Uni-Art SP2790 User manual

SP2790
900MHz Wireless Outdoor/Indoor Speakers
System
User’s Manual
Please read before using the equipment

P.1
INTRODUCTION
This 900 MHz wireless speaker system uses latest wireless technology that enables
you to enjoy music and TV sound anywhere inside or outside your home. You can
simply connect the system to any audio source such as Radio, TV, VCR, Hi-Fi and
CD/MP3/VCD/DVD player. Without complicated wiring and installation with your
Audio/Video equipments and rear channel amplifier, the system enables you to
enjoy thrilling, lifelike sound in minutes.
FEATURES
1. 900 MHz RF technology panel-like speaker system.
2. Phase Lock Loop (PLL) technology on transmitter.
3. RF technology lets you roam freely throughout your house.
4. Operating distance up to 50 Meters.
5. Remote control unit for your convenience.
6. No line of sight limitation.
7. Virtually interference free stereo quality.
8. ALC and auto ON/OFF control.
9. Auto tuning function.
10. LED lighting effect

P.2
COMPONENT IDENTIFICATION
TRANSMITTER REMOTE CONTROL
SPEAKER RECEIVERS

P.3
INSTALLATION
TRANSMITTER
1. Insert the antenna tube into the antenna wire.
2. Connect the supplied AC/DC power adaptor to an electrical wall outlet.
3. Plug the AC/DC power adaptor in the DC jack located on the rear of the
transmitter.
4. When the AC adaptor is plugged in, the blue POWER LED illuminates. If the
blue POWER LED does not illuminate, make sure the adaptor is plugged in.
5. The rear of the transmitter has one RCA input that can be connected to audio
output jack of TV, Monitor, VCR, Radio recorder, CD/MP3/VCD/DVD players or
to headphone/earphone jack with the connector provided.
When the transmitter received an audio signal, the green SIGNALLED and the blue
POWER LED will illuminate together. If the green SIGNAL LED does not illuminate,
ensure the audio source is turned on.
SPEAKER RECEIVERS
1. Insert 6 pieces C size ALKALINE battery into the battery compartment with
correct polarity at the bottom of the speakers (batteries not included in the
package) or connect the 12V power adaptor to the DC input jack on the bottom
of each speaker, then plug it to the wall AC outlet.

P.4
2. Press POWER button and turn the speakers ON. The POWER LED will light
up in blue. Switch off the speakers by pressing the POWER button on the
speaker, and the LED will be off.
OPERATION
1. Turn on the audio source (TV or audio component) to which the transmitter is
connected with. The green LED on the transmitter will light up.
2. Select the channel (1/2/3) of the transmitter for best performance in your
location.
3. Press the “POWER” button on the speaker to turn on the speaker. Press the
“AUTO TUNE” button to get the best tuning reception in the speakers. When
the button is pressed, frequency tuning starts automatically and it stops when a
signal is detected.
4. Volume can be adjusted up
by pressing “+” button or
down by pressing the button
“-“ to the desired listening
level.
5. Press the “LIGHT” button to
turn ON of OFF the blue LED
lighting.
NOTE :
a). Keep a distance of the speaker up to 7 meters apart from the transmitter,
and then press “AUTO TUNE” button for the best reception.
b) Whenever you find frequency jam, move your channel switch from one
channel to the other channel (there are two channels for selection) on the
transmitter, and then press the “AUTO TUNE” button again.
6. You should now be able to place the speakers freely from room to room
without disruption. Should there is any disruption (signal cuts off or carries
distortion), press the speaker’s “AUTO TUNE” button to maximize the best

P.1
reception.
If you hear interference from other components, switch on the channel control
of transmitter, and then move the speakers to other free location. You can
re-adjust the tuning control by moving it either channel 1 , 2 or 3 of the
transmitter, then pressing “AUTO TUNE” button for best reception.
When transmitting / receiving over long distances, the signal from the system
will become weaker.
7. Switching Off
a) For protection of the transmitter and power saving, the transmitter will cut
off automatically if there is no/weak operation input signal from audio
source for 4 minutes.
In other words, if the signal comes back, the transmitter will work again
automatically.
b) Press the “POWER” button to turn off the speaker and the LED light goes
off.
TROUBLE SHOOTING
NO SOUND
- Ensure the AC/DC adaptor is fully inserted into the AC outlet and the
power connection input on the transmitter.
- Ensure the speaker is switch ON.
- Speaker’s battery capacity is too low, replace with new batteries or
connect the AC/DC adaptors to the speakers.
- Ensure the TV or audio component is ON.
- The connected audio / video equipment is not playing. Start playing the
equipment.
- The volume of speaker is too low, adjust the volume to an appropriate
level.

P.2
DISTORTED
- Press the “AUTO TUNE” button on the speakers until matching the
frequency of the transmitter.
- Change the position of the channel selector on the transmitter. You
must then press the “AUTO TUNE” button on the speakers.
- Battery capacity is too low. Replace with the new battery.
- Ensure the volume level of speakers is adjusted properly.
- The speaker is too far away from the transmitter, move it closer.
- The input level of the audio signal is too low. Turn up the volume of the
audio source equipment.
TECHNICAL SPECIFICATIONS
Transmission Mode : UHF
Frequency Range :
Operation Voltage : Transmitter, DC 12V 200mA
Speaker, 6 X D size Alkaline batteries or DC 9V
1.2A adaptor.
Remote Control, 2 X “AAA” size Alkaline
batteries (not included).
Frequency Response : 40Hz – 12KHz
Distortion : 1%
S/N Ratio : 65dB (typical)
Channel Separation : 50dB (typical)
Operation Distance : Up to 50 meters (open area)
Output Power : 2 x 5Watts (RMS)
912.0 MHz, 912.5 MHz, 913.0 MHz

P.3
WARNING : MODIFICATION OF THIS DEVICE TO RECEIVE CELLULAR
RADIOTELEPHONE SERVICE SIGNALS IS PROHIBITED
UNDER FCC RULES AND FEDERAL LAW.
Changes or modifications to this unit not expressly approved by the
party responsible for compliance could void the user’s authority to
operate the equipment. Operation is subject to the following two
conditions: (1) this device may not cause interference, and (2) this
device must accept any interference, including interference that
may cause undesired operation of the device.
This device complies with RSS-210 of Industry and Science
Canada.
Operation is subject to the following two conditions : (1) this device
may not cause interference, and (2) this device must accept any
interference that may cause undesired operation of the device.
This device must be used with the AC/DC adaptor supplied in the
package.
NOTE: This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more of
the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.