Kenwood KR-V8090, KR-V9090 TEsT, Lch, What is delay time?, How to calculate the proper delay time

4Adjust the speaker volume.

1Press to select TEST TONE.

SETUP

2Adjust the level of the speaker emitting the test tone. Each speaker should pro- duce the test tone at the same volume level as the front speakers.

TUNING/SKIP

To increase

To decrease

5Adjust the delay time.

1 Calculate the delay time suitable for your listening room (see below).

2Press to select delay time.

SETUP

3Adjust the delay time.

TUNING/SKIP

To increase

To decrease

4Press SETUP again to quit.

5Press VIDEO once to return the remote to

its original operating mode.

VIDEO

Preparing for surround sound

KR-V9090/8090 (En/T)

1 5

					TEsT		L	SURROUND
				Initial display when the test tone is selected
• The buzzing test tone moves once every 1.5 seconds.									Preparations
		1			"TEST L"	: Front speaker, left channel.
	2				"TEST C"	: Center speaker.
	3				"TEST R" : Front speaker, right channel.
	4				"TEST RS" : Surround speaker (right).
			5		"TEST LS" : Surround speaker (left).
• For KR-V8090 the “TEST RS” and “TEST LS” displays are replaced by
	“TEST S” and the test sound is emitted from the right and left surround
	speakers simultaneously.
					Lch		+2￿	dB SURROUND

Display when the test tone is output from the left speaker

•Be sure to adjust from your listening position.

•The volume is adjusted in 1dB steps each time you press the TUNING/ SKIP +/– keys.

•The volume levels can be adjusted in the range from –10 dB to +10 dB.

--- ￿ 15 SURROUND

Display when delay time is selected

•The delay time can be adjusted in the range from 15 ms to 30 ms, in 5 ms steps.

•This adjustment is also possible with the LEVEL CONTROL key of the main unit.

What is delay time?

The sound entering the ears include the direct sound coming from the sound source and the indirect sounds reflected from the walls, floor, ceiling, etc. The indirect sounds are delayed because they travel longer distance required for reflection before they reach the ears. The delay time is the difference in time between the direct sound and indirect sounds.

•The input selector does not change the first time you press the VIDEO key.

How to calculate the proper delay time

Assuming that the distance from the front speaker is A meters and the distance from the surround speakers is B meters

Front

speakers

Am

Bm

Surround speakers

1Use the delay time calculation chart on the right. Example: When A = 3 m, B = 3 m, the delay time is 20 ms.

2Use the following formula for calculation. Delay time = 20 + 3 x (A - B) (Unit: ms)

		23	20	17
	26		20
		23		16
	29		20	17
	26	23		16
	29		20	17
	26	23		16
	29		20	17
8	26			16	8
	29	23	20	17
7
	26	23		16	7
6	29		20	17	6
5	26	23		16	5
	4			17	4
A (m)	3		20	3	B (m)
	2	1		2
				1