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3 REPEAT THIS PROCESS FOR EACH SPEAKER IN TURN
Pressing volume ± will move the cursor (and the test noise) on to the next
speaker. When adjusting the subwoofer level, be sure to get up and walk all
around the listening area, watching for the magnitude of the variations in-
troduced by room modes at low frequencies. If more than 3-4 decibel
variations are seen within the listening area, consider relocating your
subwoofers for more consistent results. (See Planning Your Installation for
specific suggestions on subwoofer placement.)
4 MAKE A NOTE OF THESE SETTINGS UNDER “YOUR SYSTEM SETTINGS” IN
THE BACK OF THIS MANUAL
Having these settings handy will prove helpful should anyone ever tamper
with your careful calibrations. Of course, you should re-calibrate the system
whenever changing amplifiers and/or speakers, or when something has a
noticeable effect on room acoustics (such as rearranging the furnishings).
5 SAVE ALL YOUR CHANGES AND RETURN TO THE SETUP MENU
Once you have each channel adjusted properly, press
menu to return to the
set speakers menu so you can continue the initial setup of your system.
bass level manager Some powered subwoofers have built-in protection against overload, or have am-
plifiers designed to be incapable of destroying the subwoofer driver itself. If your
system enjoys this sort of protection, leave the Audio Video Preamplifier’s bass
level manager
at its maximum (and therefore effectively disabled) setting. After
all, the speaker designer knows the limitations of his/her product better than ei-
ther you or we can. It’s best to let the speaker designer decide.
However, many subwoofers lack any protection against being overdriven other
than your own discretion in using the volume control. While this discretion is al-
ways a good thing — if your system starts to sound distorted, “fuzzy” or garbled
at high volumes, turn it down! — some people might prefer to have the system
itself provide a measure of additional protection. This task falls to the bass level
manager
.
With the advent of discrete multichannel digital audio, it is possible to have six
(or more) channels of information that contains deep bass frequencies. In many
cases, the only speaker in the system that can reproduce deep bass is a single
subwoofer. If one subwoofer is expected to do the work of six speakers, and the
listener-controlled volume is turned up fairly high, it is easy to imagine the
woofer being taken beyond its limits. (Incidentally, there are significant sonic ad-
vantages to having multiple subwoofers when possible, in addition to simply in-
creasing the maximum volume that can safely be enjoyed. You may want to con-
sider using two subwoofers.)
bass level manager menu
BASS LEVEL MANAGER
TEST SIGNAL: OFF
TEST/NEW LEVEL: 35.0
SAVED LEVEL: 65.0