AV123 x-cs, Руководство по использованию

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Calibration
Calibrating your speaker levels will ensure that the effort you’ve taken to correctly
position the speakers themselves will pay off when you finally sit down to enjoy them.
SPL Measurements
To accurately calibrate levels, you’ll need an SPL meter. Radio Shack
sells a digital meter that works very well for this purpose (P/N 33-2055)
and it’s about $50. Set the meter on ‘slow’ and “C” weighting. The dial
should be set at either 70dB or 80dB depending on your preamplifier/
processor or receiver’s test tone reference output level. Consult your
owner’s manual to determine what reference point your unit uses (most
use 75dB, so the 70dB setting on the meter would be appropriate in
that example). Each range setting on that particular meter will cover
20dB (10dB above and 10dB below). So a setting of 70dB would cover
between 60dB-80dB range. If you are using another meter, consult the
owner’s manual for proper operation.
Configuration and Reference Settings
1) Begin by reviewing the calibration menu settings of your receiver or preamplifier/
processor. In the speaker configuration menu (as a part of the set-up on your HT
processor), be sure all your speakers are set to “SMALL” with subwoofer to “YES”.
(Please note that many processors require a “SMALL” setting for the main speakers
to allow the LFE subwoofer output function, otherwise bass is directed to the front
channels with the full energy when the speakers are set to “LARGE”)
2) From the processor’s speaker calibration menu, set the subwoofer output level to 0
dB. (Start with the gain on the x-sub subwoofer at about 1/4 of max. and make sure
the power switch is in the “ON” position. The signal sensing Auto ON circuit will switch
the amplifier in the x-sub on automatically)
3) The crossover on the x-sub should be set between 80Hz or 100Hz as a starting point
unless you have used the LFE (Subwoofer Input) - in which case the crossover will be
bypassed. After matching the level in Step 6, experiment with what you prefer on the
x-sub. Typically, higher crossover settings are used for systems in extremely large
rooms or with very demanding low end material.
Setting Reference Levels of Full Range Speakers
4) Set the volume control on your receiver to the “00dB” level. If your unit uses a
positive number scale for volume instead of a minus-to-plus scale, just watch the
meter until it reaches 75dB or 85dB (depending on the recommended reference level
of 70dB or 80dB in the receiver or preamplifier/processor’s owner’s manual).
Radio Shack
Digital SPL
Meter