Yamaha IM8-24 Owner's Manual - Page 10

Controls and Functions English 0 COMP Control/Indicator Adjusts the amount of compression applied to the channel. As the COMP knob is turned to the right the compression ratio increases while the output gain is automatically adjusted accordingly. The result is smoother, more even dynamics because louder signals are attenuated while the overall level is boosted. The COMP indicator will light when the compressor operates. NOTE · Avoid setting the compression too high, as the higher average output level that results may lead to feedback. A EQ (Equalizer): HIGH, HI-MID, LO-MID, LOW This is a four-band equalizer, providing adjustments for four frequency bands (HIGH, HI-MID, LO-MID, LOW). Setting the gain control to the "▼" position produces a flat response in the corresponding band. Turning the gain control to the right boosts the corresponding frequency band, while turning to the left attenuates the band. The HI-MID and LO-MID bands of monaural channels provide a frequency control that lets you adjust the center frequency. The following table shows the EQ type, frequency, and maximum cut/boost for each of the bands. Monaural channel Band HIGH HI-MID LO-MID LOW Type Shelving Peaking Peaking Shelving Frequency 10 kHz 400 Hz - 8 kHz 80 Hz - 1.6 kHz 100 Hz Maximum Cut/Boost ±15 dB Stereo channel Band HIGH HI-MID LO-MID LOW Type Shelving Peaking Peaking Shelving Frequency 10 kHz 3 kHz 800 Hz 100 Hz Maximum Cut/Boost ±15 dB B EQ ON Switch Switches the equalizer on or off. C AUX Controls (1-8) These adjust the level of the signals sent from the input channel to AUX buses 1-8. These knobs should generally be set close to the "▼" (nominal) position. The signal adjusted by these controls is determined by the PRE switch (D). D PRE Switches For each two buses, these switches select whether the signal sent to the AUX buses will be taken after the equalizer and before the channel fader (pre-fader), or after the channel fader (post-fader). If this switch is ON, the pre-fader signal is sent to the AUX bus, and will not be affected by the channel fader. NOTE · If necessary, the pre-fader signal sent to the AUX buses can be changed to the signal before the equalizer by changing an internal jumper. A fee will be charged for this modification. In this case, the signal will be sent to the AUX buses even if the input channel's ON switch is turned off. For details, contact to your Yamaha dealer listed at the end of this manual. E PAN Control This control determines the stereo positioning of the monaural channel signal on the buses. Rotate the knob clockwise to pan the signal to the odd channels of the GROUP buses and the ST L bus, and counter-clockwise to pan the signal to the even channels of the GROUP buses and the ST R bus. F BAL Control Adjusts the left and right volume balance of stereo channels. The signal input to the INPUT L jack will be sent to the odd channels of the GROUP buses or to the ST L bus, and the signal input to the INPUT R jack will be sent to the even channels of the GROUP buses or to the ST R bus. G ON Switch/Indicator When this switch is on, that channel will be enabled and the indicator will light. NOTE · Even if the ON switch is off, you can turn on the PFL switch (K) and monitor the signal before the channel fader via the MONITOR OUT jacks and the PHONES jack. H Input Meter Three LEDs indicate the input channel signal level after the equalizer. The "-20" LED will light if the input signal level reaches -20 dB, and the "0" LED will light at nominal level. The PEAK LED will light red when the input signal reaches 3 dB before clipping. I Bus Assign Switches These switches determine the bus(es) to which each channel's signal is sent. Turning a switch on will output the signal to the corresponding bus. • 1-2, 3-4, 5-6, 7-8 switches: Assign the channel's signal to the GROUP 1/2-7/8 buses. • ST switch: Assigns the channel's signal to the Stereo L and R buses. • MONO switch: Assigns the channel's signal to the MONO bus. NOTE · If you want the signal to be output to the corresponding bus(es), turn on the channel ON switch (G). J MUTE Switches (1-4) These assign the channel's mute on/off to switches 1-4. If you turn on the MUTE master switches (1-4) (page 15) located in the MUTE MASTER section, the input channels whose corresponding MUTE switch is on will be muted. NOTE · When a channel is muted, the ON indicator (G) will go dark. · Even if a channel is muted, you can turn on the PFL switch (K) and monitor the signal before the channel fader via the MONITOR OUT jacks and the PHONES jack. 10 Owner's Manual