Introducció
This manual provides detailed instructions for the installation, operation, and maintenance of your Pyramid PB3818 2-Channel Car Stereo Amplificador. Llegiu atentament aquest manual abans d'intentar la instal·lació o el funcionament per garantir un ús correcte i un rendiment òptim.
Informació de seguretat
ADVERTÈNCIA: aquest producte conté productes químics coneguts per l’Estat de Califòrnia que provoquen càncer i defectes congènits o altres danys reproductius.
Always disconnect the vehicle's battery before making any electrical connections. Ensure all wiring is properly insulated and secured to prevent short circuits and damage. Improper installation can lead to electric shock, fire, or damage to the amplifier and vehicle's electrical system. Consult a professional if you are unsure about any installation steps.
Què hi ha a la caixa
Verifiqueu que tots els components siguin presents abans de començar la instal·lació.

This image displays the Pyramid PB3818 2-Channel Car Stereo Amplifier, highlighting its inclusion in the product package.
- Pyramid PB3818 2-Channel Car Stereo Ampmés viu
- Manual d'instruccions (aquest document)
- Maquinari de muntatge (cargols, etc.)
Característiques clau
- Potència de sortida de 5000 watts: Provides up to 5000W bridgeable output for car audio systems.
- Adjustable Crossovers: Features fully adjustable electronic crossovers for multi-speaker setups.
- Augment de baix variable: Allows for customization of bass levels.
- Control de guany variable: Enables precise matching of amplifier output to head unit signal.
- Silver-Plated RCA Ports: Designed to minimize signal loss for high-quality audio.
- MOSFET Pulse Width Modulation Power Supply: Ensures a clean, distortion-free signal.
- Fully Protected Circuitry: Includes overload and short circuit protection for safety and durability.
- Slim Size Design: Compact form factor for easier installation in various vehicle spaces.
- Heavy-Duty Aluminum Alloy Heat Sink: Efficiently dissipates heat to prevent overheating.
- Indicadors LED: Power and protection LEDs provide operational status at a glance.
Controls i connexions
Controls del panell frontal

This image illustrates the various input and control options located on the front panel of the ampmés viu.
- Low Level Input (RCA): Connects to the RCA pre-out of your head unit.
- Entrada d'alt nivell: Connects to speaker-level outputs from your head unit, useful if RCA outputs are not available.
- Input Level Control (Gain): Adjusts the input sensitivity to match the output of your head unit. Start with minimum gain and increase until desired volume is achieved without distortion.
- Control d'augment dels baixos: Adjusts the level of bass enhancement.
- Crossover (Low Pass/High Pass/Full): Selects the frequency range for the ampsortida més elevada.
- LP (Pas baix): Allows only frequencies below the set point to pass, typically for subwoofers.
- HP (Pas alt): Allows only frequencies above the set point to pass, typically for full-range speakers.
- COMPLET: Permet passar tot el rang de freqüències.
- High Pass Control: Adjusts the cutoff frequency for the high-pass filter.
- Low Pass Control: Adjusts the cutoff frequency for the low-pass filter.
Connexions del panell posterior

This image details the power and speaker connection terminals on the rear panel of the ampmés viu.
- Power Supply Terminals:
- GND (terra): Connecteu-lo a una superfície metàl·lica neta i sense pintar del xassís del vehicle.
- REM (encesa remota): Connecteu-lo al cable d'encesa remota de la unitat principal.
- +12V (Alimentació): Connect directly to the positive terminal of the vehicle's battery via an in-line fuse holder.
- Fusible d'alimentació: Protegeix el amplifier from overcurrent. Use only fuses of the specified rating.
- Terminals de sortida d'altaveus: Connecteu-vos als altaveus. El amplifier supports 2-channel stereo or bridged mono operation.
Instal·lació
- Lloc de muntatge: Choose a dry, well-ventilated location that is protected from moisture and direct sunlight. Ensure adequate airflow around the amplifier for cooling. The slim design allows for flexible placement.

El amplifier's compact dimensions (13.8" x 10.24") facilitate easy installation in various vehicle locations.
- Cablejat d'alimentació:
- Run a heavy-gauge power cable (e.g., 4-gauge or larger) from the vehicle's battery to the ampTerminal de +12V del carregador. Instal·leu un portafusibles en línia a menys de 18 cm de la bateria.
- Connect a heavy-gauge ground cable of the same size from the amplifier's GND terminal to a clean, unpainted metal part of the vehicle chassis. Ensure a solid, low-resistance connection.
- Connect the remote turn-on lead from your head unit to the ampterminal REM del vitalitzador.
- Entrada de senyal:
- For head units with RCA outputs, connect RCA cables from the head unit to the amplifier's Low Level Input.
- For head units without RCA outputs, use the High Level Input. Connect speaker wires from the head unit's speaker outputs to the ampEntrada d'alt nivell del lificador.
- Cablejat dels altaveus:
- Connect your speakers to the Speaker Output Terminals. Ensure correct polarity (+ to + and - to -).
- For 2-channel stereo operation, connect one speaker to the Right output and one to the Left output.
- For bridged mono operation (e.g., for a subwoofer), consult the wiring diagram in the full manual for specific connections to achieve maximum power output.
- Comprovacions finals: Double-check all connections for proper polarity, security, and insulation before reconnecting the vehicle's battery.
Instruccions de funcionament
- Encès: Once all connections are secure and the battery is reconnected, turn on your vehicle's ignition and head unit. The amplifier's power LED should illuminate. If the protection LED illuminates, refer to the Troubleshooting section.
- Adjust Input Level (Gain):
- Estableix el amplifier's Input Level control to minimum.
- Ajusteu el volum de la unitat principal al 75% aproximadament del seu màxim.
- Augmenta lentament el amplifier's Input Level control until you hear slight distortion, then back it off slightly. This ensures the amplifier receives a strong, clean signal without clipping.
- Set Crossover:
- If using full-range speakers, set the Crossover switch to "FULL" or "HP" and adjust the High Pass Control to filter out low frequencies that speakers cannot reproduce effectively.
- If using a subwoofer, set the Crossover switch to "LP" and adjust the Low Pass Control to filter out high frequencies, allowing only bass to pass through.
- Adjust Bass Boost: Fine-tune the Bass Boost control to your preference. Use sparingly to avoid distortion and potential speaker damage.
Manteniment
- Neteja: Netegeu periòdicament el ampl'exterior del purificador amb un drap suau i sec. No utilitzeu productes químics agressius ni netejadors abrasius.
- Comprovacions de connexió: Regularly inspect all power, ground, remote, and speaker connections to ensure they remain tight and free from corrosion.
- Ventilació: Assegureu-vos que el amplifier's heat sink fins are not obstructed to allow for proper heat dissipation.
Resolució de problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense alimentació / LED d'alimentació apagat | Fusible fundit, mala connexió d'alimentació/terra, sense senyal remot. | Comproveu el fusible en línia i amplifier fuse. Verify +12V, GND, and REM connections. |
| LED de protecció encès | Short circuit in speaker wiring, amplifier overheating, impedance mismatch. | Check speaker wiring for shorts. Ensure proper ventilation. Verify speaker impedance matches ampcapacitats del lificador. |
| Sense so | No input signal, incorrect gain setting, faulty RCA cables, speaker wires disconnected. | Check RCA connections and head unit output. Adjust gain. Verify speaker connections. |
| So distorsionat | Gain set too high, improper crossover settings, poor ground connection. | Reduce gain. Adjust crossover settings. Check ground connection for tightness. |
Especificacions
- Model: PB3818
- Nombre de canals: 2
- Potència de sortida: Up to 5000 Watts (Bridgeable)
- Voltage: 24 volts (CC)
- Material: Alumini
- Dimensions de l'article (L x A x A): 16.5 x 12.5 x 4 polzades
- Pes: 4.5 quilos
- Tipus de muntatge: Muntatge en superfície
- GTIN/UPC: 068888993258
- Especificació complerta: Frequency Response, THD (<0.04%)
Garantia i Suport
The Pyramid PB3818 amplifier comes with a limited one-year warranty. For warranty claims or technical support, please refer to the contact information provided with your purchase or visit the official Pyramid weblloc.
Per obtenir recursos addicionals i informació sobre el producte, podeu visitar la Pyramid Store on Amazon.





