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INTRODUCTION Dear Customer, Congratulations on your purchase of the world’s finest brand of car audio equipment. At MB Quart, we are pleased you chose our product. Through years of engineering expertise, hand craftsmanship and critical testing procedures, we have created a wide range of products that reproduce music with all the clarity and richness you deserve. For maximum performance we recommend you have your new MB Quart product installed by an Authorized MB Quart Dealer.
GETTING STARTED Welcome to MB Quart! This manual is designed to provide information for the owner, salesperson and installer. For those of you who want quick information on how to install this product, please turn to the Installation Section of this manual. Other information can be located by using the Table of Contents. We, at MB Quart, have worked very hard to make sure all the information in this manual is current.
DESIGN FEATURES Controls 1. Gain Adjuster – These can be adjusted to match output levels from a variety of source units individually for the left and right inputs. 2. Crossover Multiplier Range Switch – Used to set the multiplier for the left and right crossover frequencies between x1 and x10. A setting of x1 leaves the adjustable crossover frequency from 50-500Hz. A setting of x10 changes the adjustable crossover frequency to 500-5KHz (5000Hz) 3.
DESIGN FEATURES Connections Left Side Right Side 1. RCA Line Output Jacks – These outputs provide a convenient source for daisy-chaining an additional amplifier without running an extra set of RCA cables from the front of the vehicle. These are pass-thru only and are not effected by crossover or gain adjustments. 2. RCA Input Jacks – The industry standard RCA jacks provide an easy connection for line level input. They are plated to resist the signal degradation caused by corrosion. 3.
INSTALLATION CAUTION: If you feel unsure about installing this system yourself, have it installed by a authorized MB Quart Dealer. CAUTION: Before installation, disconnect the battery negative (-) terminal to prevent damage to the unit, fire and/or possible injury. Before beginning any installation, follow these simple rules: 1. Be sure to carefully read and understand the instructions before attempting to install the unit. 2.
INSTALLATION WIRING THE SYSTEM CAUTION: If you do not feel comfortable with wiring your new unit, please see your local authorized MB Quart Dealer for installation. CAUTION: Before installation, disconnect the battery negative (-) terminal to prevent damage to the unit, fire and/or possible injury. CAUTION: Avoid running power wires near the low level input cables, antenna, power leads, sensitive equipment or harnesses.
INSTALLATION 8. Securely mount the amplifier to the vehicle or amp rack. Be careful not to mount the amplifier on cardboard or plastic panels. Doing so may enable the screws to pull out from the panel due to road vibration or sudden vehicle stops. 9. Connect source signal by plugging the RCA cables into the input jacks at the amplifier. CAUTION: Always ensure power is off or disconnected at the amplifier before connecting RCA cables.
INSTALLATION OPERATION SET-UP FEATURES The MB Quart R Series amplifier offers a wide range of selections for the user to create a listening environment that meets your personal preference. Before making final adjustments, read through the descriptions for each feature to get the best results. ADJUSTMENTS Loosen the allen screw holding the small cover in place over the controls. Tilt the cover up and away from the amplifier.
OPERATION CROSSOVER Filter Switch Placing the switch in the ON position (In Position) sets the amplifier to the All Pass mode, preventing any crossover adjustment, allowing all frequencies to pass. Adjustments made to the Multiplier switch or Frequency Adjuster are bypassed. Frequency Switch Placing the switch in the HPF position (In Position) sets the amplifier to the High Pass mode, enabling frequencies above the cut-off point to pass.
TROUBLESHOOTING Amplifier Does Not Turn On Possible Cause Solution The in-line fuse on battery positive cable is blown. Check in-line fuse on battery positive cable. Replace if necessary. Poor ground connection Verify that Ground connection is connected to clean metal on the vehicle’s chassis. Repair/replace if necessary. Poor power connection or power outside acceptable range. Verify there is 10.5 - 15.5 Volts present at the positive battery and remote turn-on cable.
TROUBLESHOOTING PROT (Protect) LED Comes On, Amplifier shuts down Possible Cause Solution There is a short in the system Turn the system off. Check connection to all components for possible shorts. Check all wires and cables for kinks, splices, poor insulation, etc. Repair/replace if necessary. Amplifier has exceeded normal operating temperature due to improper ventilation. Turn the system off and allow to cool. Verify adequate ventilation around amplifier.
LIMITED WARRANTY INFORMATION MB Quart Corporation offers a limited warranty on MB Quart products on the following terms: Length of Warranty R Series Amplifiers – 1 Year Or, two (2) years warranty if installed by a Authorized MB Quart Dealer. Requires proof of purchase. What is Covered This warranty applies only to MB Quart products sold to consumers by Authorized MB Quart Dealers in the United States of America or its possessions.
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