MB QUART RAl-150.2 Channel Amplifier Installation Guide
- June 5, 2024
- MB QUART
Table of Contents
- MB QUART RAl 150.2 Channel Amplifier
- Power cable size
- Installation
- Positive Battery Connection
- Reconnect Negative Battery Terminal
- Common System Setup
- Setup
- LEVEL SETTING
- Remote Level Control
- Turn on Mode
- REM TURN ON/ DC SENSE ON SWITCH
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
MB QUART RAl 150.2 Channel Amplifier
CAUTION
Many new and factory radios require a reset code when disconnected from
battery power. This is an anti-theft feature. Before unplugging power, you
must determine if your radio/source unit requires a reset code. Check the
operation manual for your vehicle or contact the dealer.
Power cable size
It is critical to use the proper power and ground cable. Select the size listed here for your amplifier model. Always use high quality copper cable.
Power cable size and fuse size based on a 17ft power (B+) (OFC) cable length and 18-inch ground (OFC) oxygen free cable. Anv other lenaths used please consult a certified professional installer.
Installation
Disconnect Negative Battery Terminal
Place terminal in a secure position so that it won’t accidentally contact the negative battery post.
Run Cables
Properly route power, speaker and RCA cables through the vehicle.
Mount Amplifier
Choose a mounting location that will provide adequate air ventilation. Mount the amplifier to a secure surface. Do not mount the amplifier upside down.
Chassis Ground
The chassis ground connection is critical to the performance of the amplifier. Choose a location that is close to the amplifier. Completely scrape away the paint and use a nut and bolt if possible. DO NOT USE AN EXISTING FACTORY BOLT.
Negative Power
Connection Attach the chassis ground cable to the amplifier negative terminal. It is important to make sure this connection is very tight.
Remote Turn on Connection
Attach the remote turn on wire to the amplifier remote output of the source unit.
Positive Power Connection
Attach the main power cable to the amplifier+12V. The cable must run directly to the battery and be properly fused and be very tight.
Signal Input Connection
Connect the RCA cables to the INPUT connectors.
Level Control
Turn the LEVEL control completely counter-clockwise to minimum.
Positive Battery Connection
Connect the power cable to the positive battery terminal. The power cable must be fused within 18 inches of the battery terminal. Be prepared to disarm your vehicle’s alarm and to enter your radio/ source unit code.
Reconnect Negative Battery Terminal
Reconnect the negative battery terminal making sure it is securely tightened.
Common System Setup
2ch Full Range
CROSSOVER MODE
4ch Full Range
Set INPUT MODE switch to 4C. Set CH3&4 LOW PASS MODE.
4ch Mixed
MonoSet INPUT MODE switch to 4CH. Set CH3&4 LOW PASS MODE.
Mono
5 ch
Setup
To gain access to the RA1 amplifier series top mount setting.
Open control panel
Open Controlthe four screws and lift the face Panel plate up. When you’re finished with the control panel mindfully put the face plate back together with the four screws. Make sure not to over tighten.
Settings
LEVEL Adjustment
The level control purpose is to match the output of your source signal to the amplifier.
X OVER Switch
This switch will set the amplifier to have a full frequency output or to filter out high or low frequencies.
Frequencies Adjustment
The Low Pass Filter will cut off the frequencies above the setting. The High Pass Filter will cut off the frequencies below the setting.
SUBSONIC SWitch
The Subsonic Switch will cut off the frequencies below the setting.
BASS BOOST
A The Bass EQ control will increase the power output at 45Hz for more pronounced bass. Exercise caution when using this control. Increase the level in small amounts until distortion is noticed, then back off a little.
RA1-300.1 / RA1-750.1
RA1-300.1 / RA1-750.1
RA 1-280.4
RA1-710.5
LEVEL SETTING
This is a critical step to insure your amplifier is properly adjusted to match the signal output level of your source unit.
THIS IS NOT A VOLUME CONTROL
- If possible, with the source unit off, confirm that the primary volume control is turned down (counter clockwise).
- Turn on the source unit CD, or MP3 player.
- Reconfirm that the volume is turned down.
- Make sure the source unit controls; balance, fader, bass and treble are all set to center or O adjustment.
- Make sure that the green LED on the end of the amplifier is illuminated.
- Play a clean musical selection of which you are very familiar. CD is preferred.
- Do not use radio signals for level setting. Hit play and start turning the volume of the source unit up.
- Stop increasing the source unit volume when you reach 3/4 about 75% or until you hear speakers begin to slightly start producing distortion.
- Increase the amplifier gain (clockwise) until distortion is heard, then back the level down counter clockwise until the distortion is eliminated.
- Small adjustments may need to be made to balance the levels of multiple amplifiers.
Remote Level Control
Some models include a bass remote. Avoid adjusting the bass remote while operating vehicle.
Turn on Mode
REM turn on SIGNAL SENSE ON, High level input DC turn on.
REM TURN ON/ DC SENSE ON SWITCH
There are two methods of switching the amplifier on and off. Select the appropriate position suited for your application.
REM TURN ON
This will turn on the amplifier when a +12v switched power typically from a source unit, is connected to the Amp Turn on. BLUE wire on the main power connection harness.
DC SENSE
The DC SENSE is for use with the source units that do not offer RCA outputs.
NOTE
If the RCA’s are plugged into the amplifier and the TURN ON MODE is in the DC
ON position, the amplifier will NOT turn on. Please read this document or hire
a professional installer.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>