SVS PB12-Plus - Manual (Page 33)

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SVSound ™ STA-800D/1000D Equipped Subs
Room Compensation
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 40Hz, the output you will perceive is different
than the sub’s normal output would be (if unaffected by your room’s walls).
The difference in actual bass, versus theoretical (quasi-anechoic/anechoic) bass response, can be thought
of as rising SPL levels in the room as frequency decreases. The smaller the room, the more room gain comes
into play – e.g. louder levels as frequency decreases as compared to larger spaces where the effect is less
noticeable. Room gain can create excessive deep bass which can sound exaggerated simply due to interac-
tion with your room.
If you find your bass is excessive and lowering the level of the subwoofer using the subwoofer trim in your
AVR or pre/pro does not have the desired effect, you should try using the Room Compensation control in
your STA-1000D amplifier. To enable and adjust your Room Compensation control, see the section earlier in
this manual on the Integrated Function Controller (IFC).
Use the table below as a guide to select the appropriate Room Compensation corner frequency for your
specific listening environment.
To rapidly roll off the lower frequencies below the selected corner frequency, select -12 dB per octave slope.
For a more gradual roll off, select -6 dB per octave slope. For example if the corner frequency selected is
40Hz, the subwoofer output level would be down 12 dB at 20Hz if -12 dB was selected, or down 6 dB at
20Hz if -6 dB was selected.
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FIG. 17