INSTRUCTION MANUAL CXA160 / CXA80 Integrated Amplifiers
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 CXA160 and CXA80 amplifiers are 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 CXA160 has a 160 watt power amplifier, and the CXA80 has 80 watts. Apart from this difference in power output, the two models are identical in details and operation.
3. FRONT PANEL FEATURES 1. EQ-LOW 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 detented center position, there is no change in level. The maximum boost and cut is 12 dB. 2. EQ-HIGH 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 detented center position, there is no change in level. The maximum boost and cut is 12 dB. 3.
4. REAR PANEL FEATURES 10. Input DIP switch 9 10 6 7 8 INPUT CONNECTORS The Input section has four different styles of input connections for line-level audio signals. Choose one which suits your system the best: 6. Combination XLR/TRS connector. This can accept a male balanced XLR connector, a balanced TRS or unbalanced TS 1/4" connector. 7. Phoenix (Euroblock) connector. This three-pin connector accepts the positive, negative and ground terminals of a balanced audio line.
15. Priority DIP switch 14 11 12 15 16 13 PRIORITY CONNECTORS When a signal above –20 dB is detected at the priority input, the main input is muted. This is useful for making announcements, as the music program is then automatically muted. This muting can also be accomplished manually by connecting a user-supplied, normally open, dry contact closure switch to the priority screw terminals.
17 18 21 19 20 22 23 PARALLEL OUTPUT CONNECTORS These outputs allow you to send a copy of the input signals to another amplifier or component in your system. The output is not affected by the volume or EQ controls. There will only be an output here if the Input DIP switch Pin 1 is set in the UP position (see page 5 for details). The output has four different styles of connections. Choose one that suits your system the best: 17. XLR connector. This can accept a female balanced XLR connector. 18.
26 24 HIGH IMPEDANCE If you are using a constant-voltage distributed speaker system, connect either the 25 V, 70 V, or 100 V output terminal to the "+" side of the speaker system, and connect the upper "GND" output terminal to the "–" side of the speaker system. The voltage of your speakers must equal the voltage of the amplifier's output terminal ( 25 V, 70 V, or 100 V). CAUTION: Make sure that you do not overload the amplifier.
GND and 100V are used to connect 100V speakers Use Class II wiring: 0 100V 0 100V 0 The unit seamlessly switches to the backup supply if there's a power loss, allowing safety instructions and emergency communications to continue. When both AC power and 24 VDC power are connected, the AC power is used and no current is drawn from the DC supply. 100V Note: The unit will not charge the battery, so you should have a dedicated charging system.
5. THERMAL CONSIDERATIONS 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 and bottom 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.
AC Line 70V Loudspeakers Backup Battery 24 VDC Line-level output to the input of another CXA160 (for example) Paging Priority Switch AM/FM Tuner or CD Player Paging Microphone 7.
8. SPECIFICATIONS Audio Input and Proximity input Input Type Input Impedance Input Gain Trim Range: Maximum Input Level: Nominal Input Level: Dynamic Range Phantom Power Frequency Response: Total Harmonic Distortion EQ Balanced Differential, Unbalanced 30 kΩ (Bal, Line-In) 2.7 kΩ (Bal, Mic-In) –3 dB to 40 dB (Mic Input) –23 dB to 20 dB (Line Input) +19 dBV 0 dBV 105 dB 24 V 20 Hz - 20 kHz, + 1 dB > 0.
CXA160 / CXA80 – 13 Phoenix Connector Phoenix Connector Screw Terminal Phoenix Connector External Priority Switch (option) XLR/TRS Combo PRIORITY Screw Terminal XLR/TRS Combo INPUT Screw Terminal XLR TRS PARALLEL OUTPUT Parallel Enable DIP 1 High Pass Mic/ Line DIP 3 Mic/ Line DIP 2 Pad Enable (-10 dB) DIP 1 DIP 2 BLOCK DIAGRAM 24V Phantom DIP 3 Trim High Pass DIP 4 DIP 5 Pad Enable (-10 dB) Trim Priority Threshold Detector 24 VDC BACKUP SUPPLY INPUT PRIORITY MASTER VOLUME
9. SERVICE INFORMATION In the event that your CXA160 or CXA80 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.
10. EAW COMMERCIAL WARRANTY Warranty: LOUD Technologies Inc. requires its authorized EAW Commercial distributors to abide by the following warranty terms for all EAW Commercial brand products (all dates are from the date of delivery from an Authorized EAW Commercial Distributor to the end user/installation site): Loudspeakers – 5 years; Active Electronics – 5 years; Accessories – 2 years. What Is Covered: Defects in workmanship and materials and against malfunctions.
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 © 2007 LOUD Technologies Inc. All Rights Reserved.
