User manual YAMAHA EMX88S

[. . . ] Owner's Manual Keep This Manual For Future Reference. E The Owner's Manual Revisions E Thank you for purchasing the Yamaha EMX88S/EMX68S Powered Mixer. Please refer to the following revisions rather than the corresponding sections of the original owner's manual. P. 12 P. 30 MAIN section F Block and Level diagram PA SPEAKERS OUT MAXIMUM OUTPUT [400W/4] NOMINAL OUTPUT [80W/4] +30dB +20dB F Level Meter This LED display shows the level of signals received at the MAIN (STEREO) jack (input/output panel 7). Note: The SPEAKERS 1 & 2 jacks (rear panel 1) output the signals received at the MAIN OUT jack via the internal power amplifier. Check the output signal level via the LIMITER indicator (M). +11dB +4dB +10dB 0dB Power Amplifier output section level diagram (bottom right) MONITOR section K These plots show the nominal output and maximum output levels of signals received at the SPEAKERS jacks. [. . . ] * If TAP DELAY is selected by the PROGRAM selector, this adjusts the amount of feedback. 9 DIGITAL EFFECT ON switch Use this switch to turn the digital effect on and off. When this switch is on, the effect bus signal processed with the built-in digital effect is sent to the stereo (MAIN L, R) bus and MONITOR bus. The mix level of the effect sound is adjusted with the EFFECT RTN control in the MAIN and MONITOR sections. The LED beside the switch will light when the effect is on. B EFFECT RTN control Use this control to adjust the effect signal sent to the stereo (MAIN L, R) bus from the built-in digital effect. C AUX IN control This control adjusts the amount of signal that is sent from the AUX IN jack to the stereo (MAIN L, R) bus. 0 TAP switch Only if the PROGRAM selector has selected TAP DELAY as the internal effect type, you can press this switch to set the desired delay time. Press the TAP switch several times, and the inter- EMX88S/EMX68S--Owner's Manual 12 Front and rear panel D 2TR IN control This adjusts the amount of signal that is sent from the 2TR IN jacks to the stereo (MAIN L, R) bus. These graphic equalizer settings affect both the MONITOR bus signal output to the speakers and the line level signal sent from MONITOR jack signal (input/output panel 7). E MASTER control This control adjusts the stereo (MAIN L, R) bus signal output level. This setting is output to the SPEAKERS A, B, BRIDGE jacks and the MAIN (STEREO) jack (input/output panel 7) on the rear panel and appears in the stereo (MAIN L, R) bus signal. H EFFECT RTN control This control adjusts the effect signal level sent to the MONITOR bus from the built-in digital effect. I 2TR IN control This control adjusts the amount of signal that is sent from the 2TR IN jacks to the MONITOR bus. F Peak level indicator This indicator allows you to monitor the level of the signal which is output from the MAIN (STEREO) jack (input/output panel 7). Note: To avoid distortion, adjust the MASTER control (E) so that the 0 indicator lights occasionally. J MASTER control This control adjusts the MONITOR bus signal output level. This setting is output to both the front and rear panel MONITOR jacks and appears in the MONITOR bus signal. K Peak level indicator This indicator allows you to monitor the level of the signal which is output from the MONITOR jack (input/output panel 7). Note: To avoid distortion, adjust the MASTER control (J) so that the 0 indicator lights occasionally. s MONITOR section This section allows you to adjust the tone and volume of the MONITOR bus, and specify the mix level of the built-in digital effect. G s PHANTOM switch, indicator K L H J L PHANTOM ON, OFF switch I G Graphic equalizer The EMX88S/EMX68S has a 7-band graphic equalizer for adjusting the frequency response of the MONITOR bus signal. This allows you to cut or boost each frequency band by a maximum of ±12dB. You can use these sliders to reduce the level of frequency bands at which feedback easily occurs. Moving a slider in the positive direction will boost, and in the negative direction will cut. EMX88S/EMX68S--Owner's Manual This switch turns the phantom power supply on/ off for the Low-Z XLR type input jacks of channels 1­6 (EMX88S), 1­4 (EMX68S). Turn this switch off if you do not use it. Control panel 13 s POWER AMP section Here you can select the operating mode of the power amp. You can also check the operation of the limiter circuit. s YAMAHA SPEAKER PROCESSING O ON/OFF switch This switch enables you to compensate the low range of the speakers. The low range balance when this switch is on varies depending on the speakers. First, check the low range balance by auditioning the resultant sound, then set this switch to on or off. M N O M LIMITER indicator This indicator lights up when the level of the signal output from the power amp section reaches the maximum and the limiter is activated. Adjust appropriate control so that the indicator lights up for only a short while when the signal reaches the maximum level. Note: The indicator lights up or flashes for a longer duration if the power amp section is significantly overloaded, which could result in malfunction. Avoid such a situation. s STAND-BY P ON/OFF switch This switch mutes (silences) the input signals from channels 1­8 (EMX88S) or channels 1­6 (EMX68S). The on/off setting of this switch does not affect the signal from the AUX IN jacks or 2TR IN jacks. N Power amp select switch Select one of the following settings to specify the signals to be routed to the corresponding jacks according to the speaker connection at the SPEAKERS jacks 1 on the rear panel. · MAIN L-R The stereo (MAIN L, R) bus signals are output from the SPEAKERS A 1, 2 jacks and the SPEAKERS B 1, 2 jacks. The final level of these signals is adjusted by the MAIN MASTER control. [. . . ] However, please check the following three points to prevent The load on the amplifier of this device the problem from recurring. · If the level setting is excessive, lower it to the was too great, and the protection cirnominal level. Possible reasons for the excessive load The POWER · If the device is not ventilated sufficiently, refer to are an excessive level setting in the indicator is lit. the cautions given at the beginning of this manchannel control section or main section, Sound is no ual and take appropriate measures to insure insufficient ventilation, or insufficient longer outadequate ventilation. [. . . ]