TUNES2GO RUS-121B User Manual And Installation Instructions

Sondpex Corporation of America

Monmouth Jct., NJ 08852, USA

1-877-997-7888

732-940-4430

[e-mail]

www.sondpex.com

Digital Media Player • Receiver • Bluetooth Handsfree

USER MANUAL AND INSTALLATION INSTRUCTIONS

Model: RUS-121B

Thanks for your purchase!
Our car audio equipment lets you enjoy diversified functions and
enjoy superior music quality. We hope you enjoy this product.

INDEX

Specification __________________________________________ P. 2
Installation ___________________________________________ _ P. 3
Button and key functions _________________________________ P. 5
Radio operation ________________________________________ P. 6
MP3 Play operation _____________________________________ P. 7
Clock operation ________________________________________ P. 8
Bluetooth operation _____________________________________ P. 8
Registration ___________________________________________ P. 10
Electrical Connection Warning ____________________________ P. 10
Troubleshooting ________________________________________ P. 11
Changing the fuse_______________________________________ P. 12
Detaching the front panel _________________________________ P. 12
Connector cleaning ______________________________________ P. 12

CAUTION

 This unit is designed to operate on 12-volts DC, negative

ground electrical system only, do not attempt to install this unit
in a vehicle having a positive ground system. Please do not
install the unit to a +24V truck, bus or RV, otherwise the
machine will be damaged.

 You should not touch the high-polished playback head with any

metallic or magnetic tools.

 Please do not replace the power fuse without professional

guidance. Improper use of fuses may cause damage or fire.

 To avoid electric shock caused by short circuit, or any

unnecessary damage and fire, please prevent the product from

being exposed to a wet environment and water.

 Metal parts of this unit (especially on the back) become quite

hot during operation, avoid touching parts other than the handle
immediately after removing the unit.

Note:

1. When the machine is abnormal in operation, please tap the
Reset key on the panel, the machine will resume to factory
settings.

2. When the inside temperature of car is much higher or lower,
please adjust the temperature in car first, then use the machine.

3. Avoid suffering strong shock or impact, which will damage
structural components of the machine.

4. Operate the unit in accordance with the instruction manual,
damage caused by mal-operation is not covered under warranty.

5. Your unit has a built-in filtering to eliminate most of the noise that

might come through the power source. However, with some
vehicles, particularly older models, some clicking or other unwanted
noise might be present.

Specification:

Tuner Section:

Frequency Range ________________________ 87.5MHz-108MHz
Intermediate frequency____________________ 10.7MHZ
Signal to noise ratio (S/N)__________________ ≥50dB

Play Section:

Signal to noise ratio (S/N)__________________ ≥50dB
Channel Separation (1KHZ) ________________ ≥50dB
Voltage Harmonic Distortion________________ ≤5%
Frequency Response ______________________ 100Hz-10kHz (+6dB)

Amplifier Section:

Output __________________________________ speaker output
Speaker Impedance ________________________ 4Ω-8Ω
Power source_____________________________ 12V DC car battery
(the negative pole connect ground, see on the unit in detail)

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Installation

Precautions

• Choose the mounting location carefully so that the unit will not
interfere with the normal driving functions of the driver.

• Avoid installing the unit where it would be subject to high

temperatures, such as from direct sunlight or hot air from the heater, or
where, it would be subject to dust, dirt or excessive vibration.

• Use only the supplied mounting hardware for a safe and secure

installation.

• Be sure to remove the front panel before installation.

• If installation angle exceeds 60° from horizontal, the unit might not

give its optimum performance.

Installing

1 .Before installing the main unit, please place the main unit at desired
position, connect the speaker wire and power wire for test use.

2. After the working effect of the main unit is ideal, secure the main
unit.

Install the main unit

I. Install the support on the instrument panel of the car, bend the
clamp of the support.
II. Connect the power wire and speaker wire, fix the fixing piece on
the car.
III. Insert the antenna plug, push the main unit into the support, and
tighten the fixing nut of the fixing piece.

Disassemble the main unit

Insert two disassembly keys into the left and right gap, make the keys
hook the main unit, pull it out to remove the main unit from the
support; then disassemble the connection wire and unplug the antenna
plug.

RUS121B Wiring Diagram

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