L-Acoustics V-DOSC User Manual

L-ACOUSTICS V-DOSC Manual Version 4 6/29/2005 Page 10 of 158
Figure 104: The effect of varying frequency and listener position M on Fresnel rings..................................145
Figure 105: Destructive and constructive interference rings for a line array at observation point M...........145
Figure 106: Constructive interference rings for a condensed point source line array. ................................. 146
Figure 107: Destructive interference rings out of beamwidth for condensed and standard line arrays ......147
Figure 108: Front view of V-DOSC array and vertically stacked DOSC waveguides ...................................148
Figure 109: Horn Generated Wavefronts......................................................................................................149
Figure 110: DOSC Waveguide – Internal Section ........................................................................................149
Figure 111: Illustration of the Fresnel and Fraunhofer regions...................................................................... 150
Figure 112: Illustration of dborder and Dv for a flat 12 enclosure array....................................................... 151
Figure 113: Illustration of the variation of vertical coverage angle with frequency ...................................... 152
Figure 114: Angle strap calibration...............................................................................................................154
LIST OF TABLES
Table 1: L-ACOUSTICS LA48a power amplifier ratings.................................................................................38
Table 2: Load and Power Ratings for V-DOSC...............................................................................................39
Table 3: PADO4a COMB Wiring Chart..........................................................................................................41
Table 4: PADO4a Internal Amp Rack Wiring Chart........................................................................................41
Table 5: PADO2a COMB Wiring Chart..........................................................................................................42
Table 6: PADO2a Internal Amp Rack Wiring Chart........................................................................................42
Table 7: V-DOSC preset DSP output channel assignment and COMB connector summary ......................... 45
Table 8: 2-way, 3-way stereo preset DSP output channel assignment and COMB connector summary.......47
Table 9: SUB / LOW OPERATING BANDWIDTH SUMMARY ..................................................................... 52
Table 10: Recommended Limiter Threshold Settings .....................................................................................58
Table 11: XTA DP224 Presets ........................................................................................................................59
Table 12: XTA DP226 Presets ........................................................................................................................60
Table 13: Lake Contour Presets...................................................................................................................... 61
Table 14: BSS FDS 366 Presets .......................................................................................................................62
Table 15: Angle Strap Values .........................................................................................................................110
Table 16: Weights for flown V-DOSC system...............................................................................................136
Table 17: Whirlwind W6 MASS Connector Input/Output Line Assignments................................................ 137
Table 18a: CO24 W6 Pin Assignments..........................................................................................................138
Table 18b: CO24 W6 Socket Assignments ................................................................................................... 139
Table 19a: MD24 W6 Pin Assignments ......................................................................................................... 140
Table 19b: MD24 W6 Socket Assignments ...................................................................................................141
Table 20: Border (in m) Between Cylindrical (Fresnel) and Spherical (Fraunhofer) Zones..........................151
Table 21: Dv - Vertical Coverage Angle in the Farfield Region ..................................................................... 151
Table 22: WST Criteria Number 5................................................................................................................153

L-Acoustics V-DOSC Specifications

General

Brand	L-Acoustics
Model	V-DOSC
Category	Amplifier
Language	English