Soundstream Reserve Series Class D Car Audio Amplifiers
Soundstream Reserve Series amplifiers offer an innovative approach to traditional sound processing. The DPA amps feature a digital signal processing integrated circuit module for precise tuning of crossovers and gain settings. All functions are controlled by top surface-mounted keys and a knob turn. Selected crossover frequencies and gain levels are displayed on an adjacent LCD, showing operating voltage and temperature while idle. Full-featured pre-amp options, including band-pass and subsonic crossovers, bass boost, and variable phasing, make DPA amps a preferred choice for enthusiasts.
Product Models
- DPA4.1600D
- DPA1.2000D
- DPA5.2000D
Technical Features
Soundstream Digital Pre-Amp amplifiers offer an innovative approach to traditional sound processing. DPA amps include a digital signal processing integrated circuit module that allows for precise tuning of crossovers and gain settings. All functions are controlled by top surface-mounted keys, requiring only a finger press and knob turn. Selected crossover frequencies and gain levels are displayed on an adjacent LCD, showing operating voltage and temperature while idle. Full-featured pre-amp options, including band-pass and subsonic crossovers, bass boost, and even variable phasing, make DPA amps a go-to for any enthusiast.
Remote Subwoofer Level Control
This input allows for a remote control of the subwoofer output from your dashboard. It also helps adapt the amplifier to various signal sources with different levels. A level control is provided on the amplifier next to the phone jacks, but it should not be used as a primary volume control. Start with a "12 o'clock" setting. If the head unit volume is at 75% of maximum, a good sound without distortion should be achieved. Find the level setting where distortion is just discernible, then slightly reduce the control.
How to Install
The dash control mounts with two screws to the underside of the dashboard. Slide under the dash, place the dash control in its mounting position, mark the two mounting holes, drill pilot holes, and secure with two screws.
Wiring and Connections
Power
These amplifiers are designed for 10 to 16.8 volt DC range. Check the vehicle's electrical system voltage with a voltmeter before connecting wires. Ensure the battery voltage is at least 12V with the ignition OFF. If not, have the system checked by an auto electrician. Use the largest gauge cable possible. We recommend using the Power Cable Selection Chart to determine the correct power wire size.
Wire the amplifier directly to the vehicle battery using the appropriate cable size. Run the power cable away from engine components and heater cores. An inline fuse or circuit breaker is mandatory to prevent fire risk from short circuits. Install the fuse holder or circuit breaker close to the positive (+) battery terminal (within 18 inches). The fuse or circuit breaker rating should not exceed the sum of the fuses on the amplifier chassis. Connect the cable to the battery, but leave the fuse out or circuit breaker "off" until all other connections are made.
Ground
Locate a clean metal area near the amplifier for a good ground connection (preferably the floor pan). Ensure the area is free from electrical wires, vacuum lines, or brake/fuel lines. Use a wire brush or sandpaper to remove paint for better contact. Secure the ground cable to the body with a bolt, star washer, and nut. Apply silicone over the screw and bare metal to prevent rust and water leaks.
Cut both power and ground cables to length. Strip 1/2 inch (12mm) of insulation. Insert the ground cable first into the terminal block on the amplifier's side panel, ensuring it is firmly seated. Then, insert the +12V cable into the +BATT terminal. Tighten the screws securely.
Remote Wire
Connect the thin remote wire from the head unit's remote cable (often used for automatic power antennas) to the REM terminal on the amplifier. High-quality cables may require a separate wire.
NOTE: If connecting multiple amplifiers, the current load might be too high for some head units. Check the head unit manual. A relay may be needed for higher current loads. Consult your local dealer if unsure about relay connections.
Speaker Connection
Use high-quality speaker cables. Connect the speaker positive (+) terminal (marked with + or a red dot) to the amplifier's positive (+) terminal, and the speaker negative (-) to the amplifier's negative (-) terminal.
When connecting cables, strip only 10 mm of insulation. Twist the wire strands together and insert into the terminal after loosening the screw. Do not overtighten, as this can cut the cable strands. Use cable protection tubes or similar to prevent damage to the cable insulation from sharp metal edges. Damaged cable insulation may void the warranty.
Speaker Polarity Check
All speakers in a car audio system should be connected in phase (same polarity). All speaker cones must move in the same direction. Out-of-phase speakers can result in a lack of bass and a poor stereo soundstage.
Models: SOUNDSTREAM, Class D, Car Audio Amplifier
