Operating Manual CA SERIES CA-502 CA-504 CA-1.02 CA-1.04 CA-1.52 CA-1.
CA Amplifier • Operating Manual Important Safety Instructions • Consignes de sécurité à lire attentivement 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. Do not use this apparatus near water. Clean only with dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
CA Amplifier • Operating Manual FCC Compliance This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: ■ This device may not cause harmful interference ■ This device must accept any interference received, including interference that may cause undesired operation Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
CA Amplifier • Operating Manual Table of Contents 1 2 3 4 5 6 7 8 1 Introduction Introduction................... 4 Requirements................. 4 2.1 2.2 2.3 2.4 2.5 2.6 AC mains ........................ 4 Input wiring .................... 5 Speaker wire ....................5 Remote control wire ........ 5 Mechanical ..................... 5 Cooling ........................... 6 Amplifier Protection........ 6 Front Panel Features....... 7 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Air vents...............
CA Amplifier • Operating Manual All CA models have a fixed, non-defeatable warm-up delay of two seconds to protect against excessive in-rush current when first powered up. The model number and power consumption are indicated on the back panel label placed near the AC inlet. To reduce the risk of ground loop hum, all sound system ground references should originate at the same AC power distribution point. Do not lift or remove the amplifier power cord ground pin. 2.
CA Amplifier • Operating Manual 2.4 Remote Control Wire • Remote DC level control - Bell or telephone wire is sufficient for DC level control, as well as CAT5 cable. The V+ and Ground pins from one amplifier channel can be shared with other remote DC level controls wired to the same amplifier, however do not connect remote control ground to any external grounds. • Remote Standby - This is a logic level signal, use low gauge wire, shielding is unnecessary. 2.
CA Amplifier • Operating Manual 4 Front Panel Features CA-1.54 shown 4.1 Air Vents Cool air enters in through the amplifier sides and is vented out the front. 4.2 Channel LED Indicators • CLIP/MUTE (red): CLIPPING is indicated when the speaker output reaches 95% (-0.5dB) of maximum power. MUTE is indicated when front panel level or DC level controls are fully attenuated. The Clip/Mute LED is also used with the Protect LED to indicate output DC fault. See the troubleshooting section for LED fault codes.
CA Amplifier • Operating Manual 5 Rear Panel Features CA-1.54 shown 5.1 Standby Connector This Euroblock connector is used for remote contact closure control of amplifier standby status, which places the amplifier into a low power consumption state. A DIP switch sets standby circuit polarity. 5.2 Standby Polarity & Front Panel Disable DIP Switch 5.2a Standby Polarity The Standby Polarity DIP switch sets the polarity requirement for placing the amplifier into standby.
CA Amplifier • Operating Manual (rear panel features continued) • Are output connectors properly wired? Attenuators Don't Work 5.7 Combo Input Jack • Are front panel or remote control attenuators turned down? • Have the front panel controls been disabled using the rear panel DIP switch? • Is the Amplifier in Protect Mode? (see table below) Still Not Working? The combination 1/4" TRS and XLR jack (pin 2 hot) is wired in parallel to the Euroblock input.
CA Amplifier • Operating Manual 7 Specifications General Power Amplifier Specifications (0dBu = 0.775V rms) Amplifier Model CA1.54 Maximum Output Power - in Watts CA1.52 CA1.04 CA1.
CA Amplifier • Operating Manual Specifications (continued) Distortion (SMPTE, typical) Distortion (THD-N, typical, 8 Ohm, 10dB below rated power, 20Hz-20kHz Signal to Noise, 26dB input sensitivity, 20Hz-20kHz, unweighted Frequency Response Channel Separation (dB from full output, 1kHz) Damping Factor (8 Ohm load, <1kHz) Balanced Input Connector (per channel) Input Impedance Maximum Input Level Bridge Mode Switch (per channel pair) Remote DC Level Control (G, CV, V+ per channel) DIP Switch settings (per cha
CA Amplifier • Operating Manual LIMITED WARRANTY (USA ONLY) (Other countries please contact your respective distributor or dealer.) For units purchased in the USA, warranty service for this unit shall be provided by ASHLY AUDIO, INC. in accordance with the following warranty statement. ASHLY AUDIO, INC.
