NAIM AV2 Owner's Manual - page 24
22
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. The volume control on the sub-woofer itself should
then 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 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 most Naim preamplifiers used with an AV2 the
volume control should be set to around 12 o’clock. The Naim NAIT
5 integrated amplifier and NAC 112x 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.
18.2.7 Main Left Speaker - Volume Level
Use the handset
vol
5
and
vol
6
keys initially to set a suitable
volume. The test signal should be heard through the Main Left
speaker. The AV2 display will show
L
on the left hand side and
a numerical value between
-30
and
+30
on the right hand side.
L
refers to the Main Left speaker and the numerical value its
relative volume level. Use the
3
4
or
6
4
keys (
front panel:
rotary
control) to select volume level initially of around zero.
Move to the next step by pressing
8
6
(
front panel:
mode
button).
Note:
If the test signal is not heard through the left main speaker
the AV2, power amplifiers or speakers are not connected or set up
correctly.
18.2.8 Remaining Speakers - Volume Level.
Repeat the procedure for the Centre (
CEN
), Main Right (
CEN
CEN
R
),
Right Surround (
RS
), Right Extra Rear (
RS
RS
RR
), Left Extra Rear (
LR
),
Left Surround (
LS
) and Sub-woofer (
SUB
) channels each time
adjusting the volume using the
3
4
or
6
4
keys (
front panel:
rotary
control) to be similar to the previous speaker. It is always
possible to return to and adjust the previous speaker by pressing
2
5
(
front panel:
input
button).
Note:
It may be helpful to cycle once or twice through all the
speakers before making any level adjustments.
Note:
If specific speakers have been previously defined as not
present they will not be included in the test.
Note:
If the test signal is not heard through the speaker designated
in the left hand side of the display at each stage, the AV2, power
amplifiers or speakers are not connected or setup correctly.
Note:
Take care when exiting speaker setup mode that adjustment
of the test signal has not left the overall volume set at an excessive
level.
This step completes the AV2 Speaker Setup routine. To exit from
Speaker Setup mode press the handset
menu
key followed by
the
mode
5
key (
front panel:
press and hold
mode
button).
Exiting from setup mode stores the settings selected for each
parameter.
19 AV2 Operation
With inputs and outputs connected, and both setup
routines complete, the AV2 is ready for use. If a setup
parameter needs adjustment the setup pages are
always available from the remote handset or front
panel as described in Section 15 and 18. Remember
however that some speaker setup parameters
are subordinate to the selected input and decode
selection. For example, if an analogue input and
stereo direct mode are chosen, only the main left
and right speaker parameters will be available for
adjustment.
19.1 Input Selection and Volume Control
To select an input use the handset
input
key followed by one of
the
numeric
keypad numbers 1 to 0 (
front panel:
input
button).
The keypad numbers correspond to the input socket numbers.
The handset
i/p
5
and
i/p
6
can also be used to scroll through
the inputs. When a new input is selected the AV2 display will
sequentially show the input source (previously specified in the
Input Setup page) and the current decode mode settings. The
default display data is overall volume.
Note:
The AV2 may take a moment to display inputs and decode
modes when new inputs are selected as it locks on to, and
identifies, any signals. During this time the display will show three
flashing bars.
To adjust the overall volume use the
vol
5
or
vol
6
keys (
front
panel:
rotary
control).
19.2 Decode Modes - Selection and Availability
The signal decoding behaviour and options of the AV2 are
dependent on both the source programme material and in some
cases the speaker setup previously specified. With analogue,
and some digital programme material, decoding options are
user definable - although the results of processing for example,
music material with movie decoding mode are unpredictable. In
some cases however the AV2 will automatically identify encoded
material and only make available the appropriate decoding option
or options. The AV2 display and decode indicators together show
each decoding mode selected or imposed.
To select a decoding mode use the mode key (
front panel:
mode
button) followed by one of the
numeric
keypad numbers.
The keypad numbers correspond to decoding modes with lower
numbers selecting less complex modes (keypad
0
generally
selects direct or auto modes, keypad
1
selects mono, keypad
2
selects stereo, etc). The handset
mode
5
and
mode
6
can
also be used to scroll through the available decode modes.
The selected decode option will flash in the display until the
AV2 has successfully “locked” to the signal before the display
reverts back to indicating volume. The AV2 will store the last
selected decode mode for each type of signal and for each input.
The decoding options and display for each type of programme
material, and the speaker channel schemes for each are detailed
in Tables 19.4 and 19.5.