Velodyne SUBWOOFER Placement Recommendations Manual Download

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The difference is hard to see at the above scale, so we have enlarged the curves below. The first image is the original curve, and the second

image the curve after moving the subwoofer one foot.

Difference between the curves and parameters:

• The low-pass crossover frequencies are the same, but the original crossover slope is 30 dB and the second slope is 24 dB.

• Note the level increase of up to 1 dB between 20 Hz and 50 Hz. This shows that even small placement changes of the subwoofer

can greatly improve the performance in the bass region.

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Subwoofer Placement Recommendations Guide

APPENDIX A

Summary of Contents for SUBWOOFER

Page 1: ...SET UP S U B W O O F E R P L A C E M E N T R E C O M M E N D A T I O N S G U I D E This guide provides recommendations on where to place your subwoofer s in your listening room Velodyne...

Page 2: ...tions G U I D E L I N E S General Subwoofer Placement Guidelines Single Subwoofer Placement Guidelines Twin Subwoofer Placement Guidelines Quad Subwoofer Placement Guidelines P L A C E Place a Single...

Page 3: ...the reversed positions or as it s sometimes called the crawl test Using this method you move your preferred seating out of the way connect the subwoofer to the system and place the subwoofer in the pr...

Page 4: ...binet A cabinet with a downward firing port or passive radiator uses the complete available periphery for radiation so block this opening as minimally as possible PLACE THE SUBWOOFER ON THE FLOOR If t...

Page 5: ...to occur it might give away its location Other tips PLACE in a CORNER loudest but not the most accurate or within a few feet of a wall smoothest but not the loudest AVOID locations far away from a wa...

Page 6: ...third away from the front of the room on either the right or left side of the room Figure 1 Recommended Single Subwoofer Placements 4 Subwoofer Placement Recommendations Guide PLACE 1 2 3 RECOMMENDED...

Page 7: ...osite diagonal corners One in the front center and one in the rear center or One a quarter or one third away from the front of the room on both the right and left sides of the room Figure 2 Recommende...

Page 8: ...ommended Twin Subwoofer Quarter Wall Placements 6 Subwoofer Placement Recommendations Guide PLACE QUARTER PLACEMENT RECOMMENDED TWIN SUBWOOFER PLACEMENTS OpUlrlum S Po ltlo lor ttl au f tlper ut QUART...

Page 9: ...n Subwoofer Center Placements 7 Subwoofer Placement Recommendations Guide PLACE Optimum Se tlnt Po ltlo or til Best Bass RECOMMENDED TWIN SUBWOOFER PLACEMENTS CENTER FRONT PLACEMENT CENTER REAR PLACEM...

Page 10: ...om You can try placing four subwoofers in either of the following configurations One in the center of each wall or One in each corner Figure 5 Recommended Quad Subwoofer Center Placements 8 Subwoofer...

Page 11: ...ecommended Quad Subwoofer Corner Placements 9 Subwoofer Placement Recommendations Guide PLACE RECOMMENDED QUAD SUBWDDFER PLACEMENTS Optimum S II POl iti lor ttl S Bu E rl nu CORNER PLACEMENT 1 3 ROOM...

Page 12: ...eat is located at about two thirds of the length of the side walls and in the center of the length of the front and rear walls Our satellite speakers were located on each side of the TV The doors were...

Page 13: ...oom Layout Evaluated Subwoofer Locations Evaluation by Listening In order to use the Crawl Test technique 1 We put the subwoofer in the location of the main listening seat To avoid having to lift the...

Page 14: ...st places for two subwoofers because these two locations sounded the same to our evaluator Evaluation by Frequency Response If you have a microphone and a Digital DrivePLUS subwoofer you can view the...

Page 15: ...thest response curve Also we picked Location 4 as the best location for a second subwoofer because the peak in its frequency response at about 60 Hz was narrower than the one in Location 2 Location 1...

Page 16: ...sounded crisp when listening at this location 2 Hot heavy boomy More level at 50 to 63 Hz Hence this curve has more energy in it than for Location 1 This accounts for why the evaluator thought there...

Page 17: ...y response we moved the subwoofer in Location 4 towards the center of the room one foot We ran the Auto EQPLUS optimization at each location to determine the frequency response The results are shown b...

Page 18: ...erence between the curves and parameters The low pass crossover frequencies are the same but the original crossover slope is 30 dB and the second slope is 24 dB Note the level increase of up to 1 dB b...

Page 19: ...Digital Drive Morgan Hill CA 95037 408 465 2800 voice 408 779 9227 fax 408 465 2851 service voice 408 779 9208 service fax www velodyne com Service E mail service velodyne com General E mail help velo...