Allen GL2200+User+guide+AP3388_5电路图.pdf

ALLEN useful for getting the best out of microphones or for tuning out troublesome feedback. The mid bands are overlapping with a Q of 1.6 and can boost or cut in excess of +/- 15dB. The centre flat position is detented for quick resetting. Press EQ IN to switch the EQ into the signal path. 6 AUX SENDS provide feeds for foldback monitors and effects. Aux 1-4 and Aux 5-6 may be set to pre or post-fader using the PRE switch. Monitor sends to the performers are usually set pre-fade (PRE), although some sources such as radio mics are often set post-fade to avoid dressing room talk spill. Effects sends to external signal processing equipment such as reverb and delay effects units, are usually set post-fade so that the amount of effect (wet signal) is always relative to the position of the fader (dry signal). Adjust the amount of effect required for each channel using its AUX control. The effect is returned to the mix through another channel, usually the stereo return described later in this guide. POST-FADE sends are post-EQ, post-mute. PRE-FADE sends are set post-EQ, post-mute as standard. Internal link options are available to change the source of the pre-fade sends. Refer to the internal link options section in this user guide. Note; AUX 1-6 feed XLR outputs with inserts when the GRP/AUX REVERSE switches are pressed in the master section. PAN positions the channel signal within the stereo image or between L-R and the groups when the routing switches are selected. The centre position is detented for quick resetting. MUTE switches the signal off when pressed regardless of fader position. Muted channels are indicated by red LEDs. The channel meter continues to indicate pre- fader channel activity. A 4 LED CHANNEL METER shows signal activity at all times. The green SIG LED indicates signals greater than -20dBu, yellow 0 and +6 represents normal operating level, and red PEAK warns of potential overload 5dB before clipping. Set the channel signal so that the meter averages between 0 and +6. Back the gain off if the red peak LED flashes. Pressing PFL lets you listen to the channel pre-fader signal on headphones without interrupting the main console outputs. The signal level is shown on the L- R bargraph meters. In this way each sound can be correctly lined up and checked at any time. L-R, 1-2, 3-4 routing switches feed the channel signal to the L-R mix and groups 1-2, 3-4. Use the pan control to route to individual groups, i.e. left to route to L, 1, 3 and right to route to R, 2, 4. In this way subgroups may be set up in mono or stereo to feed the main L-R mix. A 100mm FADER provides +10dB boost above the normal 0 operating level. All post-fade aux send levels are dependent on the level of the fader. MF1 EQ MF2 EQ 1-2 3-4 PEAK L-R PFL 0 SIG +6 ODD L 6 AUX AUX 5 AUX 4 AUX 3 2 AUX 1 AUX EVEN R MUTE EQ IN 1 100Hz HF 12kHz -15 0 +15 500Hz 3kHz 15kHz -15 0 +15 MF1 250Hz 35Hz1kHz -15+15 0 MF2 -15+15 0 60Hz LF PRE PAN C 5 5 OO OO+6 OO+6 OO+6 OO+6 OO+6 OO+6 0 0 0 0 0 0 48V PRE 10 20 30 10 0 20- 10 30 60 40 PAD GAIN 30 50 0 PAD -30dB GL2200 USER GUIDE 13 STEREO INPUT CHANNEL Two stereo input channels are included as standard. Each features a 4-band EQ, 6 aux sends and group routing. Use this channel for stereo sources such as keyboards and two track players, or for returning additional effects processors to the mix and monitors. A mic input is included so that you can use the channel for additional mics when needed. The stereo line input can still be routed to the mix while using the channel mic input. The stereo inputs are on separate TRS jacks. For mono line sources plug into the L/MONO jack socket only. For microphone sources plug into the XLR. 48V selects +48V DC to the XLR input for microphones that require phantom power. IMPORTANT NOTE : Switch off channel +48V when non-phantom powered or unbalanced sources are connected to the XLR input. reverses the POLARITY of the input source to correct problems often encountered in microphone placement, or due to incorrectly wired cables (pin 3 hot instead of pin 2). May also be helpful in reducing acoustic feedback between closely positioned loudspeakers and mics in live sound mixing. GAIN controls for the MIC and LINE inputs let you adjust each source independently. LINE TO L-R routes the stereo line source direct to the L-R mix. In this way both the mic and stereo line inputs may be used at the same time. The mic can be routed through the stereo channel while the line input becomes an independent source or return to the LR mix. MIC/LINE selects either the mic XLR or the stereo line jack inputs to the channel. When selecting LINE on the second stereo input channel, the MIC input section is available as the source for talkback. A green LED indicator illuminates to confirm this. The channel can be used with the stereo line input in the normal way while the mic is independently used for talkback. The 4-band stereo EQ lets you adjust the tonal quality of the sound. The HF (treble) and LF (bass) bands have a shelving response, which means that all frequencies beyond the corner frequency are affected. The 2 mid frequencies MF1 and MF2 provide optimum control over boomy or boxy sounds (250Hz), and can add bite or reduce harshness to keyboards, vocals etc. (2.5kHz). The centre flat position is detented for quick resetting. 6 AUX SENDS provide feeds for foldback monitors and effects. Aux 1-4 and Aux 5-6 may be set to pre or post-fader using the PRE switch. The left and right stereo signals are summed to provide aux feeds in mono. Monitor sends to the performers are usually set pre-fade (PRE), although some sources such as radio mics are often set post-fade to avoid dressing room talk spill. Effects sends to external signal processing equipment such as reverb and delay effects units, are usually set post-fade so that the amount of effect (wet signal) is always relative to the position of the fader (dry signal). Adjust the amount of effect required for each channel using its AUX control. The effect is returned to the mix through another channel, usually the stereo return described later in this guide. POST-FADE sends are post-EQ, post-mute. PRE-FADE sends are set post- EQ, post-mute as standard. Internal link options are available to change the source of the pre-fade sends. Refer to the internal link options section in this user guide. Note; AUX 1-6 feed XLR outputs with inserts when the GRP/AUX REVERSE switches are pressed in the master section. MIC TO TALK ENABLE MIC TO TALK STEREO 15-16 60dB LINE 50 L-R 20 10 30 40 TO MIC LINE GAIN 12 48V MIC GAIN LINE 250Hz MF2 2.5kHz MF1 +15-15 0 +15-15 0 +15-15 0 +15-15 0 EQ IN HF 12kHz 60Hz LF +6OO 0 +6OO 0 +6OO 0 +6OO 0 +6OO 0 +6OO 0 6 AUX AUX 5 AUX 4 AUX 3 2 AUX 1 AUX PRE PRE MUTE ODD L EVEN R C PEAK 0 SIG +6 L-R BAL PFL 5 5 10 0 1-2 3-4 OO 10 20 30 OO20 10 0 GL2200 USER GUIDE 14 BAL positions the channel signal within the stereo image or between L-R and the groups when the routing switches are selected. The centre position is detented for quick resetting. MUTE switches the signal off when pressed regardless of fader position. Muted channels are indicated by red LEDs. The meter continues to indicate pre-fader channel activity. A 4 LED CHANNEL METER shows signal activity. The green SIG LED indicates signals greater than -20dBu, yellow 0 and +6 represents normal operating level, and red PEAK warns of potential overload 5dB before clipping. Set the channel signal so that the meter averages between 0 and +6. Back the gain off if the red peak LED flashes. Pressing PFL lets you listen to the channel pre-fader signal on headphones without interrupting the main console outputs. The signal level is shown on the L-R bargraph meters. In this way each sound can be correctly lined up and checked at any time. L-R, 1-2, 3-4 routing switches feed the channel signal to L-R mix and groups 1-2, 3-4. Use the pan control to route to individual groups, ie left to route to L, 1, 3 and right to route to R, 2, 4. In this way subgroups may be set up in mono or stereo to feed the main L-R mix. A 100mm FADER provides +10dB boost above the normal 0 operating level. All post-fade aux send levels are dependent on the level of the fader. MIC TO TALK ENABLE MIC TO TALK STEREO 15-16 60dB LINE 50 L-R 20 10 30 40 TO MIC LINE GAIN 12 48V MIC GAIN LINE 250Hz MF2 2.5kHz MF1 +15-15 0 +15-15 0 +15-15 0 +15-15 0 EQ IN HF 12kHz 60Hz LF +6OO 0 +6OO 0 +6OO 0 +6OO 0 +6OO 0 +6OO 0 6 AUX AUX 5 AUX 4 AUX 3 2 AUX 1 AUX PRE PRE MUTE ODD L EVEN R C PEAK 0 SIG +6 L-R BAL PFL 5 5 10 0 1-2 3-4 OO 10 20 30 OO20 10 0 TALKBACK SIGNAL LINE TO L-R AUX 5 POST PRE AUX 6 POST PRE AUX 4 AUX 3 INTERNAL AUX LINK OPTIONS EQ IN TO OSC/TALKBACK LINE + + L/MONO R LINE LEV LF MF2 L R + MIC IN +48V 2= + GAIN ENABLE (LAST STEREO ONLY) MIC/ EQUALISER MF1 HF 4-BAND MIC TO TALK MUTE BAL L-R PRE PRE-MUTE POST-FADE SWITCHED PRE-FADE PRE-EQ SUM AUX 2 AUX 1 SUM POST-MUTEPOST-EQ POST + 3-4 1-2 CHANNELx2 FADER SIG +6dB 0dB PFL STEREO PEAK P/AFL LEFT RIGHT AUX 1-6 GRP 1-4 The stereo input diagram showing the talkback and stereo line signal routing. GL2200 USER GUIDE 15 STEREO RETURNS Two stereo return inputs are provided with 2-band EQ, sends to auxes 1 & 2 and routing to L-R mix or groups 1-2/3-4. These are normally used to return the effects (wet) signal, usually from a stereo device, to the mix. They can also be used for additional line inputs to the mix. A 2 band EQ provides HF and LF control with 15dB cut and boost at 12kHz and 80Hz respectively. This is often used to remove unwanted high or low frequency noise from effects devices. 2 aux sends are provided to feed a summed left and right pre-fade post mute signal to auxes 1 & 2. This is ideal for returning effects to the monitors without using up valuable channel inputs. The BAL control adjusts the balance between left and right signals, or can be used as a pan control to route the signal to one side only by rotating fully. MUTE switches the signal off when pressed regardless of fader position. Muted Returns are indicated by red LEDs. Mute does affect the pre-fade aux sends. Pressing PFL lets you listen to the channel pre-fader signal on headphones without interrupting the main console outputs. The signal level is shown on the L-R bargraph meters. In this way each sound can be correctly lined up and checked at any time. L-R/1-2 (3-4) ROUTING SWITCHES - In the up position the signal is routed to the main L-R mix but may be returned to the corresponding pairs of subgroups for group effects (1-2 or 3-4). A smooth travel 60mm FADER provides precise control of the level. AUX OUTPUTS AUX MASTERS Each aux mix has a master level control that adjusts the output level to match external equipment, or to trim the monitor or effects level without affecting the mix balance. Up to +10dB of boost is available above the nominal 0 position. Auxiliary outputs are on 3-wire impedance balanced 1/4” TRS jacks. AFL (After Fade Listen) routes the post mix signal to the console meters and headphone monitoring to allow checks for sound quality and mix level. If MODE SWITCHING aux/groups reverse is in operation, aux master level controls are connected to the corresponding group busses (Group 1 to Aux Master 1, etc.). Refer to MODE SWITCHING section on page 17 for more information +15-15 +15-15 0 1 AUX +6OO 0 2 AUX +6OO 0 ODD LR EVEN BAL MUTE L-R 1-2 30 20 10 0 5 5 12kHz HF PFL 60Hz LF OO 10 RETURN STEREO 1 AUX 2 AUX 3 AUX 4 AUX 5 AUX 6 AUX OO+10 0 OO+10 0 OO+10 0 OO+10 0 OO+10 0 OO+10 0 AFLAFLAFLAFLAFLAFL GRP/AUX 1-2 REVERSE GRP/AUX 3-4 REVERSE L-R/AUX 5-6 REVERSE FOH STAGE MONITOR GL2200 USER GUIDE 16 GROUP OUTPUTS GROUPS Group outputs are controlled by 100mm travel faders which offer a further 10dB boost above the normal 0 dB operating level. MUTE switches the group signal off when pressed regardless of fader position. Muted channels are indicated by red LEDs. AFL (After Fade Listen) routes the post fader signal to the console meters and headphone monitoring to allow checks for sound quality and mix level. The AFL signal is sourced before the MUTE switch allowing the signal to be checked even when the group is muted. Each group has a 4 segment LED peak reading meter providing signal presence indication and peak warning which illuminates approximately 5dB before clipping. Meter activity is interrupted when a group is muted. SUB GROUPING Sometimes it is necessary to control more than one channel simultaneously, in the case of a drum kit or a group of backing vocalists for example. Route the relevant channels to groups instead of L-R, using the channel routing switches and the pan controls. PAN control positions the signal in the stereo image with the L-R switch routing the group mix to the Left & Right masters. Ensure the group L-R switch is selected to route the group signal to the L-R mix. In this way, one group fader can control the level of several channels. It is possible to set up mono or stereo subgroups using the channel and group PAN controls. PEAK 0 SIG +6 PEAK 0 SIG +6 AUX1AUX2 12 PAN L-R 21 CC MUTEMUTE AFLAFL GRP/AUX 1-2 REVERSE PAN L-R LRLR OO 20 30 10 5 0 5 10 OO 20 30 10 5 0 5 10 AFL GROUP MIX SL AUX MIX SL GROUP4 AUX4 PANL-R (R CCT ONLY) R POST TO MONITOR (GROUP CCTS ONLY) SUBGROUPING GROUP/RIGHTAFL -2dBu INSERT MUTE - - FADER AUX - PEAK BAL + SIG +6dB 0dB GROUP2 +4dBu 2 = + AUXAUX BAL OUT OPTION + BAL OUTGRP AUX2 RIGHT AUX GRPGRP AUX6 GROUP MIX SL AUX MIX SL GROUP3 AUX3 +6dB (GROUP CCTS ONLY) AUX1-2, AUX3-4, AUX5-6 GROUP1-2, GROUP3-4, L-R SUBGROUPING GROUP/AUX REVERSE SAME FOR INSERT -2dBu MUTE - PAN FADER (L CCT ONLY) TO MONITOR L POST REV 1-2 + L-R SIG 0dB BAL 2 = + +4dBu GROUP1 AUXAUX AFL GROUP/LEFT AUX AFL - BAL OUT OPTION PEAK BAL + OUTGRP AUX1 REV REV 3-4 L-R 5-6 LEFT AUX GRPGRP AUX5 GRP 1-4 AUX 1-6 P/AFL RIGHT LEFT Group / Aux diagram GL2200 USER GUIDE 17 MODE SWITCHING The GL2200 features a set of GROUP/AUX REVERSE (REV) switches, which can transpose the AUX and GROUP controls in pairs. These switches are recessed to avoid accidental operation. Set using a pointed object or a pen tip. This feature allows you to set the operation of the console for Front Of House, Stage monitor or a combination of both (Dual mode). With the switches out, the groups operate in the conventional manner, channel grouping using the channel routing switches. When the REVERSE switches are pressed in, the group busses are routed to the AUX send masters and the aux busses are routed to the GROUPS (Aux 1 to Group 1, etc). Aux 5 & 6 are routed to L-R faders respectively. This configuration allows the user to control up to six monitor mix levels on faders. Outputs are on balanced XLRs for long cable runs and a signal processor (equaliser, compressor, limiter, etc.) can be inserted into the signal path using the group and left/right INSERT jacks. The L-R and group busses are still operational but are now routed to the aux master contro