NHS JF 105 User manual

Personal
Voice Amplifier
Instructions
Technical Specifications
Product code: JF105
Voice Aid portable 18W RMS Digital Voice Amplifier
Battery charger: DC9V / 650mA
Battery operating time: 12 hours of continuous use
Maximum power output: 18 watts RMS
Output impedance: 4W
Frequency response: 100Hz – 20KHz
Operation voltage: DC9V, 6450 mA
Recharge time: 3-5 hours
Weight: 209gms
Dimensions: 88mm (W) x 40mm (D) x 98mm (H)
CE marked
Did you know?
This voice amplifier is designed with an inbuilt noise and feedback interference
reduction function. Always avoid positioning your microphone near the speaker
unit when switched on, as this can cause the unwanted feedback. Microphone
squeal is caused by feedback. Feedback happens when your microphone picks
up the output sound from the voice amplifier speaker, which it then re-amplifies
causing a loop which is caused by the microphone picking up the original amplified
sound and amplifying it again and again...until the sound can’t be amplified
anymore and something has to give. Usually your listener’s ears!
Look After Your Voice
•Drink lots, but not alcohol or caffeine. Sip fluids throughout the day.
•Always have a bottle of water to hand.
•Take a sip of water whenever you feel the urge.
•Avoid throat clearing as it can irritate your throat further.
•If you have any symptoms of heartburn, indigestion, or reflux, get it
treated by a doctor.
•Chewing a non-mint based gum often (particularly gum containing
bicarbonate of soda) may help by generating saliva and relaxing the
muscles around the throat through repetitious movement.
•It may also help with reflux (flow of stomach acid/contents) into the
larynx.
•Steam inhalations can be soothing. Use them regularly. Aim for five
minutes twice a day.
Voice Aid-Unex Designs Ltd, Torquay, Devon, UK, TQ2 7AT
Customer Support
t: 01803 612772 e: [email protected]t w: www.voiceaid.net Batch No: U6393-516 JF 105
www.parkinsons.org.uk
www.britishvoiceassociation.org.uk
www.lary.org.uk
www.torbayandsouthdevon.nhs.uk
Helpful voice-related website links
Also available
Throat microphone Skin coloured
headset microphone
Pack of 10
replacement foam
mouth pieces
Padded
Carry Case

•Before use, you will need to charge the voice amplifier. To do this simply
plug the charger into the top socket DC 9V (4) on the side of the voice
amplifier unit for 3 to 5 hours.
•When the voice amplifier is charging, you will see a flashing red light (1).
When fully charged , the red light will stop flashing and remain constant
until you disconnect the charger. Your voice amplifier is now ready to use
for up to 12 hours.
• Before plugging in a microphone ensure the unit is switched off. To
switch off simply roll the volume switch (7) to the left until it clicks shut.
Select the microphone you wish to use - headset or clip on lapel, (or
optional throat microphone - not included in this pack), and plug into
MIC SOCKET (6) on the side of voice amplifier unit.
•
When using the voice amplifier, a blue light (2) will appear and when
you plug in a microphone an orange light (3) will appear to tell you the
microphone is connected and your voice amplifier is ready to use.
•
Always start with a low volume by rolling the VOLUME SWITCH (7)
to the right a little, and then increase this action until you reach the
required volume.
• Avoid the microphone being too close to the voice amplifier speaker
as this can trigger feedback interference (a squealing sound) from your
speaker (see explanation about feedback on the back page of this leaflet.)
•
Do not hold the microphone any closer than 2.5cm (1”) from your mouth.
•
You have a choice of HEADSET MICROPHONE or CLIP ON
MICROPHONE. Both have recently been upgraded for even better
performance. The lapel microphone was omni-directional (picks up
sound all around in the room) and is now uni-directional which means it
is now directed towards your mouth and therefore more efficient.
• The CLIP ON MICROPHONE can be clipped onto your lapel, collar, or
clothing. You can even clip the microphone onto your cuff (cable can be
hidden by running it inside clothing) then simply raise your hand to the
proximity of your mouth when you wish to speak.
•
The AUX SOCKET (5) on the side of your voice amplifier is for use with
your MOBILE PHONE or PC. Simply plug one end of the auxillary cable
provided into the AUX SOCKET (5) and the other end into your phone
or PC speaker / audio-in socket.
•
If you also wish to use the unit for playing music, you can use the TF
CARD SOCKET (13) or USB FLASH DRIVE (MP3) SOCKET (8). You
can then select MODE (10) (short press ‘M’ to switch U disc to TF card
play, and long press MODE (10) for continuous play (loop) - additional
functions for playing music are PL AY/ PAUSE (10), PREVIOUS (9)
and NEXT (12)
1Charging indicator light
2Voice amplifier light
3Mic indicator light
4DC9V Charger input
5Auxillary socket
6Microphone socket
7ON/OFF / volume control
8USB (Flash/MP3) Socket
9Previous
10 Mode
11 Pause/Play
12 Next
13 TF card socket
Personal
Voice Amplifier
Instructions
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