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Viewing and Adjusting the Input Audio Level
The audio level of each input can be displayed and adjusted through a range of -18
dB to +24 dB to ensure that there is no noticeable volume difference among sources
(see figure 25). The audio level can be adjusted from the front panel or under remote
control. The default audio level is 0 dB.
Audio
Inputs
Audio
Inputs
VCR
No noticeable
volume differences
between sources
Audio System
CD Jukebox
MTPX Plus 1616
0
-3
-6
-9
-12
-15
Low Audio
Output Level
+4
+1
-2
-5
-8
-12
-18
-21
-15
-18
3 +7
6 +10
9 +13
12 +16
15 +19
18 +21
21 +24
VU dBu
0
-3
-6
-9
-12
-15
High Audio
Output Level
+4
+1
-2
-5
-8
-12
-18
-21
-15
-18
3 +7
6 +10
9 +13
12 +16
15 +19
18 +21
21 +24
VU dBu
0
-3
-6
-9
-12
-15
Output
Level
+4
+1
-2
-5
-8
-12
-18
-21
-15
-18
3 +7
6 +10
9 +13
12 +16
15 +19
18 +21
21 +24
VU dBu
AUDIO
VIDEO
I/O
CONTROL
ENTERPRESET
VIEW
ESC
1
2
34
5
6
7
8
9
10
11
12
13
14
15
16
1
2
34
5
6
7
8
9
10
11
12
13
14
15
16
INPUTS
OUTPUTS
CONFIG
MTPX PLUS SERIES
MTP MATRIX SWITCHER
Figure 25. Audio Gain and Attenuation
1. Press the Esc button to clear any input buttons, output buttons, or control buttons that
may be lit.
2. To enter Audio mode, press and hold the Audio button until the button begins to blink
red, then release the button.
3. Press and release an input button to select an input. The output buttons display the
audio level for the selected input; the more output LEDs lit, the greater the gain or
attenuation.
• Green output buttons indicate a gain (+) audio level.
• Red output buttons indicate an attenuation (–) level.
Audio gain and attenuation is displayed differently on different models.
• Switchers with 32 output buttons — Each output button indicates 1 dB when lit
steadily (see table 4 on page 49).
• Switchers with 16 output buttons — Each output button indicates 1 dB when
blinking and 2 dB when lit steadily (see table 5 on page 50).
• MTPX Plus 128 (8 output buttons) — Each output button indicates 1 dB when
blinking slowly, 2 dB when blinking quickly, and 3 dB when lit steadily (see table 5
on page 50).
4. Press and release the Esc (>) and View (<) buttons to increase and decrease the audio
level.
5. Press and release the Audio button to exit the Audio mode. The Audio button stops
blinking.
MTPX Plus Series • Operation 48