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 measurement’ 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.
front | centre | front | |
left | right | ||
| |||
|
|
|
e.g. 4m |
| e.g. 3m |
(12ft) |
| (9ft) |
e.g. 2m
(6ft)
rear | rear |
left | right |
Distance to listening position | e.g. | Your | |
|
|
| measurement |
Front left or right | 4m or 12ft | ||
Centre | 3m or 9ft | ||
Rear left or right | 2m or 6ft | ||
Difference | e.g. | Delay (ms) |
CENTRE delay | (4 – 3m) or (12 – 9ft) |
|
| = 1m or 3ft | 3 milliseconds |
REAR delay | (4 – 2m) or (12 – 6ft) |
|
| = 2m or 6ft | 6 milliseconds |
When playing a Dolby Pro Logic or Dolby Pro Logic II source you can set a time delay (in milliseconds) for the rear channels. 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
REAR21ms
DO NOT SAVE AND EXIT SAVE AND EXIT
AVR200
10
