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Owner's Manual
3.3.1 Maximum Loudness Reference 最大的响度参考
This method of speaker calibration references a 0 dBVU meter reading to the loudest
level you want.This is the least technical,most subjective method and is good for
environments where there is such a thing as "too loud"(such as an apartment, school,
orOSHA-regulatedvenue),orwhenacertainlevelof"louder"needstobeattainable
(forexample, for entertaining guests at parties, clubs, and other live venues).
这种扬声器校准方法是将0dBVU的仪表读数引用到你想要的最大声级。这是最
没有技术含量、最主观的方法，适合于有 "too loud " 这种说法的环境（如公寓、
学校或有OSHA规定的场所），或者需要达到一定的 "louder" 水平时（例如，在
派对、俱乐部和其他现场场所招待客人）。
1. "Zero"the Speaker,Main, Cue, and Phones levelsby
turning them fully counterclockwise.
2. Select the TRS1 Main Source and Speaker A selections.
3. Turnyourprimarymonitoringsystem's(connectedtoSpeakerA)inputlevelto
its lowest setting. Consult your monitor system's user manual or manufacturer's
Website formore informationabout adjusting the input or amplification level.
4. Remove all effects processors (such as EQs, compressors, and reverbs)
from the signalpath and play 500 Hz through 2.5 kHz, bandwidth-limited
pink noise at 0 dB through your primary audio-source outputs.If you are
calibrating a subwoofer, use 40 Hz to 80 Hz, bandwidth-limited pink noise.
Youshould not hear the test tone. If you do, turn down
the speaker output and repeat Step 1.
5. IfyouareusinganSPLmeter,panthetesttone sothat
it only plays in the left speaker (hard left).
NOTE:When both speakers play simultaneously, the overall SPL will
increase by about +3 dB. To account for this, subtract 3 dB when
calibrating the left and right channels. (For example, if your overall
acoustic level cannot exceed 90 dB SPL, calibrate each speaker to
reach only 87 dBSPL.)
6. TurntheMainlevel knobonyour CentralStationto
Unity Gain by turning it fully clockwise.
7. In the Passive Speaker Control section, locate the Speaker Trim controls
for L/R Output A. Using a flat-head screwdriver, turn the trim control for
the left channel completely counter-clockwise. Next, slowly turn Speaker
Output A's passive control clockwise. You should begin hearing the test
tone playing through your primary speakers. If the acoustic level reaches
your desired maximum level (as measured by your ears or with an SPL
meter), stop increasing the speaker level and skip step 8. In most cases,
you should not reach your maximum level yet.
8. Begin slowlyincreasing the input sensitivity (volume) ofyour
primary monitoring system's left speaker until the acoustic
level of the test tone reaches the desired maximum SPL.
9. Repeat steps 4 through 8 for the right channel.
Calibration
Calibrating Speaker Levels 3.3
3
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