Chapter 9 | SV Sound |
|
|
Advanced Features: Room Compensation
In typical home theaters a phenomenon known as ―room gain” can play a major role in how accurately bass is produced.
When any subwoofer produces notable bass energy below 27Hz, the output you will perceive is different than the sub’s normal output would be (if unaf- fected by your room’s walls).
The difference in theoretical bass, versus actual bass response, is depicted in the graph below. The red trace indicates a subwoofer response outdoors, but line in blue indicates the same subwoofer’s response in a
―Room gain‖ can create excessive deep bass which can sound exaggerated simply due to interaction with your room .
|
|
|
| SPL vs Freq |
|
|
|
|
|
| |
| 115 dBSPL |
|
|
|
|
|
|
|
|
| |
| 110 |
|
|
|
|
|
|
|
|
|
|
| 105 |
|
|
|
|
|
|
|
|
|
|
| 100 |
|
|
|
|
|
|
|
|
|
|
| 95 |
|
|
|
|
|
|
|
|
|
|
| 90 |
|
|
|
|
|
|
|
|
|
|
| 85 |
|
|
|
|
|
|
|
|
|
|
| 80 |
|
|
|
|
|
|
|
|
|
|
| 75 |
|
|
|
|
|
|
|
|
|
|
| 70 |
|
|
|
|
|
|
|
|
|
|
| 65 |
|
|
|
|
|
|
|
|
|
|
| 60 |
|
|
|
|
|
|
|
|
|
|
| 55 |
|
|
|
|
|
|
|
|
|
|
| 10 Hz | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | |
Map |
| 6: Anechoic |
|
|
|
|
|
|
|
|
|
| 7: 2800ft^3 |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
| |
Notes |
|
|
|
|
|
|
|
|
|
|
|
|
| Enclosure | Person: Jim Farina |
| Project: Room Compensation |
| Jul 18, 2006 |
|
|
| |
5.2.0.350 | Jul/15/2005 | Shop | Company: SV Sound, LLC |
| File: Room Compensation.led | Tue 4:42 pm |
|
|
| ||
Use the below chart to help tailor your SVS sub to your room’s size. Vary the room size knob up or down one size should you determine that sound’s best for your music and movies. Bypass mode is deepest of all and most suitable for the largest rooms.
Approximate Room Size | Room Compensation Setting | |
|
|
|
> 2400ft3 | (68m3) | LARGE |
1400ft3 – 2400ft3 | (40m3 – 68m3) | MEDIUM |
< 1400ft3 | (40m3) | SMALL |