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Summary of Contents for Velodyne SUBWOOFER
- Page 1 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 P L A C E M E N T C A U T I O N S Subwoofer Placement Cautions G U I D E L I N E S General Subwoofer Placement Guidelines Single Subwoofer Placement Guidelines Twin Subwoofer Placement Guidelines...
- Page 3 Technique in Velodyne’s Listening Room. You may find that moving your subwoofer(s) by as little as six to eight inches can improve how your subwoofers sound to you. Remember, the safe location that your subwoofer(s) sound best to you is the best location for you. The recommendations in this guide serve as a starting point for subwoofer placement.
- Page 4 PLACE THE SUBWOOFER ON THE FLOOR. If the subwoofer is placed on a stand, bracket, tripod, table or similar device, it could fall or be knocked over causing injury and/or damage to the subwoofer and other items.
- Page 5 However, if the subwoofer’s crossover is set very high, the subwoofer is played at very high levels so that it distorts, or the subwoofer causes a rattle or other sympathetic vibration to occur, it might give away its location.
- Page 6 PLACE Subwoofer Placement Recommendations Guide Place a Single Subwoofer This section provides general recommendations on where to place a single subwoofer in your listening room. You can try placing a single subwoofer in the: 1. Front corner 2. In the center in front of your audio system; or 3.
- Page 7 • One a quarter or one third away from the front of the room on both the right and left sides of the room. RECOMMENDED TWIN SUBWOOFER PLACEMENTS CORNER PLACEMENT Su tlnl Optimum Pos"'oft file f~, ." ",CI ROOM PLACEMENT CORNER PLACEMENT Figure 2: Recommended Twin Subwoofer Corner Placements [ 5 ]...
- Page 8 PLACE Subwoofer Placement Recommendations Guide RECOMMENDED TWIN SUBWOOFER PLACEMENTS QUARTER QUARTER PLACEMENT PLACEMENT OpUlrlum "", Po,ltlo" f.tlper/ut. Figure 3: Recommended Twin Subwoofer Quarter Wall Placements [ 6 ]...
- Page 9 PLACE Subwoofer Placement Recommendations Guide RECOMMENDED TWIN SUBWOOFER PLACEMENTS CENTER FRONT PLACEMENT Optimum ltlo" Best Bass 1/3 ROOM PLlC[MEf'fT CENTER REAR PLACEMENT Figure 4: Recommended Twin Subwoofer Center Placements [ 7 ]...
- Page 10 • One in the center of each wall; or • One in each corner RECOMMENDED QUAD SUBWOOFER PLACEMENTS CENTER PLACEMENT Sutln, Optimum til. POlItIO" lor Figure 5: Recommended Quad Subwoofer Center Placements [ 8 ]...
- Page 11 PLACE Subwoofer Placement Recommendations Guide RECOMMENDED QUAD SUBWDDFER PLACEMENTS CORNER PLACEMENT .. II,,; Optimum iti.,. ", Bu. E.". rl. nu ROOM PlJ.C[MEKT Figure 6: Recommended Quad Subwoofer Corner Placements [ 9 ]...
- Page 12 The room is located near the center of the offices and, hence, has no windows. The room’s two doors and the walkway between them can’t be blocked by subwoofers. Also, access to the storage cabinets can’t be obstructed by a subwoofer. The main listening seat 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.
- Page 13 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 heavy subwoofer onto the seat of the chair, we moved the chair back slightly and put the subwoofer on the floor where the chair normally is.
- Page 14 The evaluator chose a final location near each initial location. 6. We placed a small object at each final location so that later we could locate a subwoofer there and could also test these locations using frequency responses.
- Page 15 Based on the frequency responses, we picked Location 1 as the best place for a single subwoofer because it had the smoothest 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.
- Page 16 Because not everyone has a Digital Drive subwoofer, we will now compare the results from listening to music and looking at frequency responses. This shows that with the “Crawl Test” technique, if you have a good ear for how bass sounds, you can choose the same locations as the more advanced method of viewing frequency response curves.
- Page 17 Subwoofer Placement Recommendations Guide Example of Change in Frequency Response Due to Change in Subwoofer Placement To illustrate how moving the subwoofer can impact the frequency response, we moved the subwoofer in Location 4 towards the center of the PLUS room one foot.
- Page 18 • 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.
- Page 19 Velodyne Acoustics, Inc. 345 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@velodyne.com 63-160 Rev A NOV10...
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