ACS-4090 4ch Compact Amplifier
- 4-Channel 480 Watt High Efficiency Class A/B Design
- 2-ohm Stable (4-ohm in Bridged Mode)
- PWM MOSFET Power Supply
- High Level (Speaker)/Low Level (RCA) Input
- Remote Soft Delay Turn On/Off Circuit
- Variable High/Low Pass Electronic Crossover
- Selectable 12dB Bass Boost EQ
- Variable Gain Control
- Protection Circuit: Impedance Over-load, Speaker Short, Circuit, Thermal Overheating, and DC Output.


ACS-4090 90W RMS X 4 CLASS A/B FULL RANGE COMPACT AMPLIFIER
PowerBass is pleased to introduce our newest addition to our series of Class A/B full range and Class D bass amplifiers. Borrowing from our classic ASA series, these new amplifiers offer the most desired features in the most compact chassis allowable. To accomplish this we selected SMD parts and engineered a brand new 6 oz/kg high density heat sink engineered for maximum efficiency and cooling.
The result a line-up of two, four and mono channel models that offer great performance and fantastic value. Ultra efficient, the ACS amplifiers produce plenty of low distortion high fidelity audio in a footprint small enough to fit nicely in nearly any vehicle. If you are seeking the perfect mix of performance and value look no further.
Specifications
- Selectable Subwoofer EQ: N/A
- Variable Subsonic Freq: N/A
- Inputs: RCA, 2 Pairs Input, 2 Pair Speaker Level Input
- Equalization Boost/Cut: N/A
- Power Supply: Unregulated PWM
- Height: 2.0"
- Width: 7.1"
- Depth: 12.8"
- Switchable Subwoofer EQ: N/A
- 4-ohm Mono Power: 180 watts x 2
- 4-ohm Power: 45 watts x 4
- 1-ohm Mono Power: N/A
- 2-ohm Power: 90 watts x 4
- Subwoofer EQ Frequency: N/A
- Variable Subwoofer EQ: N/A
- Low-Pass Crossover Freq: Variable 30 Hz - 250 Hz
- High-Pass Crossover Freq: Variable 50 Hz - 1 kHz
- Peak Power: 720 watts
- Crossover Slope: 12 dB
- Dimensions (in Inches): 12.8" x 7.1" x 2.0"
- Input Sensitivity: 0.25 V - 6.0 V
- S/N Ratio: >100 dB
- Total Harmonic Distortion: 0.3% @ Rated Power
- Strapped Output Power @ 2ohms: N/A
- Output Power (14.4 V) @ 4 ohm: 45 watts x 4
- Output Power (14.4 V) @ 2 ohm: 90 watts x 4
- Output Power (14.4 V) @ 1 ohm: N/A
- Channels (mono): 4
- Frequency Response: 10 Hz - 50 kHz
Downloads
ACS-4090 4ch Compact Amplifier

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- Extruded Aluminum Casing
- Built-in Rechargeable Li-ion Battery 1900mAH
- Micro USB 5V Charging
- Enhanced Ported Bass Response
- 3.5mm Aux input
- Single 10" 175 Watt RMS Amplified Downfiring Enclosure
- Computer Optimized 10" Thin Subwoofer Enclosure
- Custom Injected Molded Cone
- Large Roll Rubber Surround
- 2" Vented KSV Voice Coil Former
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- High Level (Speaker)/Low Level RCA input
- Soft Delay Turn On/Off Circuit
- Auto Turn-on (high level input only)
- Variable Low Pass Electronic Crossover 50Hz - 200Hz
- Variable 12db Bass Boost EQ @ 45Hz
- Variable Gain Control
- Protection Circuit: Impedance Over-load, Speaker Short Circuit, Thermal Overheating, and DC Output
- Wired Remote Gain Control Included
- Down Firing Air Suspension Enclosure
- Heavy-Duty Reinforced Box Design
- Mounting Hardware Included
- 4-Band Dual Zone Active Equalizer Bass, Mid-Bass, Mid, High
- 3 Zone Volume Control and Output
- Variable Master Volume Control
- Front Panel Selectable Inputs - Bluetooth, Aux, RCA
- Front Panel Tri Illumination Selector - Red, Blue, Green
- Front Panel Track Selector - Track Up / Down
- 6V RMS output
- Bi-Polar PWM Power Supply
- Frequency Response: 20Hz-40KHz
- Selectable 120/80Hz Subwoofer Crossover
- Conformal Coated PCB
IN STOCK NOW!
- 12 Speaker 500 watt Amplified Bluetooth Powersports Soundbar
- IPX6 Rated
- 6 x 3.5" Square Poly Cone Woofers
- 2 x 3” Full Range Marine Grade Poly Cone Speakers
- 4 x 1” SD Mylar Tweeters
- Heavy Duty Extruded Aluminum Water Tight Housing
- LED back-lit Control Panel
- LED Visual Notifications
- Audible Power On/Off Notifications
- Built In DSP Processor w/Distortion Limiter
- Bluetooth and Wired Inputs
- 2 Volt Line Output
- Auto Turn On/Off Circuit
- Waterproof Wire Loom Connectors
- Universal L-Bracket Mounting System Included
- Universal Top or Bottom Mount Clamp Style Brackets (Sold Separately XL-SBCLAMP, XL-SBTCLAMP, XL-SBSCLAMP)
- Secondary Dash Mountable Controller Pad (Sold Separately XL-SBCON)
- CRS 4.0 Bluetooth Protocol
- >30' Bluetooth Range
- RCA Audio Output
- Power, Track Up/Down & Volume Up/Down
- USB 5V Charging Port
- 12V Remote Amplifier Turn On/Off Lead
- Detente buttons for easy use with gloves
- Water resistant cables and connectors
- Surface or Flush Mount
- 800 Watt High Efficiency Class D Design
- 1-OHM Stable Mono Block Amplifier
- Ultra Low Current Draw
- Double Sided Copper Plated PCB
- PWM MOSFET Power Supply
- Digital Sound Optimization Circuitry
- High Damping Control Circuit
- Variable Subsonic Filter
- High Current Voltage Ripple Rejection Circuitry
- Balanced RCA Inputs
- Auto Turn On/Off
- Remote Soft Delay Turn On/Off Circuit
- 40 Click Variable Low Pass Electronic Crossover
- 40 Click Variable Frequency/18dB Bass Boost EQ
- Variable Gain Control
- Wired Secondary Remote Gain Control Included
- Protection Circuit: Impedance Over-load, Speaker Short, Circuit, Thermal Overheating, and DC Output
- Strapable Dual Amp Power Doubling Circuit (Amp-to-Amp Bridged at 2 ohm minimum)
