L-Acoustics V-DOSC User Manual

L-ACOUSTICS V-DOSC Manual Version 4 6/29/2005 Page 7 of 158
3.5 SUBWOOFER ARRAYING TECHNIQUES..................................................................................... 97
3.5.1 LEFT/RIGHT CONFIGURATIONS ...................................................................................... 97
3.5.2 CENTRAL LINE ARRAY WITH ELECTRONIC DELAY PROCESSING............................. 99
3.5.3 LEFT/CENTRE/RIGHT CONFIGURATIONS .................................................................... 100
3.5.4 LARGE FORMAT SUBWOOFER ARRAY CONFIGURATIONS ...................................... 102
3.6 COMPLEMENTARY FILL SYSTEMS ........................................................................................... 105
3.6.1 FRONT FILL........................................................................................................................ 105
3.6.2 OFFSTAGE FILL...................................................................................................................106
3.6.3 DELAY SYSTEMS............................................................................................................... 107
4. INSTALLATION PROCEDURES .................................................................................................... 109
4.1 STACKED SYSTEM ..................................................................................................................... 109
4.2 FLOWN SYSTEM ........................................................................................................................ 112
5. V-DOSC SYSTEM OPERATION..................................................................................................... 123
5.1 SYSTEM TONAL BALANCE ........................................................................................................ 123
5.2 MEASUREMENT PROCEDURES ............................................................................................... 125
Measurement Instruments.......................................................................................................... 125
Measurement Tips ....................................................................................................................... 126
Step-By-Step Tuning Procedure................................................................................................. 127
6. MAINTENANCE AND INSTALLATION TOOLS .......................................................................... 129
6.1 Recommended Maintenance Procedures ................................................................................... 129
6.2 Recommended Maintenance Tools............................................................................................. 129
6.3 Spare Parts ................................................................................................................................. 130
6.4 Recommended Installation Tools ................................................................................................ 131
7. SPECIFICATIONS ........................................................................................................................... 132
7.1 V-DOSC ENCLOSURE SPECIFICATIONS................................................................................... 132
7.2 SB218 SUBWOOFER SPECIFICATIONS..................................................................................... 134
7.3 RIGGING STRUCTURES ............................................................................................................ 135
V-DOSC BUMP2 Bumper ........................................................................................................... 135
SB218 BUMPSUB Rigging Bar ................................................................................................... 136
7.4 CO24, MD24 Line Assignment Summary.................................................................................... 137
7.5 CO24 Control Output Panel Line Assignments ........................................................................... 138
7.6 MD24 Multi Distro Panel Line Assignments................................................................................ 140
APPENDIX 1: Why Do Separated Sound Sources Interfere?.......................................................... 142
APPENDIX 2: Further Explanations Regarding WST Criteria ........................................................ 142
APPENDIX 3: How Does V-DOSC Behave With Respect To WST Criteria................................... 148
APPENDIX 4: How Does the DOSC Waveguide Work? .................................................................. 149
APPENDIX 5: The Border Between Fresnel And Fraunhofer Regions........................................... 150
APPENDIX 6: Pattern Control of a Constant Curvature Array ...................................................... 152
APPENDIX 7: WST Criteria Number 5 ............................................................................................. 153
APPENDIX 8: Angle Strap Calibration .............................................................................................. 154
APPENDIX 9: V-DOSC Rigging Certification .................................................................................... 155

L-Acoustics V-DOSC Specifications

General

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