Yamaha CXS18XLF CXS18XLF CXS15XLF Owners Manual - Page 9

Cardioid Mode Setup Because directivity in the low frequency range is weak, the output sound from the subwoofer diffracts not only toward the audience but also to the stage with almost the same sound pressure. By using the Cardioid mode, bass to the audience is summed up and bass to the stage is canceled. This suppresses the bass volume on the stage, providing greater headroom before feedback, and resulting in more powerful bass for the audience. In order to setup the Cardioid mode, you should process the signals correctly using a processor. Also, the signals from an amplifier to both FRONT and REAR are required. Visit the CXS product page of the Yamaha Pro Audio global website for details on the setting information of the processors for the CXS. Using the [OUTPUT] jack along with a 4-pole speakON cable, you can connect the FRONT signal and REAR signal from a 2-channel amplifier with a single cable. 2-channel amplifier From amplifier 4-pole speakON cable 2+/2-: CARDIOID REAR 1+/1-: CARDIOID FRONT 1+/1-: CARDIOID REAR OUTPUT To next CXS CXS CARDIOID FRONT Routes the signals received via 2+/2- to 1+/1- for output. CXS CARDIOID REAR Troubleshooting Symptom Possible causes Possible solution No sound. The cable is not connected properly. Connect the speakON cable to the [INPUT/PARALLEL] jack correctly. Make sure to connect the amplifier outputs to the 1+/1- contacts of the speakON cable. Sound is interrupted suddenly. The built-in protection system has been enabled because the input volume is excessive. The speaker unit is damaged. To reset (cool down) the protection system, lower the volume of the input device, or stop the input. Wait for 30 seconds or longer. If the unit doesn't automatically reset itself, there is a possibility of malfunction of the speaker unit. If no sound although the connection and signal level are appropriate, there is a possibility of malfunction of the speaker unit. Contact your Yamaha dealer. The amplifier shuts down. When connecting the speakers in parallel, the total impedance of the speakers is less than the minimum load impedance of the amplifier. (For example, when more than three eightohm speakers are connected in parallel to an amplifier having a minimum load impedance of four ohms.) Lower the number of speakers connected in parallel, or use the amplifier which can drive with the total impedance of the speakers, in order to not be less than the minimum load impedance of the amplifier. The protection system of the amplifier has been enabled because the input volume is excessive. Wait until the amplifier cools down. Before using it again, lower the input volume. Sound is distorted. Input volume is excessive. Lower the volume of the input device so that the limit indicator of the amplifier lights only occasionally. If any specific problem should persist, please contact your Yamaha dealer. CXS series Owner's Manual 9