Crown MA-2402 - Manuals

page 5 MA 2402 Power Amplifier Operation Manual 1 Welcome Congratulations on purchasing the renowned Crown ® Macro-Tech ® 2402 power amplifier. It is designed to provide enormous levels of pure, undistorted power in a rugged, low-profile package — making it the choice for pro sound reinforcement. It...

Operation Manual MA 2402 Power Amplifier page 6 Figure 3.1 Dimensions Figure 3.2 Airflow 3.1 Unpack Your Amplifier Please unpack and inspect your amplifier for any damage that may have occurred during transit. If damage is found, notify the transportation company immediately. Only you can initiate a...

page 7 MA 2402 Power Amplifier Operation Manual 3.4 Choose Input Wire and Connectors Crown recommends using pre-built or profes-sionally wired, balanced line (two-conductor plus shield), 22-24 gauge cables and connec-tors.The factory-installed PIP2-FXQ input mod-ule accepts 3-pin male XLR connectors...

Operation Manual MA 2402 Power Amplifier page 8 3.6 Wire Your System Turn down the Level controls (fully counterclock-wise) and turn off the amplifier before wiring it as described below. 3.6.1 Stereo Mode See Figure 3.6. Set the back panel stereo/mono switch to Stereo. INPUTS: Connect input wiring ...

Operation Manual MA 2402 Power Amplifier page 10 3.7 Set Input Sensitivity The input sensitivity switch inside the amplifier is set to 0.775 volt RMS at the factory. (Factory setting for international models is 1.4V). It can be changed to 1.4 volts or a voltage gain of 26 dB. The 26 dB gain setting ...

page 11 MA 2402 Power Amplifier Operation Manual 4.2 Front Panel Controls andIndicators The diagram below shows the controls and indicators on the front panel of the Macro-Tech 2402. A. Dust Filters The dust filters remove large particles from the air drawn in by the cooling fan. Check the filters r...

page 13 MA 2402 Power Amplifier Operation Manual 4.4 Indicators The amber Enable indicator is provided to show that 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 the status of the high-voltage powe...

Operation Manual MA 2402 Power Amplifier page 14 5.1 Protection Systems Macro-Tech amplifiers provide extensive pro-tection and diagnostics capabilities. Protection systems include ODEP, "standby" mode, fuses (or breakers), and special thermal protection for the unit's transformers. 5.1.1 OD...

page 15 MA 2402 Power Amplifier Operation Manual 5.1.4 Fuses and Circuit Breakers The power supplies of the Macro-Tech 2402 are protected by circuit breakers. With rated loads and output levels, the circuit breakers should only shut down the amplifier in the rare instance of a catastrophic failure. ...

Operation Manual MA 2402 Power Amplifier page 18 6 Troubleshooting The table in Figure 6.1 shows the possible states for the ODEP and Signal/IOC indica-tors. It also describes the conditions that may be associated with the different indica-tor states. The Enable indicator will be off with the first ...

page 19 MA 2402 Power Amplifier Operation Manual 7.1 Overview Your Macro-Tech amplifier incorporates several advanced technological features including real-time computer simulation of output transistor stress, low-stress output stages, an advanced heat sink embodiment and the PIP2 (Program-mable Inp...

Operation Manual MA 2402 Power Amplifier page 20 The bridge-balanced circuit (U104-B) receives a signal from the output of the amplifier, and differ-ences it with the signal at the Vcc supply. The bridge-balanced circuit then develops a voltage to drive the bridge-balanced output stage. This results...

page 21 MA 2402 Power Amplifier Operation Manual Minimum Guaranteed Power Macro-Tech 2402 120 VAC, 60 Hz Units, Stereo mode, per channel, both channels driven 1 kHz with 0.1% THD Stereo, 2 ohms per ch. Stereo, 4 ohms per ch. Stereo, 8 ohms per ch. 1,050 W 800 W520 W 120 VAC, 60 Hz Units, Bridge mono...

page 25 MA 2402 Power Amplifier Operation Manual Here are the equations used to calculate the data presented in Figure 9.1: The quiescent power draw of 90 watts is a maximum value and includes power drawn by the fan. The following equation converts power draw in watts to current draw in amperes: The...

page 27 MA 2402 Power Amplifier Operation Manual Crown amplifiers are quality units that rarely require ser-vicing. Before returning your unit for service, please con-tact Crown Technical Support to verify the need for servicing. This unit has very sophisticated circuitry which should only be servic...

Operation Manual MA 2402 Power Amplifier page 28 YEAR 3 SUMMARY OF WARRANTY Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. war-rants to you, the ORIGINAL PURCHASER and ANY SUBSEQUENT OWNER of each NEW Crown product, for a period of three (3) years from the date of ...

page 29 MA 2402 Power Amplifier Operation Manual YEAR 3 11 Warranty WORLDWIDE EXCEPT USA & CANADA of the reason for failure, except as excluded in this Warranty. 1 Note: If your unit bears the name “Amcron,” please substitute it for the name “Crown” in this warranty. ITEMS EXCLUDED FROM THIS CRO...

page 31 MA 2402 Power Amplifier Operation Manual Online registration is also available at http://crownweb.crownintl.com/webregistration When this form is used to register your product, it may be mailed or faxed. Crown Audio, Inc. Fax: 574-294-8329 1718 W Mishawaka Rd Elkhart IN 46517-9439 Please not...

page 33 MA 2402 Power Amplifier Operation Manual Crown Factory Service Information Shipping Address: Crown Factory Service, 1718 W. Mishawaka Rd., Elkhart, IN 46517 PLEASE PRINT CLEARLY SRA #: __________________(If sending product to Crown factory service.) Model: _________________________________ S...