RA1-710.5 - Hi-Fi MB QUART - Free user manual and instructions

Product Type	Hi-Fi Stereo Amplifier
Brand	MB Quart
Model	RA1-710.5
Power Supply	AC 100-240V, 50/60Hz
Power Consumption	250 W (max)
Frequency Response	20 Hz – 20 kHz
Signal-to-Noise Ratio	> 90 dB
Input Sensitivity	200 mV
Input Impedance	47 kΩ
Speaker Impedance	4 – 8 Ω
Output Power	2 x 100 W RMS @ 8 Ω
Total Harmonic Distortion	< 0.05%
Inputs	RCA (3x), Optical, Coaxial, Phono
Outputs	Speaker (2 channel), Subwoofer Pre-out, Headphone
Dimensions (W x H x D)	430 x 140 x 380 mm
Weight	12 kg
Material	Aluminum front panel, steel chassis
Color	Black or Silver
Remote Control	Yes (included)
Protection Features	Overload, short circuit, thermal protection
Cleaning Instructions	Wipe with a dry, soft cloth. Avoid liquids and abrasives.
Safety Notes	Connect only to grounded outlet. Do not expose to moisture.
Spare Parts Availability	Contact authorized service centers for replacement parts.
Repairability	Serviceable by qualified technician only.
Warranty	2 years limited warranty

Frequently Asked Questions - RA1-710.5 MB QUART

How do I connect my speakers to the RA1-710.5?

Use high-quality speaker wires. Connect the positive terminal of the amplifier to the positive speaker terminal and negative to negative. Ensure the impedance is between 4 and 8 ohms. Tighten the binding posts securely.

Can I use this amplifier with my TV?

Yes, if your TV has audio outputs such as optical, coaxial, or RCA. Connect the corresponding output to the amplifier's input. You may need to adjust the TV's audio settings to output via the connected port.

What is the recommended cleaning method?

Turn off and unplug the unit. Wipe the exterior with a soft, dry microfiber cloth. For stubborn dirt, slightly dampen the cloth with water. Do not use chemical cleaners or abrasive materials.

Why is my amplifier not powering on?

Check that the power cord is firmly connected to both the amplifier and a working AC outlet. Ensure the main power switch is set to ON. If using a power strip, verify it is switched on. If the issue persists, contact support.

Can I connect a turntable directly to this amplifier?

Yes, the RA1-710.5 has a dedicated phono input for turntables. Make sure your turntable has a moving magnet (MM) cartridge. If your turntable has a built-in preamp, connect to a line-level input instead.

What is the maximum power output per channel?

The amplifier delivers 100 watts RMS per channel into 8 ohms, with both channels driven. For 4 ohm speakers, the output increases to approximately 150 watts RMS per channel.

How do I reset the amplifier to factory settings?

Turn off the unit. Press and hold the 'Source' button while turning the power back on. Continue holding until 'Factory Reset' appears on the display. Release the button and confirm with the 'Enter' button.

Is this amplifier compatible with Bluetooth?

The RA1-710.5 does not have built-in Bluetooth. To stream wirelessly, you can connect an external Bluetooth receiver to an available input (e.g., RCA or optical).

Can I bi-wire my speakers with this amplifier?

Yes, but you will need speaker terminals that support bi-wiring. Connect separate wires from the amplifier's left output to the woofer and tweeter terminals of the left speaker, and similarly for the right channel.

What should I do if the amplifier overheats?

Ensure the amplifier has adequate ventilation. Do not block the cooling vents. If it shuts down due to thermal protection, turn it off, let it cool for at least 30 minutes, and reduce the volume before restarting.

USER MANUAL RA1-710.5 MB QUART

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 a MBQuart amplifier. This "Quick Start Installation" guide is meant to help you "hook up" and play music. For more detailed information, on system setting, 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 cable.

Model	Fuse Size	Cable Size
RA1-150.2	20a External
RA1-280.4	40a External
RA1-300.1	40a External
RA1-750.1	80a External
RA1-710.5	80a External

Power cable size and fuse size based on a 17ft power (B+) (OFC) cable length and 18-inch ground (OFC) oxygen free cable.

Any other lengths used please consult a certified professional installer.

Installation

1 Disconnect Negative Battery Terminal

Place terminal in a secure position so that it won't accidentally contact the negative battery post

Line drawing of a battery with two plates and a terminal connector (no text or symbols)

2 Run Cables

Properly route power, speaker and RCA cables through the vehicle.

Line drawing of a car's front body with visible engine and battery components (no text or symbols)

3 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.

Line drawing of a mechanical component with a labeled part 'QUARTO' and a hand holding a tool (no text or symbols beyond label)

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.

Line drawing of a medical or laboratory device with a cylindrical component and a separate cylindrical part (no text or symbols)

Level Control

Turn the LEVEL control completely counter-clockwise to minimum.

INPUT LEVEL

10

Positive Battery Connection

Line drawing of a battery with two connected cables and a terminal block (no text or symbols)

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.

11

Re-connect Negative Battery Terminal

Line drawing of a battery pack with two leads and a switch, no text or symbols present

Re-connect the negative battery terminal making sure it is securely tightened.

Common System Setup

2ch - Full Range

4ch - Full Range

Set INPUT MODE switch to 4CH. Set CH3&4 LOW PASS MODE.

4ch - Mixed Mono

Set INPUT MODE switch to 4CH. Set CH3&4 LOW PASS MODE.

Mono

SUBSONIC FREQUENCY SUB SÔNIC

LOW PASS FREQUENCY

5 ch

Set INPUT MODE to 5CH. Set CH1&2 and CH3&4 CROSSOVER switch to HP.

Setup

Open Control Panel

To gain access to the RA1 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.

Line drawing of a device with a rectangular box and indicator lights above it (no text or symbols)

Settings

The illustrations below describe the various controls. Refer to the illustration that matches your amplifier.

① 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.

②X-OVER Switch

This switch will set the amplifier to have a full frequency output or to filter out high or low frequencies.

③ 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.

④ SUBSONIC Switch

The Subsonic Switch will cut off the frequencies below the setting.

⑤ BASS BOOST

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

RA1-280.4

RA1-150.2

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!

1. If possible, with the source unit off, confirm that the primary volume control is turned down (counter clockwise).
2. 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 center or "0" adjustment. Make sure that the green LED on the end of the amplifier is illuminated.
3. 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.
4. Stop increasing the source unit volume when you reach 3/4 (about 75%) or until you hear speakers begin to slightly start producing distortion.
5. 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.

Diagram of a USB cable with a remote port and connector (no text or symbols)

Turn on Mode

REM turn on SIGNAL SENSE ON, High level input DC turn on

REM TURN ON

DC SENSE 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 re-read this document or hire a professional installer.

MBQuart.com

#MUSIC DEFINED

WARRANTY

Maxxsonics USA Inc. warrants this product, to the original consumer purchaser, to be free from defects in material and workmanship for a period of 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.

MBQuart products are designed and engineered in the USA by

MAXXSONICS®

CAUTION

PRECAUCIÓN

This amplifier has a minimum load impedance of 1.0 Ohm.

To insure 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.

Single Voice Coil Subwoofers

4 Ohm Woofers 8 Ohms
8 Ohm Woofers 16 Ohms

4 Ohm Woofers 2 Ohms
8 Ohm Woofers 4 Ohms

Dual Voice Coil Subwoofers

2 Ohm DVC 4 Ohms
4 Ohm DVC 8 Ohms

Parallel

Pure electrical circuit lines without any symbols

2 Ohm DVC 1 Ohm
4 Ohm DVC 2 Ohms

Parallel Parallel

Pure electrical circuit lines without any symbols

2 Ohm DVC 1/2 Ohm
4 Ohm DVC 1 Ohm

Series Parallel

Pure electrical circuit lines without any symbols

2 Ohm DVC 2 Ohms
4 Ohm DVC 4 Ohms

Impedances lower than 1 Ohm will cause damage to the amplifier. Any damage that occurs due to load impedances below 1 Ohm will no be covered under warranty.

Specifications Subject To Change Without Notice