User manual SOUNDCRAFT LX7II

[. . . ] User Guide 1 IMPORTANT Please read this manual carefully before using your mixer for the first time. © Harman International Industries Ltd. 2003 All rights reserved Parts of the design of this product may be protected by worldwide patents. ZM0288 Issue: 1 Soundcraft is a trading division of Harman International Industries Ltd. Information in this manual is subject to change without notice and does not represent a commitment on the part of the vendor. [. . . ] If feedback persists, it may be necessary to use a Graphic Equaliser to reduce the system response at particular resonant frequencies. Note: The initial settings should only be regarded as a starting point for your mix. It is important to remember that many factors affect the sound during a live performance, for instance the channel EQ settings or even the size of the audience!You are now ready to start building the mix and this should be done progressively, listening carefully for each component in the mix and watching the meters for any hint of overload. If this occurs, back off the appropriate Channel Fader slightly until the level is out of the red segments, or adjust the Mix Master Faders. This procedure will ensure that the mixer is set up correctly, with adequate headroom. If more amplification is needed, adjust the power amplifier level controls. Troubleshooting Po No Power Is the mains supply present?Check the mains fusing If only one of the power indicators is illuminated, consult your Soundcraft dealer No Wor orking Condenser Mic Not Working Is the 48V turned on?Is the mic cable a balanced 3-wire type? 14 Meters not showing any Meters not showing any signal Has the input gain been set correctly?(see above. ) Is the source connected to the appropriate input socket for the level of signal?Do you have something connecetd on the Inserts, and is that external device switched on?Are the Master faders set at max. , are input faders set high enough and is the channel routed to the output being monitored?Is there a PFL/AFL pressed on another channel? No Mix output Check that the Mix Master Fader is up?Check that the 2TK REPLACES MIX switch is released? Monitor No Monitor output Is a headphone jack plugged in?Is the appropriate monitor select switch pressed? Distorting Headphones Distorting Are the headphones less than 200 impedance?Is the Monitor + Phones level set too high? 15 Connecting Leads 16 'Y' Leads (Balanced) Balanced Unbalanced Headphone Splitter 'Y' Leads (Unbalanced) Insert Leads Audio Connector Pinouts 17 Dimensions 18 BLOCK DIAGRAM 19 20 USING THE CONSOLE 21 Overview A 16 channel frame is shown. 22 Mono Input Channel 1 - MIC INPUT The mic input accepts XLR-type connectors and is designed to suit a wide range of BALANCED or UNBALANCED signals. Professional dynamic, condenser or ribbon mics are best because these will be LOW IMPEDANCE. You can use low-cost HIGH IMPEDANCE mics, but the level of background noise will be higher. If you press the 48V switch down the socket provides a suitable powering voltage for professional condenser mics (this is also known as Phantom Power). ONLY connect condenser microphones with the 48V powering OFF (switch UP), and ONLY turn the 48V powering on or off with all output faders DOWN, to prevent damage to the mixer or external devices. TAKE CARE when using unbalanced sources, which may be damaged by the phantom power voltage on pins 2 & 3 of the XLR connector. Unplug any mics if you want to use the LINE Input. The input level is set using the GAIN knob. (Phantom Po 2 - 48V (Phantom Power) Many professional condenser mics need an external powering voltage, normally 48V, also known as PHANTOM POWER. This is a method of sending a powering voltage down the same wires as the mic signal. [. . . ] When you release the switch the Monitor swaps back to the previous source. POWER INDICA 2 - POWER INDICATORS These LEDs light to show that power is connected to the console and that the internal power supply is operating correctly. BARGRAPH 3 - BARGRAPH METERS 3-colour peak reading BARGRAPH METERS are provided to monitor the four Subgroup outputs and the selected Monitor + Phones source (2TK, C (mono), Mix or Groups), giving you a constant warning of excessive peaks in the signal which might cause overloading. Aim to keep the signal within the amber segments at peak levels for best performance. Similarly, if the output level is too low and hardly registering at all on the meters, the level of background noise may become significant. When any PFL or AFL switch is pressed, the L & R meters automatically switch to show the selected PFL/AFL signal on both meters, in mono. 4 - MIX Pressing the Mix switch routes the post-fade Subgroup signals in pairs to the main Mix. [. . . ]