CAUTION

DO NOT BLOCK VENTS OR RADIATOR PANELS. Blocking them may cause heat to build up inside and may result in fire.

ATTENTION

NE PAS OBSTRUER LES SORTIES DAIR NI LES PANNEAUX DU RADIATEUR. Une surchauffe interne peut se produire et provoquer un incendie.

PRUDENCIA

NO BLOQUEE LOS ORIFICIOS DE VENTILACION O LOS PANELES DEL RADIADOR. Si los bloquea el calor se acumular en el interior y podra producirse un incendio. UTILICE LOS ACCESORIOS ESPECIFICADOS E INSTALELOS CORRECTAMENTE. La utilizacin de otras piezas no designadas puede provocar daos en el interior del aparato o puede hacer que la instalacin no se efecte correctamente, ya que las piezas flojas pueden ser peligrosas. NO INSTALE EN LUGARES MUY HUMEDOS O LLENOS DE POLVO. Un alto grado de humedad o polvo dentro del aparato podr ocasionar la aparicin de humo o un incendio.
USE SPECIFIED ACCESSORY PARTS AND INSTALL THEM SECURELY. Use of other than designated parts may damage this unit internally or may not securely install the unit in place as parts that come loose may create hazards.
UTILISER LES ACCESSOIRES SPECIFIES ET LES INSTALLER CORRECTEMENT. Lutilisation dautres pices non dsignes risque de provoquer des dommages lintrieur de lappareil ou son installation risque de ne pas tre faite correctement, et les pices desserres peuvent provoquer des dangers. NE PAS INSTALLER DANS DES ENDROITS TRES HUMIDES OU POUSSIEREUX. Une humidit ou poussire importante pntrant dans lappareil peut tre lorigine dun dgagement de fume ou dun incendie.
DO NOT INSTALL IN LOCATIONS WITH HIGH MOISTURE OR DUST. A high incidence of moisture or dust that penetrates into this unit may cause smoke or fire.
TECHNICAL DESIGN FEATURES
Class-T Amplification Unlike regular Class D amplifiers, the MRD-F752 uses adaptive switching technology. Switching frequency is determined by digital analysis of the incoming audio waveform, combined with predictive processing algorithms. This allows the Class-T amp to reduce the ground bounce and crossover distortion common to switching transistors. This gives MRD-F752 the efficiency of a switching amplifier, but, with the sound quality of a pure Class-A analog amp. The result is the best of both worlds.

Built in Crossover In any multi amp, or multi speaker audio system, there will need to be a divider established between sets of speakers to separate them from one another, this is the function of a crossover. Crossovers are used to take out the high frequencies on subwoofers (Low Pass), or remove the bass from mid-high speakers (High-Pass). In a system that consists of a subwoofer and some mid/ high speakers, there will be overlapping frequencies that both sets of speakers will be playing together. By using a crossover to remove these overlapping frequencies from each speaker, the amplifier becomes more efficient, the entire system becomes more linear and there is less strain on smaller speakers.
Check the Bass EQ Most users will be listening to their systems while actually driving. A moving vehicle means a cockpit bombarded with road noise. High levels of road noise mean masked bass frequencies (weak bass). A bass EQ is a simple way to boost low-frequency response curves to overcome these bass-killing factors and ensure that bass is clear and powerful.
Utilisation de lEQ (galiseur) de basses La plupart des utilisateurs utilisent leur appareil pendant quils conduisent. Un vhicule en dplacement signifie un habitacle bombard par les bruits de la route. Et un grand volume de bruits de route masque les basses frquences (basses faibles). Un EQ de basses est un moyen simple daugmenter les courbes de frquence des basses pour surmonter ces facteurs de perte et tre sr dobtenir des basses claires et puissantes.
Temperature Control with a Powerful Fan In the MRD-F752, heat radiation is carried out forcibly with a powerful fan to prevent deterioration of sound quality. The fan rotates in connection with the Remote Turn-On lead.
Contrle de la temprature avec un ventilateur puissant A lintrieur du MRD-F752, la radiation thermique est expuls de force avec un ventilateur puissant afin dempcher la dtrioration sonore. Ce ventilateur tourne en connexion avec le conducteur de mise en tension tlcommande.
BRIDGED CH-1 CH-2 80A BATTERY REMOTE GND

POWER SUPPLY

Air ventilation holes/ Orifices de ventilation/ Orificios de ventilacin
Caution: Do not close the air ventilation hole. If closed, heat is accumulated inside and it may cause fire hazard.
Prcaution: Ne pas fermer lorifice de ventilation. Si vous le fermez, la chaleur saccumulera lintrieur et un incendie risque de se produire.
Precaucin: No cierre el orificio de ventilacin. Si lo hiciera, el calor se acumulara en el interior y podra ocasionar un incendio.

INSTALLATION

Due to the high power output of the MRD-F752, considerable heat is produced when the amplifier is in operation. For this reason, the amplifier should be mounted in a location which will allow for free circulation of air, such as inside the trunk. For alternate installation locations, please contact your authorized Alpine dealer. 1. Using the amplifier as a template, mark the four screw locations. 2. Make sure there are no objects behind the surface that may become damaged during drilling. 3. Drill the screw holes. 4. Position the MRD-F752 over the screw holes, and secure with four self-tapping screws.

Bass EQ Adjustment Knob (Frequency) Permits adjustement of the bass frequencies between 30 and 120 Hz.
Status Indicators Amplifier status can be confirmed with the indicator. PROTECTION indicator Green Red q q O q: On Normal (amplifier circuit) Amplifier circuit abnormal RCA ground floated

O : Blinking

MUSIC indicator Green Amber q O q O q: On No music input Music input Muted status Heavy current flowing in amplifier
Indicateur de musique (MUSIC) Vert Ambre q O q O q: Allum Pas dentre de musique Entre de musique Etat de sourdine Courant de haute intensit circulant dans lamplificateur O : Clignotant
Indicador de msica (MUSIC) Verde Ambar q O q O q: Encendido Sin entrada de msica Entrada de msica Estado de sordina Circulacin de corriente fuerte en el amplificador O : Parpadeante
POWER indicator Green Red q q O q: On Normal (battery) Fuse blown, poor battery connection, etc. Poor battery voltage (less than 10V)
Indicateur dalimentation (POWER) Vert Rouge q q O q: Allum Normal (batterie) Fusible brl, connexion pauvre de la batterie, etc. Faible tension de la batterie (infrieure 10V) O : Clignotant
Indicador de alimentacin (POWER) Verde Rojo q q O q: Encendido Normal (batera) Fusible quemado, conexin pobre de la batera, etc. Tensin pobre de la batera (menos de 10V) O : Parpadeante
In case of no sound: If an heavy current flows into the amplifier circuit, the protection circuit works and status indicators will show as listed in the table below. To resume, turn off the power of the head unit, etc., and then turn on the power again after 3 seconds. If the status does not still recover, check wirings of the speakers, and if abnormality is not found, please consult with the Alpine dealer.
Sil ny a pas de son: Si un courant trs fort circule dans lamplificateur, le circuit de protection fonctionne et ltat des indicateurs changera comme montr la table ci-dessous. Pour revenir ltat normal, teindre lunit principale etc., et puis lallumer nouveau aprs 3 secondes. Si ltat ne change pas, vrifier le cblage des hautparleurs, et sil ny a pas danomalie, contacter le revendeur Alpine.