Bass Management
3
The “General Settings” section sets global parameters for the
Bass Management system.
<On/Off – Bass Management is only active when the “On” radio button is
selected. If the “Off” radio button is selected, all parameters of the Bass
Management system will be deactivated.
<Volume – This vertical slider adjusts the overall output level of all speakers at
once. The output level of your interface is listed in “dB relative to full-scale” next
to the fader. This means that the loudest possible output level (i.e., when the fader is at the top) is referred to as “0dB”
and a signal that is, for example, 12dB lower than the maximum loudness is referred to as “-12dB.”
<PCM Limit – When re-routing low frequency sounds from all of the satellite speakers to the subwoofer, it becomes
possible to exceed the available headroom of the subwoofer channel. This will result in digital clipping (distortion). When
the “PCM Limit” box is checked, the Bass Management system momentarily attenuates (reduces) the output volume
when the signal exceeds the available digital headroom to prevent clipping.
<Mute – This box mutes the output of all the speakers when checked.
The “Sub Channel” section contains volume and phase
controls for the subwoofer channel.
< Boost (dB) – This horizontal slider can be used to increase or decrease the
subwoofer loudness by up to 12 dB in relation to the main channels. This is
used to fine-tune the subwoofer level in relation to the rest of your speakers.
<LFE +10dB – The subwoofer output is increased by an additional 10dB when
this box is checked. The LFE output is left unaffected when the box is unchecked.
<Clip – The Clip indicator is located next to the Boost slider and turns red when
output to the subwoofer is too loud and is “clipping” or distorting.
<+180° – This option inverts the phase of the
signal sent to the subwoofer. Check the
box to invert the subwoofer’s signal; leave
the box unchecked to let the signal pass
unaffected.
•To set the +180° checkbox:
First, leave the box unchecked and listen to your sound system. Next, check the box and continue listening. If you
notice that the bass level increases when you check the box, leave the box checked. If the bass level decreases,
then leave this box unchecked. If you hear no difference between the two settings, your speakers are placed in a
way in which the setting of this box will not affect your monitoring system.
TIP: Check this box for correct
monitoring of Dolby Digital
soundtracks. Leave the box
unchecked while monitoring
DTS encoded material, or if
subwoofer output has been
boosted at another point in the
subwoofer’s signal path.
TIP: When making any
adjustments to the Boost controls,
keep an eye on the Clip indicator. If
it turns red, adjust the Boost slider
setting until the subwoofer output
no longer clips.
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