Wet Sounds Sinister-SDX4 Sinister Series 4-Channel 340W RMS x 4 at 2 Ohms, Class-D Marine Amplifier
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What's Inside?
- • Sinister Series 4-Channel Class-D Marine Amplifier
- • 4-Channel marine amplifier
- • (4) 30A ATO fuses (installed)
- • Remote Level Control module
- • 20' Flat cable (RJ25 modular plugs on each end)
- • Owner's Manual
Why Choose Wet Sounds Sinister-SDX4 4-Channel Amplifier?
Class D Power Supplies combined with MAXED™ Power supply
The MAXED power supply is a Patented technology designed to provide high efficiency levels never thought to be achievable in a mobile audio amplifier. It has less current draw, less strain on the electrical system, and less generated heat. Sinister amplifiers use superior performance circuitry by utilizing Wet Sounds exclusive class-D power supplies combined with Wet Sounds MAXED™ technology.
Share One Size Full Cast Aluminum Chassis
All this results in more play time! The Sinister amplifiers share one size full cast aluminum chassis for all models, making installation a breeze and the ability to have a clean install. Sinister Series amps are on a whole new level above substandard car amps. These high-end marine amplifiers are designed to give you plenty of power while standing up to the harshest marine environment.
Frequently Asked Questions (FAQ)
- • Why does the amplifier go into protection mode?
Protection can be triggered by low or high voltage, speaker shorts, DC output, or excessive temperature. Check wiring and electrical connections first.
- • What should I check if it suddenly shuts off?
Check battery voltage, ground connections, fuse condition, remote turn-on wiring, and whether the amplifier is overheating under heavy use.
- • Why does the fuse keep blowing?
Repeated fuse failures usually indicate a short, incorrect wiring, damaged speaker connections, or excessive current draw. Inspect the system before replacing fuses.
- • How can I stop the speakers from distorting?
Lower the gain and bass boost, verify the crossover settings, and make sure the speakers are receiving an appropriate amount of power.
- • Can I bridge two channels to power a subwoofer?
Yes. Two channels can be bridged at 4 ohms to provide substantially more power for a compatible subwoofer.
- • Why is there no sound even though the amplifier has power?
Check RCA connections, input-source selection, speaker wiring, gain settings, crossover controls, and the source unit's output.
- • What causes the amplifier to run hot?
Restricted airflow, low speaker impedance, high volume levels, or prolonged heavy loads can increase temperature and activate thermal protection.
- • How should the crossover be set for full-range speakers?
Use Full Range for speakers that should receive the complete signal, or High Pass to reduce low frequencies and improve performance.
- • Why does one channel have little or no output?
Check the RCA input, speaker terminals, gain settings, polarity, and channel configuration. A loose connection can affect only one channel.
- • Can bass boost cause problems with full-range speakers?
Yes. Excessive bass boost can increase distortion and speaker stress. It should be used sparingly and primarily for suitable subwoofer applications.
- Number of Channels : 4
- Frequency Response : 8-50000 Hz
- Amplifier Class : D
Features:
- High-Power 4-Channel Marine Amplifier: Delivers 185W RMS × 4 at 4Ω, 340W RMS × 4 at 2Ω, or 685W × 2 RMS when bridged at 4Ω.
- Marine-Ready Construction: Fully conformal-coated 4-layer PCB, sealed salt-water-resistant heatsink, and stainless hardware for corrosion protection.
- MAXED Class-D Technology: Wet Sounds’ patented design provides high efficiency and low current draw without sacrificing output.
- Advanced Microprocessor Control: Ensures reliable operation and built-in protection monitoring.
- Variable Crossovers: Independent high-pass and low-pass filters (30–290 Hz, 12 dB/octave) for precise system tuning.
- Adjustable Bass Boost: 0–15 dB boost at 30–130 Hz on Channels 1–2 for enhanced low-end response.
- Stereo / Mono Switching: Independent stereo or mono operation on both channel pairs; supports bridged configurations.
- Remote Level Control Included: Dash-mount volume controller with 20-foot cable adjusts overall amplifier output.
- Selectable LED Logo: 3-color LED badge (red, white, blue) with diagnostic flash codes for protection status.
- Flexible Inputs & Outputs: RCA preamp inputs, pass-through preamp outputs for additional amps.
- Built for Marine Environments: Cast-aluminum chassis and conformal coating ensure durability in saltwater conditions.
Specifications:
Power Output (CTA-2006 / 14.4V, 1% THD):
- 185W × 4 @ 4Ω
- 340W × 4 @ 2Ω
- 685W × 2 @ 4Ω (Bridged)
Minimum Impedance:
- 2Ω stereo
- 4Ω bridged
- Frequency Response: 8 Hz – 35 kHz (-3 dB)
- Signal-to-Noise Ratio: >90 dB
- Input Sensitivity: 0.2V – 6.1V
Crossover:
- High-Pass: 30–290 Hz / 12 dB per octave
- Low-Pass: 30–290 Hz / 12 dB per octave
Bass Boost:
- 0–15 dB @ 30–130 Hz (CH 1–2 only)
- Inputs: RCA preamp inputs
- Outputs: RCA pass-through outputs
- Remote Level Control: Included (20 ft cable)
- Recommended Power/Ground Wire: 4-gauge
- Fuse Rating: 4 × 30A (120A total)
Dimensions:
- Width: 14-1/4"
- Height: 3-5/16"
- Depth: 10-1/4"
Marine Protection:
- Conformal-coated PCB
- Saltwater-resistant heatsink
- Stainless hardware
- UPC: 814820024623
- Weight: 14
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
