Audio Authority SF-16M, Инструкция по установке и эксплуатации, Страница: 17 / 36

SF-16M Matrix Amplifier Installation and Operation Guide 17
Line 2: Volume level or other status of the output channel(s). Select to display
and adjust volume level. Status messages are as follows:
• Standby – the entire unit is in standby, forcing all outputs into low power mode
(no output).
• Shutdown – the output is in thermal shutdown, meaning the output chip has
overheated. Shutdown prevents any permanent damage to the chip and gives
it time to cool down.
• Overtemp – the output stage is getting too hot. The SF-16M turns down the
output by 3dB at this point in order to prevent shutdown.
• Poweroff – power is removed from the output manually. Poweroff is similar to
mute, but when the output is powered back on, it comes on in a known and
safe state (within minimum turn on, maximum turn on volume settings).
• Muted – the output has been muted. When an output is unmuted, it returns to
its most recent volume level, which can be outside minimum/maximum turn on.
• Automute – the output has been automatically muted due to lack of input
audio. The outputs are split into two banks, 1-8 and 9-16. If no input audio is
present on an entire bank, all the outputs in that bank will automatically mute to
conserve power.
• Volume – the output volume level of the channel. Volume bar is always
available when you select the line.
Line 3:
The connected input number(s) and name. There are four ways for an
output and input to be connected:
1. Stereo output pair to stereo input pair - The stereo input pair is listed in the
“number-comma-number” sequence (e.g. “1,2 iPod” is a stereo input pair
including channels 1 and 2).
2. Stereo output pair to mono input - The mono input is displayed as a mono pair
(e.g. 3,3 Microphone). The “number-comma-number” indicates that the stereo
output pair has both outputs connected to the same input.
3. Mono output to stereo input pair - The mono output connects to a “monoized”
version of the stereo input pair and displays in “number-plus-number” format
(e.g. 1+2 CD Changer). Input 1 and 2 are digitally combined to mono.
4. Mono output to mono input - The mono output will connect to a mono input; it
appears as a “single number and name” (e.g. “1 Page Mic”).
Line 4: Loudness status. Loudness is a 5 dB bass and treble boost. It is intended
to enhance audio for listening at low volume levels. Loudness uses low shelf
and high shelf filters at 200 Hz and 3000 Hz respectively.
Line 5: Bass boost, an adjustable low shelf filter. Bass boost requires that filter
1 is a low shelf, but allows any frequency to be specified and still operate.
The boost range is -15 to +15 dB. Switching filter 1 to any other filter type will
disable bass boost. When the fifth line is selected, a horizontal bar showing the
bass setting is displayed.
1
2
3
4
5
6
7
8
9
10
11
Output > Quick Access
General Setup Tips
• Each input and output can be set up as stereo or mono, but the easiest way to keep track is by counting each
mono input or output as a single channel. Use the odd numbered channel to number a stereo input (skip the even
numbers).
• Be sure to record input names and stereo or mono status; a worksheet is provided on page 7.
• Do not connect RCA
and DB-25 input cables at the same time; it may degrade audio quality.
• Audio Override terminals provide a way to trigger an override or a sound scene. Connect a momentary switch,
button, or other contact closure. Use the SonaFlex PC utility to define sound scenes and overrides (see online
video tutorials).
• Observe correct polarity when connecting system trigger input or output (e.g. a preamp out which sends out a +12V
signal when on, and 0V when off).
Mono vs. Stereo
Note: A stereo input can be
selected for mono output(s)
using either of its input
numbers (e.g. 7 or 8). Stereo
input channels are available to
stereo outputs as stereo, and
also combined in the DSP for
mono outputs.
Adjusting Levels
To change volume levels, bass,
treble, and balance, select the item
and turn the knob to reach the de-
sired level on the bar graph provided.
Press the knob again when finished.
Output > Quick Access