System Configuration
specific speaker placement and acoustic condi- tions in your listening room or home theater.
The factory setting is appropriate for most rooms, but some installations create an uncom- mon distance between the front and surround speakers that may cause the arrival of front channel sounds to become disconnected from surround channel sounds.
To resynchronize the front and surround chan- nels, follow these steps:
1.Measure the distance from the listening position to the front speakers.
2.Measure the distance from the listening position to the surround speakers.
3.Subtract the distance to the surround speak- ers from the distance to the front speakers.
a.When setting the delay time for the Dolby Digital surround modes, the opti- mal delay time is the result of that sub- traction. For example, if the front speak- ers are ten feet away and the surround speakers are five feet away, the optimal delay time is figured as 10–5=5. Thus, in this example, the delay time for Dolby Digital should be set at five milliseconds.
b.When setting the delay time for the Pro Logic mode, take the result of the sub- traction and add 15 to obtain the opti- mal delay time. For example, if the front speakers are ten feet away and the sur- round speakers are five feet away, the optimal delay time is figured as 10–5+15=20. Thus, in this example, the Pro Logic delay should be set at twenty milliseconds.
NOTE: The DTS, Logic 7, Hall and Theater modes use a fixed, nonadjustable delay time.
The Dolby Digital Mode also includes a sepa- rate setting for the center channel delay mode, since the discrete nature of these signals makes the location of the center channel speaker more critical. To calculate the delay for the center channel, measure the distance from the pre- ferred listening position in the center of the room to both the center channel speaker and either the left or right speaker.
If the distances are equal, no further adjustment is required and the center delay should be set to zero. If the distance to the front speakers is greater than the distance to the center speaker, you may wish to reposition the speakers by moving the front left and front right speakers closer to the listening position or the center speaker further away from the listening position.
If repositioning of the speakers is not possible, adjust the center delay time, adding one milli- second of center channel delay for every foot closer to the listening position the center speaker is than the front speakers. For example, if the front left and front right speakers are each 10 feet from the listening position and the center channel speaker is 8 feet away, the delay is figured as 10–8=2, suggesting an optimal center delay of 2 milliseconds.
To set the delay time for a specific input, continue within the SURROUND SETUP (Figure 4) menu. If the system is not already at that point, press the OSD button s to bring up the main audio setup menu, press the Û button g5 and then the Set button i( to bring up the surround setup menu, and then press the Û button g5 once.
If the Dolby Digital mode is selected, the Ý cur- sor will stop at the CENTER DELAY line. In that case, press the Ü/Ý buttons j 29 until the desired figure appears in the display, using the number calculated using the formula shown above. When the CENTER DELAY is entered, press the Û button g5 once to move to the next line.
When the CENTER DELAY is set, or if the Dolby Pro Logic mode is selected, the Ý cursor will be at the SURR DELAY line so that the delay for the surround speakers may be set. Press the Ü/Ý buttons j 29 until the desired figure appears in the display, using the number calculated using the formula shown above. When the delay settings are complete, press the Û button g5 once to move to the next line.
Note that the delay settings may also be adjusted at any time when the Dolby Digital or Dolby Pro Logic modes are in use by pressing the Delay button on the front panel ï or remote 28 , followed by a press of the Set button (i. Next, press the Ú/Û buttons g5 until the desired figure appears in the Main Information Display W.
Crossover Frequency
The crossover frequency is the point at which the AVR 7000 divides low frequency, or bass sounds, from the rest of the audio output. This is important as it enables you to match the per- formance of the AVR’s’ bass management sys- tem to the precise characteristics of your speak- ers and subwoofer. When a subwoofer is used, this setting determines which sounds go to the subwoofer and which to your other speakers.
Before entering the data for this setting, you will need to find out what the crossover point of your subwoofer is. This is the number that is the high range of your subwoofer’s frequency response. Consult the Owner’s Manual for your subwoofer, and look for the frequency response line on the specifications page. The number at the high end is the figure that should be used for the crossover point. If your subwoofer has an adjustable crossover, set it for 80Hz, 90Hz and 100Hz, and then enter that setting into the AVR 7000.
To set the crossover point, make certain that the Ý cursor is on the CROSSOVER FREQ line. Next, press the Ü/Ý buttons
j29 until the desired figure appears on the screen. If the choices shown do not match the choices available, select the number closest to the required number.
If you do not know the correct crossover point, or are unable to find the information, leave the factory default in effect. If it appears that there is a “hole” in the smoothness of the system’s sound, as evidenced by rough transitions from bass to higher-range sounds, choose a higher setting than the default.
For all modes other than Dolby Digital, the Surround Setup is now complete. Press the Û button g5 one more time so that the Ý cursor is next to RETURN TO MENU, and press the Set button i(. For the Dolby Digital mode, there is one more adjustment to be made. Press the Û button g5 to go to the NIGHT MODE setting line.
Night Mode Settings
The Night mode is a feature of Dolby Digital that uses special processing to preserve the dynamic range and full intelligibility of a movie sound track while reducing the peak level. This prevents abruptly loud transitions from disturb- ing others, without reducing the sonic impact of a digital source. Note that the Night mode is
