L-ACOUSTICS V-DOSC Manual Version 4 6/29/2005 Page 52 of 158
1.15 V-DOSC PRESETS
Preset selection depends on many parameters including the V-DOSC array plus subwoofer
configuration, musical program and personal taste of the sound engineer. In general, ''LO'' presets are
the "smoothest" while ''HI'' presets are "brighter" (LO and HI refer to differences in the amount of HF
shelving equalization applied to the high section). When used standalone (without subwoofers), two
types of stereo 3-way presets are available (X and INFRA). There are four basic operating modes
when V-DOSC is used with SB218 subwoofers as a 4-way system (X, XAUX, INFRA, 4W) and for
extra impact, dV-SUB subwoofers can be added to create a 5-way system (X, INFRA modes).
A summary of operating bandwidths for the various presets is given in Table 9. Individual presets are
discussed in the following section along with further details concerning LO/HI equalization, subwoofer
time alignment techniques and sub/low gain scaling procedures.
Table 9: SUB / LOW OPERATING BANDWIDTH SUMMARY
3-WAY PRESETS
PRESET V-DOSC LOW
3W INFRA 60 – 200 Hz + LF shelving eq
3WX 30 – 200 Hz + LF shelving eq
4-WAY PRESETS
PRESET SB218 V-DOSC LOW
INFRA 27 – 60 Hz 60 – 200 Hz + LF shelving eq
4W 27 – 80 Hz 80 – 200 Hz
X 27 – 200 Hz 30 – 200 Hz + LF shelving eq
X AUX 27 – 80 Hz (inverted) 30 – 200 Hz + LF shelving eq
5-WAY PRESETS (FLOWN dV-SUBs)
PRESET SB218 dV-SUB V-DOSC LOW
5W INFRA 27 – 60 Hz 60 – 200 Hz 60 – 200 Hz + LF shelving eq
5W X 27 – 80 Hz (inverted) 30 – 200 Hz 30 – 200 Hz + LF shelving eq
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