Uni-Art SP4090 User manual

SP4090
Wireless Stereo 900MHz
Speaker System
User’s Manual
Please read before using the equipment

INTRODUCTION
This 900 MHz stereo 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 iPod/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 stereo in minutes.
FEATURES
zAutomatic Phases Lock Loop (PLL) scanning system on speaker receivers
zPhase Lock Loop (PLL) transmission system on transmitter
z900 MHz RF technology panel-like speaker systems.
zRF technology lets you roam freely throughout your house.
zOperating distance up to 50 Meters
zNo line of sight limitation.
zVirtually interference free stereo quality.
zALC and auto ON/OFF control.
zAuto tuning function.
zBass boost function
zStereo (L and R) and Mono Selection
PACKAGE INCLUDES
1 x Transmitter
1 x AC/DC 8V 200mAPower Adaptor for Transmitter
2 x Speakers
2 x AC/DC 9V 1.2A Power Adaptor for Speakers
1 x 2M Long Audio Cable
1 x Short "Y-Cord" RCAAdapter Cable.

COMPONENT IDENTIFICATION
TRANSMITTER
SPEAKER RECEIVERS
1. Power LED Indicator
2. Signal LED Indicator
3. Audio In
4. Channel Selector
5. DC In (8V)
6. Battery Compartment
7. Volume Down
8. Power/Signal LED Indicator
9. Volume Up
10. Boost Bass
11. Auto Scan
12. Left / Mono / Right
13. DC In (9V)

INSTALLATION
TRANSMITTER
1. Plug the supplied 8V AC/DC power adaptor in the DC jack located on the
rear of the transmitter.
2. Connect the supplied 8V AC/DC power adaptor to an electrical wall outlet.
The Power LED then glows.
3. The transmitter can be connected to audio output jack of TV, Monitor, VCR,
Radio, CD, MP3, VCD or DVD players with the cables provided.
Having finished the above simple wiring, Signal LED glows when the transmitter
detects audio input signal played from the source.
SPEAKER RECEIVERS
1. Remove the door of the battery compartment.
2. Insert 6 pieces of ‘AA’ size ALKALINE batteries into the battery compartment
with correct polarity under the speakers, then replace the door of battery
compartment, or connect the provided AC/DC 9V Adaptor to the DC input
jack under the speakers, then plug it to the wallAC outlet.

OPERATION
1. Turn on the audio source to which the transmitter is connected with. The
Signal LED on transmitter will light up.
2. Select a channel of the transmitter for best performance in your location.
3. Select the L/M/R (Left/Mono/Right) selector under the speakers, one to Land
the other to R for the best stereo reception. In case the audio device only
provides Mono audio signal, select to M (Mono) for the best mono reception.
4. Turn on the speakers by pressing both the Volume Up and Down Buttons
simultaneously, the LED in front of the speaker glows. To switch off the
speakers, press both the Volume Up and Down Buttons simultaneously
again.
5. Push the “AUTO SCAN” button to get the best tuning reception under the
speakers. When the button is pressed, frequency tuning starts automatically
and it stops when a signal is detected. The glowing LED will be changed to
GREEN which represent proper reception. Adjust the volume to the desired
listening level by pressing Volume Up or Down.
a). Keep a distance of 7 meters between speaker and transmitter, and then press
“ AUTO SCAN “ button for best tuning reception.
b). Once the frequency is jammed, select another channel on the transmitter, then
press “AUTO SCAN “ button again.
6. The “BOOST BASS” button can be used to enhance the bass sound
depending on your own music preferences. Turn the effect ON simply by
pressing the button down, and pressing it once again to OFF.
If the power of the transmitter is being cut off, or no audio signal is playing from the
source, the glowing LED on the speakers will be changed from GREEN to BLUE
in 4 minutes, even if the frequency between speakers and transmitter is properly
matched.

Signal LED on the Transmitter would be cut off automatically if there is no/weak
operation input signal from audio source for 4 minutes. When the signal comes
back, the transmitter will work again automatically.
NOTE :
You should now be able to place the speakers freely from room to room without
disruption. If disruption should occur (signal breaks up), press the “AUTO SCAN”
button under the speakers to maximize best reception.
If you hear interference from other components, switch the channel control of
transmitter, and then move the speakers to other free location. You can re-adjust
the tuning control by moving it among channels of the transmitter, then pressing
“AUTO SCAN” button of the speakers for best reception.
When transmitting / receiving over long distances, the signal from the system will
become weaker.

TROUBLE SHOOTING
NO SOUND
zEnsure the AC adaptor is fully inserted into the AC outlet and the power
connection input on the transmitter.
zEnsure the speaker is switch ON.
zSpeaker’s battery capacity is too low, replace with new batteries or connect
the AC adaptors to the speakers.
zEnsure the TV or audio component is ON.
zThe connected audio / video equipment is not playing. Start playing the
equipment.
zThe volume of speaker is too low, adjust the volume to an appropriate level.
DISTORTED
zPress the “AUTO SCAN” button under the speakers until the frequency
between the transmitter and speakers are matched.
zChange the position of the channel selector on the transmitter. You must
then press the “AUTO SCAN” button on the speakers.
zBattery capacity is too low. Replace with the new battery.
zEnsure the volume level of speakers is adjusted properly.
zThe speaker is too far away from transmitter, move them closer.
zThe input level of the audio signal is too low. Turn up the volume of the
audio source equipment.

TECHNICAL SPECIFICATIONS
Transmission Mode : UHF stereo
Carrier Frequency : 912 MHz, 913MHz
Operation Voltage : Transmitter, AC/DC 8V 200mA Power Adaptor
Speaker, 6 X ‘AA’ size Alkaline Batteries or
AC/DC 9V 1.2APower Adaptor
Frequency Response : 40Hz – 12KHz
Distortion : 1.5%
S/N Ratio : 65dB
Channel Separation : 30dB
Operation Distance : Up to 50 meters (open area)
Output Power : 2 x 3.5W (RMS)
Operating temperature Range : 5-45℃
WARNING : Batteries (battery pack or batteries installed) shall not be
exposed to excessive heat such as sunshine, fire or the
like.
FCC Caution:Any changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate this
equipment.
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.
This device complies with RSS 210 of Industry Canada.
"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 Class B digital apparatus complies with Canadian ICES-003."
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du
Canada.