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Printed in Taiwan
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11. AUDIO LEVEL ADJUSTMENT (SENSITIVITY CONTROL)

To change the factory-preset level, follow the procedures below.
Step 1. Holding the microphone body, slide the battery cover down to open it. The battery cover is designed

not to be removed from the body. 

Step 2. Switch on the power of the tuner and microphone.
Step 3. Adjust the audio level control using the supplied screwdriver. The

microphone sensitivity increases as the control is rotated clockwise,
and decrease as rotated counterclockwise. 

Step 4. Adjust the corresponding tuner's volume control so that its knob points

to the 2 o'clock position. If the tuner's AF PEAK indicator remains lit,
readjust the microphone's audio level control to the position that
causes the indicator to flash when the tuner output level reaches its
peak. The AF PEAK indicator lights when the output level reaches the
point of about 3 dB below the clipping level.

Note
The AF PEAK indicator operates in response to the volume control position. 

However, the AF LEVEL indicator (on the WT-4800) indicates the level regardless of the volume
control setting.  

Step 5. Replace the battery cover.

12. CONNECTOR PIN FUNCTIONS

The microphone's input connector is of TA-4F type. 
[ Input connector pin assignment ]

1. Ground
2. DC power (+5 V)
3. Audio 
4. Audio/+5 V (2.2 k

to DC power)

3

Audio level 
control

License requirement

Operation is subject to the following two conditions: 
(1) This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.

Microphone Element

Electret condenser type, cardioid pattern

Emission

F3E

Frequency Range 

690 – 865 MHz, UHF

Selectable Channel 

64 frequencies (These may differ in countries.)

RF Carrier Power

Less than 50 mW

Tone Frequency

32.768 kHz

Modulation System

PLL synthesizer

Maximum Input Level

120 dB SPL

Battery 

6LR61(9 V x 1)

Battery Life 

10 hours (alkaline)

Indicator

Power/Battery lamp (common use)

Antenna 1/4 

λ

herical type 

Operating Temperature

–10 to +50°C

Finish

Resin, coating, dark gray

Dimensions

62 (w) x 142 (h) x 32 (d) mm

Weight

150 g (with battery)

13. SPECIFICATIONS

• Accessories
Screwdriver (for setting)  .......... 1
Channel identification seal ....... 1
Storage case  ........................... 1

Note: The design and specifications are subject to change without notice for improvement. 

1

3

2

4

Summary of Contents for WM-4300

Page 1: ...larity positive and negative orientation when inserting a battery in the unit Avoid locations exposed to the direct sunlight high temperature and high humidity when storing batteries WARNING 1 SAFETY PRECAUTIONS Be sure to read the instructions in this section carefully before use Make sure to observe the instructions in this manual as the conventions of safety symbols and messages regarded as ver...

Page 2: ... not expose the unit to rain or an environment where it may be splashed by water or other liquids as doing so may result in unit failure Never open nor remove the unit case to modify the unit Refer all servicing to your nearest TOA dealer Take care not to drop the unit onto the floor nor bump it against a hard object as the unit could fail Do not place the unit in locations of high temperature ex ...

Page 3: ...opouts momentary losses of signal reception may be encountered These dropouts are caused by the building s architectural designs or materials which block the travel of or reflect the radio signal If this occurs the user needs to change locations for better signal reception The proper operation of your wireless system may be interfered with by other system operating on the same frequency In such ca...

Page 4: ...es the level regardless of the volume control setting Step 5 Replace the battery cover 12 CONNECTOR PIN FUNCTIONS The microphone s input connector is of TA 4F type Input connector pin assignment 1 Ground 2 DC power 5 V 3 Audio 4 Audio 5 V 2 2 kΩ to DC power 3 Audio level control License requirement Operation is subject to the following two conditions 1 This device may not cause harmful interferenc...

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