Ahuja AM-25DP User manual

Ideal for Crowd Control.... Fire Fighting.... Rescue Operations.... Construction Sites....
Sports Events.... Electioneering.... Field Publicity.... Film Shooting.... Religious Gatherings....
SPECIFICATIONS
Power Output : 20W Rated / 25W Max.
Voice Range : Approx. 400m ( Siren
500m) in quiet
surroundings
Power Source : 10 x AA Pencil Cells /
Car Battery 12-14V DC
/ 11.1V Li-ion battery
optional
Microphone : Unidirectional
Inputs : Dedicated Microphone
Dimensions : Horn Dia 230mm,
Length 382mm
Weight : 1.40 kg
(1.20 kg without cells)
Batteries not provided with product.
Design & Specifications subject to change without notice
nUM-3 (AA) Pencil Cells & Car Battery
(12-14V DC) operation.
nCan also operate on Li-ion Battery.
nCLASS-D Amplifier provides extremely
high efficiency of power consumption
resulting in extended battery life.
nAll ABS body, sturdy yet lightweight.
nBuilt-in Siren.
nClear sound, long range & efficient.
nMicrophone with Volume Control & built-in
recording / playback facility.
nMessage upto 240 seconds (4minutes) can
be recorded.
nMP3 playback facility through USB,
SD/MMC card & Aux input.
nCan be used as hand held as well as on
shoulder.
nRecommended to use AA Alkaline Cell or
Li-ion battery for extended life and better
performance.
AM-25DP
25W Shoulder Sling & Handgrip Type MEGAPHONE with
SIREN, RECORDING & MP3 PLAYBACK
Application Examples

OPERATION
Open the Back Cover by rotating the
back cover anticlockwise. Rotate the
two locking pins to remove the Cell
Container and insert 10 nos. (AA) Pencil
Cells with correct polarity as indicated
on the Cell Containers. Then place the
Cell containers in the cell compartment
and lock the compartment by rotating
the lock pins. Put the back cover &
rotate clockwise to tighten it.
To activate the megaphone, press the
talk switch on the handgrip or slide the
microphone power switch to ON
position.
When using the megaphone, place your
lips as close as possible to the
Microphone. Adjust the Volume Control to
the desired level without causing any
howling or feedback.
The Megaphone can also be connected
to a Car Battery by fitting the DC plug
(supplied) to External Car Battery
Connector on the Megaphone.
PRECAUTIONS
Ensure correct polarity of Cells / Car
Battery.
When the megaphone is not in use for a
long period, remove the dry cells.
Drained cells do not give sufficient sound
output. Replace cells at regular intervals.
2
AM-25DP
Megaphone
AM-25DP
AM-25DP
Class-D MEGAPHONE
with USB & SIREN
Back Cover
Cell Container
Locking Pin
Horn Speaker
Microphone Peg
Coiled Cord
Handgrip
MIC - USB/SD
Switch
Press-To-Talk
Switch
Shoulder Strap
Microphone ON / OFF Switch
Class-D MEGAPHONE
with USB & SIREN
Volume Control
Microphone
External Car Battery/
Charging Connector
Charging LED for
Li-ion battery
Locking Pins for
Cell Container
UnlockUnlock
Li-ion Battery with
Lockable Connector Connector for
Li-ion Battery
25W Max.

3
AM-25DP
Megaphone
AM-25DP
MP3 MODULE
To use the megaphone’s MP3 module, slide the MIC - USB/SD switch to USB/SD
position. MP3 files can be played through the module using SD/MMC card, USB
device or AUX (3.5mm) input.
MP3 ON LED: LED glows to indicate power ON in the MP3 module.
: Press the button to Pause/Play the current track.
: Press once to go to previous track. Long press to decrease volume level
of module.
: Press once to go to the next track. Long press to increase volume level
of module.
M : Press the ‘MODE’ button to toggle between USB, SD/MMC card & AUX input.
NOTE : The ‘MODE’ feature can be used only when more than one source is
inserted in the USB module.
/V-
/V+
OPERATION ON Li-ion BATTERY
! Open the back cover of the megaphone and remove the
cell container, which is fitted with 10nos. (AA) pencil
cells, from the cell compartment.
! Use 11.1V Li-ion battery pack with 2pin lockable
connector, to plug into mating 2pin lockable connector
which is available in the cell compartment.
!Insert this Li-ion battery pack in the cell compartment
and close the back cover.
!Li-ion battery can be charged by connecting 12V 1A adaptor to the car battery
socket, available in the megaphone.
!Charging LED is provided which turns RED to indicate Low Battery and turns
GREEN to indicate Full Battery level.
!For best results, Li-ion battery should be charged before using the megaphone.
11.1V Li-ion battery
with connector
AM-25DP
Class-D MEGAPHONE
with USB & SIREN
USB
Slot
AUX
Input Jack
Mode
Button
Play/Pause
Button
SD/MMC
Card Slot
Module ON
LED
Previous/
Volume-
Next/
Volume+
25W Max.

AHUJA RADIOS
215, Okhla Industrial Estate, New Delhi-110020, INDIA ¡ C-45, Phase-II, Noida-201305 (UP) INDIA
Tel.: [phone] Fax: [phone]
E-mail: [email protected], Website: www.ahujaradios.com
Design and Specifications are subject to change without notice owing to continuous product up-gradation. Technical specifications are subject to
production tolerances. We cannot be held responsible for printing errors, should they occur. is a registered trademark of Ahuja Radios in India
and other countries.© Copyright Ahuja Radios, 2022. All rights reserved. Any unauthorized reproduction or use of logos, images or design elements is
strictly prohibited by law. No part of this compilation may be reproduced in any manner or translated without written permission.
E.& O.E.
®
Megaphone
AM-25DP
MICROPHONE FEATURES: RECORDING, PLAYBACK & SIREN
To use the microphone features keep the microphone ON/OFF switch at ON
position.
Power ON LED: This LED glows when the power to the microphone has been
switched ON.
REC/PLAYBACK LED: This LED glows continuously when recording is in
progress. LED blinks to indicate playback.
REC: Press the ‘REC’ button and begin speaking in to the microphone to start
recording. Release the REC button to stop recording. A message up to 240
seconds (4 minutes) can be recorded.
PLAY: Press the ‘PLAY’ button to playback the recorded message. Release the
‘PLAY’ button to stop playback.
SIREN: Press the ‘SIREN’ button to generate a continuous siren tone. Release the
‘SIREN’ button to stop the siren.
Volume levels for Siren and Playback can be adjusted using the volume control
available on the microphone.
Class-D MEGAPHONE
with USB & SIREN
Volume Control
Playback
Microphone Microphone Power Switch
Siren
Recording
Power ON LED
REC/Playback LED