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QUICK START GUIDE

VERSION: 08/03/2019

VM300 WIRELESS MICROPHONE SYSTEM

Thanks for purchasing JBL VM300 wireless microphone system.

JBL VM300 boasts ultra clarity and reliable performance, and meets the highest standard from either professional or entertainment sound 
applications with the following features: 
• 

Preset frequency/channel module for Ch-A and Ch-B

• 

Auto Scan 

• 

SHAKE TO SYNC (frequency range: 2400 MHz - 2483.5 MHz)

• 

Synchronization through IR

• 

Auto Mute

• 

Auto Sleep

• 

Auto Wakeup

Each JBL VM300 system includes one SR300 receiver and two HT300 hand-held transmitters. 

12.  Pick-up

For vocal or instrument sound pick-up.

 

DON'T hand hold or block this area when using HT300.

13.  LCD: 

Shows status of HT300: battery level, frequency/channel, mute, etc. 

14.  On/Off button:

 Long press the button to turn HT300 on or off. This button can also be 

used to activate or deactivate its auto mute function. 

15.  Grip/Battery compartment: 

Hold this area when using HT300. Twist it off to install 

or replace the batteries or prepare HT300 for frequency/channel synchronization with 
SR300 through IR. 

16.  Antenna: 

For wireless transmission of RF signal. 

 

DON'T block this area when using HT300.

ABOUT VM300

PACKING LIST

1)  1 

×

 SR300 receiver

2)  2 

×

 HT300 hand-held transmitters

3)  2 

×

 Antennas

4)  1 

×

 Power adapter 

5)  1 

×

 Audio cable (with 6.35 mm plug)

6)  2 

×

 Anti-rolling rubber rings

7)  4 

×

 AA batteries

8)  1 

×

 Quick Start Guide 

USER INTERFACE

1.  Volume (A/B)

To lock/unlock SR300, adjust channel volume, or configure channel 

settings, etc. 

NOTE: 

Settings of each channel include: SET FRQ (to set the channel frequency), SET 

RF (to set RF output of HT300), SET AUD (to set auto attenuation of the output gain of 

the channel), SET DIS (to set the display mode). 

2.  Auto Scan: 

To enable or disable automatic search for available frequencies. Only 

effective when SR300 is unlocked. 

3.  Auto Sync: 

To enable or disable automatic frequency synchronization between SR300 

and HT300. Only effective when SR300 is unlocked. 

4.  IR Sensor: 

For frequency synchronization with HT300.

5.  LCD: 

Shows status of Ch-A and Ch-B: audio signal level, RF signal level, frequency/

channel, mute, etc. 

6.  Frequency/Channel Module

To select preset frequency/channel module for Ch-A 

and Ch-B. Only effective when SR300 is unlocked.

7.  Antenna: 

Connect the UHF antennas provided. 

 

DON'T block this area when using SR300.

8.  On/Off button:

 To turn SR300 on or off. 

9.  Balance Out (A/B): 

3-pin balanced XLR connector, for connection of professional-grade 

audio devices. 

10.  Power Input

Power requirement: 12 VDC, 1.25A. Connect the power adapter 

provided. 

11.  Mix Out: 

 6.35 mm unbalanced TS connector. Use the 6.35 mm audio cable supplied 

and connect it to downstream audio devices (e.g. audio processors).

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SR300 - Front

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SR300 - Rear

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HT300 - Front

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HT300 - Rear

OPERATION INSTRUCTIONS

Lock/Unlock SR300

  Long press the Volume knobs (1) of both Ch-A and Ch-B to lock or unlock SR300. 

  When SR300 is locked, its LCD shows "LOC ON"; When SR300 is unlocked, its LCD 

shows "UNLOC".

Adjuct Channel Volume

  Unlock SR300.

  Rotate the Volume knob (1) of Ch-A or Ch-B to adjust the volume of the channel. 

Select Frequency/Channel Module

  Unlock SR300.

  Short press the Module buttons (6) to select preset frequency/channel group for Ch-A and 

Ch-B. When selection is done, the system stores the selection automatically.  

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