AudioControl 7.1 Channel THX Ultra 2 Theater Processor, Manual

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Maestro
tm
Phone 425-775-8461 • Fax 425-778-3166
®
Configuration
Section
3-6
4. Level Settings
It is critical to properly match the levels from each speaker
to achieve a correct sound stage. The realism is totally lost
if the footprints of a person walking across the screen
change in volume as they move from left to center to right.
We strongly recommend using a test analyzer such as our
IasysHT or a sound level meter for this calibration. The
levels are nearly impossible to judge by ear alone.
With the internal test noise generator of the Maestro,
adjust each speaker for a sound pressure level (SPL) of 75
dB using a “slow” response time on the SPL meter placed at
the main listening position at ear height. Use the
s
Mode
and
t
Effect buttons on the Maestro to select a speaker
channel, then adjust the volume of that speaker with the
Multi-Function control knob.
The T
T
T T Test T
est T
est T est T est Tone Cycle
one Cycle
one Cycle one Cycle one Cycle setting is normally used on Manual
Manual
Manual Manual Manual.
The A A A A Automatic utomatic utomatic utomatic utomatic option is used for a quick check by ear after
you have manually calibrated the levels. The Automatic
option steps through all the speaker with a two second
burst of test noise. Sitting in the main listening position,
you should not hear any change in volume level as each
speaker is played.
5. Subwoofer Settings
Crossover F Crossover F Crossover F Crossover F Crossover Frequency requency requency requency requency – This controls the frequency at
which bass is redirected from speaker channels set to
“Small” and sent to the Subwoofer outputs. This frequency
is adjustable from 40 Hz to 150 Hz in 10 Hz increments. If
you choose the THX or THX Surr EX in the Speaker Settings
menu, then this crossover frequency is fixed at 80 Hz to
meet the THX specifications and cannot be adjusted.
Stereo Mode Stereo Mode
Stereo Mode Stereo Mode
Stereo Mode – This controls how the subwoofer operates
in the Stereo music modes.
Lar Lar Lar Lar Large ge ge ge ge: All of the stereo audio is passed to the Left and
Right Outputs. Nothing is sent to the Subwoofers.
Lar Lar
Lar Lar Large + Sub
ge + Sub
ge + Sub ge + Sub ge + Sub: Same as above, but bass is also sent to the
Subwoofer. This provides additional punch to the bot-
tom end.
Sat + Sub Sat + Sub
Sat + Sub Sat + Sub Sat + Sub: Provides full bass management when you are
using smaller satellite-type front speakers. The lower bass
Install Note: Install Note:
Install Note: Install Note:
Install Note: It may not be possible
to achieve 75dB with non-THX certified
speakers. If this happens, set the Left
Speaker Level Setting to 0dB and measure the
SPL of the Left Speaker. Now step through the
other speaker channels and match their SPL
readings to that of the Left speaker.
4 - Level Settings
Test Tone Cycle: Manual
Front L: ---I--- +0dB
Center: ---I--- +0dB
Front R: ---I--- +0dB
Surr. R: ---I--- +0dB
Surr. BR: Not Present
Surr. BL: Not Present
Surr: L: ---I--- +0dB
Subwoofer: ---I--- +0dB
Select Speaker for Tone
5 - Subwoofer Settings
Crossover Freq.: 80Hz THX
Stereo Mode: Sat+Sub
LFE Level: ---I--- -0dB
DTS LFE Gain: 0dB Normal
Sub Stereo: ---I--- -0dB
DVD-A Sub Level: Normal
No. of Subwoofers: 1