Specifications

5.1-Channel Production Guidelines Production Environment
3-19
For example, if the monitoring system consists of five satellite speakers and a
subwoofer, redirect the low frequencies from the five main channels to the subwoofer
output. If using small Center and Surround speakers, direct the low frequencies from
those channels to the Left, Right, or subwoofer outputs. If no subwoofer is available,
redirect the LFE channel to the Left and Right channel outputs. Bass redirection can
be accomplished in either a Dolby Digital decoder or by using an external dedicated
bass management box.
3.4.5 Individual Level Calibration
There are typically two types of pink noise available for speaker/channel calibration:
pink and filtered. For setting relative levels, filtered noise is recommended, as any
room anomalies will not be factored into the level calibration process. For spectral
balance of each channel, pink noise is used with an RTA to adjust the system for
proper frequency response.
3.4.6 Subwoofer Calibration
Ideally, the test noise used for subwoofer calibration should be band-limited pink noise,
low-pass filtered at 120 Hz. To properly calibrate the subwoofer, an RTA is required. If
an RTA is not available, you can approximate the settings with an SPL meter.