Pioneer SC-LX85 - Manual (Page 84)

adjust the distance to the speakers (their posi-
tion) with a precision of under 1 cm. Here,
rather than correct the numerical value of the
distance, actually move the physical positions
of the speakers to fine-adjust (the subwoofer
cannot be adjusted). The input from the micro-
phone is indicated on the screen. Fine-adjust
the positions of the speakers so that the gauge
reading is maximum. The detailed distance
adjustments that were previously performed by
skilled installers by ear can easily be performed
watching the gauge on the monitor. Place the
microphone in the same position as when the
microphone was connected and the Full Auto
MCACC operation was performed.
1 Select ‘Precision Distance’ from the
Manual MCACC setup menu.
2 Fine-adjust the positions of the
speakers in sequence, starting from the
front right channel.
Test pulses are output from the speaker for the
selected channel and from one other speaker.
Move the position of the selected speaker 1 cm
towards or away from the microphone. Watch
the screen when doing so, and fine-adjust the
positions of the speakers so that the gauge
reading is maximum. Also, the channel serving
as the standard differs according to the channel
being adjusted. Do not move the speaker serv-
ing as the standard channel.
The maximum gauge reading is 10.0. (If the
reading stays under 10.0, adjust the speaker for
the maximum value.)
! If the microphone is placed in a different
position from when the Full Auto MCACC
or Auto MCACC procedure was performed,
it may not be possible to adjust properly. In
this case, we recommend performing the
procedure at Fine Speaker Distance on page
82 in the Manual MCACC measurements,
then performing the adjustment described
here without moving the microphone.
! The adjustment here is for adjusting for
an error of 1 cm or less (not adjustable
with the Auto MCACC Setup). 0.0 may be
displayed after distance correction with the
Auto MCACC Setup, but even in this case
this adjustment allows you to optimize the
correction. Note that if the Auto MCACC
Setup is performed after completing the fine-
adjustment here, the correction precision will
drop to about 1 cm.
! Like with the Auto MCACC Setup, perform
this adjustment in as quiet an environment
as possible. 0.0 will be displayed if abrupt
noise is input during the adjustment.
! The distance for all the channels can only
be made uniform even if the R (front right)
channel is adjusted in the proper order.
! Be very careful not to tip the speakers over
when moving them.
! The result of the adjustment performed
here can be checked by listening to the test
pulses output at the Precision Distance (the
test pulses will be more centrally positioned
between the speakers than before the
adjustment was performed). Be careful not to
change the distance values at this time.
3 When you’re finished, press RETURN.
You will return to the Manual MCACC setup
menu.
En 84
12 The Advanced MCACC menu
3 If you selected ‘Reverb Measurement’,
select EQ ON or EQ OFF, and then START.
The following options determine how the reverb
characteristics of your listening area are dis-
played in Reverb View:
! EQ OFF – You will see the reverb
characteristics of your listening area without
the equalization performed by this receiver
(before calibration).
! EQ ON – You will see the reverb
characteristics of your listening area with the
equalization performed by this receiver (after
calibration). Note that the EQ response may
not appear entirely flat due to adjustments
necessary for your listening area.
— The calibration corresponding to the
currently selected MCACC preset will be
used when EQ ON is selected. To use
another MCACC preset, press MCACC to
select the MCACC memory you want to
store.
— After auto calibration with EQ Type
: SYMMETRY (Full Auto MCACC,
etc.), the graph for the inferred reverb
characteristics can be displayed by
selecting Reverb View. To display the
actually measured reverb characteristics
after EQ calibration, measure with
EQ ON.
When the reverb measurement is finished,
you can select Reverb View to see the results
on-screen. See Professional Calibration EQ
graphical output on page 98 for troubleshooting
information.
4 If you selected ‘Reverb View’, you can
check the reverb characteristics for each
channel. Press RETURN when you’re done.
The reverb characteristics are dis-
played when the Full Auto MCACC or
Reverb Measurement measurements are
conducted.
Use
k/l to select the channel, frequency
and calibration setting you want to check. Use
i/j to go back and forth between the three.
The reverb characteristics graph before and
after EQ calibration can be displayed by select-
ing Calibration : Before / After. Note that the
markers on the vertical axis indicate decibels in
2 dB steps.
5 If ‘Advanced EQ Setup’ is selected,
select the MCACC memory to be stored,
then enter the desired time setting for
calibration, and then select START.
! To specify the place where the MCACC
memory is to be stored, press MCACC to
select the MCACC memory you want to store.
Based on the reverb measurement above, you
can choose the time period that will be used for
the final frequency adjustment and calibration.
Even though you can make this setting without
reverb measurement, it is best to use the mea-
surement results as a reference for your time
setting. For an optimal system calibration based
on the direct sound coming from the speakers,
we recommend using the 30-50ms setting.
Use
k/l to select the setting. Use i/j to
switch between them.
Select the setting from the following time
periods (in milliseconds): 0-20ms, 10-30ms,
20-40ms, 30-50ms, 40-60ms, 50-70ms and
60-80ms. This setting will be applied to all
channels during calibration.
When you’re finished, select START. It will take
about 2 to 4 minutes for the calibration to finish.
After the Acoustic Calibration Equalization is
set, you are given the option to check the set-
tings on-screen.
Precision Distance
SC-LX85 only
Before using this function, perform the Full
Auto MCACC Setup procedure (see page 34).
Performing the Full Auto MCACC procedure
corrects the distance to a precision of 1 cm,
but the Precision Distance function lets you