User manual YAMAHA DSR2000E

[. . . ] 8 Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9 Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. [. . . ] · Always consult qualified Yamaha service personnel if the device installation requires construction work, and make sure to observe the following precautions. - Choose mounting hardware and an installation location that can support the weight of the device. - Avoid locations that are exposed to constant vibration. - Inspect the device periodically. 1/2 4 DSR112/DSR115/DSR215/DSR118W Owner's Manual · Do not expose the device to excessive dust or vibrations, or extreme cold or heat (such as in direct sunlight, near a heater, or in a car during the day) to prevent the possibility of panel disfiguration or damage to the internal components. · Do not place the device in an unstable position where it might accidentally fall over. Connections · Before connecting the device to other devices, turn off the power for all devices. Before turning the power on or off for all devices, set all volume levels to minimum. Handling caution · When turning on the AC power in your audio system, always turn on the device LAST, to avoid speaker damage. When turning the power off, the device should be turned off FIRST for the same reason. · Condensation can occur in the device due to rapid, drastic changes in ambient temperature--when the device is moved from one location to another, or air conditioning is turned on or off, for example. Using the device while condensation is present can cause damage. If there is reason to believe that condensation might have occurred, leave the device for several hours without turning on the power until the condensation has completely dried out. · Avoid inserting or dropping foreign objects (paper, plastic, metal, etc. ) into any gaps or openings on the device. · If the output voltage of the amplifier has exceeded the maximum value · If excessive integral power consumption is detected · If the amplifier overheats NOTE You may use either the XLR or the phone jack, but not both types simultaneously. Please connect to only one of these jacks. THRU jack(s) These are balanced XLR output jack(s). Input signals will be passed through unaffected, since these are parallel connected to the INPUT jacks. · The integral power consumption refers to the sum of power consumption provided to the speaker driver per unit time. PEAK Indicator Lights red when the input level reaches 3dB below clipping. If the PEAK indictor frequently lights, adjust the volume of the input source so that the PEAK indictor flashes briefly on the highest input levels. · (DSR112/DSR115/DSR215) If the output voltage of the amplifier has exceeded the maximum value, or if excessive integral power consumption is detected, the LIMIT indicator will light when the amount of attenuation is 3dB or higher. PROTECTION indicator Lights when the protection system is active. The protection system will operate in the following situations. NOTE LEVEL control Adjusts the overall output level. Set the MIC/LINE switch ( ) of the DSR112, DSR115 and DSR215 to LINE when connecting a device (such as a mixer) whose specified output level is +4dBu. In this condition, set the LEVEL control to roughly a 12:00 position to obtain sufficient output. If the protection system has engaged after the problem was detected, waiting until the amplifier cools down or powering off and on again will return to normal operation. If the unit does not return to normal operation, please contact your Yamaha dealer. MIC/LINE switch (DSR112/DSR115/DSR215) Set this switch to MIC or LINE for INPUT jacks, depending on the level of the input signal. For low-level signals (such as microphones), set the switch to the MIC ( ) position. For highlevel signals (such as electronic musical instruments and audio equipment), set the switch to the LINE ( ) position. · If amplifier overheating is detected: The speaker output will be muted. · If DC output is detected: After the indicator lights, the speaker output will be muted, and the power supply section will be shut down. [. . . ] Otherwise, the sounds from each speaker may cancel each other, resulting in diminished sound pressure. 4. Stage monitor system As necessary, connect speakers in parallel. NOTE We recommend that the HPF switch is set to on ( ) to reduce feedback when using as a vocal stage monitor. NEXT 5. SR system with microphone only (microphone direct input) This example illustrates an SR system setup using one 2-way speaker connected directly with a microphone. This system can be used in a wide range of places such as corporate events, presentations, and restaurants. [. . . ]