Introducció
Welcome to the Mitzu MIT-75AZ 2-Channel Audio Amplifier user manual. This guide provides essential information for the proper installation, operation, and maintenance of your amplifier. Please read this manual thoroughly before use to ensure optimal performance and safety.
Informació important de seguretat
- Always disconnect the vehicle's battery before installing or servicing any electrical equipment.
- Assegureu-vos que tot el cablejat estigui correctament aïllat per evitar curtcircuits.
- Muntar el ampl'extintor de forma segura en un lloc que permeti una ventilació adequada i que estigui protegit de la humitat i de la calor excessiva.
- No opereu el amplifier if it is damaged or malfunctioning. Refer servicing to qualified personnel.
- Use appropriate gauge wiring for power and speaker connections to prevent overheating and ensure stable performance.
Contingut del paquet
Verifiqueu que tots els elements siguin presents al paquet:
- Mitzu MIT-75AZ 2-Channel Audio Ampmés viu
- Power/Speaker Wiring Harness
- RCA Input Harness (if applicable)
- Maquinari de muntatge (cargols)
- Manual d'usuari (aquest document)
Producte acabatview
The Mitzu MIT-75AZ is a compact 2-channel audio amplifier designed for car, motorcycle, or ATV audio systems. It features both high-level and low-level inputs for versatile connectivity.
Front Panel (Power and Speaker Connections)

Imatge 1: Davant view of the Mitzu MIT-75AZ amplifier, showing the power input terminals (B+, R, B-) and speaker output terminals (L+, L-, R+, R-).
Rear Panel (Input and Controls)

Imatge 2: posterior view of the Mitzu MIT-75AZ amplifier, displaying the High Input connector, Low Input (RCA) jacks, Level control knob, and Filter switch (Low Pass/Full).
Components clau:
- Power Terminals (B+, R, B-): Connect to battery positive, remote turn-on, and battery negative/ground respectively.
- Speaker Terminals (L+, L-, R+, R-): Connect to left and right speakers.
- Entrada alta: For connecting to head units without RCA outputs.
- Low Input (RCA): For connecting to head units with RCA pre-outs.
- Control de nivell: Ajusta la sensibilitat d'entrada del ampmés viu.
- Filter Switch: Selects between Full Range and Low Pass filter modes.
Instal·lació i Configuració
1. Muntatge del Ampmés viu
Choose a secure, dry location with adequate ventilation. Avoid mounting near heat sources or in direct sunlight. Use the provided mounting hardware to secure the ampmés viu.
2. Connexions de cablejat
Ensure the vehicle's battery is disconnected before making any wiring connections.
Connexions d'alimentació:
- B+ (Positive): Connect to the vehicle's positive battery terminal via a fuse (not included, recommended 15A-20A).
- B- (Ground): Connect to a clean, unpainted metal surface on the vehicle chassis. Ensure a good electrical connection.
- R (Remote Turn-On): Connect to the remote output of your head unit. This wire turns the ampencén i apaga l'activador amb el teu estèreo.
Connexions d'entrada d'àudio:
Choose either High Input or Low Input, but not both simultaneously.
- Entrada alta: If your head unit does not have RCA outputs, connect the speaker outputs of your head unit to the High Input connector using the provided harness.
- Low Input (RCA): If your head unit has RCA pre-outs, connect RCA cables from the head unit to the amplifier's Low Input jacks.
Connexions d'altaveus:
- Connecteu els vostres altaveus al amplifier's speaker terminals (L+, L-, R+, R-). Ensure correct polarity (+ to + and - to -).
- El amplifier supports a minimum speaker impedance of 4 ohms per channel.
Instruccions de funcionament
Engegada inicial:
- After all connections are made and verified, reconnect the vehicle's battery.
- Engegueu la unitat principal. El amplifier should power on, indicated by the "POWER" LED.
Ajust de la configuració:
- Control de nivell: Start with the Level control at its minimum setting. Play a familiar audio track at a moderate volume from your head unit. Slowly increase the amplifier's Level control until you hear distortion, then back it off slightly. This sets the input sensitivity.
- Filter Switch:
- COMPLET: For full-range speakers (e.g., coaxial speakers).
- PAS BAIX: For subwoofers. This setting filters out high frequencies, allowing only low frequencies to pass through.
Manteniment
- Mantenir el ampMantingueu el lificador net i lliure de pols i restes. Feu servir un drap suau i sec per netejar-lo.
- Assegureu-vos que hi hagi un flux d'aire adequat al voltant de amplificador per evitar el sobreescalfament.
- Comproveu periòdicament totes les connexions del cablejat per verificar si estan ben ajustades i si hi ha corrosió.
Resolució de problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense energia / Sense so | Fusible cremat | Check and replace the fuse on the power line. |
| Sense energia / Sense so | Connexió d'alimentació o de terra fluixa | Verify all power (B+, B-, R) and ground connections are secure. |
| Sense energia / Sense so | El cable d'encesa remota no està connectat o està defectuós | Ensure the remote wire is connected to the head unit's remote output and is receiving 12V when the head unit is on. |
| So distorsionat | Level control set too high | Reduir el ampControl de nivell del lificador. |
| So distorsionat | Speaker wires shorted or incorrect impedance | Check speaker wiring for shorts and ensure speakers meet the amplifier's impedance requirements (4 ohms minimum). |
| No Sound from one channel | Faulty RCA cable or speaker wire | Check RCA and speaker connections for the affected channel. |
| Amplificador Es sobreescalfa | Ventilació insuficient | Reubicar el amplifier to a better-ventilated area or clear obstructions. |
| Amplificador Es sobreescalfa | Impedància de l'altaveu massa baixa | Ensure speakers meet the minimum impedance requirement. |
Especificacions
- Model: MIT-75AZ
- Canals: 2
- Potència de sortida màxima: 500 watts (pic)
- Voltage: 16 Volts (Operating Range)
- Dimensions de l'article (L x A x A): 2.76 x 7.87 x 6.89 polzades
- Pes de l'article: 12 unces
- Tipus de muntatge: Muntatge del cotxe
- Tipus d'entrada: Alt nivell, baix nivell (RCA)
- Filtre: Full / Low Pass
Garantia i Suport
For warranty information or technical support, please refer to the retailer where the product was purchased or visit the Mitzu official website (if available). Keep your proof of purchase for warranty claims.





