MB Quart RA1 Series Mono Subwoofer Amplifier User Guide
- July 4, 2024
- MB QUART
Table of Contents
MB Quart RA1 Series Mono Subwoofer Amplifier
Specifications
- Model: RA1-150.2, RA1-280.4, RA1-300.1, RA1-750.1, RA1-710.5
- Fuse Size: 20A External, 40A External, 40A External, 80A External, 80A External
- Power Cable Size: Based on a 17ft power (B+) (OFC) cable length and 18-inch ground (OFC) oxygen-free cable
Product Usage Instructions
- Place Terminal Securely: Ensure the terminal is positioned securely to avoid accidental contact with the negative battery post.
- Run Cables: Properly route power, speaker, and RCA cables through the vehicle.
- Mount Amplifier: Choose a location with adequate ventilation, mount it securely, and ensure it is not upside down.
- Chassis Ground Connection: Scrape paint away, and use a nut and bolt for connection near the amplifier.
- Negative Power Connection: Attach the chassis ground cable tightly to the amplifier negative terminal.
- Remote Turn-on Connection: Connect the remote turn-on wire to the amplifier remote output of the source unit.
- Positive Power Connection: Attach the main power cable directly to the battery, fuse properly, and ensure a tight connection.
- Signal Input Connection: Connect RCA cables to the input connectors and set the LEVEL control to a minimum.
- Crossover Mode: Set INPUT MODE switch to 4CH. Set CH3&4 LOW PASS MODE.
- Subsonic Frequency: Set INPUT MODE to 5CH. Set CH1 &2 and CH3&4 CROSSOVER switch to HP.
To access the RA1 amplifier series top mount setting control panel, remove the four screws and lift the face plate carefully.
FAQ
- Q: Why is it important to use the proper power and ground cable size?
- A: Using the correct cable size ensures optimal performance and prevents damage to the amplifier.
- Q: How do I determine if my radio/source unit requires a reset code?
- A: Check the operation manual for your vehicle or contact the dealer to confirm if a reset code is needed when disconnecting from battery power.
Before you start
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.
- Congratulations on your choice of an MBQuart amplifier. This “Quick Start Installation” guide is meant to help you “hook up” and play music.
- For more detailed information, on system settings, speaker and subwoofer configuration and full specifications by model please visit our website at www.MBQuart.com.
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 cables.
-
Power cable size and fuse size are based on a 17ft power (B+) (OFC) cable length and an 18-inch ground (OFC) oxygen-free cable.
-
Any other lengths used please consult a certified professional installer.
Installation
Disconnect Negative Battery Terminal
- Place the 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 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 a minimum.
Positive Battery Connection
-
Re-connect the negative battery terminal making sure it is securely tightened.
-
Be prepared to disarm your vehicle’s alarm and enter your radio/source unit code.
Re-connect Negative Battery Terminal
- Re-connect the negative battery terminal making sure it is securely tightened.
Common System Setup
Setup
Open Control Panel
- To gain access to the RA 1 amplifier series top mount setting control panel carefully remove the four screws and lift the face 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
- The illustrations below describe the various controls.
- Refer to the illustration that matches your amplifier.
LEVEL Adjustment
The level control purpose is to match the output of your source signal to the
amplifier. Refer to the section C for detailed instructions.
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
The Bass EQ control will increase the power output to 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.
Level Setting
- This is a critical step to ensure 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 (counterclockwise).
-
Turn on the source unit (CD, or MP3 player). Re-confirm that the volume is turned down. Make sure the source unit controls; balance, fader, bass and treble are all set to centre 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. The 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 the distortion is heard, then back the level down (counterclockwise) 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 the 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 – the 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 re-read this document or hire a professional installer.
WARRANTY
Maxxsonics USA Inc. warrants this product, to the original consumer purchaser, to be free from defects in material and workmanship for one (1) year from the date of purchase. Maxxsonics USA Inc. will, at its discretion, repair or replace defective products during the warranty period. Components that prove to be defective in materials and workmanship under proper installation and use must be returned to the original authorized Maxxsonics USA Inc. retailer from where it was purchased. A photocopy of the original receipt must accompany the product being returned. The costs associated with removal, re-installation and freight are not the responsibility of Maxxsonics USA Inc. This warranty is limited to defective parts and specifically excludes any incidental or consequential damages connected therewith. To view the full warranty, please visit the website.
CAUTION
- This amplifier has a minimum load impedance of 1.0 Ohm.
- To ensure that your amplifier is not damaged due to improper subwoofer configurations or low-impedance situations, refer to the information below for some correct subwoofer combinations.
- Impedances lower than 1 Ohm will cause damage to the amplifier.
- Any damage that occurs due to load impedances below 1 Ohm will not be covered under warranty.
Reference RAl-710.S
700 Watt 5-Channel Amplifier
- English
- Model
- 1-Ohm
- 2-Ohm
- 4-Ohm
- Frequency Response
Signal-to-Noise Ratio
- THD%
- Variable Hi-Pass
- Variable Low-Pass
- Variable Subsonic Filter
- Bass Boost
Specifications Subject To Change Without Notice
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>