Arcam surround sound receiver AVR100 - Manual (Page 8)

AVR100
8
1 INPUT SETTINGS
2 CHANNEL BALANCE
3 CHANNEL DELAYS
4 SPEAKER SETTINGS
5 EXIT
SETUP
CENTER 0mS
REAR 0mS
DO NOT SAVE AND EXIT
SAVE AND EXIT
CHANNEL DELAYS
centre
e.g. 3m
(9ft)
e.g. 4m
(12ft)
e.g. 2m
(6ft)
rear
left
rear
right
front
left
front
right
Distance to listening position e.g. Your measure
Front left or right 12ft or 4m ---------------------
Centre 9ft or 3m ---------------------
Rear left or right 6ft or 2m ---------------------
Difference e.g. Delay (ms)
CENTRE delay (12 – 9ft) or (4 – 3m)
= 3ft or 1m 3 milliseconds
REAR delay (12 – 6ft) or (4 – 2m)
= 6ft or 2m 6 milliseconds
CENTER 3ms
REAR 6ms
DO NOT SAVE AND EXIT
SAVE AND EXIT
CHANNEL DELAYS
CHANNEL DELAYS
CENTER N/A
REAR 21ms
DO NOT SAVE AND EXIT
SAVE AND EXIT
Channel delays page
For best results in a surround sound system, the sound from
all loudspeakers should reach the listener at the same time. To
help achieve this the AVR100 can add slight delays to certain
channels when in Dolby Digital or Dolby Pro Logic modes.
When playing a Dolby Digital source you can set a delay for
the centre channel of between 0 and 5ms and a delay for the
rear channels of between 0 and 15ms.
To calculate these delay times, fi rst measure (or estimate) the
distances from the listening position to the front, centre and
rear speakers. Keep a record of these distances by entering
them under the heading ‘Your measure’ in the table provided.
The centre channel delay is calculated by subtracting the centre
channel distance from the front left (or right) distance. The
difference represents the
CENTRE delay time.
The rear channels’ delay time is calculated by subtracting the
rear left (or right) distance from the front left (or right) distance.
The difference represents the
REAR delay time. Note that if your
rear loudspeakers are further from the listening position than
the front loudspeakers, you should set this delay to
0ms .
If you have made your measurements in feet, one foot
approximates to one millisecond (1ms) delay. If you have made
your measurements in metres, one metre approximates to three
milliseconds (3ms) delay.
When playing a Dolby Pro Logic source you can set a delay
for the rear channels between 15 and 30ms. There is no delay
setting for the centre channel.
The rear channel delay in Dolby Pro Logic is calculated by
adding 15ms to the rear channel delay calculated for Dolby
Digital. In our example, this is 15ms + 6ms = 21ms.
NOTE: It is not necessary to adjust delay times for a DTS
(Digital Theater Systems) source.