Alpine Multimedia Manager PXA-H900 Owner's Manual download pdf (Page 29)

25-EN

• Concrete examples

1. Calculating the time correction value for the front left speaker on the diagram below.

Conditions:

Distance between farthest speaker and listening position: 2.25 m (88-3/4")

Distance between front left speaker and listening position: 0.5 m (20")

Calculation: L = 2.25 m (88-3/4") – 0.5 m (20") = 1.75 m (68-3/4")

Compensation time = 1.75 ÷ 340 x 1000 = 5.1 (ms)

In other words, setting the time correction value for the front left speaker to 5.1 (ms) sets a

virtual distance matching the distance to the farthest speaker.

★

0.5m

(20")

2.25m

(88-3/4")

★

5.1ms

The sound is uneven because the distance

between the listening position and the

different speakers is different.

The difference in the distance between the

front left and rear right speakers is 1.75

meters (68-3/4").

Time correction eliminates the difference

between the time required for the sound

from the different speakers to reach the

listening position.

Setting the time correction of the front left

speaker to 5.1 ms makes it possible to

coordinate the distance from the listening

position to the speaker.

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Alpine Multimedia Manager PXA-H900 Owner's Manual Page 29