INSTRUCTION MANUAL CXA120 Power Amplifier CXA120-AMPLIFIER �� ������ ������ �� �� ����������������������������������� � ����� � � � � �� �� ��� ������� ������ CXA120-AMPLIFIER ������������ �������������� �� �������� �������������������������������������������� �������������������������������������������� ��� ����� �������������� ����������������������� ���������� ���������� ���� ������������������� ���������������������������������������������� ��� ��� ��� � ������� ��� � ��
CAUTION AVIS RISK OF ELECTRIC SHOCK • DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER. CONFIER L'ENTRETIEN AU PERSONNEL QUALIFIE.
2. INTRODUCTION The CXA120 is designed for continuous duty in speech, music, paging and sound reinforcement applications in churches, schools, offices, arenas, hotel meeting rooms, convention centers, recreation facilities and other venues demanding high performance, flexible features, and rugged dependability. The CXA120 offers two discrete inputs with priority. The main program input is actively balanced and terminated to screw-terminal connections on the rear panel.
3. FRONT PANEL FEATURES 1. EQ-LO Turn this clockwise to boost the level of the low-frequency range below 100 Hz. Turn it counter-clockwise to cut the level. In the center position, there is no change in level. The maximum boost and cut is 10 dB at 100 Hz. 2. EQ-HI Turn this clockwise to boost the level of the high-frequency range above 10 kHz. Turn it counter-clockwise to cut the level. In the center position, there is no change in level. The maximum boost and cut is 10 dB at 10 kHz. 3.
4. REAR PANEL FEATURES 6. AC FUSE 11. TEL VOLUME The main AC fuse provides protection if the current draw of the unit is excessive. Make sure that the power cord is unplugged before removing or checking the AC fuse. When you are sure that all is safe, undo the fuse cover with a cross-head screwdriver, taking care not to damage the cover or fuse. Replace the fuse only with the same type and rating as marked on your unit.
13. OUTPUT TERMINALS COM and 25V are used to connect a string of 25V speakers. Use Class II or Class I wiring: This terminal is normally covered by a protective cover. Remove the two screws and the cover while making or undoing connections. Securely refit the cover when you have finished making the connections. DC - 24V + 4 COM The five output terminals are labeled COM, 4 Ω, 25 V, 70 V and 100 V.
15. TELEPHONE PAGING TERMINALS 14. INPUT TERMINALS The Input has a balanced screw terminal connector that accepts an audio line-level mono signal. The screw terminals should be connected as shown in the following figures: Balanced connection: HOT (+) connects to BAL1, Cold (-) connects to BAL 2, and the shield connects to COM. BAL2 COM T R TEL PAGING G Any signals present at these terminals take voice priority over the main input.
5. THERMAL CONSIDERATIONS HOT The power amplifier within the unit is convection cooled rather than fan cooled. Heat is drawn away from the amplifier by the heatsink and radiated through the cooling vents in the top cover. When installing, be sure to allow sufficient air space around the top and rear of the amplifier to allow adequate cooling for the heatsink. Leave at least one rack space above and below, and at least 6 inches behind the chassis to allow proper ventilation.
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8. SPECIFICATIONS Performance Amplifier Power: Frequency Response: Distortion: Noise: 120 W, nominal, 180 W peak (10 mS) 50 Hz–15 kHz ±3 dB < 0.5% THD at 1 kHz nominal power >75 dB Equalization Output: EQ-HI: EQ-LO: ±10 dB at 10 kHz ±10 dB at 100 Hz Audio Inputs Main Input Type: One balanced/unbalanced screw-terminal connectors with switchable input level Main Input Sensitivity: 1 V balanced/0.
9. SERVICE INFORMATION 10. EAW COMMERCIAL WARRANTY In the event that your CXA120 should require servicing, please follow these instructions: 1. Call EAW Commercial Tech Support at 1-888-337-7404, 7 am to 5 pm PST (Monday-Friday), to verify the problem and obtain a Return Authorization (RA) Number. Be sure to have the serial number of the unit when you call. You must have a Return Authorization Number in order to obtain warranty service at the factory or at an authorized service center.
EAW Commercial A LOUD Technologies Inc. Company EAW Commercial | One Main Street | Whitinsville, MA 01588 USA | TEL toll free within US/Canada 888.337.7404 TEL outside US 425.892.6503 | FAX 425.485.1152 | www.eawcommercial.com © 2004 LOUD Technologies Inc. All Rights Reserved.