Alford STF2010 User Manual
TROUBLESHOOTING GUIDETROUBLESHOOTING GUIDE
Caution: Any changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
SYMPTOM CAUSE SOLUTIONSYMPTOM CAUSE SOLUTION
Turn on the headphone.
Change batteries.
Turn on the transmitter’s power.
Turn the volume up.
Move closer to transmitter.
No soundNo sound
Headphone is not turned on.
Batteries are exhausted.
Transmitter’s power is off.
Headphones’ volume is completely
turned down.
Automatic”muting”at headphone.
15-Mar-04 R.03
INSTRUCTION MANUALINSTRUCTION MANUAL
SPF-2010
Headphones’ batteries are weak.
Poor sound qualityPoor sound quality
Out of range
Change batteries.
Move closer to transmitter or
adjust the transmitter antenna
SPECIFICATIONS
Communication level mode Radio Frequency(49.86MHz)
Communication level Stereo
Power requirement:
Transmitter 12V 100mA AC/DC adapter
Headphone(receiver) 3V (2x1.5V AAA carbon, alkaline, Ni-Cd batteries)
Frequency Response 30-10000Hz
S/N Ratio 42 dB
Distortion 1%
Max operating distance Maximum 25 meters
Weight:
Transmitter (without adapter) 105g
Headphone (without batteries) 122g
Standard Accessories AC/DC power adapter(for transmitter)
3.5mm to 6.3mm Plug Adapter
3.5mm to RCA (stereo) Patch cord
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
1.This device may not cause harmful interference,and
2.This device must accept any interference received.Including interference that may cause
undesired operation.
RADIO FREQUENCY
RADIO FREQUENCY
CORDLESS HEADPHONE SYSTEM
CORDLESS
HEADPHONE SYSTEM
SYSTEM COMPONENTSSYSTEM COMPONENTS
On/Off Indicator
Audio cordwith 3.5mm plug
TRANSMITTER
12V 100mA AC/DC
ADAPTER
Battery
Compartment
On/Off Switch
Wire antenna
Power On/Off
Indicator
Volume Control
CORDLESS HEADPHONECORDLESS HEADPHONE
3.5mm to 6.3mm PLUG ADAPTER
3.5mm to RCA (STEREO) PATCH CORD
13-Mar-04 R.01
INSTALLATION
For the following illustration, we use television as the audio source equipment.
For actual usage, you may select any type of audio source equipment for connection.
I.Equipment with 3.5mm phone jack
If the audio-out jack of your
equipment is a type,
connect the audio out jack
with the audio cord attach-
DC-IN
ON OFF
II.Equipment with 6.3mm phone jack
If the audio-out jack of your
equipment is a 6.3mm
type, plug in the supplied
“
3.5mm to 6.3mm plug
adapter”
jack of your equipment,
then connect it with the
audio cord attached at the
back of the transmitter.
to the audio-out
3.5mm to6.3mm plug adapter
III.Equipment with RCA jack
DC-IN
ON OFF
DC-IN
ON OFF
ed at the back of the transmitter.
If the audio-out jack of your
equipment is a RCA type,
plug in the supplied
mm to RCA (stereo) patch
to the audio - out of
cord ”
your equipment , then connect it with the audio cord
attached at the back of the
transmitter.
3.5mm
“3.5
IMPORTANT:CONNECTION TO MONO EQUIPMENT
DC-IN
ON OFF
black
3.5mm toRCA
(Stereo) patchcord
When your audio/video equipment is a type.
Only one side of the headphone is heard.
mono
red
Do notattach
POSITION OF THE TRANSMITTER
This cordless headphone system is designed for indoor use within a distance of 25 meters between
the transmitter and the receiver.
Note: Do not place the transmitter in a location near sources such as radiators, heater, or any place
subject to direct sunlight or vibration.
OPERATION
1.Turn on your audio equipment and the transmitter. You will be able to see the LED power indicator
light go on.
2.Set the volume of your audio equipment at medium level.
3.Turn on the headphone receiver, the LED, power indicator should go on. Adjust the size of the
headphone by pulling up or down on each side until it fits on your head comfortably. Adjust the
audio volume as desired.
BATTERY CHANGE
1.Make sure headphone receiver is off.
2.Slide open battery compartment cover.
3.Insert two AAA (1.5V) batteries with the (+) and (-) poles
correctly aligned into the battery compartment.Alkaline
type or Ni-Cd rechargeable type batteries are recommended.
4.Close the battery compartment.
-AAA+
+AAA-
3.5mm toRCA (Stereo) patch cord
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