Williams Sound
®
Helping People Hear
8
C
ONTROLS AND
C
ONNECTORS
F
RONT
P
ANEL
P
OWER
I
NDICATOR
Indicates that the transmitter has power available and that the unit is on.
A
UDIO
A
DJUST
C
ONTROL
Controls level of audio signal and is connected between the input amplifier and the audio
level processing circuit.
A
UDIO
L
EVEL
I
NDICATOR
A four-LED array shows audio level in 6 dB steps. Indicator is average responding and is
calibrated so that optimum level is reached when the amber
0
light usually blinks and the red
+6
light blinks occasionally.
RF C
ARRIER
I
NDICATOR
The RF Carrier On Indicator shows when the transmitter is actually transmitting.
P
HONES
J
ACK
The Phones Jack monitors the processed, “as transmitted” audio. It accommodates standard
professional headphones with a 1/4" inch Tip-Ring-Sleeve (Stereo) plug. It can accept any
other type of headphone or earphone including those with Tip-Sleeve (Mono) plugs.
Earphones with 3.5 mm plugs can be used with a suitable adapter (i.e., Radio Shack Part
#274-367). Listening to this signal gives an accurate indication of the audio actually heard by
users.
R
EAR
P
ANEL
A
UDIO
S
ELECT
S
WITCH
Input characteristics, audio processing mode, and input filter cutoff frequency are set by this
DIP switch. A chart of settings is shown in Figure 3 and on the top of the unit. “On” and
“Off” are labeled on the body of the DIP switches.
AUDIO CONFIG SWITCH
AUDIO PROCESSOR
HI PASS FILTER
AUDIO INPUT
BAL/UNBAL 70 V
BAL/UNBAL 70 V
TRS PHONE
FLAT
SWITCH SETTINGS
COMPRESS
LIMIT
ON
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF OFF
3
4
5
6
7
8
2
1
OFF
OFF OFF
OFF OFF
OFF
OFF
OFF
OFF
OFF
OFF
– 3 dB AT 200 Hz
– 3 dB AT 730 Hz
BAL/UNBAL LINE
BAL/UNBAL LINE
BAL/UNBAL LINE
BAL/UNBAL LINE
MIC W/SIMPLEX
MIC
3 PIN
Figure 3: Audio Select Switch Settings
Switch 1 selects between Limit
and Compress Modes
Switches 2 and 3 control the
Hi Pass Filter
Switches 4-8 must be matched
to your audio input
See page 13 for plug wiring diagrams.
Содержание PERSONAL PA Pro Wide-band System 275
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