This document is an owner's manual for Sundown Audio high-performance car amplifiers, covering both monoblock and multi-channel models.
Function Description:
Sundown Audio amplifiers are designed to enhance car audio systems by providing powerful and clear amplification. The manual details the features and specifications for various models, including monoblock amplifiers (SALT-4, SALT-6, SALT-8, SALT-12) and multi-channel amplifiers (SALT-200.2, SALT-400.2, SALT-200.4, SALT-300.4, SALT-500.4). These amplifiers are built with digital Class-D technology, ensuring high efficiency and robust performance. They incorporate multiple protection circuits to safeguard against thermal overload, voltage fluctuations, speaker shorts, and DC offset, ensuring longevity and reliable operation.
Important Technical Specifications:
Digital Monoblock Amplifiers (SALT-4, SALT-6, SALT-8, SALT-12):
- Design: Digital Class-D Linkable Mono Block Amplifier.
- Power Supply: Dual MOS-FET PWM Power Supply.
- Load Stability: 1 Ohm Stable Load.
- Filters: 24 dB/Octave Variable Low Pass Filter (35 Hz - 250 Hz), 24 dB/Octave Variable Subsonic Filter (10 Hz - 50 Hz).
- Bass Boost: 0-9 dB (45Hz).
- Phase Shift: 0-180 Degree Variable Phase Shift.
- Input Sensitivity: 6 - 0.2 Volts (+/- 5%).
- Frequency Response: 10 Hz - 250 Hz (+/- 1dB).
- Signal-to-Noise Ratio: 90 dB.
- Damping Factor: > 400.
- Working Voltage: 9 - 15.5 Volts.
- Total Harmonic Distortion (T.H.D) at 4ohms: < 0.1%.
- Efficiency at 4ohms: > 90%.
- Protection: 4 Way Protection Circuit (Thermal, Voltage, Speaker short, DC Offset).
- Remote Control: Wired Remote Control with Voltage & Temperature display and Clipping Indicator.
Rated Power Output (Tested Voltage 14.4Volts):
- SALT-4:
- RMS Power - 2ohms Linked: 8000W
- RMS Power - 1ohm Mono: 4000W
- RMS Power - 2ohm Mono: 2000W
- RMS Power - 4ohm Mono: 1000W
- Recommended Fuse Rating: 400A
- Unit Length (Inches): 22.05* (8.67 W x 2.80 H)
- SALT-6:
- RMS Power - 2ohms Linked: 12000W
- RMS Power - 1ohm Mono: 6000W
- RMS Power - 2ohm Mono: 3000W
- RMS Power - 4ohm Mono: 1500W
- Recommended Fuse Rating: 600A
- Unit Length (Inches): 26.78 (10.08 W x 2.96 H)
- SALT-8:
- RMS Power - 2ohms Linked: 16000W
- RMS Power - 1ohm Mono: 8000W
- RMS Power - 2ohm Mono: 4000W
- RMS Power - 4ohm Mono: 2000W
- Recommended Fuse Rating: 800A
- Unit Length (Inches): 30.71 (10.08 W x 2.96 H)
- SALT-12:
- RMS Power - 1ohm Mono: 12000W
- RMS Power - 2ohm Mono: 6000W
- RMS Power - 4ohm Mono: 3000W
- Recommended Fuse Rating: 2000A
- Unit Length (Inches): 37.80 (10.08 W x 2.96 H)
Full Range Digital Amplifiers (SALT-200.2, SALT-400.2, SALT-200.4, SALT-300.4, SALT-500.4):
- Design: Full Range Digital Amplifiers, High Efficiency Digital Multi-Channel Design.
- Load Stability: 2ohm Stereo / 4ohm Bridged.
- Filters: 12 dB/Octave Variable Subsonic Filter (10 Hz - 500 Hz), 12 dB/Octave Variable High Pass Filter (50 (500) Hz - 500 Hz (5 KHz)), 12 dB/Octave Variable Low Pass Filter (50 (500) Hz - 500 Hz (5 KHz)).
- Crossover Multipliers: X1 / X10.
- Input Sensitivity: 6 - 0.2 Volts (+/- 5%).
- Frequency Response: 10 Hz - 25 KHz (+/- 1dB).
- Signal-to-Noise Ratio: 105 dB.
- Total Harmonic Distortion (T.H.D) at 4ohms: < 0.1%.
- Efficiency at 4ohms: > 75%.
- Protection: 4 Way Protection Circuit (Thermal, Voltage, Speaker short, DC Offset).
- Remote Control: Optional Wired Remote Control with Voltage & Temperature display and Clipping Indicator.
Rated Power Output (Tested Voltage 14.4Volts):
- SALT-200.2:
- RMS Power - 4ohm Mono: 700W x 2
- RMS Power - 2ohm Stereo: 325W x 2
- RMS Power - 4ohm Stereo: 200W x 2
- Recommended Fuse Rating: 60A
- Unit Length (Inches): 7.88* (6.85 W x 2.66 H)
- SALT-400.2:
- RMS Power - 4ohm Mono: 1300W x 1
- RMS Power - 2ohm Stereo: 650W x 2
- RMS Power - 4ohm Stereo: 400W x 2
- Recommended Fuse Rating: 100A
- Unit Length (Inches): 11.82* (8.67 W x 2.80 H)
- SALT-200.4:
- RMS Power - 4ohm Mono: 700W x 2
- RMS Power - 2ohm Stereo: 325W x 4
- RMS Power - 4ohm Stereo: 200W x 4
- Recommended Fuse Rating: 120A
- Unit Length (Inches): 11.82* (8.67 W x 2.80 H)
- SALT-300.4:
- RMS Power - 4ohm Mono: 1000W x 2
- RMS Power - 2ohm Stereo: 500W x 4
- RMS Power - 4ohm Stereo: 300W x 4
- Recommended Fuse Rating: 150A
- Unit Length (Inches): 13.39 (8.67 W x 2.80 H)
- SALT-500.4:
- RMS Power - 4ohm Mono: 1400W x 2
- RMS Power - 2ohm Stereo: 700W x 4
- RMS Power - 4ohm Stereo: 500W x 4
- Recommended Fuse Rating: 300A
- Unit Length (Inches): 14.96 (8.67 W x 2.80 H)
Usage Features:
- Power Connections: Detailed instructions for connecting the +12V battery, ground, and remote turn-on wires. Emphasizes the importance of proper fusing (within 12 to 16 inches of the battery) and secure, clean ground connections.
- Input Connections: Diagrams show how to connect the head unit to the amplifier's input terminals.
- Speaker Connections: Various wiring diagrams illustrate different speaker configurations for monoblock and multi-channel amplifiers, including 8-2ohms, 8-1ohms, 8-4ohms, 2-channel, 3-channel, 4-channel, and 5-channel modes.
- Dual Amp Input Connection (Master & Slave): Provides clear instructions and diagrams for linking two monoblock amplifiers in a master-slave configuration using RCA cables. This setup allows the master amplifier to control the slave amplifier, transferring the fully adjusted signal.
- Remote Control: Amplifiers feature a wired remote control (optional for full-range models) that displays voltage, temperature, and a clipping indicator, allowing for real-time monitoring and adjustment.
- Adjustable Filters and Boosts: Users can fine-tune audio output with variable low pass, subsonic, and high pass filters, as well as a variable bass boost and phase shift control.
- Protection System: The multi-layer protection system automatically shuts off the amplifier and illuminates a red protection indicator light in case of excessive heat, short-circuited speakers, overload, or voltage fluctuations outside the working range.
Maintenance Features:
- Troubleshooting Guide: A comprehensive section dedicated to troubleshooting common issues such as the amplifier not turning on, no output, going into protection mode, or producing distorted/attenuated/noise sound.
- Fuse Checks: Advises checking fuses not just visually but with a continuity meter, and ensuring 13+ volts are present.
- Wiring Integrity: Recommends checking all wiring for proper connections, shorts, and open coils, including speaker wires, RCA cables, and power/ground/remote connections.
- Impedance Verification: Guides users to verify that the speaker load impedance is within the amplifier's minimum working impedance (e.g., 1 ohm for monoblocks, 2ohm stereo/4ohm bridged for multi-channels) to prevent damage.
- Input Signal Check: Instructions to measure input signal voltage from the source unit using an AC voltmeter (0.2 to 6.0 volts from RCA cables).
- Cooling and Ventilation: If the amplifier overheats, it suggests allowing it to cool down for 30 minutes and ensuring it has adequate ventilation, free from obstructions.
- Component Inspection: Advises checking amplifier controls for errors, input level, or crossover settings, and trying different cables or signal sources if necessary.
- Reverse Polarity Check: Recommends checking speaker wiring for reverse polarity.
The manual emphasizes that all features are subject to change as part of a continuous effort to improve the products.
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