Avsl Adastra MG-220 User manual

MG-220 MEGAPHONE
WARNING: THIS PRODUCT REQUIRES 8 “D” CELL
BATTERIES, WHICH MUST BE LOADED CORRECTLY
PLEASE READ THE FOLLOWING BEFORE USING THIS PRODUCT
The MG-220 requires 8 x “D” cells, which must be loaded into the compartment the
correct way round. If they are loaded incorrectly, the megaphone will not work and
this may also cause damage to the unit.
Note: The 12V connector on the underside is NOT for re-charging.
Plastic sleeves are provided for loading the D cells into the compartment in pairs.
When loaded correctly, the compartment should appear as shown below.

MG220
Megaphone with Siren 30W
Item ref: 952.019UK
User Manual
Version 1.1
Caution: Please read this manual carefully before operating
Damage caused by misuse is not covered by the warranty

952.019UK User Manual
Introduction
Thank you for choosing the Adastra MG-220 megaphone for voice reinforcement. This product is designed
to offer convenient and easy operation for a wide range of portable public address requirements. Please
use the following instructions to gain the best results from your megaphone.
Safety
The MG-220 megaphone can produce high sound pressure levels at close quarters. Please be aware not to
aim the horn flare toward listeners at close proximity, which may risk damage to the listeners’ hearing.
The MG-220 operates from 8 x “D” cell batteries. It is advised to use alkaline or NiMH batteries and to
remove these when not in use for long periods of time. Some batteries can leak fluids which are corrosive
and can cause damage to the internal circuitry.
Positioning during operation
When in use, the pistol grip of the megaphone should be held firmly with the flare facing toward the
audience. Alternatively, the megaphone can be slung under the arm using the supplied shoulder strap.
In between uses, the megaphone can be placed on a flat surface with the flare facing downward,
protected by the rubber trim around the flare edge.
Cleaning
The housing is water resistant and can be cleaned with a damp cloth. Do not use detergents or solvents
on the housing and take care not to allow liquids to get inside the housing at the rear or via the battery
compartment.

952.019UK User Manual
Controls
Setting up
Before operating the MG-220 megaphone, it will be necessary to load it with 8 x “D” cell batteries.
To access the rear battery compartment, release the lever clip at the top and allow the rear cover to fold
down.
Load the battery holders with 8 x “D” cell batteries with alternating polarities as shown below.
Polarity symbols are imprinted on the inside of the rear cover to help with this.
Alternatively, the MG-220 can be powered by an external 12Vdc source
(such as car battery) connected via a 2.1mm DC jack located between the
pistol grip and rear cover hinge. This jack is covered with a rubber plug for
protection.
The image on the left shows the underside of the rear of the megaphone.
1.
Trigger switch
2.
Siren switch
3.
Push to talk switch (with lock)
4.
Microphone
5.
Volume control edge roller

952.019UK User Manual
Operation
The pistol grip should be held firmly in one hand with the rear panel facing toward the operator and the
flare facing away. Alternatively, the megaphone can be slung under the arm using the supplied shoulder
strap.
Holding the microphone in the other hand and pressing in the push-to-talk button (3) will activate the
microphone. If the push-to-talk button cannot be pressed in, it may be locked. Slide this button down to
unlock and press in to talk.
Set the volume control edge roller (5) to the centre of its travel and speak into the microphone (4).
Adjust the volume control to the required volume level.
Alternatively, the microphone may be hooked onto the rear cover for single handed operation.
Pressing the trigger switch (1) activates the microphone.
There is also a siren function which emits a loud sweeping tone for warnings or alerts.
To activate this, slide the siren switch (2) on the rear of the pistol grip to the SIREN position.
Sliding it back to the TALK position cancels the siren.
Remove batteries if not being used for long periods of time.
Specifications
Battery
12Vdc (8 x D cell, not supplied)
Rated output power
30Wmax
Range
600m
Dimensions
340 x 230mmØ
Weight
2kg (no battery)
Disposal: The “Crossed Wheelie Bin” symbol on the product means that the product is classed as
Electrical or Electronic equipment and should not be disposed with other household or commercial waste
at the end of its useful life. The goods must be disposed of according to your local council guidelines.
Errors and omissions excepted. Copyright© 2021. AVSL Group Ltd.
Unit 2-4 Bridgewater Park, Taylor Rd. Manchester. M41 7JQ
AVSL (EUROPE) Ltd, Unit 3D North Point House, North Point Business Park, New Mallow Road, Cork, Ireland.