Nady Systems WA-125U Owner's manual - page 4
ON
RF ON
MIC/TX
ECHO
POWER
MIC
MIC
AUX
AUX
TREBLE
REC. OUT
BASS
WA-125U
UHF
WIRELESS AMPLIFIER
4
WA-125U CONTROLS & CONNECTIONS
1.
Power ON/OFF switch
2.
MIC and AUX signal input jacks
3.
6.5” round speaker
4.
Power ON LED indicator
5.
RF ON transmitter signal reception LED indicator
6.
MIC/TX, MIC, AUX Volume controls
7.
BASS-TREBLE Tone controls
8.
RECORD output jack for recording or additional amplification
9.
ECHO level control of echo/reverb in the channel signal
13
1
2
3
4
5
6
7
8
9
LINK 4™ PLUG-IN TRANSMITTER
Transmitters Set Up
The LINK-4 transmitter requires a single 9V battery to operate. To open the battery compartment,
slide BATTERY DOOR (37) downward to open the cover, exposing the BATTERY HOLDER (38).
Insert a fresh 9V battery according to the correct polarity as indicated on the transmitter body. Slide
back the door onto the original position. Make sure the cover is secured completely. Fresh Alkaline
batteries can last up to 10 hour of operation, but in order to ensure optimum performance, it is
recommended that the batteries should be replaced after 6-8 hours of use.
Handheld Microphone Installation
Step 1
Rotate the transmitter’s threaded LOCKING RING (39) counter-clockwise inward the
transmitter body until it stops.
Step 2
Hold your mic in one hand and the LINK 4 in other.
Step 3
Place your mic into the XLR CONNECTOR (40) and push your mic all the way down
untill a click sound.
Step 4
Lock the mic into place with the adjustable threaded LOCKING RING (39) by rotating the
ring clockwise, to the top of the transmitter
Step 5
To release the XLR CONNECTOR (40), turn the treaded LOCKING RING (39) counter-
clockwise and press the RELEASE BUTTON (45).
Lavalier Microphone Installation
You will need a male XLR to mini male XLR adaptor (Switch-Craft TA-4 or equivalent) to use a
lavalier microphone per the installation instructions. Then plug the lavalier microphone’s mini male
XLR into the adapter. The PHANTOM POWER SWITCH (41) should be turned ON for use with a
condenser lavalier mic which requires external phantom powering.
Note: The lavalier microphone you are using must terminate with a mini XLR or full XLR connector
and confirm to the pin assignments shown below. If they do not, the lavalier mic may not work with
the LINK 4. If you have any questions, please contact your Nady dealer or Nady Systems Service
Department.
The pin assignments on the LINK 4 XLR connector are as shown:
Microphone Operation
To turn it on, slide the OFF/STANDBY/ON SWITCH (42) to the STANDBY position first (transmit-
ter on, audio muted) or the ON position (transmitter and audio both on). You could also use your
hardwire microphone audio mute switch afterward. The BATT LOW INDICATOR LED (43) will give
a single flash in red, indicating usable battery strength. In case of dead or low battery, both LEDs
will either not go on at all or will stay on continuously, indicating that the battery should be replaced
with a fresh one. To preserve battery life, turn the transmitter off when not in use. To turn off, slide
the OFF/STANDBY/ON SWITCH (42) to OFF position. No LEDs will light up. The unit is now off.
XLR
Connector
Top View
3
1
2
Ground
Phantom Volt. (full 9V battery
voltage) switchable
Mic
Input
680
680
9V
9V
2
3
1