JBL VTX M Series User Manual page 18

Using M Series
M Series V5 presets are optimized to generate a flat frequency response down to 150Hz with a small LF shelving response increase
below 150Hz for added LF impact. Two preset variations are available for each product and configuration modes:
Full-Range (FR): Full-Range (FR) presets allow M Series products to operate down to a safe low frequency limit that each monitor can
reproduce. This set of presets can be used when a full range performance is desired (i.e. drum fill or bass monitor).
With Subwoofers (80): The 80 preset introduces a high-pass filter at 80Hz and can be used when M Series is combined with supported
VTX Subwoofers (VTX F18S or the VTX S25). In this case, M Series is responsible for the spectrum above 80Hz and the added subwoofer
contributes to frequencies below 80Hz and down to 30Hz. The 80 presets can also be used in situations where no subwoofers are pres-
ent but reduced LF extension/energy is required such as vocal monitoring or when it is desirable to maximize A-weighted SPL output.
Supported VTX Series Subwoofers
When added low frequency extension is needed, M Series monitors can be used in conjunction with supported VTX Series subwoofers.
Preset support is included for the dual 15" VTX S25 subwoofer enclosure and the single 18" VTX F18S. Preset time alignment is opti-
mized for M Series products to be placed on top of the subwoofer enclosure as shown in the examples below. The orientation of the
M Series monitors can be selected depending on the required throw distance.
Short Throw
Each product (M20 and M22) can be used with either one of the subwoofer enclosures (see preset summary sheets for more informa-
tion). Multiple subwoofers enclosures can be used to achieve the desired low to mid-hi frequency contour and target MAX SPL.
Long Throw
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