TK MR2800 User manual
AKER VOICE AMPLIFIER
Model MR2800 16Watts
English Owner’s Manual
Thank you for purchase an Aker Voice Amplifier from TK Products, LLC. You have purchased the highest
quality and most innovative voice amplifier in the world. We hope that this amplifier will protect your voice
and throat from soreness and fatigue while allowing you to be heard by large groups of people. You will find
that the Aker Voice Amplifiers are easy to use and very effective. This owner’s manual will hopefully
address all of your questions. We welcome your suggestions for improvement.
Features:
Long usage time between charges 12-16hrs
Long Battery Life
Loud clear sound and easy to use
FM Radio with automatic tuning
SD Card socket and USB drive socket for playing
MP3 music.
Case is made of high impact strength ABS plastic.
Two input ports, one for a microphone and one for
sound input from devices like a MP3 player. Note:
both input ports can be used at the same time.
Package Contents:
MR2800 Voice amplifier with built in
rechargeable lithium batteries.
Wired microphone with headset
Male to Male 3.5mm audio patch cable
(for MP3 players)
Battery charging power adapter cable
(110v to 240v)
Adjustable waist belt.
Convenient storage bag
Using the FM Radio:
1. Plug in the included Audio cable into the Audio Input Port. The cable will act as antenna.
2. Turn on the amplifier and press and hold the Play/Pause/FM Switch button for 2 seconds.
3. Use the Forward and Back button to tune channels.
4. To auto program the channels press the Play/Pause/FM Switch button briefly. The Amplifier will then
cycle through and find local stations then program them. Once the cycle stops you may use the Forward
and Back button to change programmed channels.
Using a SD Card or USB Drive to play MP3 Music:
1. Insert a SD card or USB drive into one of the ports on the amplifier. Note, the Amplifier will only play
MP3 formatted files. The files must not be in a folder and there must only be mp3 files on the card/drive
or it will not play the files.
2. Turn on the voice amplifier and then briefly press the Play/Pause/FM Switch button. Music will begin to
play. Use the Next or Previous button to cycle through the MP3 files.
3. To repeat the current song press and hold the Previous/Back Button for 2 seconds.
4. To repeat all songs for continuous play, press and hold the Next/Forward Button for 2 seconds.
Charging the Battery
The voice amplifier comes fully charged and ready to use. When the amplifier is on and if the LED
is dim RED or can’t be seen then it is time to charge the amplifier.
To
Charge: 1. Shut off the voice amplifier.
2. Insert the plug of the power adapter into the charge socket on the amplifier.
3. Plug the power adapter to a power source. Voltage can range from 110v to 240v.
4. When charging the LED will FLASH between RED and GREEN.
5. The LED will show a solid GREEN when completely charged. Charging will
take 4-6 hours depending on voltage.
Note: to extend battery life it is best to only charge after the battery completely runs
out of power. The battery should last 2-4 years before it needs to be replaced. Please
contact TK Products, LLC for replacement batteries and replacement procedures.
Using the Voice Amplifier
1. Attach the voice amplifier to your waist using either the belt clip or the waist band.
2. It is recommended that you wear the microphone headset as shown in the diagram.
3. For best performance adjust the microphone tip so that the two holes inside the sponge aim at
your mouth and the tip is 1 to 1.5 inches (2-3cm) from your mouth. An easy way to tell the
correct position is to make sure the white line on the microphone tip is facing your mouth.
The microphone is directional so placement is very import for controlling feedback.
4. Insert the plug of the microphone into the port labeled “microphone” on the voice amplifier.
5. Turn the volume dial to turn on the voice amplifier and to adjust the volume. The LED RED
light will turn on when the voice amplifier is on.
6. Adjust the volume level to the desired loudness. You can reduce feedback or screeching by
reducing the volume or moving the speaker further from the microphone.
Note: For the best sound performance and clarity please use the microphone that has been provided
with this voice amplifier.
FAQ:
Question: Why does the voice amplifier produce feedback or screeching and how do I reduce it?
Answer: You can reduce feedback or screeching by reducing the volume or moving the speaker
further from the microphone. Make sure the white line on the microphone tip is facing your mouth.
Question: How long does the battery take to charge?
Answer: the typical battery charge time is 4-6 hours.
Question: My voice amplifier will not work or produce sound?
Answer: Check that your microphone is plugged into the correct port, your battery is charged, and
the voice amplifier is turned on to an audible volume. If you continue to have problems please
contact TK Products, LLC for help.
Output Power: RMS 16watts Weight: 0.67 lbs
Frequency Response: 100hz±13db1khz±1db Voltage: 7.5 v
Speaker Sensitivity: 53 dBV/A +- 3 dB Current Consumption: 150 mA
Dimensions: 3.9” x 3.6” x 1.8 Battery charge life: 12-16 hours
For Questions, Comments, Suggestions, Technical Support, and Sales: CustomerService@TKProductsLLC.net
TK Products, LLC - Cleburne, Texas - Rev042412
www.TKProductsLLC.net
