JBL CVPD50, CVR700 manual Speaker Distances, Output Level Adjustment

cursor is next to the SUBWOOFER line, and then press the ‹/› Navigation Controls q 6 until the name of the speaker group with the desired crossover frequency appears. Of course, you may also experiment with dif- ferent settings to find the one that pro- vides the smoothest and most complete bass response in your particular listening environment.

* S P E A K E R C R O S S O V E R S *

› F R O N T : 9 0 H z C E N T E R : 9 0 H z

S I D E S U R R O U N D S : 9 0 H z

B A C K S U R R O U N D S : 9 0 H z

S U B W O O F E R : 9 0 H z

R E S E T T H E S E S E T T I N G S ?

B A C K T O S P E A K E R S M E N U

Figure 22

Speaker Distances

Due to the different distances between the listening position and each speaker position, the amount of time it takes for sound to reach your ears from each chan- nel is different. You may compensate for this difference through the use of the dis- tance settings to adjust the timing for the speaker placement and acoustic condi- tions in your listening room or home the- ater. The CVR700’s advanced software enables you to quickly and easily set delay times without the need to calculate them using a complex formula. Instead, all you need to do is measure the approx- imate distance between your listening position and each of the speakers in your system. When you enter those distances into the CVR700’s memory as shown below, the CVR700’s microprocessor does the rest of the work, calculating the proper delay time. The measurements need not be accurate to the inch, as the system is designed to accommodate a typical lis- tening area rather than require the pre- cise measurement to one “sweet spot” position.

Due to the differences between the way surround modes operate, some modes allow for a greater range of delay times than others. To avoid problems, we rec- ommend that delay times be adjusted using the Dolby Digital mode. It may be necessary to play a Dolby Digital disc so that the CVR700 can process the signal and make the DISTANCES submenu accessible. If a different mode is selected at a later time, the CVR700 will automati- cally select the closest delay settings available for the surround mode in use.

Delay times are adjustable only for the Dolby and DTS modes, so you will notice that the DISTANCES menu may not be accessed for other modes, such as Logic 7. In addition, when a non-Dolby Digital mode such as Dolby 3 Stereo or Dolby Pro Logic II is selected, adjust- ments may be made to the Surround speakers only. To set the delay time for a specific input, you will need to access the SPEAKER DISTANCES submenu (Figure 23). With the SPEAKERS sub- menu (Figure 20) on screen, scroll down to the DISTANCES line and select it. Note that this line will not be available if the audio surround mode for the current source was not set to a Dolby mode. You may need to return to the SOURCES submenu (Figure 10) and select a Dolby audio mode before adjusting the distance settings.

* S P E A K E R D I S T A N C E S			*
› F R O N T :	1 0	F T
C E N T E R :	1 0	F T
S I D E S U R R O U N D S : 1 0			F T
B A C K S U R R O U N D S : 1 0			F T
U N I T O F	M E A S U R E : F E E T
R E S E T T H E S E S E T T I N G S ?
B A C K T O	S P E A K E R S M E N U

Figure 23

Once the SPEAKER DISTANCES submenu (Figure 23) is on your screen, note that the default unit of measure for distance settings is feet. If your measure- ments are in feet, proceed to the next step; if your measurements are made in meters, press the ⁄/¤ Navigation Controls q 4 until the on-screen› cursor is at the UNIT OF MEASURE line on the menu. Then, press the ‹/› Navigation Controls q 6 so that METER is highlighted. When the change in measurement units is made, press the ⁄/¤ Navigation Controls q 4 to return the ›cursor to the FRONT position. With the on-screen› cursor pointing to FRONT, press the ‹/›Navigation Controls q 6 until the distance from the front left and right speakers to the preferred listening position is entered. Next, scroll down to the CENTER line and enter the dis- tance from the main listening position to the center speaker. Repeat the procedure for all active speaker positions. Note that only the speaker positions that have been set to LARGE or SMALL in the

SPEAKER CONFIGURATION

submenu (Figure 21) may be adjusted. The appearance of five dashes next to a

speaker position in place of a distance setting indicates that you have not config- ured an active speaker for that location.

When the delay time for all speaker posi- tions has been set you may return to the master menu by scrolling to BACK TO MASTER MENU and then pressing the Set Button s 7 . However, if you have a digital video source or a digital video display that causes lack of lip sync you may use the Lip Sync adjust feature to delay the audio signal as it is sent to all channels (as opposed to the individual settings) so that the picture and sound are brought back together. That adjust- ment is available in the LIP SYNC submenu of the MAIN MENU, and will be described on page 53.

Output Level Adjustment

Output level adjustment is a key part of the configuration of any surround sound product. It is particularly important for a digital system such as JBL Cinema Vision, as correct outputs ensure that you hear soundtracks with the proper direc- tionality and intensity.

IMPORTANT NOTE: Listeners are often confused about the operation of the sur- round channels. While some assume that sound should always be coming from each speaker, most of the time there will be little or no sound in the surround channels. This is because they are only used when a movie director or sound mixer specifically places sound there to create ambience, a special effect or to continue action from the front of the room to the rear. When the output levels are properly set, it is normal for surround speakers to operate only occasionally. Artificially increasing the volume to the rear speakers may destroy the illusion of an enveloping sound field that duplicates the way you hear sound in a movie the- ater or concert hall.

Before beginning the output level adjust- ment process, make certain that all speaker connections have been properly made. The system volume should be set to the level that you will use during a typ- ical listening session. While the CVR700 allows you to set output levels manually, we recommend that the EzSet system be used when the CVR700 is first installed to establish the initial level settings.

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