Technics SH-AC500D Operating Instructions Manual page 13

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Delay time adjustments
By adjusting the detay time, the difference in the distance from the
vtewing and listening posilion to the front speakers and the distance
to the center speaker and surround speakers can be offset and
made equal This achieves better sound localization and makes a
more life-like reproduction of the sound field possible
] Press SURROUND to select the surround
mode.
"SURROUND" appears on the display
] Press DELAY to select the channel to be
adjusted. I
Each time the button is subsequently pressed, the channel
whose delay time is to be set is selected alternately: _=
C (Center speaker) _ S (Surround speakers) _=
For each channel, the delay time is displayed, and the __
speaker indicator for the corresponding speaker flashes.
The display is restored if a button isn't pressed for 4 or more
seconds.
Speakers for which NONE has been set are skipped.
[] Press [-] or [+] to set the delay time.
When the button is pressed, the current delay time is
displayed. Each time the button is pressed, the delay time will
change The delay time increments are different depending
on the speaker as follows.
Speaker Available delay time setting (ms)
Center 0. 1,2, 3, 4, 5
Surround 0, 5, 10, 15
"It F
\
D, _ 03
\
\\
Surround
speaker _ _
/" DI
/
Surround
speaker
Please note the following if delay time is adjusted while playing
back a source:
Adjustment is not possible if the source is DTS format.
While the r]rl PRO LOGIC indicator is alight, the center channel
cannot be adjusted and 15 ms are added to the delay times listed
for the surround channel when displayed
[
To calculate the
delay time [] }
D_: Distance from front speaker
Dz: Distance from surround speaker
D_: Distance from center speaker
Setting the center channel delay time:
If D_ is equal to or Set to 0 ms
less than D3
,If D_ less than D, Increase 1 ms for every 30 cm (1 feet) of
difference between D_ and D3
Setting the surround channel delay time:
If D_ is equal to or Set to 0 ms
less than D2
Start at 0 ms and increase by S ms for
If D2 is less than D_
every 1 5 m (5 feet) of difference
between D_ and Dz