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Crown Audio MA-24X6 manual

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  • Page 1

    Operation Manual MA-24X6 Obtaining Other Language Versions: T o obtain inform ation in another lan guage about th e use of this pro duct, please contac t your local C rown Dist ribut or . If you need a ssista nce loca ting yo ur local distr ibutor , please contact Crown at 574-294- 8000. This manual does n ot include all of the details of design, p[...]

  • Page 2

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 2 1) Read these instructions. 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 dry cloth. 7) Do not block any ventilation openings. Install in accordance with the manufac turer’ s inst[...]

  • Page 3

    page 3 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l DECLARA TION of CONFORMITY Crown International, Inc. TCF T echnical Certificate No: P4300CRI1.IWS Sue Whitfield 574-294-8289 swhitfield@crownintl.com European Repr esentative's Name and Address: Nick Owen 19 Clos Nant Coslech Pontprennau Cardiff CF23 8ND United Kingdom C[...]

  • Page 4

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 4 Important Safety Instructions ............ ............. ......... ............ ............ ............ ............ ... 2 Declaration of Conformi ty ............... ............ ............ ............ .......... ............ ............ ..... 3 1 Welcome ..............[...]

  • Page 5

    page 5 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l 1 We lcome Congratulations on your purchase of a Macro- Te c h ® dual level professional power amplifier . Y our amplifier has a separate high-power and medium-power channel, making it ideal for biamplified systems. The Macro-T ech 24x6 combines one channel of a Macro-T ech [...]

  • Page 6

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 6 19 in 48.3 cm 16 in 40.6 cm 3.5 in 8.9 cm 2.5 in 6.35 cm SIDE VIEW 2.1 Unpack Y our Amplifier Please unpack and inspect your amplifier for any damage that may have occurred during transit. If dama ge is found, notify the transpor- tation company immediately . Only you can ini[...]

  • Page 7

    page 7 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l 2.4 Choose Input Wire and Conn ector s Figure 2.3 shows connector pin assignments for balanced wiring, and Figure 2.4 shows connec- tor pin assignments for unbalanced wiring. NOTE: Custom wiring should only be performed by qu alified personnel. Balanced Line Unbalanced Line F[...]

  • Page 8

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 8 CH-2 OUTPUTS CH-1 2.5 Choose Output Wire and Con- nectors Crown recommends using pre-built or profes- sionally wired, high-qu ality , two-conductor , heavy gauge speaker wire and connectors. Y ou may use banana connectors, terminal forks or bare wire for your output connector[...]

  • Page 9

    page 9 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l 2.6 Wire Y our System This section describes the most common way to install the Macro-T ech 24X6 and 36X12. Each model is designed for biamplif ied systems and includes both a high-power and a medium- power channel. Because each channel produces a dif ferent power level, the [...]

  • Page 10

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 1 0 2.7 Connect to AC Mains Connect the AC power cordset of your ampl ifier to the AC mains power source (power outlet). NOTE: The third prong of this connecto r (ground) is an important s afety feature. Do not attempt to disable this ground connection by using an adapter or ot[...]

  • Page 11

    page 1 1 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l 3.1 Precautions Y our Macro-T ech Series amplifier is protected from internal and external faults, but you should still take the following precautions for optimum performance and safety: 1. Before use, your amplifier first must be con- figured for proper oper ation, includi[...]

  • Page 12

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 1 2 3.2 Front P anel Controls and Indic ator s A. Dust Filter Removes large particles from the air at the air intake. The filt er elements can be easily removed for cleaning by gently pulling them away from the front panel. B. Level Control Rotary detented level control, one pe[...]

  • Page 13

    page 1 3 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l 3.3 Back P anel Controls and Connectors G. Power Cord 120 V A C, 60 Hz units have a 20-amp (12 A W G) line cord with a grounded NEMA 5-15P plug. See Section 8 for AC power usage. H. Reset Switches The reset switches are used to reset the break- ers that safeguard each power[...]

  • Page 14

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 1 4 NOTE: For detailed information about these Crown amplifier features, please consult the Crown Amplifier Application Guide , available on the Crown website at www .crownaudio.com 4.1 Protection Systems Y our Crown amplifier provides extensive pro- tection and diagnostic capa[...]

  • Page 15

    page 1 5 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l 4.1.4 T ransformer Thermal Protection All Macro-T ech amplifiers have transformer thermal protection. It protects the power sup- plies from damage under th e rare con ditions of transformer temperatures rising too high. A thermal switch embedded in ea ch transformer removes[...]

  • Page 16

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 1 6 4.3 Options 4.3.1 PIP Modules Versatile P IP (Programmable Input Processor) modules provide flexible expansion features that can be added to customize the amplifier . PIP modules plug into the connecto r inside the back panel of the amplifier . PIP modules are available wit[...]

  • Page 17

    page 1 7 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l 5.1 Indicators The front panel has several helpful indicator LEDs (Figure 5.1). The amber Enable indicator is provided to show the amplifier has been turned on (or enabled) and that its low voltage power supply and forced-air cooling system are working. It does not indicate[...]

  • Page 18

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 1 8 Figure 5.2 ODEP and Signal /IOC Indicato r S tates 5 T roubleshooting[...]

  • Page 19

    page 1 9 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l Each channel is powered by its own power transformer , T100 or T200. Both channels share TF-1, a low voltage transformer . The sec- ondary outputs of each transformer are full- wave rectified by heavy duty bridge rectifiers and are filtered by large computer grade capac- it[...]

  • Page 20

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 2 0 6 Theor y of Operation ONL Y ONE CHANNEL SHOWN NPN HI OUTPUT STAGE NPN L OW OUTPUT STAGE PNP L OW OUTPUT STAGE PNP HI OUTPUT STAGE + OUTPUT +Vcc –Vcc TRANSLATOR LV A LV A +Vcc –Vcc BIAS CURRENT LIMIT TRANSLATOR BALANCE INPUT STAGE P.I.P. BALANCED INPUTS XLR VARIABLE GAI[...]

  • Page 21

    page 2 1 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l 7 Specifications Minimum Guaranteed P ower 120V A C, 60 Hz Units Macro-T ech 24X6 Macro-T ech 36X12 International Units Macro-T ech 24X6 Macro-T ech 36X12 Power in watts per channel,1 kHz, 0.1% THD Channel 1 2 ohms per ch. 4 ohms per ch. 8 ohms per ch. 1050W 800W 520W 1800W[...]

  • Page 22

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 2 2 Perf ormance (continued) Macro-T ech 24X6 Macro-T ech 36X12 Output Impedance See Figure 7.3 See Figure 7.3 Load Impedance (Note: Safe with all types of loads) 2, 4, 8, 16 ohms 2, 4, 8, 16 ohms Voltage Gain (8-ohm load, rated ou tput at 1 kHz, maximu m level setting) 83:1 ±[...]

  • Page 23

    page 2 3 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l +45˚ 0˚ –45˚ 100 1 K 10 K 20 K FREQUENCY (Hz) 7 Specifications 10 100 1 K 10 K 100 K FREQUENCY (Hz) +2 +1 0 –1 –2 –3 –4 dB –5 –6 –7 4 ohm 8 ohm 1 watt 504.0 126.8 31.8 MILLIOHMS 8.0 2.0 6 dB 20 100 1 K 10 K 20 K 400 200 100 0 600 800 1000 1200 1400 FREQUE[...]

  • Page 24

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 2 4 This section provides detailed information about the amount of power and current drawn from the Macro-T ech 24X6 and 36X12 amplifiers and the amount of heat produced under vario us conditions. The calculations presented here are intended to provide a realistic and reliable [...]

  • Page 25

    page 2 5 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l Figure 8.1 Macro-T ech 24X6 Power Draw, Current Draw and Thermal Dissipation at Various Duty Cycles Figure 8.2 Macro-T ech 36X1 2 Power Draw, Current Draw and Thermal Dissipation at Varioius Duty Cycles 8 AC Power Draw and Thermal Dissipation[...]

  • Page 26

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 2 6 Crown amplifiers are quality units that rarely require servicing. Before returning your unit for servicing, please contact Crown T echnical Support to verify the need for servicing. This unit has very sophisticated circuitr y which should only be serviced by a fully trained[...]

  • Page 27

    page 2 7 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l YEAR 3 SUMMAR Y OF W ARRANTY Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4 095 U.S.A. w arrants to you, the O RIGINAL PU RCHASER and AN Y SUB- SEQUENT OWNER of each NEW Crown product, for a period of three (3) years f rom the date of purchase by th[...]

  • Page 28

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 2 8 YEAR 3 10 Warranty WORLDWIDE EXCEPT USA & CANADA SUMMAR Y OF W ARRANTY Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4 095 U.S.A. w arrants to you, the ORIGINAL PURCHASER and ANY SUB- SEQUENT OWNER of each NEW Crown1 product, for a period of thre[...]

  • Page 29

    page 2 9 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l Crown Factor y Service Information Shipping Address: Crown Facto ry Ser vice, 1718 W . Mishawaka Rd., Elkhar t, IN 46517 Phone: 1-800-342 -6939 or 1-574- 294-8200 Fax: 1-574- 294-8124 Owner’ s Name : ___________________ _____________ ___________ ______________ ___________[...]

  • Page 30

    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 3 0 This page intentionally left blank.[...]

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    page 3 1 Macro-Tech MA- 24X6 & 36X12 Power Amplifiers Operation Manua l This page intentionally left blank.[...]

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    Operation Manual Macro-Tech MA-24X6 & 36X12 Pow er Amplifiers pag e 3 2[...]