The
Infinity Primus 90041A (item model number
INFPRIMUS90041AAM) is a
high-performance Class D 4-channel car audio Compact amplifier. It is engineered to pack clean, efficient power into a compact footprint, making it easy to mount in tight vehicle spaces like under seats or behind panels.
Technical Specifications
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RMS Power Handling:
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90 Watts x 4 channels @ 4-Ohms
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130 Watts x 4 channels @ 2-Ohms
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260 Watts x 2 channels bridged @ 4-Ohms
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Peak Power Output: 1,480 Watts
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Frequency Response: 20 Hz – 20,000 Hz
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Signal-to-Noise Ratio: 75 dB
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Total Harmonic Distortion (THD): 1%
Key Features
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Class D Amp Technology: Highly efficient architecture that runs much cooler than traditional circuitry while drawing less power from your car's electrical system. [1]
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Start/Stop Engine Compatibility: Seamlessly maintains consistent, uninterrupted audio performance when integrated with vehicles utilizing automated engine start/stop systems.
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OEM Load Detect System: Ensures complete compatibility with restrictive factory head units that require specific resistance to unlock sound, eliminating the need for extra installation hardware.
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On-Board Protection Circuitry: Guarded against short circuits, extreme temperatures, overvoltage, and undervoltage to protect your hardware investment.
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Precise Crossover Tuning: Features switchable high-pass (HPF) and low-pass (LPF) filters ranging from 32 to 320 Hz with a sharp 12 dB/octave slope for tailored separation.
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Adjustable Bass EQ: Provides a variable bass boost from 0 to 12 dB centered at 45Hz to maximize your loudspeakers' or subwoofer's low-end performance. [1]
- Flexible Input Range: Accommodates low-level RCA inputs (200mV to 5V) and speaker-level inputs (1V to 25V) to connect to virtually any factory or aftermarket radio setup.
Core Build & Materials
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Color: Matte black chassis with dark gray brushed accents and copper badge highlights
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Material: Extruded aluminum heatsink core with high-impact ABS endcaps
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Heatsink Type: High-efficiency top-and-side dissipation fins
Audio & System Architecture
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Audio Component Form Factor: Compact multi-channel mobile chassis
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Audio Output Channels: 4 channels (bridgeable to 3 or 2 channels)
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Audio Purpose: Multi-speaker high-fidelity power distribution or subwoofer driver amplification
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Circuit Design / Topology: Class D (Switching amplifier topology)
Connectivity & Installation
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Compatible Devices: Coaxial speakers, component speaker networks, subwoofers, and standard car stereo systems
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Connectivity Technology: Hardwired screw-down and plug-in modular interfaces
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Device Interface:
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2 pairs of low-level differential-balanced RCA inputs
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Line-level speaker adapter wiring harnesses (included)
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Set-screw power, ground, and remote turn-on terminals
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Mounting Type: Flat surface mount (under seat, trunk floor, or custom amp rack)
Power & Control Features
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Power Source: 12V DC vehicle electrical system (requires direct wiring to the car battery)
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Speaker Enclosure Compatibility: Infinite baffle, sealed, or ported speaker configurations (operates at 4-ohm or 2-ohm stable loads)
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Amplifier Control Features:
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Dual variable electronic crossovers (HPF/Full/LPF)
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Crossover adjustment range: 32Hz to 320Hz (12dB/octave slope)
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Variable Bass EQ adjustment (0 to +12dB centered at 45Hz)
- Independent front and rear gain/sensitivity dials