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4
Introduction
—Owner’s Manual
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 perfor-
mance, 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 indepen-
dently from the STEREO OUT jacks. Since a mon-
aural 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 accom-
modate 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.
• 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