Introducció
This manual provides detailed instructions for the installation, operation, and maintenance of the Soundstream MPQ-6BX 1/2 DIN 5-Band Car Audio Equalizer with Digital Bass Reconstruction. Please read this manual thoroughly before using the product to ensure proper function and to prevent damage.
Informació de seguretat
- Font d'alimentació: Ensure the unit is connected to a 12V DC negative ground power supply.
- Cablejat: All wiring should be performed with the vehicle's ignition turned off to prevent electrical shorts.
- Muntatge: Mount the unit securely to prevent movement during vehicle operation. Avoid mounting in locations exposed to direct sunlight, excessive heat, or moisture.
- Ventilació: Assegureu-vos que hi hagi una ventilació adequada al voltant de la unitat per evitar el sobreescalfament.
- Instal·lació professional: If you are unsure about any installation steps, consult a qualified car audio professional.
Producte acabatview
The Soundstream MPQ-6BX is a compact 1/2 DIN 5-band equalizer designed to enhance your car audio system. It features digital bass reconstruction, a selectable subsonic filter, and flexible input/output options for comprehensive sound control.
Característiques principals:
- 5-Band Equalization: Provides ±18 dB adjustment at 50 Hz, 200 Hz, 1 kHz, 5 kHz, and 20 kHz for precise frequency tuning.
- Digital Bass Reconstruction: Restores low frequencies often lost during audio compression, enhancing bass impact.
- Filtre subsònic: Selectable 35–80Hz filter protects subwoofers from unwanted ultra-low frequencies.
- Entrades versàtils: Includes AUX, low-level RCA, and high-level speaker inputs for compatibility with various head units.
- High Output Preampmés viu: Delivers 7V RMS / 12V peak preamplifier outputs with ultra-low 0.01% Total Harmonic Distortion (THD) and a 110 dB Signal-to-Noise Ratio (SNR).
- Disseny compacte: 1/2 DIN size (7" W x 5.1" D x 1.2" H) for easy installation in tight spaces.

Figura 1: Angle view of the Soundstream MPQ-6BX equalizer.
Configuració i instal·lació
Proper installation is crucial for optimal performance. Refer to the wiring diagram and follow these steps carefully.
Contingut del paquet:

Figure 2: Included components: MPQ-6BX equalizer, remote knob, and installation accessories.
- Soundstream MPQ-6BX Equalizer
- Control remot de baix
- Installation Accessories (wiring harness, mounting hardware)
- Manual d'usuari
Muntatge:
- Choose a suitable location in your vehicle, such as a 1/2 DIN dash opening or under the dashboard, ensuring it is away from heat sources and moisture.
- Ensure there is enough space for wiring connections and ventilation.
- Fixeu la unitat amb els accessoris de muntatge proporcionats.
Connexions de cablejat:

Figure 3: Rear panel connections for power, inputs, and outputs.
- Connexió d'alimentació:
- Connecteu el +12V wire to a constant 12V power source (e.g., battery positive terminal) with an inline fuse.
- Connecteu el GND wire to a clean chassis ground point.
- Connecteu el REM (Remote) wire to the remote turn-on output of your head unit.
- Connexions d'entrada:
- Entrada AUX: For external audio devices via RCA.
- Entrada RCA de baix nivell: Connecteu-lo a la sortida de pre-RCA de la unitat principal.
- High-Level Speaker Input: Use for head units without RCA outputs. Connect directly to speaker wires.
- Connexions de sortida:
- Connecteu el FRONT, DARRERA, i SUB sortides RCA a les entrades corresponents del vostre ampaixecadors.
Instruccions de funcionament
Familiarize yourself with the controls to optimize your audio experience.

Figure 4: Front panel controls of the MPQ-6BX equalizer.
Controls del panell frontal:
- Volum mestre: Adjusts the overall output level of the equalizer.
- Selecció d'entrada: Switches between CD (Low-Level RCA/High-Level) and AUX inputs.
- Fader (F/R): Balances the audio output between front and rear channels.
- Level (Digital Bass Processor): Adjusts the intensity of the digital bass reconstruction.
- Subsonic (35Hz/80Hz): Selects the cutoff frequency for the subsonic filter.
- EQ Bands (50Hz, 200Hz, 1kHz, 5kHz, 20kHz): Adjusts the gain (±18dB) for each frequency band.
Rear Panel Settings:

Figura 5: superior view showing input level, ground isolation, and output voltage interruptors.
- Input Level (90Hz/150Hz/200Hz): Adjusts the input sensitivity for the digital bass processor. Experiment to find the best setting for your source.
- Ground Isolation (200Ω/GND/ISO): Helps eliminate ground loop noise. Try different settings if you experience hum or hiss.
- Vol. De sortidatage (5V/7.5V/10V): Estableix el volum màxim de sortidatage del preamplifier. Match this to the input sensitivity of your ampaixecadors.
Manteniment
The Soundstream MPQ-6BX is designed for reliable operation with minimal maintenance.
- Neteja: Feu servir un drap suau i sec per netejar la unitat. No utilitzeu productes de neteja abrasius ni dissolvents.
- Connexions: Reviseu periòdicament totes les connexions del cablejat per assegurar-vos que estiguin ben fixades i que no presentin corrosió.
- Medi ambient: Ensure the unit remains in a well-ventilated area, free from excessive heat, dust, and moisture.
Resolució de problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Blown fuse, incorrect wiring, loose power connection. | Check inline fuse, verify +12V, GND, and REM connections. Ensure connections are secure. |
| Sense sortida d'àudio | Incorrect input selection, loose RCA connections, amplifier not powered. | Verify Input Select switch position. Check all RCA connections. Ensure ampEls carregadors estan encesos. |
| So distorsionat | Input level too high, output voltage mismatch, EQ settings too extreme. | Reduce head unit volume. Adjust Input Level and Output Voltage switches. Reset EQ bands to flat and adjust gradually. |
| Engine noise/hum | Ground loop, poor ground connection. | Ensure a clean, secure ground connection. Experiment with the Ground Isolation switch (200Ω/GND/ISO). |
| Baix feble | Digital Bass Processor level too low, Subsonic filter set too high, EQ bass band reduced. | Increase Digital Bass Processor Level. Adjust Subsonic filter to a lower frequency or off. Increase 50Hz EQ band. |
Especificacions
| Número de model | MPQ-6BX |
| Bandes d'equalitzador | 5 (50Hz, 200Hz, 1kHz, 5kHz, 20kHz) |
| EQ Adjustment Range | ±18 dB |
| Filtre subsònic | Selectable 35Hz - 80Hz |
| Vol. De sortida màxtage | 7V RMS / 12V Peak |
| Distorsió harmònica total (THD) | 0.01% |
| Relació senyal/soroll (SNR) | 110 dB |
| Impedància d'entrada | 20 kΩ (AUX/Low-Level), 60 Ω (High-Level) |
| Impedància de sortida | 150 Ω |
| Resposta de freqüència | 20 Hz - 20 kHz |
| Font d'alimentació | 12V DC Negative Ground, PWM Switched |
| Consum actual | 250 mA |
| Dimensions (L x P x A) | 7" x 5.1" x 1.2" (17.78 cm x 12.95 cm x 3.05 cm) |
| Pes | 1.7 lliures (0.77 kg) |
Garantia i Suport
Per obtenir informació sobre la garantia i assistència tècnica, consulteu la targeta de garantia inclosa amb el producte o visiteu el lloc web oficial de Soundstream. weblloc web. Conserveu el rebut de compra com a comprovant de compra per a reclamacions de garantia.
Soundstream Oficial Weblloc: www.soundstream.com