MIXING CONSOLE Owner’s Manual Keep This Manual For Future Reference.
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
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.
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.
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 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.
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.
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).
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.
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).
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).
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.
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.
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.
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.
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.
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 jac
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.
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.
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.
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.
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.
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
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
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 +
YAMAHA CORPORATION V329640 R3 1 IP 32 NP Printed in Taiwan Pro Audio Division, #18/3 P.O.
