in a vari ety of ways There does not need to be one control ler for every speaker cabinet Generally there only needs to be as many controllers as there are differ ent program sources For example a monaural program source requires one DMC 1122X con troller a stereo program source requires two DMC 1122X controllers etc In addition a DMC 2181X DMS 2181 subwoofer system may be added to a DMC 1122X DMS 1122 85 system The DMC 2181X is a stereo controller with left and right high outputs above 80 Hz and a mono summed sub output below 80 Hz A monaural pro gram source requires one DMC 2181X controller and one DMC 1122X controller a stereo program source requires one DMC 2181X controller and two DMC 1122X controllers For the sake of simplicity the following discussion will be confined to the various possible connection schem
23. ained by setting the HF Amplifier Cali bration trimpot to 250 watts page 11 Amplifier Controller Calibration Installation AMPLIFIER CONTROLLER CALIBRATION continued The HF section of the controller is now cali brated The HF Output Level trimpot may be ad justed as necessary for the desired frequency spectrum balance without affecting calibration 12 Remove the shorted 4 phone plug from the Gain Control Bus jack and set the Cal Clip Limit switch to the Limit position out Set the HF and LF Output Level controls to their center detent position or as desired 13 Turn the amplifier off and connect the speaker cables to the output of the amplifier Make cer tain that the lows are wired to the woofer and that the highs are wired to the compression driver In addition be sure to observe polarity when making speaker connections NOTES A The Amplifier Calibration trimpots may be adjusted during use with program material to set the desired amount of amplifier limiting The limiter in the controller will allow some fast transient peaks through allowing some amplifier clipping to occur on signal peaks after the calibration procedure The limiter circuit will however prevent long term amplifier clipping when adjusted properly B The Cal Clip Limit switch may be left in the recessed Cal Clip position in if the power amplifier has an internal limiter or if clip protection is not desired
24. all of the loud speakers are driven at the same level and the con troller monitors the voltage drive to each speaker Make sure that the amplifier is calibrated for 32 dB of gain and that the controller is calibrated to the ampli fier see AMPLIFIER CONTROLLER CALIBRATION section For the case where the Delta Max loudspeakers are powered by multiple amplifiers all driven at the same level and only one controller is used the sense line to that controller is connected to any one of the amplifier outputs Note that this requires the use of identical amplifiers each calibrated for 32 dB of gain and that the controller is calibrated to the am plifiers see AMPLIFIER CONTROLLER CALIBRA TION section Although the controller is only actually sensing one amplifier and one set of loud speakers they all are being protected equally as long as all of the amplifiers are performing identically For the case where the DeltaMax loudspeakers are powered by multiple amplifiers each driven at different levels and only one controller is used the sense line to that controller is connected to the out put of the amplifier that is delivering the highest power levels to the loudspeakers This is a fairly common occurrence where the levels of individual loudspeakers in an array are adjusted to provide even room coverage In this case the amplifier be ing sensed must be calibrated for 32 dB of gain and the controller is calibrated to that amplifie
25. as possible to 32 dB this is optimum but it can be in the range of 27 to 35 dB See the AMPLI FIER CALIBRATION PROCEDURE section 4 the LF and HF Amplifier Calibration trimpots on the controller to full counterclock wise Press the Cal Clip Limit switch to its re cessed Cal Clip position with a screwdriver or other suitable tool 5 Inorderto prevent thermal limiting from occur _ fing while calibrating the amplifier limit levels insert a shorted s inch phone plug tip sleeve 9 10 11 Amplifier Controller Calibration into the Gain control bus jack on the back of the controller The Thermal Limit LED may still come on but no gain reduction should be indi cated Send a 500 Hz sine wave test signal to the con troller input Adjust the signal source level until the low fre quency amplifier begins to clip you may turn up the LF Output Level on the controller if neces sary to get the amplifier to clip Clipping is noted by the clip indicator on the power amplifier or by monitoring the output with an oscilloscope Now turn the level down until the clip light just goes out or until the clipping disappears on the oscilloscope Turn the LF Amplifier Calibration trimpot on the controller clockwise with a screwdriver until the LF Amplifier Output Limit LED comes on Note that the slot of the trimpot is pointed at the ap proximate power rating of the amplifier for an 8 ohm load as denoted by the calibra
26. controller to monitor the status of the voice coil temperature and the cone diaphragm excursion of the loudspeakers in each frequency band If a loudspeaker in one of the frequency bands approaches its maximum ther mal limit a multi time constant compressor circuit with a variable compression ratio will reduce the peak and average levels of the full range input signal as necessary to protect the driver while preserving the spectral balance and the relative program dy namics When gain reduction occurs an Output Limit Temperature LED will light indicating which fre quency band loudspeaker is reaching its thermal limit If a loudspeaker in one of the frequency bands approaches it maximum excursion limit a dynamic frequency sensitive voltage clamping circuit at the output of that frequency band will clamp the peak of the output waveform at a level above which excur sion damage would occur to the loudspeaker hence preserving the overall spectral balance When volt age clamping occurs an Output Limit Excursion LED will light indicating which frequency band loud speaker is reaching its excursion limit The DMC Controller will also prevent long term am plifier clipping The controller must be calibrated as detailed in the AMPLIFIER CONTROLLER CALI BRATION section and the Cal Clip Limit switch must be in the Out position for this function to work prop erly If an amplifier in one of the frequency bands approaches clipping a multi time co
27. e full power capabilities of the DMS speakers will not be realized The use of am plifiers with significantly higher power ratings is wasteful and may endanger the loudspeakers it is generally not recommended Under certain circumstances however higher rated power amplifiers are acceptable It is acceptable to drive the DMS 1122 85 speaker with a stereo power amplifier having the recommended LF power rating utilizing one channel to drive the low frequencies and the other channel to drive the high frequencies For an extra degree of protection when operating in this configuration the user may want to set the HF Am plifier Calibration level to the 250 watt position to limit excessively high power levels from reaching the compression driver DMS 1122 85 speakers may be paralleled with other DMS 1122 85 speakers if the amplifier is capable of delivering adequate power to each speaker at the lower impedance Under no circumstances should other DMS or DMS speakers be paralleled on the same amplifier channels NOTE For proper operation of the protection circuitry the power amplifiers must be calibrated to have a voltage gain between 27 and 35 dB 32 dB is optimum See the AMPLIFIER CONTROLLER CALIBRATION section CONNECTOR AND CABLE REQUIREMENTS Controller Connections The DeltaMax controllers have 3 pin XLR type connectors for signal input and output The input is electronically balanced and has a female connector with pin 1 as a
28. ect sense lines to a bridged amplifier without shorting out one of the legs of the amplifier High quality ba nana plugs may be used for these connections but wires underneath the binding posts provide greater security Small gauge wire e g 22 gauge is ac ceptable for these connections because there is minute current flow but be sure the connections are secure and safe enough for the high voltages from the amplifier output The gain control bus in the DMC controllers is ac cessible through two conductor 4 jack on the back of the controller This feature is used when it is desired for the gain of two or more units to track Using a standard 4 inch patch cable connect the jacks together For more than two units use Y con nectors For example 1 When multiple controllers and loudspeakers are used such as in a stereo system the controller s Gain Control jacks should be con nected together to maintain level balancing and imaging 2 Whenthe DMC 1122X DMS 1122 85 full range system is used with the DMC 2181X DMS 2181 or DMS 1181 subwoofer system the controller s Gain Control jacks should be connected together between the two controllers to ensure flat frequency response when the con trollers are operating in the protection mode Loudspeaker Connections The DMS 1122 85 speaker system is equipped with 4 pin Neutrik Speakon NLAMPR connectors for electrical connection to the woofer and compression drivers E
29. ed by simply adjusting the level controls on the amplifier The procedure for calibrating an amplifier to have 32 dB of gain is as follows 1 With the amplifier turned on and without speak ers hooked on the amplifier output apply 0 5 volt rms 1 000 Hz sine wave signal to the input of the amplifier 2 Adjust the amplifier level control until the output of the amplifier measures 20 volts rms NOTE If the amplifier will be operated in the mono bridged mode it should be calibrated when wired in the mono bridged configuration CONTROLLER CALIBRATION PROCEDURE This procedure is for calibration of the DMC controller s internal amplifier limit circuits to the actual clip level of the power amplifiers Calibration is set by the LF and HF Amplifier Calibration trimpots on the front panel Before plugging in the ac power cord be sure the controller is wired for the correct primary mains voltage Disconnect the speakers and remove the security cover from the controller by removing the two screws on the front panel of the controller Perform the following procedure 1 Connectthe controller to the low and high fre quency power amplifier channels as detailed in the INSTALLATION section 2 Besurethe controller LF and HF Sense Inputs are connected to the correct amplifier outputs and the speakers are disconnected from the amplifier 3 Setthe low and high frequency amplifier gain controls for 32 dB voltage gain or as close
30. een set up so that the DMS loud speaker systems will have a flat frequency response in an anechoic environment when the Output Level trimpots on the controllers are set in the 0 dB detent position and the amplifiers all have the same gain i e the amplifiers are calibrated for 32 dB of gain as detailed in the AMPLIFIER CONTROLLER CALI BRATION section This gives the user a stan dard reference every time the system is set up Adjustments to the drive levels of the low and high frequency sections are then only needed to compensate for room acoustics or array configura tion When adjustments are required they should be made with the Output Level trimpots on the control lers The level controls on the amplifiers should be left in their calibrated positions See the MULTIPLE LOUDSPEAKER ARRAY section for circumstances when it is permissible to adjust the amplifier level controls Operation The input circuit of the DMC controllers clips with a 18 dBu 6 2 volts rms input signal The input signal level display has three LED s calibrated to 20 0 and 16 dBu To avoid clipping the input should be driven only to the point that the 16 dB LED lights on instantaneous peaks If more gain is desired from the controller the Output Level trimpots may be turned up Note that there are calibrated markings on the front panel of the controller 3 dB per division to enable accurate gain adjustments Extensive modeling circuits allow the
31. effect occurs when a loud speaker is placed near a boundary a wall a ceiling a floor etc In the upper bass lower midrange re gion typically below 500 Hz an array of multiple woofers will have greater directivity a higher Q than that of a single woofer resulting in higher on axis sound pressure levels Because the equalization of the 1122 controller is tailored to provide a flat acoustic frequency response with a single DMS 1122 85 loudspeaker an over emphasis of the low and lower mid frequencies can result when mul tiple loudspeakers are assembled together The ex act nature of this phenomenon will depend on the details of the array the number of loudspeakers their spacing the splay angles proximity to bound aries etc An increase in acoustic response at these frequencies can result in low frequency feed back or unwanted rumble The controller features a low frequency shelving equalization filter to compen sate for the low frequency build up from multiple loudspeakers The user may adjust the cut only filter by turning the LF SHELVING FILTER trimpot on the front panel counterclockwise Full clockwise rotation returns the controller oudspeaker combination to flat frequency response SPEAKER INSTALLATION The DMS 1122 85 APF is a flying version of the DMS 1122 85 AP Each cabinet has a total of four lengths of aircraft type L track rigging hardware two on the top and two on the bottom This two point
32. erformance compressor and voltage limiter which provide speaker excursion protection voice coil temperature protection and amplifier maximum power limiting Where very high levels of deep bass are required the DMC 2181X DMS 2181 DeltaMax subwoofer system may be added to the 1122 DMS 1122 85 The DMS 2181 loudspeaker cabinet with two manifold 18 inch speakers and the DMC 2181X series electronic controllers were designed specifically to work in conjunction with the two way systems to provide extremely high level low frequency output down to 35 Hz Optimum performance of these speakers can only be assured when used with their dedicated elec tronics Although maximum protection is not avail able the DeltaMax systems are also effectively controlled by the Electro Voice Dx34 digital cross over system FEATURE SUMMARY Fourth order Linkwitz Riley crossover filters provide smooth accurate response through the crossover region Special equalization circuits allow flat wideband system response Sensing circuits for the drivers control the com pressor and voltage limiter to prevent voice coil overheating overexcursion and amplifier clip ping without affecting spectral balance or pro gram dynamics Dual time constant compressor circuit with vari able compression ratio reduces peak and aver age levels for loudspeaker thermal protection and amplifier clipping prevention as necessary while preser
33. es for arrays of identical loudspeakers with only one program source and without subwoofers A stereo array can be broken down and analyzed as two separate arrays each having a separate pro gram source Subwoofer wiring is addressed in the DMC 2181X manual Amplifier inputs outputs and sense lines will be addressed in the discussion The outputs SUB OUT LF OUT HF OUT etc of the DMC controllers are connected to the inputs of multiple amplifier channels through the use of Y cords or multiple Y cords The number of am plifier channels that can be driven by a single output of a controller is limited only by the total combined input impedance of the paralleled amplifiers The DeltaMax controller outputs can drive a combined impedance of 600 ohms or greater For example sixteen amplifiers each having an input impedance of 10 k ohms can be paralleled off of one DMC out put If itis necessary to parallel additional amplifi ers line level distribution amplifiers will have to be employed to drive the amplifier inputs Alternatively multiple DMC controllers with paralleled inputs could be used to distribute the amplifier load For the case where all of the DeltaMax loudspeak ers are paralleled on the output of a single amplifier page 13 Installation INSTALLATION continued channel and only one controller is used the sense line to that controller is connected to the output of the amplifier In this case
34. ese LED s light when the temperatures of the woofer or compression driver voice coils approach their maximum allowable limit Under this condition gain reduction will occur at the input of the controller so that the maximum temperature limits will not be exceeded for either the woofer or compression driver A LF This control adjusts the level of the low frequency output signal The control range is from 12 to 12 dB B HF This control adjusts the level of the high frequency output signal The control range is from 12 to 12 dB NOTE The gain has been structured within the DMC 1122X controllers so that DMS 1122 85 loudspeaker will have a flat frequency response as shown in Figure 1 in an anechoic environment with the output levels of the controllers set in the 0 dB detent posi tion and with the amplifier channels having identical gain driving the LF and HF sections of the speaker Operation THE DELTAMAX SYSTEM OPERATION continued 5 AMPLIFIER CALIBRATION CONTROLS These controls are used for calibrating the controller to both the low and high frequency amplifiers so that the controller can monitor the clipping of the amplifier outputs and if de sired act as a limiter to prevent amplifier clip ping See AMPLIFIER CONTROLLER CALIBRATION section NOTE The calibrated markings on the front panel correspond to the power level that an amplifier would deliver to an 8 ohm load A crude approximate calibrat
35. fer Height Impedance see Figure 7 584 mm 23 00 in Nominal LF HF Width front 8 8 ohms 375 mm 14 75 in Minimum LF HF Width back 8 6 6 6 ohms 199 mm 7 84 in Input Connections Depth Two Neutrik NL4MPR Speakon connectors 356 mm 14 00 in paralleled Angle Recommended Amplifier Power 30 wedge HF Net Weight 125 250 watts 26 8 kg 59 Ib LF Shipping Weight 300 600 watts 29 0 kg 64 Ib IL NT I III IT 00101110811 ET LETT TN f E E EE 66 10 TK 2K E FREQUENCY IN HERTZ FIGURE 1 DMC 1122X DMS 1122 85 Axial Frequency Response 1 watt 1 meter into LF mid band FIGURE 2 DMC 1122X Frequency Response page 3 x N 1 z 5 E lt 9 p URES 1525 NL NEM 4 kHz Figures FIGURE 3 DMC 1122X DMS 1122 85 Polar Response octave pink noise 4 volts at 20 feet HORIZONTAL VERTICAL page 4 THE DELTAMAX SYSTEM Figures 7 m 1153 28 555 MI ORIZONTAL A T 50 100 200 500 2K 10K 20 DIRECTIVITY INDEX 0 dB 888 888 BEAMWIDTH IN DEGREES 648 FIGURE 4
36. flying system makes maximum use of the trapezoi dal cabinets permitting a wide range of angle adjust ment and offering maximum flexibility in array design and implementation for both the touring sound com pany and the sound contractor The track accepts the New Haven NH32102 2 double stud fittings and the New Haven NH8192 2S and Ancra 42546 10 single stud fittings Electro Voice offers the DMS series of rigging hardware a complete line of flying accessories to be used with the DMS speaker sys tems page 14 THE DELTAMAX SYSTEM INSTALLATION continued CAUTION The DMS 1122 85 APF speaker system should be suspended overhead only in accordance with the procedures and limitations specified in the DMS Loudspeaker System Flying Manual which is packed with each flying speaker sys tem CONTROLLER INSTALLATION Power Source The DMC 1122X comes prewired from the factory for operation at 120 volts To operate at 240 volts the primary wiring of the power transformer must be altered CAUTION Hazardous voltages and currents may be en countered within the chassis The service infor mation contained within this document is for use by Electro Voice authorized warranty stations and qualified service personnel only To change the transformer primary wiring configura tion use the following procedure 1 Unplug the controller s power cord from the ac power source 2 Remove the seven screws securing the
37. ion can be obtained by rotating the control until the slot of the trimpot points at a power level equivalent to the amplifier power rating for an 8 ohm load When the trimpot is in its mid position it is pointing at 400 watts 6 LF SHELVING FILTER This control is used when multiple DMS 1122 85 systems are ar ranged and low frequency mutual coupling produces unbalanced spectral content The control will attenuate low frequency energy The control range is 0 to 12 dB 7 CAL CLIP LIMIT SWITCH This switch se lects the mode that controller will monitor the amplifiers assuming that the controller has been calibrated to the amplifiers see AMPLI FIER CONTROLLER CALIBRATION section With the switch pushed in the Amplifier Limit LED s will indicate when the amplifiers are clipping With the switch in the outward posi tion the Amplifier Limit LED s will indicate that gain reduction is occurring to prevent the am plifiers from clipping NOTE If the controller has not been cali brated to both the low and high frequency amplifiers the Cal Clip Limit switch should be pushed in This will defeat the compressor limiter from trying to prevent amplifier clipping e The Amplifier Limit LED s will still flash when the amplifier exceeds the power levels that the Amplifier Calibration trimpots are set to Poor sound quality can result with incorrect calibra tion and the compressor limiter
38. l prod uct data sheet or owner s manual beginning with the date of original purchase If such nction occurs during the specified period the product will be re paired or replaced at our option without charge The product will be returned to the custorner 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 individual product data sheet or owner s manual c malfunc tion resulting from use or operation of the product other than as specified in the product data sheet or owner s manual d malfunction resulting from mis use or abuse of the product or e malfunction oc curring at any time after repairs have been made to the product by anyone other than Electro Voice or any of its authorized service representatives Ob taining Warranty Service To obtain warranty ser vice a customer must deliver the product prepaid to Electro Voice or any of its authorized service rep resentatives together with proof of purchase of the product in the form of a bill of sale or receipted in voice A list of authorized service representatives is available from Electro Voice at 600 Cecil Street Buchanan MI 49107 616 695 6831 or 800 234 6831 and or Electro Voice West at 8234 Doe Av enue Visalia CA 93291 209 651 7777 or 800 825 1242 Incidental and Consequential Dam ages Excluded Product
39. lers provide the user with information to make adjustments or changes to the system if desired to eliminate the protec tion and increase the acoustic output For ex ample lf an excessive amount of low frequency excur sion protection is occurring selective equaliza can be used s octave band equalizer parametric equalizer etc to the level the frequency range that is causing the exces sive excursion allowing the overall level to be turned up the desired amount of high level low frequency response still cannot be ob tained subwoofers or additional subwoofers should be added to the system excessive amount of loudspeaker thermal protection is occurring in any frequency band more speaker systems are generally needed If the program material has a lot of energy con centrated in a relatively small frequency range selective equalization may serve as an effective compromise page 10 THE DELTAMAX SYSTEM lf excessive amplifier clipping or amplifier clip ping prevention is occurring without excessive loudspeaker thermal protection or excursion protection larger power amplifiers should be used e lf excessive loudspeaker thermal protection and excursion protection is occurring more speak ers should be used If excessive overall gain reduction is occurring more speakers should be added 12 dB gain reduction LED is on for any significant portion of time
40. nstant compres sor limiter circuit will reduce the peak and average levels of the full range input signal as necessary to prevent long term clipping while preserving the over all spectral balance When gain reduction occurs an Output Limit Amplifier LED will light indicating which frequency band amplifier is reaching its power limit With the Cal Clip Limit switch pushed in gain reduc tion will not occur to prevent amplifier clipping and the Output Limit Amplifier LED s will simply indicate when the amplifiers are going into clipping The DeltaMax DMC controllers provide protection for the loudspeakers without affecting the overall spectral balance or dynamic range The controllers have an LED display to inform the user when the protection circuitry is activated and what is causing the protection to take place Each frequency band has three LED s to indicate loudspeaker thermal page 9 Operation OPERATION continued protection activation loudspeaker excursion protec tion activation and amplifier clipping or amplifier clip ping prevention In addition there is an LED display to indicate the amount of long term overall gain reduction occurring due to loudspeaker ther mal protection and amplifier clipping prevention The instantaneous loudspeaker excursion volt age clamping protection is not reflected in the overall gain reduction display In very high powered applications the detailed displays on the DMC control
41. r See AMPLIFIER CONTROLLER CALIBRATION sec tion The other amplifiers must be identical to the one being sensed with the exception that their levels are turned down as necessary to obtain even room coverage Although the controller is actually sensing only one amplifier and one set of loudspeakers they are all being protected because the one being driven the hardest is triggering the protection Note in the last two examples where multiple amplifi ers are used to power multiple loudspeakers in an array the level setting and calibration of the amplifi ers are critical to ensure that all of the loudspeakers are protected with only one sense line If in the nor mal course of operation the level settings of the am plifiers are likely to be tampered with the system should be set up with one controller per amplifier allowing each set of speakers to be monitored In this case each amplifier would be calibrated for 32 dB of gain and any level adjustment of loud speakers would be done with the Output Level trimpots on the controllers It should be noted that when multiple DMS 1122 85 loudspeaker systems are closely assembled in an THE DELTAMAX SYSTEM array a build up of low and lower mid frequencies can occur The cause of this phenomenon is twofold Mutual acoustic coupling between woofers at the lowest frequencies typically below 100 Hz results in increased efficiency and hence increased sound pressure level A similar
42. repair or replacement and retum to the customer are the only remedies pro vided to the customer Electro Voice shall not be li able for any incidental 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 consequential damages so the above limitation or exclusion may not apply to you Other Rights This warranty gives you specific legal rights and you may also have other rights which vary from state to state Electro Voice Speakers and Speaker Systems are guaranteed against malfunction due to defects in materials or workmanship for a period of five 5 years from the date of original purchase The Limited Warranty does not apply to burned voice coils or malfunctions such as cone and or coil damage re sulting from improperly designed enclosures Elec tro Voice Electronicsare guaranteed against malfunction due to defects in materials or workman ship for a period of three 3 years from the date of original purchase Electro Voice Flying Hardware including enclosure mounted hardware and rigging accessories is guaranteed against malfunction due to defects in materials or workmanship for a period of one 1 year from the date of original purchase Additional details are included in the Uniform Limited Warranty statement Service and repair address for this product Electro Voice Inc 600 Cecil Street Buchanan Michigan
43. rs only when the maximum temperature excursion and am plifier capabilities are exceeded for either the woofer or compression driver The Output Limits display indicates which limits are being exceeded when gain reduction occurs B EXCURSION LIMIT These LED s light when the excursion of the woofer cone or compression driver diaphragm approach their maximum allowable limit Under this condition voltage clamping will occur at the output of either the low or high frequency section so that the maximum excursion limits will not be exceeded for either the woofer or compression driver C AMPLIFIER LIMIT These LED s will provide status information for the high and low frequency power amplifiers if the controller has been calibrated to the amplifiers See the AMPLIFIER CONTROLLER CALIBRATION section With the Cal Clip Limit switch pressed in the LED s will signal the occurrence of amplifier clipping With the switch in the outward position the LED s indicate that gain reduction in the form of hard limiting is occurring at the input of the controller to prevent the amplifiers from clipping NOTE Do not allow the 12 dB gain reduction 4 OUTPUT LEVEL CONTROLS indicator to stay on continuously If the 12 dB indicator is allowed to stay on for long periods the speaker may be damaged The input signal should be reduced until the 12 dB indicator lights only on loud passages 3 OUTPUT LIMIT INDICATORS A TEMPERATURE LIMIT Th
44. ted markings on the front panel of the controller Note also that this is the maximum amount of power ca pable of being delivered to a single driver in this amplifier configuration The LF section of the controller is now cali brated The LF Output Level trimpot may be adjusted as necessary for the desired frequency spectrum balance without affecting calibration Change the input test signal to a frequency of 5 000 Hz Adjust the signal source level until the high fre quency amplifier begins to clip you may tum up the HF Output Level on the controller if neces sary to get the amplifier to clip Now turn the level down until the clip light just goes out or until the clipping disappears on the oscillo Scope Turn the HF Amplifier Calibration trimpot on the controller clockwise with a screwdriver until the HF Amplifier Output Limit LED comes on Note that the slot of the trimpot is pointed at the ap proximate power rating of the amplifier for an 8 ohm load as denoted by the calibrated mark ings on the front panel of the controller Note also that this is the maximum amount of power capable of being delivered to a single driver in this amplifier configuration If the power rating of the high frequency power amplifier is much greater than 250 watts and hence the HF Am plifier Calibration trimpot on the controller is set much greater than 250 watts then an additional margin of safety for the high frequency driver can be obt
45. the level should be turned down Levels driven beyond this point may exceed the protection capability of the pro tection circuitry When multiple controllers are used such as in a stereo system the control voltages should be slaved together as detailed in the INSTALLATION section The gain of all of the controllers will then track whenever gain reduction occurs due to loud speaker thermal protection or amplifier clipping prevention regardless of which loudspeaker or amplifier was exceeding its limit This will prevent acoustic image shifting at very high levels When a DMC 2181X DMS 2181 subwoofer system is used with a full range DeltaMax system such as a DMC 1122X DMS 1122 85 the control voltages should be slaved together to prevent spectral bal ance shifting at high levels when gain reduction occurs for loudspeaker thermal protection or am plifier clipping prevention The loudspeaker excur sion voltage clamping protection will still operate independently in each frequency band in each controller when the control voltages are slaved THE DELTAMAX SYSTEM AMPLIFIER CONTROLLER CALIBRATION AMPLIFIER CALIBRATION PROCEDURE Maximum performance of the DeltaMax controller protection circuitry occurs under the most severely over driven conditions when the voltage gain of the amplifiers fall in the range of 27 to 35 dB with 32 dB being optimum This gain range is typical of most high power amplifiers and can easily be adjust
46. ving relative program dynamics Voltage clamp loudspeaker excursion protec tion does not alter overall program dynamics or frequency response Aconnection to the control voltage is available through a jack on the back panel This allows precise gain tracking when more than one unit is used The front panel display shows drive signal level and compressor gain reduction Sensing dis play for each sense channel shows amplifier limit excursion limit and temperature limit When its limit is approached each LED lights yellow Speaker system is trapezoidal for compact ar rays Flying versions feature integral steel re inforced fittings to facilitate hanging Both the woofer and the compression driver employ the best available technology for high power and accurate sound reproduction Astate of the art flat front constant directivity horn is utilized for even coverage and flat re sponse Low frequency shelving filter to facilitate control of multi enclosure arrays page 1 Specifications THE DELTAMAX SYSTEM CONTROLLER SPECIFICATIONS CHANNEL CONFIGURATIONS Monoaural two way two sense channels FILTER TYPE 4th order Linkwitz Riley Connector Female 3 pin XLR type SENSE CHANNEL INPUTS Type Floating differential CROSSOVER FREQUENCY Maximum Level 1 480 LF 145 V rms GAIN HF 145 V rms 5 dB nominal Impedance SIGNAL PATH EQUALIZ
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