MOBass MB-130.6D Class D 6CH Full Range Car Amplifier Owner’s Manual

CAR AUDIO SYSTEM
PLEASE READ CAREFULLY BEFORE INSTALLING OR OPERATING THIS UNIT
Owner’s Manual

MB-130.6D Class D 6CH Full Range Car Amplifier

INTRODUCTION

Thank you for your purchase,and welcome to MOBASS I In order to enjoy the better service from us, please keep your original invoice well and complete. You’d better post the copy of back to the appointed service agent of MOBASS so that you may get more technical support. We recommend to use 2GA FOR-X OFC POWER CABLE for installation.

ACCESSORY LIST

SPECIFICATIONS

PANEL CONTROLS AND FEATURES

A. POWER STATUS LED
This Bi-color LED glows green when power is on and no problems are present. If one of the protection circuits comes on, it will change to red.
B. AUDIO SIGNAL INPUT
Cables to connect soure signal with RCA input of the amplifier.
C. LOW PASS CROSS FREQUENCY
Controls the frequency of the power amplifier of low frequency reduction to common denominator is 50Hz to 4KHz.
D. LPF/FULL/HPF FUNCTION SELECT
LPF/FULL/HPF function selector switch
E. GAIN (INPUT LEVEL) CONTROLS
Adjust sensitivity of the power amplifier, the minimum sensitivity: 200mV the maximum sensitivity: 8V
F. BASS BOOST
Adjust the input signal of the bass boost level OB to 10cB.
G. POWER SUPPLY TERMINALS POWER(GND):
Must be connected to the chassis of your vehicle with a perfect electrical connection (remove some paint to reveal bare metal if necessary) and with the ground cable. +12V. Connect the +12V power supply of car battery with the power cable. (Note: power connections}
H. SPEAKER CONNECTIONS TERMINAL
Connect speaker according to silk screen marked position.

WIRING DIAGRAM
When routing cables, keep input signal cables away from power cables and speaker wires if your car audio has only speaker
-level outputs, you must purchase a speaker-level-to-line-level adapter, commonly sold as an accessory.

OPERATION

• After the amplifier has been installed and all connections have been made carefully and securely, turn the radio on so that the amplifier is switched on automatically. After a short power-on period, the amplifier reaches its full performance.
• Now turn up the volume slowly using the volume control of the radio. If there is no sound or only a distorted replay, switch off the radio immediately
  – the amplifier will switch off automatically
  – check if all connections have been made correctly.

POWER LED INDICATOR
After the orderly connection of the three power terminals, the LED indicator shines green and goes out with off.
PROTECT = LED PROTECTION INDICATOR
This set is equipped with an overload protection. immediately upon overloading (due to much increased temperature) the overload protection is activated . and the red LED
indicator is shining. Through this the amplifier is protected against damage. In case of thermal protection a certain short cooling time must be allowed after which the amplifier automatically resumes operation.

LEVEL CONTROL

• The input level control allows the system to work well within a wide range of output level. Choose the adjustment in the way that you achieve a sound most possibly without any distortion. As a guideline the following procedure is recommended:
  – If you use several amplifier, the adjustment has to be made for each set separately tune in the volume of your car radio to 2/3 of the maximum volume. Now tum the gain control of the amplifier from “Min” to “Max” direction until you can hear distortions. Then turn the level control a little back to “Min”. The gain control adjustment is finished now.
  ATTENTION: If you use 1 Ohm speakers the overload protection is triggered out, tum the gain control to “Min” direction, until the operation is free of trouble.

BASS BOOST CONTROLS
This amplifier has Bass controls for switching the boost 0dB or 12dB.

+12V = POWER SUPPLY
Connect the BATT terminal to the positive pole of the battery with a lead cable and add a fuse into the power cable in a distance of not more than 30cm from the battery. The lead cable’s diameter should be at least 4 mm’ for a length of 3m and 6 mm” for a length of 6m.

GND(-) = GROUND CONNECTION
Connect the GND terminal to the chassis ground of your car and take care of best electric and mechanic contact. In doing so, drill a hole into the car chassis near the amplifier then remove color, dirt or any other substance from the ground point . Thereafter fasten the cable end with added ring terminal by using a screw. Ensure that the ground connection is as short as possible and that the cable diameter is sufficient (min 4mm”). Route the ground cables from the radio and all other equipment pants, like equalizer, active crossover network or other amplifiers, to the same ground point.

HOW TO PROCEED IN CASE OF FAULTS

No Function:

• The connection cable is not connected corectly (=terminal +12V/GND/REM). Ensure that all connections and mechanic contact and that the jacket has been removed. The fuse is defective-pay attention to the correct value of a new fusel

No Sound :

• Speaker cable or speaker plug are not connected corectly.

No Sound / Red LED Protection Shines :

• The plus and minus wires of the speaker cable have contact, thus eliminate the short circuit. If you use a 2 Ohm speaker in stereo mode, a 4Ohm speaker in bridge mode or tri-mode and the set is overloaded, then turn the gain control to “min” until the operation is free of trouble.

Poor Sound Quality (Distortions) :

• The speakers are overloaded therefore turn down the volume level and check the volume control positions.

No Stereo Sound And A Weak Bass :

• Speaker cables (+) and (-) are mixed up, unit wired out of phase.

PRECAUTIONS

• This unit is designed for negative ground 12-14.50 Volts(DC) operation only.

• Use speakers with an impedance of 2Q or 40

• Avoid installing the unit where:
  – It would be subject to high temperatures, such as from direct sunlight or hot air from the heater.
  – It would be exposed to rain or moisture.
  – It would be subject to dust or dirt.

• If your car is parked in direct sunlight and there is a considerable rise in temperature inside the car, allow the unit to cool off before operation.

• When installing the unit horizontally, be sure not to cover the heatsink fins with the floor carpet.

• If this unit is placed too close to the car radio, an interference may occur. In this case, separate the amplifier from the car radio.

• This power amplifier employs a protection circuit to protect the transistors and speakers if the amplifier malfunctions.

• Do not attempt to test the protection circuits by covering the heatsink or connecting improper loads.

• Do not use the unit with a weak auto battery as its optimum performance depends on a normal battery supply voltage.

• For safety reasons, keep the volume of your car audio system moderate so that you can still hear normal traffic sounds outside your car.

PROTECTION CIRCUIT
This amplifier is provided with a protection circuit which operates in the following cases when:
– the unit is overheated.
– the speaker terminals are short circuited.

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