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- 15 - SDEC -X000 DACS Calibration Manual v1.0.doc
6.3.4 Channel Output
Use each output to adjust each channel to give the same output level using an SPL meter.
6.3.5 Level Matching Multiple Surround and Subwoofer Channels
The SDEC-4000 has multiple outputs for Subwoofers and Side Surrounds. These will need to be level matched to each other before
final output levels are set.
1. Using the internal noise test of the SDP test each output individually. It will be necessary to mute the output you are not testing.
Make sure the Trim Link is off (not RED).
2. Once you have set each to the reference level (75dB) enable the Trim Link feature so that the led turns RED.
3. With all the multiple channels un-muted test together and adjust the output to reach the same reference level. You will now have an
output that has all the multiple channels level matched and the overall output set to the reference level.
Figure 14.