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.
SETUP
1INPUT SETTINGS
2CHANNEL BALANCE
3CHANNEL DELAYS
4SPEAKER SETTINGS
5EXIT
CHANNEL DELAYS
CENTER 3ms
REAR 6ms
DO NOT SAVE AND EXIT SAVE AND EXIT
CHANNEL DELAYS
CENTER 0mS
REAR 0mS
DO NOT SAVE AND EXIT SAVE AND EXIT
To calculate these delay times, first 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.
front |
| centre |
left |
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e.g. 4m |
| e.g. 3m |
(12ft) |
| (9ft) |
e.g. 2m
(6ft)
rear
left
front right
rear right
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.
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) |
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| = 3ft or 1m | 3 milliseconds | |
REAR delay | (12 – 6ft) or (4 – 2m) |
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| = 6ft or 2m | 6 milliseconds | |
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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.
CHANNEL DELAYS
CENTER N/A
REAR 21ms
DO NOT SAVE AND EXIT SAVE AND EXIT
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| NOTE: It is not necessary to adjust delay times for a DTS | |
AVR100 | |||
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