JBL Room Mode Correction User Manual page 22

3. Turn all speakers on and perform level calibration of all channels.
• To conform to cinema standard used to playback movies and DVDs, an input
signal -20 dBFS (Full Scale) should produce 85 dB SPL from each individual
satellite and 95 dB SPL from the subwoofer. A +10 dB gain switch is provided on
the LSR6312SP SUB
DIRECT IN which can be used to conform to this gain structure.
• If you are listening to music, you may wish to calibrate the sub without the 10 dB
boost to produce the same SPL as each of the satellites.
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