VT X A12 | User Manual
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8 - VTX A12 PRESET LIBRARY
The VTX A12 preset library includes standard array and fill (FL) operating modes, along with full-range and 80Hz low-fre-
quency processing for VTX A12 and G28/S28 subwoofer combinations. Cardioid presets are included for all VTX
subwoofer models. VTX presets are exclusively developed for Crown I-Tech HD amplifiers and come bundled with JBL
HiQnet® Performance Manager
TM
control software. Audio Architect presets are also available and can be downloaded
from the JBL Pro website. Please see below for a detailed description of VTX A12 operating modes and subwoofer
processing options, and refer to the Preset Library setup sheets for preset descriptions, memory locations, and output
channel assignments.
8.1 - VTX A12 PRESET MODES AND OPTIONS
Two preset modes are available as are two low-frequency processing options:
VTX A12 FL: The FL presets (short for FILL) have nominally-flat frequency response and are to be used in situations
where one or two A12 cabinets are appropriate, such as distributed front fills. With this preset, the acoustical low-fre-
quency response of the system extends down to 45Hz (Fullrange).
VTX A12 FL 80: The FL 80 presets have nominally-flat frequency response and are to be used in situations where one
or two A12 cabinets are appropriate, such as distributed front fills. With this preset, the acoustical low-frequency re-
sponse of the system is set to 80Hz and used when subwoofers are available.
VTX A12: This is the standard VTX A12 preset for array use. A high-frequency shelving response is applied to offset LF/
MF array buildup for nominally-focused arrays (equal enclosure site angle impact spacing over the desired audience cov-
erage area). With this preset, the acoustical low-frequency response of the system extends down to 45Hz (Fullrange).
VTX A12 80: This is the standard VTX A12 preset for array use with subwoofers. A high-frequency shelving response
is applied to offset LF/MF array buildup for nominally-focused arrays (equal enclosure site angle impact spacing over the
desired audience coverage area). With this preset, the acoustical low-frequency response of the system is set to 80Hz.
The VTX A12 80 preset will generate the highest A-weighted maximum sound pressure level.
TIP:
• Both the Fullrange and 80Hz presets can be used with subwoofers depending on the application and
subwoofer arrangement. For more information on using subwoofers, see chapter 9.
• Mixing FL and standard presets in the same array is not recommended.
• The VTX A12 presets provide a well-balanced tonal starting point for a given array size. The Array Size
Compensation filter found in the JBL Line Array Control Panel (LACP) can be used to further fine-tune the
tonal balance of an array for a given array length. Please refer to the LACP section for more information.
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