Ambience effects

C-V750 (En/T)

How to calculate the proper delay time

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

What is delay time?

Front speakers

Am

Bm

Surround speakers

1Use the delay time calcula- tion chart on the right.

Example:

When A = 3 m,B = 3 m, the delay time is 20 ms.

2 Use the following 8

7

formula for calculation. 6 5

Delay time =

A (m)

20 + 3 × (A - B) (Unit: ms)

 

23

20

17

 

37

 

 

 

26

23

20

16

 

29

 

17

 

 

26

23

20

16

 

 

29

 

17

 

 

26

23

20

16

 

 

29

20

17

 

 

26

23

16

 

8

29

20

17

 

26

23

 

16

 

7

29

 

17

 

6

26

 

20

16

 

5

4

23

 

17

 

4

3

 

20

 

3

B (m)

2

 

 

2

 

 

1

 

1

 

 

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.

3Adjust the level from each speaker. “Test Tone”

Main unit

GRC

1Output the ”Test Tone“.

(Remote control only)

Test Tone

 

ENTER

 

Test Tone

 

ENTER

2Adjust the levels of the other speakers than the front speakers (left, right). (1)While test tone is output from a speaker, (2)Adjust the volume level of the speaker.

ChannelLevel

To decrease

SL+10dB

To increase

level

ENTER

level

3Quit the speaker level adjustment.

Test Tone

ENTER

Return

ENTER

ÖThe test tone which sounds like noise move across speakers in the following sequence every 1.5 second.

(In Pro Logic or AC-3 mode)

 

 

 

TEST Lch

(Front speaker, Left)

 

 

 

 

 

 

TEST Cch

(Center speaker)

 

 

 

TEST Rch

(Front speaker, Right)

 

 

 

TEST SRch

(Surround speaker, Right)

 

 

 

TEST SLch

(Surround speaker, Left)

 

 

 

TEST SWch

(Subwoofer)

 

 

 

 

(In 3 STEREO mode)

 

 

 

TEST Lch

(Front speaker, Left)

 

 

 

 

 

TEST Cch

(Center speaker)

 

 

 

TEST Rch

(Front speaker, Right)

 

 

 

TEST SWch

(Subwoofer)

 

 

ÖThe test tons is not output from the speaker which has been set to off.

Speaker setupr

T E s T s Rc h

Display when test tone is output from a surround speaker

ÖBe sure to adjust from the listening position.

ÖEach press of the key increases or decrease the level by 1 dB.

ÖThe levels of the front speaker (Left, Right) cannot be varied in step 3.

4Adjust the delay time. “DELAY”

Main unit

GRC

1Select the Delay Time adjustment dis- play.

MODE MU

Delay Time

ENTER

2Adjust the Delay Time.

MULTI.CONTROL

Delay Time

 

 

LEVEL

 

 

20msec

 

 

 

To decrease

To increase

To decrease

To increase

 

 

ENTER

3Quit the delay time adjustment.

Return

ENTER

Main unit

Each press switches the adjustment items as shown below.

1 BASS

:Tone, Bass

2 TREBLE

:Tone, Treble

3L- - - - - - -R :Balance

4 C ch

:Center speaker

5SR ch :Surround speaker, Right

6 SL ch

:Surround speaker, Left

7 SW ch

:Subwoofer

8 DELAY

:Delay time

9 INPUT

:Input level

ÖAdjustment items 5, 6 and 8 are not required in the 3 STEREO mode.

ÖFind the optimum delay time for the listening room by referring to “How to calculate the delay time”.

ÖThe delay time in the PRO LOGIC mode can be adjusted between 15 and 30 ms.

ÖThe delay time in the AC-3 mode is automatically decreased by 15 ms from that set in the PRO LOGIC mode.

ÖSelect the closest value to the value obtained by “How to calculate the delay time”.

D E L A Y

 

2 ) ms

 

 

Delay time