NAIM AV2 Owner's Manual page 15

14
9.0 av2 detailed setup
distance from the primary listening and viewing position. Use the
panel: rotary control) to select a numerical value. Move to the next step by pressing 8
(front panel: mode button).
Steps 8 to 14. Repeat the step 7 procedure for the Centre (CEN), Main Right (R), Right
Surround (RS), Right Extra Rear (RR), Left Extra Rear (LR), Left Surround (LS) and Sub-
woofer (SUB) channels each time selecting the appropriate distance value with the
or 6 keys (front panel: rotary control). Move to the next step by pressing 8
panel: mode button).
More! Defining the distance from the speakers to the listening/viewing position
adjusts only relative signal time delays and not volume levels.
More! The centre speaker should not be further away from the listening position
than either main speaker.
More! If specific speakers have been previously defined as not present their
distance parameter will be unavailable.
Steps 15 to 23 of the Speaker Setup routine define relative volume levels of the channels.
Step 15 selects and activates a test "noise" signal that enables the relative volume levels
to be adjusted by ear. Ensure that the av2 is connected to the required power amplifiers
and sub-woofer, that these are switched on and that the speakers are correctly connected.
Step 15. The av2 display will show TST on the left hand side and either OFF or ON on the
right hand side. Pressing either the
prompt the right hand side of the display to cycle through OFF and ON. Select ON and
move to the next step by pressing 8
More! If the test signal is either too loud or too quiet the volume can be
adjusted with the vol up and down keys.
More! When using the test noise to adjust the volume level for each speaker
there are some issues that need to be considered if the dynamic range of the
av2 is to be optimised.
Note that the adjustment levels are relative values only and do not have any
effect on the loudness of the system for a given av2 volume setting. For
example, if all the speaker channels had a setting of, say, -12 or if they all had
a setting of, say, +6 the resulting loudness of the av system would be the same
at any given setting of the master volume control.
Following the procedures below will help ensure optimised dynamic range from
the av2.
When using an active sub-woofer the adjustment level for the sub-woofer output
on the av2 should be set somewhere between the maximum and minimum settings
needed for the other loudspeakers in the system. Subsequently the volume control
on the sub-woofer itself should be adjusted to give the best results.
There is a similar requirement when setting the main left and right speaker
levels if the av2 is integrated into a conventional stereo system. The volume
control on the stereo preamplifier should be set to an easily recalled position
such that the adjustment levels for the main left and right outputs of the av2
are set somewhere between the maximum and minimum settings needed for
the other loudspeakers. The volume control setting on the preamplifier will have
to be set every time the av system is used; not forgetting to reset it for use with
music. For Naim nac 72, 102, 82 and 52 preamplifiers used with an av2 the
preamplifier volume control should be set to around 12 o'clock. The Naim nait
5 integrated amplifier and nac 112 preamplifier have automatic gain
adjustment that takes effect when the av input is selected, and so the volume
control does not have to be altered.
4 or 6
4 or 6 keys (front panel: rotary control) will
(front panel: mode button).
keys (front
4
(front