Adcom GSP-560 - Manual (Page 11)

c) After approximately two seconds, the center channel will mute and you’ll hear the test tone through the right front
speaker, probably at the same level as that of the left channel If left and right levels match, do nothing
If there IS a substantial difference between left front and right front outputs, correct the difference with your
control center’s balance control. Significant placement differences for left and right front speakers may cause
this imbalance Ideally, these speakers should be spaced symmetrically on either side of the TV screen If room
decor makes this placement difficult, or if you prefer to sit off-center from the TV screen, you may need left-right
balance correction
d) The test tone will shift to the rear speakers First, make sure that both rear speakers are functioning, then use the
“Rear Level Up/Down” pushbuttons ® to adjust the rear channel output to match that of the front left, center,
and front right speakers.
Remember to use the “Active Channel Display” O on the GSP-560's front panel as a visual reference. As the
tones cycle through all speakers, the Active Channel Display will indicate which speaker is currently receiving
the test tone
You’ll probably need to let the Balance Check test tones cycle through all speakers three orfour times until you’ve
matched levels closely Don’t worry about how quickly you can accomplish this balance adjustment—just take
your time and do it carefully
If you find yourself abit intimidated bythis procedure, rememberthatyou begin again simply by pushing the “Rear/
Center Reset” button 0. This will return all your gam adjustments to a neutral reference point From here, you
can start the level calibration process again. The front panel “Rear/Center Reset” button 0 serves the same
purpose
One note of caution Do not use either “Rear/Center Reset” button after you’re satisfied with channel-to-channel
balances. They are intended only to provide a reference point from which to START the balancing procedure
detailed here.
16) RESUMING NORMAL OPERATION
Push the “Bal Check” button ©again to turn off the test tone The GSP-560 is now ready for normal operation See
Paragraph 19 below for additional information on choosing the proper Surround and Delay options
17) MASTER VOLUME OPERATION
When you use the remote controller for volume, the GSP-560 will give you two visual clues that the circuit is operating
First, the “Receiving” LED on the front panel © will flash. The LED on the “Master Volume” knob ©will change color
from red to green as the knob moves in response to commands from the hand held controller Flowever, the LED will
NOT change color if you move the “Master Volume” knob by hand.
18) GETTING THE MOST OUT OF YOUR FAVORITE SOURCE MATERIAL
The GSP-560 IS an enormously flexible unit and will increase your enjoyment of a wide variety of audio and video
sources This section is the most subjective in the entire Owner’s Manual’ Feel free to take the suggestions here as
starting points for your own experimentation Above all, enjoyi
a) Choosing the proper Operating Mode
The GSP-560 provides six operating modes seiected by the “Surround” pushbutton on the front panel O or the
remote controller © These are Dolby Pro Logic, Concert Hall, Nightclub, 5 Channel Matrix, 5 Channel
Stereo and Bypass (2 channel stereo ) Each of the first five modes is indicated by an LED to the left of each mode
ID. In “Bypass” mode, no Mode LED lights.
DOLBY PRO LOGIC is the preferred mode for properly processing Dolby Surround encoded video soundtracks,
a growing number of CDs, and even the audio portion of some video games' in this mode, the GSP-560 presents
a spatially correct soundstage with precise lateral imaging and front to back depth
Rear channel delay choices 30.20. and 15 milliseconds (See 18B below for more information on delay )