Room Equalization Procedure
Subwoofer performance is greatly af- fected by the room in which it is situated, and the positioning within the room. The room effects will boost and cut the output levels reaching your listening position. This gives a "room EQ" effect which can often be far from wonderful.
The SubRosa EQ system can auto- matically adjust for the effects of room EQ. It measures the actual frequency response using the supplied measure- ment microphone. Then it automati- cally compensates for peaks or dips and smooths out the response.
For best results it is recommended that the subwoofer crossover in your receiver or processor be set to its maximum set- ting (or “bypass”). This ensures that the subwoofer will be properly matched to the rest of the speakers in your system.
The following procedure will help you start the automatic equalization:
Automatic EQ Mode
1.Install the subwoofer in the best location you can find, using the procedure on the previous page.
2.The calibration must be done while the listening room is quiet. Please turn off any noisy machinery, including heating or cooling systems during this process.
Have the kids play in the backyard and give the dog a treat to stop him barking. A small amount of noise, such as quiet talking or whispering, is OK.
3.Place the microphone in the listening position (on the couch, for example), pointing in the direction you’ll normally be facing while listening to your system. Only use the microphone supplied.
4.Plug the microphone into the subwoofer amplifier's microphone jack.
5.Set these controls:
•Volume to 0 dB.
•Crossover to "Bypass."
•Phase to "Normal."
•Equalizer Authority to "Normal"
6.Turn on the amplifier's power switch and press the Start button to go from standby to play mode. Press Start again to start the calibration.
7.The subwoofer will generate a test tone sweep, slowly increasing up the fre- quency scale; the microphone will take measurements of the sound arriving at your listening position. The LEDs will flash randomly for a while, then the pairs will gradually glow constantly as each band is measured (from left to right).
This sequence will repeat twice until the measurements are complete. The LEDs will all blink once and stay on, and the test tones will stop.
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User's Manual
