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MIXING CONSOLE Owner’s Manual Keep This Manual For Future Reference. E  WARNING: THIS APPARATUS MUST BE EARTHED IMPORTANT THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE: GREEN-AND-YELLOW : EARTH BLUE : NEUTRAL BROWN : LIVE As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The wire which is coloured GREEN and YELLOW must be connected to the terminal in the plug which is marked by the letter E or by the safety earth symbol or coloured GREEN and YELLOW. The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK. The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED. * This applies only to products distributed by YAMAHA KEMBLE MUSIC (U.K.) LTD.  Precautions 3 Precautions Warnings Cautions • Do not allow water to enter this unit or allow the unit to become wet. Fire or electrical shock may result. • Connect this unit’s power cord only to an AC outlet of the type stated in this Owner’s Manual or as marked on the unit. Failure to do so is a fire and electrical shock hazard. • Do not scratch, bend, twist, pull, or heat the power cord. A damaged power cord is a fire and electrical shock hazard. • Do not place heavy objects, including this unit, on top of the power cord. A damaged power cord is a fire and electrical shock hazard. In particular, be careful not to place heavy objects on a power cord covered by a carpet. • If you notice any abnormality, such as smoke, odor, or noise, or if a foreign object or liquid gets inside the unit, turn it off immediately. Remove the power cord from the AC outlet. Consult your dealer for repair. Using the unit in this condition is a fire and electrical shock hazard. • Should this unit be dropped or the cabinet be damaged, turn the power switch off, remove the power plug from the AC outlet, and contact your dealer. If you continue using the unit without heeding this instruction, fire or electrical shock may result. • If the power cord is damaged (i.e., cut or a bare wire is exposed), ask your dealer for a replacement. Using the unit with a damaged power cord is a fire and electrical shock hazard. • Do not remove the unit’s cover. You could receive an electrical shock. If you think internal inspection, maintenance, or repair is necessary, contact your dealer. • Do not modify the unit. Doing so is a fire and electrical shock hazard. • This unit has ventilation holes at the top and right side to prevent the internal temperature rising too high. Do not block them. Blocked ventilation holes are a fire hazard. • Hold the power cord plug when disconnecting it from an AC outlet. Never pull the cord. A damaged power cord is a potential fire and electrical shock hazard. • Do not touch the power plug with wet hands. Doing so is a potential electrical shock hazard. Operating Notes • Using a mobile telephone near this unit may induce noise. If noise occurs, use the telephone away from the unit. • XLR-type connectors are wired as follows: pin 1: ground, pin 2: hot (+), and pin 3: cold (–). • Insert TRS phone jacks are wired as follows: sleeve: ground, tip: send, and ring: return. • The performance of components with moving contacts, such switches, rotary controls, faders, and connectors, deteriorates over time. The rate of deterioration depends on the operating environment and is unavoidable. Consult your dealer about replacing defective components. —Owner’s Manual  4 Introduction Introduction Thank you for purchasing the Yamaha GF24/12, GF16/12, or GF12/12 mixing console. These mixers provide an ample twelve outputs, and are suitable for a wide variety of applications ranging from concert sound reinforcement to installed systems. In order to take full advantage of the mixer’s functionality and to enjoy years of trouble-free performance, please read this manual carefully. Note: • This owner’s manual assumes that you are familiar with basic operation of a mixing console and its specialized vocabulary. • At points where the specifications of the GF24/12, GF16/12, and GF12/12 differ, the specifications of the GF16/12 and GF12/12 are given in curly brackets { }. Features of the system • In addition to the main stereo outputs, this mixer provides six AUX outputs plus four group outputs (a total of 12 outputs). The AUX/GROUP outputs can be used not only as sends to external effect processors or to a multitrack recorder, but are also ideal for creating separate foldback mixes for each speaker and amp. • The MONO OUT jack can be controlled independently from the STEREO OUT jacks. Since a monaural mix of the main output is sent from this output, it can be used to extend a PA system. • All input channels provide a high-pass filter, a three-band EQ, and 60 mm faders. • All input channels/AUX returns provide a PFL switch, and AUX/group/stereo output channels provide an AFL switch. You can audition input and output sources at the touch of a button. • All mono input channels provide balanced XLR type and TRS phone jack connectors that accommodate a range of sources from mics to line level devices. • Switchable phantom power is provided. This can supply DC +48 V power from the XLR type input connectors to condenser mics and direct boxes that require an external power supply. • Two stereo input channels allow connection of line-level equipment. 1/4" phone jack and phono jack inputs can be selected by a switch. • Two stereo AUX returns are provided. This allows AUX return signals to be sent to an AUX bus or GROUP bus as well as to the ST bus. These can also be used as spare line level input jacks. —Owner’s Manual • An insert I/O jack is provided on each mono input channel and on the ST bus, allowing you to insert external effect processors as desired. • The TAPE IN jacks and REC OUT jacks let you easily connect a master recorder for recording or playback. Contents Front and rear panel ....................... 5 Channel controls ..................................6 Master controls ..................................10 Connectors ........................................17 Specifications................................ 21 General specifications.........................21 Input specifications ............................22 Output specifications .........................22 Dimensions ........................................23 Block/Level Diagram ..........................24  Front and rear panel 5 Front and rear panel This section explains the names and functions of each section of the GF24/12, GF16/12, and GF12/12. The functionality of these mixers is grouped into ten sections. These are the two channel control sections, seven master control sections, and the rear panel connectors. Their functions will be explained sequentially. Front panel 6 7 9 POWER 1 2 3 26dB GAIN 26dB GAIN –34 –60 +10 –15 7 26dB GAIN –34 –60 +10 –15 80 HIGH HIGH HIGH GAIN –34 –60 +10 –15 HIGH HIGH GAIN –34 –60 +10 –15 HIGH HIGH HIGH GAIN –34 –60 +10 –15 80 PEAK HIGH –34 1 –34 GROUP 0 10 0 10 3 0 10 0 10 30 10 80 PEAK HIGH HIGH GROUP +10 80 PEAK PEAK HIGH A B GAIN +10 80 PEAK 2 HIGH 4 AUX PEAK +8 +5 +3 +1 0 –1 –3 –5 –7 –10 –15 –20 PEAK +8 +5 +3 +1 0 –1 –3 –5 –7 –10 –15 –20 23/24 A B 26dB GAIN –34 –60 +10 –15 80 PEAK HIGH 26dB GAIN –34 –60 +10 –15 80 PEAK 21/22 20 26dB GAIN –34 –60 +10 –15 80 PEAK 19 26dB GAIN 80 PEAK 18 26dB –34 –60 +10 –15 80 PEAK 17 26dB GAIN –34 –60 +10 –15 80 PEAK 11 26dB GAIN 80 PEAK 10 26dB –34 –60 +10 –15 80 PEAK 9 26dB GAIN –34 –60 +10 –15 80 PEAK 8 26dB GAIN –34 –60 +10 –15 80 PEAK HIGH 6 26dB GAIN –34 –60 +10 –15 80 PEAK HIGH 5 26dB GAIN –34 –60 +10 –15 80 PEAK HIGH 4 AUX L R L STEREO –15 +15 MID –15 +15 MID 250 5K –15 +15 MID 250 5K –15 +15 –15 MID 250 5K +15 MID 250 5K –15 +15 –15 MID 250 5K +15 MID 250 5K –15 +15 –15 MID 250 5K +15 MID 250 5K –15 +15 –15 MID 250 5K +15 –15 MID 250 5K +15 MID 250 5K –15 +15 MID 250 5K –15 +15 MID 250 5K –15 +15 –15 +15 –15 +15 –15 +15 LOW –15 +15 –15 +15 LOW –15 AUX +15 –15 +15 –15 LOW –15 AUX +15 +15 LOW –15 +15 AUX –15 +15 –15 LOW –15 AUX +15 +15 LOW –15 AUX +15 –15 +15 –15 LOW –15 AUX +15 +15 LOW –15 AUX +15 –15 +15 –15 LOW –15 +15 AUX +15 –15 LOW –15 +15 AUX +15 LOW –15 +15 AUX –15 250 +15 LOW –15 +15 AUX 5K –15 250 +15 LOW –15 +15 AUX 10 +15 2 5K MID LOW –15 10 10 40 10 1 –15 +15 –15 +15 LOW –15 AUX MID +15 LOW –15 +15 AUX 0 ST –15 ST +15 0 0 10 10 0 PRE 0 10 0 10 1 PRE 0 10 0 10 1 PRE 0 10 0 10 1 PRE 0 10 0 10 1 PRE 0 10 0 10 1 PRE 0 10 0 10 1 PRE 0 10 0 10 1 PRE 0 10 0 10 1 PRE 0 10 0 10 1 PRE 0 10 0 10 1 PRE 0 10 0 10 PRE 1 0 10 0 10 1 PRE 0 10 0 10 1 PRE 0 10 0 10 1 +15 –15 AUX PRE 0 10 0 10 1 10 LOW –15 AUX +15 PFL AUX ON PFL 1 AUX RETURN 2 1 R PFL•AFL/TAPE IN PHANTOM 3 4 2 MID PRE 0 10 0 10 1 TAPE IN MIXING CONSOLE PRE 0 10 0 10 PHANTOM +48V 2 3 PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 PRE 3 0 10 0 10 5 0 10 6 0 10 4 PRE 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 PRE PRE 0 10 0 10 5 0 10 6 0 10 4 2 3 10 0 10 5 0 10 6 0 10 4 PRE 10 10 10 10 10 5 5 5 5 5 5 0 0 0 0 0 0 5 5 5 5 5 5 10 10 10 10 10 10 OFF PRE 0 10 15 20 30 40 PRE 15 20 30 40 15 20 30 40 AFL PAN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN PAN L ODD R EVEN BAL L ODD R EVEN L ODD R EVEN R EVEN R AUX 4 PAN L R AUX 5 R STEREO PFL•AFL GROUP AFL TAPE IN AUX 6 MONO PAN L 15 20 30 40 AFL AFL AUX 3 PAN L AFL AUX 2 PAN L ODD 15 20 30 40 15 20 30 40 AFL AUX 1 BAL ON METER SELECT L R 0 0 10 10 C-R MONITOR LEVEL ON ON 10 ON 10 1–2 ON 10 1–2 ON 10 1–2 ON 10 1–2 ON 10 1–2 ON 10 1–2 ON 10 1–2 ON 10 1–2 ON 10 1–2 ON 10 1–2 ON 10 1–2 ON 10 1–2 ON 10 1–2 ON 10 1–2 TO ST ON 10 1–2 10 1–2 TO ST TO ST POST TO ST 10 10 10 10 10 5 5 5 5 5 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 3–4 0 0 0 0 0 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 ST 5 5 5 5 5 5 5 10 5 10 15 20 30 40 10 15 20 30 40 PFL 1 5 2 10 15 20 30 40 PFL 5 10 15 20 30 40 PFL 3 5 10 15 20 30 40 PFL 6 5 10 15 20 30 40 PFL 5 5 10 15 20 30 40 PFL 4 5 10 15 20 30 40 PFL 9 5 10 15 20 30 40 PFL 8 5 10 15 20 30 40 PFL 7 5 10 15 20 30 40 PFL 10 5 10 15 20 30 40 PFL 17 5 10 15 20 30 40 PFL 18 5 10 15 20 30 40 PFL 11 5 19 5 10 15 20 30 40 PFL 1 10 15 20 30 40 15 20 30 40 PFL 21/22 20 10 10 15 20 30 40 PFL 0 PFL 23/24 GROUP 1 10 15 20 30 40 AFL 10 15 20 30 40 AFL GROUP 2 GROUP 3 15 20 30 40 AFL GROUP 4 3 2 10 15 20 30 40 AFL 10 PHONES LEVEL 1–2 PHONES AFL STEREO 4 5 8 Channel controls Master controls 1. Mono input channels (page 6) 2. Stereo input channels (page 8) 3. GROUP section (page 10) 4. AUX section (page 11) 5. STEREO/MONO section (page 12) 6. AUX RETURN section (page 13) 7. TAPE IN section (page 14) 8. Other controls/connectors (page 14) 9. Meter section (page 16) Rear panel Connectors (page 17) INSERT I/O C-R OUT +4dB R POWER ON/ OFF ST INSERT I/O 0dB L R 4 3 6 5 GROUP OUT +4dB 2 AUX RETURN +4dB L 2L 2R 1 1R 23L AUX OUT +4dB (BALANCE) 4 3 OUT IN 1L (MONO) 2 INPUT B 21L 24R 1 INSERT I/O 0dB INSERT I/O 0dB INSERT I/O 0dB INPUT INPUT INPUT B B B 22R TAPE IN –10dBV 23L R MONO OUT +4dBV L STEREO OUT +4dBV R L REC OUT –10dBV (MONO) 24R 21L 22R INPUT A INPUT A INPUT A INPUT A —Owner’s Manual  6 Front and rear panel Channel controls ■ Mono input channels 26dB GAIN –34 –60 +10 –16 2 3 80 4 1 PEAK Here are the 20 {12, 8} mono input channels of the GF24/12 {GF16/12, GF12/12}. The input channel section processes the signal from the input jacks of the connector section, and sends the result to the GROUP buses, AUX buses, and the ST bus. 1 Pad switch HIGH –15 This attenuates the input signal by 26 dB. The pad is on when this switch is pressed in. +15 MID 2 GAIN control 250 5K –15 +15 5 LOW –15 3 High pass filter switch +15 AUX 1 10 0 10 0 10 0 10 5 0 10 6 0 10 2 6 3 4 This is an on/off switch for the high pass filter that cuts the frequency range below 80 Hz at a slope of 12 dB/octave. The high pass filter is on when the switch is pressed in. PRE 0 This adjusts the input sensitivity. The range of levels that can be accommodated is –16 dB to –60 dB when the pad switch (1) is off, and +10 dB to –34 dB when the pad switch is on. 4 PEAK indicator PRE 7 PRE This is an indicator that detects post-EQ clipping. It will light 3 dB before clipping, indicating that the signal is near the clipping level. If this LED lights, lower the GAIN control (2). 5 EQ controls (HIGH/MID/LOW) This is a three-band equalizer that boosts/cuts each frequency band over a ± 15 dB range. The center frequency and equalizer type for each band is shown below. PAN 8 L ODD R EVEN Band Center frequency Type HIGH 10 kHz shelving MID 250 Hz–5 kHz peaking LOW 100 Hz shelving 9 ON 10 1–2 0 5 0 3–4 A 5 ST 6 AUX controls (1–6) 10 15 20 30 40 The response is flat when the knob is in the “▼” position. B PFL C —Owner’s Manual These knobs adjust the level at which the input channel signal is sent to the AUX buses 1–6. AUX controls 1 and 2 are fixed at pre-fader, and AUX controls 3–6 can be switched between pre/post fader using the PRE switch (7). When a knob is in the “√” position, the level is “nominal”.  Channel controls 7 PRE switches 7 0 Group select switches These switches select whether the pre or post fader signal will be sent to AUX buses 3–6. This setting is switched in pairs: AUX 3/4 and 5/6. When the switch is pressed in, the pre-fader signal will be sent to the corresponding pair of AUX buses. When the switch is in the out (up) position, the post-fader signal will be sent. These switches send the signal of the input channel to GROUP buses 1–4. When the 1–2 switch is on (pressed in) the signal will be sent to GROUP bus 1/2. When the 3–4 switch is on, the signal will be sent to GROUP bus 3/4. A ST (stereo) switch This switch sends the signal of the input channel to the ST bus. When this switch is on, the signal will be sent to the ST bus. 8 PAN control This adjusts the left/right position at which the input channel signal will be sent to the ST (stereo) bus, GROUP bus 1/2, and GROUP bus 3/4. B PFL (pre-fader listen) switch This switch sends the pre-fader signal to the PFL/ AFL bus, allowing you to monitor it through headphones or monitor speakers. When this switch is on, the pre-fader signal of the input channel can be heard from the C-R OUT jacks and the PHONES jack, even if the ON switch (9) is off. 9 ON switch This switches the input channel on/off. When this switch is turned off, the signal of the input channel will not be sent to the ST bus, GROUP buses, or AUX buses. However even if this switch is off, you can use the PFL switch (B) to monitor the signal from the C-R OUT jacks or the PHONES jack. C Channel fader This fader adjusts the input level of the input channel. The position of the channel fader will affect the level of the signal that is output from the ST bus, GROUP buses 1–4, and AUX buses 1– 6 (except when the PRE switch is on for AUX buses 3–6). PHANTOM GROUP AUX PFL/AFL ST 1 2 3 4 1 2 3 4 5 6 L R L R +48V PAD ST HA 1-20 {1-12} {1-8} HPF 1-2 PAN 80 GAIN g g 3-4 HIGH 26dB f g ON MID INPUT B 3 Stage EQ LOW INPUT A PEAK INSERT I/O 0dB PHANTOM +48V AUX 1 AUX 2 AUX 3 PRE AUX 4 AUX 5 PRE AUX 6 PFL Mono input channel signal flow —Owner’s Manual  8 Front and rear panel ■ Stereo input channels A B GAIN 1 2 +10 –34 3 80 4 PEAK HIGH –15 +15 5 MID –15 +15 AUX 1 2 3 PRE 0 10 0 10 10 0 10 5 0 10 6 0 10 4 2 GAIN control This adjusts the input sensitivity. The range of levels that can be accommodated is +10 dB to –34 dB. PRE 0 6 1 A/B switch This switch selects input jacks. When the switch is in the upward position ( ) the input signal of the INPUT A jack is selected (page 18, 6 of the connector section). When the switch is in the downward section ( ), the input signal of the INPUT B jack is selected (0 of the connector section). +15 LOW –15 Here are the two stereo input channels provided by the GF24/12, GF16/12, and GF12/12. The INPUT 21/22 and 23/24 {13/14 and 15/16 on the GF16, and 9/10 and 11/12 on the GF12/12} jacks (6 and 0 of the connector section) are pairs of connectors that let you control a stereo signal using one input channel. If a cable is connected only to the INPUT A 21L or 23L jack {13L or 15L on the GF16/12, or 9L or 11L on the GF12/12}, the source will be controlled as a monaural signal. 3 High pass filter switch 7 PRE 4 PEAK indicator BAL 8 L ODD This is an on/off switch for the high pass filter that cuts the frequency range below 80 Hz at a slope of 12 dB/octave. The high pass filter is on when the switch is pressed in. R EVEN 9 ON This is an indicator that detects post-EQ clipping. It will light 3 dB before clipping, indicating that the signal is near the clipping level. If this LED lights, lower the GAIN control (2). 5 EQ controls (HIGH/MID/LOW) 10 1–2 0 5 0 3–4 5 ST A 10 15 20 30 40 B PFL C —Owner’s Manual This is a three-band equalizer that boosts/cuts each frequency band over a ±15 dB range. The center frequency and equalizer type for each band is shown below. Band Center frequency Type HIGH 10 kHz shelving MID 250 Hz peaking LOW 100 Hz shelving The response is flat when the knob is in the “▼” position.  Channel controls 6 AUX controls (1–6) 9 0 Group select switches These knobs adjust the level at which the input channel signal is sent to the AUX buses 1–6. AUX controls 1 and 2 are fixed at pre-fader, and AUX controls 3–6 can be switched between pre/post fader using the PRE switch (7). When a knob is in the “√” position, the level is “nominal.” These switches send the signal of the input channel to GROUP buses 1–4. When the 1–2 switch is on (pressed in) the signal will be sent to GROUP bus 1/2. When the 3–4 switch is on, the signal will be sent to GROUP bus 3/4. A ST (stereo) switch 7 PRE switches This switch sends the signal of the input channel to the ST bus. When this switch is on, the signal will be sent to the ST bus. These switches select whether the pre or post fader signal will be sent to AUX buses 3–6. This setting is switched in pairs: AUX 3/4 and 5/6. When the switch is pressed in, the pre-fader signal will be sent to the corresponding pair of AUX buses. When the switch is in the upward position, the post-fader signal will be sent. B PFL (pre-fader listen) switch This switch sends the pre-fader signal to the PFL/ AFL bus, allowing you to monitor it through headphones or monitor speakers. When this switch is on, the pre-fader signal of the input channel can be heard from the C-R OUT jacks and the PHONES jack, even if the ON switch (9) is off. 8 BAL (balance) control This adjusts the left/right balance at which the signal of the stereo input channel will be sent to the ST (stereo) bus, GROUP bus 1/2, and GROUP bus 3/4. C Channel fader This fader adjusts the input level of the stereo input channel. The position of the channel fader will affect the level of the signal that is output from the ST bus, GROUP buses 1–4, and AUX buses 1–6 (except when the PRE switch is on for AUX buses 3–6). 9 ON switch This switches the input channel on/off. When this switch is turned off, the signal of the input channel will not be sent to the ST bus, GROUP buses, or AUX buses. However even if this switch is off, you can use the PFL switch (B) to monitor the signal from the C-R OUT jacks or the PHONES jack. GROUP AUX PFL/AFL ST 1 2 3 4 1 2 3 4 5 6 L R L R PEAK ST A GAIN *2,*4 HA 80 HIGH HPF B INPUT A 3 Stage EQ MID HA LOW *1,*3 (MONO) ON BAL 1-2 3 Stage EQ HPF 80 3-4 *1,*3 INPUT B AUX 1 *2,*4 AUX 2 AUX 3 PRE AUX 4 AUX 5 No. GF12/12 GF16/12 *1 9L 13L GF24/12 PRE AUX 6 21L PFL *2 10R 14R *3 11L 15L 23L *4 12R 16R 24R 22R Stereo input channel signal flow —Owner’s Manual  10 Front and rear panel Master controls ■ GROUP section This section individually controls the output signal of GROUP buses 1–4. The signal that passes through the GROUP 1–4 output channels can be sent individually from the GROUP OUT 1–4 output jacks (page 20, D in the connector section), and can also be sent to the ST bus or PFL/ AFL bus by using the TO ST switch (group section 2) and AFL switch (group section 4). PAN PAN PAN PAN 1 L 2 R L TO ST 3 R L TO ST R L TO ST R TO ST 10 10 10 10 5 5 5 5 0 0 0 0 5 5 5 5 10 10 10 10 15 20 30 40 15 20 30 40 15 20 30 40 15 20 30 40 AFL AFL AFL AFL 4 GROUP 1 GROUP 2 GROUP 3 GROUP 4 1 PAN control This knob adjusts the left/right position when sending the signal of each GROUP bus 1–4 to the ST bus. ST PFL/AFL L R L R to Meter GROUP 1 2 3 4 PAN TO ST 2 TO ST switch GROUP OUT 1 This switch sends the signal of each GROUP bus 1–4 to the ST bus. When the switch is on, the signal that has passed through the PAN control (1) will be sent to the ST bus. AFL to Meter PAN TO ST GROUP OUT 2 3 Group fader This adjusts the output level of each GROUP bus 1–4. The position of the group fader will affect all signals that are sent from the GROUP bus to the GROUP OUT jacks, ST bus, and PFL/AFL bus. 4 AFL (after-fader listen) switch This switch sends the signal of the GROUP bus to the PFL/AFL bus. If this switch is on, the afterfader signal of the GROUP bus can be monitored in the C-R OUT jacks or the PHONES jack. —Owner’s Manual AFL GROUP OUT 3-4: Same as GROUP OUT 1-2 Group section signal flow  Master controls 11 ■ AUX section This section individually controls the output signals of AUX buses 1–6. The signal that has passed through the AUX 1–6 output channels can be sent individually to the AUX OUT jacks 1–6 (page 17, 1 in the connector section), and can also be sent to the PFL/AFL bus by using the AFL switch (2 in the AUX section). 1 10 10 10 10 10 10 5 5 5 5 5 5 0 0 0 0 0 0 5 5 5 5 5 5 10 10 10 10 10 10 15 20 30 40 15 20 30 40 15 20 30 40 15 20 30 40 15 20 30 40 15 20 30 40 AFL 2 AUX 1 AFL AUX 2 AFL AUX 3 AFL AFL AUX 4 AUX 5 AFL AUX 6 1 AUX fader These faders adjust the output level of AUX buses 1–6. The position of the AUX faders will affect the signals that are sent from the AUX bus to the AUX OUT jacks and the PFL/AFL bus. AUX 1 2 3 4 5 6 PFL/AFL L R AUX OUT 1 AFL AUX OUT 2 2 AFL (after-fader listen) switch This switch sends the AUX bus signal to the PFL/ AFL bus. When the switch is on, the after-fader signal of the AUX bus can be monitored in the CR OUT jacks or the PHONES jack. AFL AUX OUT 3-4: AUX OUT 5-6: Same as AUX OUT 1-2 AUX section signal flow —Owner’s Manual  12 Front and rear panel ■ STEREO/MONO section 1 MONO (monaural) control This section separately controls the STEREO OUT jacks (page 17, 3 in the connector section) which are the main output of the mixer, and the MONO OUT jack (page 17, 2 in the connector section) which outputs a monaural mix of the STEREO OUT output. MONO 1 0 2 10 POST 2 POST switch This switches the output of the fader between the pre- and post-fader signals. When this switch is pressed in, the signal after passing through the STEREO fader (post-fader) will be sent to the MONO OUT jack. When this switch is in the upward position, the signal before passing through the STEREO fader (pre-fader) will be sent to the MONO OUT jack. 3 STEREO fader 10 This adjusts the level of the signal that is sent to the STEREO OUT jack. The position of the STEREO fader will affect the signals that are sent from the ST bus to the STEREO OUT jacks, the MONO OUT jack (if the POST switch 2 is on), and the PFL/AFL bus. 5 0 5 10 15 20 30 40 3 This adjusts the signal level that is sent to the MONO OUT jack. The level is nominal when the control is at the “√” position. 4 AFL (after-fader listen) switch 4 AFL STEREO This switch sends the signal of the ST bus to the PFL/AFL bus. When the switch is on, the signal following the STEREO fader (the same signal as output from the STEREO OUT jacks) can be monitored from the C-R OUT jacks and the PHONES jack. ST L R PFL/AFL L R to Meter ST INSERT I/O L to Meter L ST INSERT I/O R STEREO OUT R L PAD REC OUT R AFL MONO OUT POST MONO STEREO/MONO section signal flow —Owner’s Manual  Master controls ■ AUX RETURN section 1 GROUP 1/2, AUX 1/2 mix controls These controls adjust the level at which signals from the AUX RETURN 1 jacks are sent to GROUP bus 1/2 and AUX bus 1/2. When a stereo signal is input, the signals of the L and R channels will be sent to GROUP buses 1/2 and AUX buses 1/2 respectively. When a monaural signal is input, the same signal will be sent to GROUP buses 1 and 2, and to AUX buses 1 and 2. This section controls the two stereo AUX returns. By using the L and R jacks of AUX RETURN 1/2 (page 19, A in the connector section) in pairs, you can input stereo signals. If only the L jack of AUX RETURN 1/2 is connected, this can be used as a monaural AUX return. The input signal from AUX RETURN jack 1 can also be sent to GROUP bus 1/2 and AUX bus 1/2, and the input signal from AUX RETURN jack 2 can be sent to GROUP bus 3/4 and AUX bus 3/4. GROUP 1 2 GROUP 3/4, AUX 3/4 mix controls These controls adjust the level at which signals from the AUX RETURN 2 jacks are sent to GROUP bus 3/4 and AUX bus 3/4. When a stereo signal is input, the signals of the L and R channels will be sent to GROUP buses 3/4 and AUX buses 3/4 respectively. When a monaural signal is input, the same signal will be sent to GROUP buses 3 and 4, and to AUX buses 3 and 4. GROUP 0 3 10 0 13 10 3 ST (stereo) controls 1 2 0 10 AUX 3 4 0 10 10 10 30 10 20 10 ST 40 10 0 10 These adjust the level at which the input signals from the AUX RETURN 1/2 jacks are sent to the ST bus. The position of the stereo control knobs does not affect the GROUP 1–4 and AUX 1–4 mix controls (1 and 2). 2 AUX 4 PFL (pre-fader listen) switch ST 0 10 These switches send the input signal from the AUX RETURN 1/2 jacks to the PFL/AFL bus. When this switch is on, the input signal from the AUX RETURN 1/2 jacks can be monitored directly from the C-R OUT jacks or the PHONES jack. 4 PFL PFL 1 AUX RETURN 2 GROUP AUX ST PFL/AFL 1 2 3 4 1 2 3 4 5 6 L R L R L (MONO) AUX RETURN 1 R GROUP 1 GROUP 2 AUX 1 AUX 2 ST PFL L (MONO) AUX RETURN 2 R GROUP 3 GROUP 4 AUX 3 AUX 4 ST PFL AUX RETURN section signal flow —Owner’s Manual  14 Front and rear panel ■ TAPE IN section 1 ST (stereo) control This section controls the signal that is input from the TAPE IN jacks (page 17, 4 in the connector section). The input signal from the TAPE IN jacks can be sent directly from the ST bus, and can also be monitored from the C-R OUT jacks or PHONES jack. 1 0 10 2 This adjusts the level at which the input signal from the TAPE IN jacks is output to the ST bus. 2 ON switch This is an on/off switch for the signal that is sent from the TAPE IN jacks to the ST bus. Even when this switch is off, the TAPE IN switch (page 15, 3 in the other controls/connector section) can be turned on to allow monitoring of the TAPE IN input signal from the C-R OUT jacks or the PHONES jack. ON TAPE IN ■ Other controls/connectors 1 PHANTOM +48 V (phantom power sup- PHANTOM +48V 1 OFF ON METER SELECT 2 STEREO PFL•AFL GROUP 3 TAPE IN 4 0 10 C-R MONITOR LEVEL 5 0 10 PHONES LEVEL ply) switch This is the on/off switch for the +48 V phantom power supply. When this switch is on, the PHANTOM indicator (page 16, 3 in the meter bridge section) will light, and DC +48 V phantom power will be supplied to the INPUT A jacks (page 18, 7 in the connector section) of each mono input channel. Caution: When phantom power is on, connecting an unbalanced device or a device whose transformer is center-grounded may cause hum, noise, or malfunctions. If you do not require phantom power, be sure to turn this switch off. 2 METER SELECT switch This selects the signal source whose level will be shown by the level meters. When the switch is down ( ) The level meters will show the output level of the GROUP buses 1–4. PHONES 6 —Owner’s Manual When the switch is up ( ) The two level meters at the left will show the output level of the ST bus, and the two level meters at the right will show the output level of either the PFL/AFL bus or the TAPE IN jacks (page 17, 4 in the connector section), depending on the setting of the TAPE IN switch (3).  Master controls 3 TAPE IN switch 15 6 PHONES (headphone) jack This selects the signal that will be monitored by the C-R OUT jacks and PHONES jack: either the PFL/AFL bus, or the TAPE IN jacks. 4 C-R MONITOR LEVEL (control room moni- A set of stereo headphones can be connected to this jack for monitoring. This jack will output the same signal as the C-R OUT jacks. The wiring of this jack is as shown in the following diagram. tor level) control This adjusts the level of the signal that is sent to the C-R OUT jacks. It does not affect the output signal of the PHONES jack. Tip (hot) 1/4" TRS phone plug 5 PHONES LEVEL (headphone) jack Ring (cold) Sleeve (ground) This adjusts the level of the signal that is sent to the PHONES jack. It does not affect the output signal of the C-R OUT jacks. from STEREO OUT L from GROUP OUT 1 from STEREO OUT R from GROUP OUT 2 ST PFL/AFL L R L R from GROUP OUT 3 from GROUP OUT 4 METER SELECT BA TAPE IN L C-R MONITOR LEVEL C-R OUT BA R L TAPE IN ST ON BA R PHONES LEVEL PHONES BA Tape input and monitor output signal flow —Owner’s Manual  16 Front and rear panel ■ Meter section This is a peak level meter that shows (according to the setting of the METER SELECT switch, page 14) the output levels of GROUP buses 1–4, the ST bus, and the PFL/AFL bus, and the input level of the TAPE IN jacks. The status of the mixer’s power supply and phantom power is also shown here. 1 2 POWER PEAK +8 +5 +3 +1 0 –1 –3 –5 –7 –10 –15 –20 PEAK +8 +5 +3 +1 0 –1 –3 –5 –7 –10 –15 –20 L R STEREO 1 2 1 Level meters L R 3 PFL•AFL/TAPE IN PHANTOM 3 4 2 POWER indicator When the METER SELECT switch (page 14) is pressed inward ( ), the four level meters will show the output levels of GROUP buses 1–4. When the METER SELECT switch is in the upward position ( ), the two level meters at left will show the output level of the ST bus, and the two level meters at right will show either the output level of the PFL/AFL bus or the input level of the TAPE IN jacks (page 17, 4 of the connector section), depending on the setting of the TAPE IN switch (page 15, 3 of other controls/connectors). —Owner’s Manual This indicator shows the on/off status of the mixer’s power supply. When the POWER switch (page 20, E in the connector section) has been pressed to turn on the power, this indicator will light. 3 PHANTOM (phantom power supply) indicator This indicator shows the on/off status of the phantom power supply. When the PHANTOM +48 V switch (page 14, 1 in other controls/connectors) has been slid to turn on the phantom power, this indicator will light.  Connectors 17 Connectors D C B A 0 INSERT I/O C-R OUT +4dB R POWER ON/ OFF E ST INSERT I/O 0dB L R 4 3 6 5 AUX RETURN +4dB L 2L GROUP OUT +4dB 2 2R 1 1R 23L AUX OUT +4dB (BALANCE) 4 3 OUT IN 1L (MONO) 2 INPUT B 21L 24R 1 INSERT I/O 0dB INSERT I/O 0dB INSERT I/O 0dB INPUT INPUT INPUT B B B 9 22R 8 TAPE IN –10dBV 23L R MONO OUT +4dBV 1 2 L R 4 1 AUX OUT jacks 1–6 7 INPUT A INPUT A INPUT A INPUT A 6 3 STEREO OUT jacks These are TRS phone output jacks (balanced) that individually output the signals of AUX buses 1–6. Nominal level is +4 dB. These jacks can be connected to your foldback system or to the inputs of external effect processors. The pin wiring is shown in the following diagram. Tip (hot) 1/4" TRS phone plug 5 21L 22R 24R REC OUT –10dBV STEREO OUT +4dBV 3 L (MONO) These are XLR-3-32 type connectors (balanced) which output the main stereo signal that has passed through the STEREO fader. Nominal output level is +4 dB. The pin wiring is shown in the following diagram. Female XLR connector 2 (hot) 3 (cold) Ring (cold) 1 (ground) Sleeve (ground) 2 MONO OUT jack 4 TAPE IN connector This is a XLR-3-32 type connector (balanced) which outputs a monaural mix of the main stereo output. Nominal output level is +4 dB. The pin wiring is shown in the following diagram. Female XLR connector These are phono inputs jacks (unbalanced) for connecting external line level devices. Nominal level is –10 dBV. The pin wiring is shown in the following diagram. 2 (hot) 3 (cold) Phono plug Tip Sleeve 1 (ground) —Owner’s Manual  18 Front and rear panel 5 REC OUT jacks 7 INPUT A jacks 1–20 {1–12 on the GF16/12, These are phono jacks (unbalanced) that output the signal from the ST bus, with a nominal level of –10 dBV. This output signal is not affected by external effect processors connected to the ST INSERT I/O jacks (B) or by the position of the STEREO fader (page 12, 3 in the STEREO/ MONO control section). The pin wiring is shown in the following diagram. Phono plug Tip 1–8 on the GF12/12} These are XLR-3-31 type input connectors (balanced) for the monaural input channels. Nominal input level is –16 dB to –60 dB when the pad switch (page 6, 1 of the monaural input channel section) is off, and +10 dB to –34 dB when the pad switch is on. When the PHANTOM +48 V switch (page 14, 1 of other controls/connectors) is on, DC +48 V phantom power is supplied to pins 2/3. The pin wiring is shown in the following diagram. Sleeve Male XLR connector 6 INPUT A jacks 21–24 {13–16 on the GF16/ 12, 9–12 on the GF12/12} These are 1/4" phone input jacks (unbalanced) for the stereo input channels, with nominal level of +10 dB to –34 dB. When using these as mono channels, insert a plug only into the 21L/23L jacks {13L/15L on the GF16/12, or 9L/11L on the GF12/12}. The pin wiring is shown in the following diagram. Tip (send) 1/4" phone plug 1 (ground) 3 (cold) 2 (hot) 8 INPUT B jacks 1–20 {1–12 on the GF16/12, 1–8 on the GF12/12} These are TRS phone input jacks (balanced) for the monaural input channels. Nominal input level is the same as for the INPUT A jacks (7). Be aware that it is not possible to simultaneously use both the INPUT A and INPUT B jacks of the same channel. Phantom power is not supplied to the INPUT B jacks. The pin wiring is shown in the following diagram. Sleeve (ground) Tip (hot) 1/4" TRS phone plug Ring (cold) Sleeve (ground) —Owner’s Manual  Connectors 19 9 INSERT I/O jacks 1–20 {1–12 on the GF16/ 12, 1–8 on the GF12/12} These are TRS phone input/output jacks for inserting external effect processors between the EQ and channel fader of a monaural input channel. Nominal level is 0 dB. The pin wiring is shown in the following diagram. Tip (send) 1/4" phone plug Tip (send) Ring (return) 1/4" TRS phone plug To processor’s input Tip (return) Sleeve (ground) 1/4" phone plug Connect to INSERT I/O jack From processor’s output 0 INPUT B jacks 21–24 {13–16 on the GF16/ 12, 9–12 on the GF12/12} These are phono input jacks (unbalanced) for the stereo input channels. Nominal level is the same as the INPUT A jacks (6). On the stereo input channels, you can make connections both to the INPUT A jacks (6) and the INPUT B jacks (0), and use the A/B switch (page 8, 1 in the stereo input channel section) to select whether INPUT jack A or B will be used. Be aware that in the case of the INPUT B jacks, the channel cannot be used as a mono input channel by inserting a plug only into 21L and 23L. (If only 21L or 23L are connected, the signal will be sent only to the left channel.) The pin wiring is shown in the following diagram. Phono plug Sleeve (ground) Sleeve (ground) A AUX RETURN jacks 1/2 These are 1/4" phone input jacks (unbalanced) for connecting the stereo output of external effect processors, etc. The nominal level is +4 dB. If inputting a monaural signal, connect a plug only to the 1L or 2L jack. The pin wiring is shown in the following diagram. Tip (send) 1/4" phone plug Sleeve (ground) Tip Sleeve —Owner’s Manual  20 Front and rear panel B ST INSERT I/O jacks These are TRS phone input/output jacks for inserting external effect processors between the ST bus and the STEREO fader. The nominal input/output level is 0 dB. The pin wiring is shown in the following diagram. Tip (send) 1/4" phone plug Tip (send) Ring (return) 1/4" TRS phone plug To processor’s input Sleeve (ground) Tip (return) Sleeve (ground) 1/4" phone plug Connect to INSERT I/O jack From processor’s output C C-R OUT (control room monitor out) jacks These are 1/4" phone output jacks (unbalanced) for monitoring the PFL/AFL bus or the input signal from the TAPE IN jacks (4). The nominal output level is +4 dB. The pin wiring is shown in the following diagram. Tip (send) 1/4" phone plug Sleeve (ground) D GROUP OUT jacks 1–4 These are 1/4" phone jacks (unbalanced) which individually output the signals of GROUP buses 1–4. The nominal output level is +4 dB. Tip (send) 1/4" phone plug Sleeve (ground) E POWER switch This switch turns the power of the mixer on or off. —Owner’s Manual Sleeve (ground)  Specifications 21 Specifications General specifications Frequency response 20 Hz–20 kHz +1 dB, –3 dB @+4 dB into 600Ω (GROUP OUT, AUX OUT, ST OUT, MONO OUT) Total harmonic distortion Less than 0.1%, @20 Hz–20 kHz, +14 dB into 600Ω (GROUP OUT, AUX OUT, ST OUT, MONO OUT) Input gain control: minimum –128 dB equivalent input noise –95 dB residual output noise (GROUP OUT, AUX OUT, ST OUT, MONO OUT) Hum & noise (Average, Rs=150Ω with 20 Hz–20 kHz BPF) –86 dB (GROUP OUT, ST OUT, MONO OUT) Master fader: nominal level All channel faders: minimum All channel assign switches: off –81 dB (AUX OUT) Master fader: nominal level All channel faders, all AUX level controls: minimum –64 dB (68 dB S/N) (GROUP OUT, AUX OUT, ST OUT) Master fader, one channel fader, AUX level control: nominal level, Assign switch: on One channel gain control: maximum Maximum voltage gain 84 dB 84 dB 58 dB 58 dB CH IN to ST OUT CH IN to GROUP OUT ST IN to ST OUT ST IN to GROUP OUT Crosstalk (at 1 kHz) 70 dB adjacent input 70 dB input to output CH input gain control 44 dB variable CH input PAD 0 dB/26 dB CH input HPF 80 Hz 12 dB/oct CH input equalization ±15 dB maximum HIGH 10 kHz shelving* MID 250 Hz–5 kHz peaking LOW 100 Hz shelving* * Turn over/roll off frequency of shelving: 3 dB below maximum variable level. ST input equalization ±15 dB maximum HIGH 10 kHz shelving* MID 2.5 kHz peaking LOW 100 Hz shelving* * Turn over/roll off frequency of shelving: 3 dB below maximum variable level. Meters 13 points LED meters x4 (GROUP 1–4 /ST L R, PFL•AFL•TAPE IN L R) CH peak indicators Red LED on each channel turns on when Post EQ signal reaches the level –3 dB below clipping. Phantom power +48 V is supplied to electrically balanced inputs. Power requirement USA and Canada: 120 V AC 60 Hz Other: 230 V AC 50 Hz Power consumption GF24/12: 70 W, GF16/12: 70 W, GF12/12: 70 W Dimensions (WxHxD) GF24/12: 938×157×487 mm GF16/12: 701×157×487 mm GF12/12: 587×157×487 mm Weight GF24/12: 20 kg, GF16/12: 16 kg, GF12/12: 14 kg • 0 dB is referenced to 0.775 Vrms. —Owner’s Manual  22 Specifications Input specifications Input terminals INPUT A, B (1–20, 1–12, 1–8) ST INPUT A, B (21–24, 13–16, 9–12) Gain trim Actual load impedance For use with nominal 3 kΩ 50–600Ω Mics & 600Ω Lines Input level Connector Sensitivity†1 Nominal Max. before clip –86 dB (38.8 µV) –60 dB (0.775 mV) –40 dB (7.75 mV) –42 dB (6.16 mV) –16 dB (123 mV) +4 dB (1.23 V) MAX –60 dB (0.775 mV) –34 dB (15.5 mV) –14 dB (155 mV) MIN –16 dB (123 mV) +10 dB (2.45 V) +30 dB (24.5 V) A: Phono jack†3 B: Phone jack†3 –12 dB (195 mV) +4 dB (1.23 V) +20 dB (7.75 V) Phone jack†3 –26 dBV (50.1 mV) –10 dBV (316 mV) +8 dBV (2.51 V) Phono jack†3 0 dB (775 mV) +20 dB (7.75 V) Phone jack (I/O)†3 MAX MIN AUX RTN IN (1, 2) TAPE IN (L, R) 10 kΩ 600Ω Lines CH INSERT IN (1–20, 1–12, 1–8) –26 dB (38.8 mV) ST INSERT IN (L, R) –10 dB (245 mV) A: XLR-3-31 type†2 B: Phone jack†2 †1. Sensitivity is the lowest level that will produce an output of +4 dB (1.23 V) or the nominal output level when the unit is set at maximum gain. (All faders and level controls are at maximum positions.) †2. Balanced. †3. Unbalanced. • When dB represents a specific voltage, 0 dB is referenced to 0.775 Vrms, 0 dBV is referenced to 1 Vrms. Output specifications Output terminals Actual source impedance For use with nominal Output level Connector Nominal Max. before clip ST OUT (L, R) 150Ω +24 dB (12.3 V) XLR-3-32 type†1 +20 dB (7.75 V) Phone jack†2 MONO OUT GROUP OUT (1–4) 75Ω AUX OUT (1–6) 150Ω +24 dB (12.3 V) Phone jack†1 C-R OUT (L, R) 75Ω +20 dB (7.75 V) Phone jack†2 –10 dBV (316 mV) +10 dBV (3.16 V) Phono jack†2 0 dB (775 mV) +20 dB (7.75 V) 3 mW 100 mW 600Ω Lines REC OUT (L, R) CH INSERT OUT (1–20, 1–12, 1–8) 600Ω +4 dB (1.23 V) 10 kΩ Lines Phone jack (I/O)†2 ST INSERT OUT (L, R) PHONES OUT 100Ω 40Ω Phones †1. Balanced. †2. Unbalanced. • When dB represents a specific voltage, 0 dB is referenced to 0.775 Vrms, 0 dBV is referenced 1 Vrms. Specifications are subject to change without prior notice. For European Model Purchaser/User Information specified in EN55103-1 and EN55103-2. Inrush Current: 3A Conformed Environment: E1, E2, E3 and E4 —Owner’s Manual ST phone jack†2  Dimensions 23 Dimensions 119 349 119 GF12/12 119 463 119 GF16/12 351 349 119 GF24/12 D: 487 300 H: 157 119 119 W: GF24/12: 938 GF16/12: 701 GF12/12: 587 Unit: mm —Owner’s Manual  24 Specifications Block/Level Diagram PHANTOM GROUP AUX 1 2 3 4 1 2 3 4 5 6 +48V INPUT A PAD PEAK INSERT I/O 0dB PHANTOM +48V to ST ST HA 3 Stage EQ HPF 1-20 {1-12} {1-8} 1-2 PAN 80 g g 3-4 MID HIGH GAIN LOW 26dB INPUT B f g ON AUX 1 AUX 2 AUX 3 PRE to Meter AUX 4 AUX 5 PRE to PFL/AFL PAN TO ST AUX 6 PFL GROUP OUT 1 to PFL/AFL ST *2,*4 HA 80 HIGH GAIN INPUT A GROUP OUT 2-4: Same as GROUP OUT 1 3 Stage EQ HPF MID HA B LOW *1,*3 (MONO) AFL to ST PEAK A ON 1-2 BAL 3 Stage EQ HPF 80 3-4 *1,*3 INPUT B AUX 1 *2,*4 AUX 2 AUX 3 No. GF12/12 GF16/12 GF24/12 *1 9L 13L 21L *2 10R 14R 22R *3 11L 15L 23L *4 12R 16R 24R PRE AUX 4 AUX 5 PFL to PFL/AFL PRE AUX 6 AUX OUT 1 L (MONO) AUX RETURN 1 R to PFL/AFL GROUP 1 AFL GROUP 2 AUX OUT 2-6: Same as AUX OUT 1 AUX 1 AUX 2 to ST ST PFL L (MONO) AUX RETURN 2 R to PFL/AFL GROUP 3 GROUP 4 AUX 3 AUX 4 ST PFL to ST to PFL/AFL +20 dB +10 dB PAD 26 dB GAIN Min (+10 dB) ST INPUT GAIN Min (+10 dB) AUX RETURN (+4 dB) GROUP OUT, AUX OUT (+4 dB) INSERT I/O (0 dB) 0 dB AUX (–6 dB) –10 dB PAD 0 dB GAIN Min (–16 dB) Ch Fader –20 dB –30 dB PAD 26 dB GAIN Max (–34 dB) ST INPUT GAIN Max (–30dB) –40 dB –50 dB –60 dB PAD 0 dB GAIN Max (–60 dB) —Owner’s Manual GROUP, AUX  25 ST L R PFL/AFL L R from GROUP OUT 1 ST INSERT I/O L from GROUP OUT 2 L ST INSERT I/O R from GROUP OUT 3 STEREO OUT from GROUP OUT 4 R METER SELECT L PAD 1-20 Ch Input {1-12} {1-8} from REC OUT R AFL (L) (R) MONO OUT POST MONO Ch Input *1,*3 Ch Input *2,*4 AUX RETURN 1, 2 L R 1-20 Ch Input {1-12} {1-8} Ch Input *1,*3 Ch Input *2,*4 from AUX RETURN 1, 2 L R GROUP OUT AUX OUT BA TAPE IN L C-R MONITOR LEVEL C-R OUT BA R L TAPE IN ST ON BA R PHONES LEVEL PHONES BA +20 dB +10 dB STEREO OUT, MONO OUT (+4 dB) C-R OUT (+4 dB) ST INSERT I/O (0 dB) TAPE IN (–10 dBV) 0 dB PHONES (3 mW, 40*) REC OUT (–10 dBV) –10 dB MONO –20 dB –30 dB –40 dB –50 dB –60 dB —Owner’s Manual  YAMAHA CORPORATION V329640 R3 1 IP 32 NP Printed in Taiwan Pro Audio Division, #18/3 P.O. Box 3, Hamamatsu, 430-8651, Japan