PowerBass Single 8 Inch Amplified Under Seat Subwoofer - STA8

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PowerBass STA-8 8" Amplified Bass Enclosure

  • Single 8" 150 Watt RMS Amplified Under Seat Subwoofer Enclosure
  • Extruded Aluminum  Enclosure with Dynamic Damping
  • 8" Injection Molded PP Cone Woofer
  • 1.5" KSV Voice Coil Former
  • 1-Channel 150 Watt High Efficiency Class A/B Design
  • 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
  • Variable 12dB Bass Boost EQ @ 45 Hz
  • Variable Gain Control
  • Protection Circuit: Impedance Over-load, Speaker Short, Circuit, Thermal Overheating, and DC Output
  • Variable Wired Remote Gain Control Included
  • Mounting Hardware Included
  • 9.75"W x 2.75"H x 13.5"D


The STA-8 features a Class A/B mono amplifier perfectly matched to power the 8-inch woofer in its vented enclosure design. We developed a compact trapezoid shaped enclosure, perfectly tuned to get the most out of the proprietary 8-inch subwoofer. The geometric design maximizes transient response, reducing the negative effects that a small enclosure can have on the subwoofer by dispersing and dissipating standing waves away from the subwoofer and result is cleaner, deeper bass in less space.

Supplied with “plug in" connectors for speaker and power installation is simple and straightforward. The addition of dual mounting straps means the BTA-8 can easily be taken out of vehicle when extra space is needed. Also since no holes need to be cut the BTA-8 is a perfect choice for leased vehicles that could use a little extra bass.

STA-8 Amplified Sub Enclosure:

Aluminum Enclosure with a lighted logo badge all CAD (Computer Aided Design) for maximum output in small spaces

8-inch Polypropylene Woofer with 40 oz ferrite magnet and pole venting

150 watts RMS Mono Amplifier (300 watts Peak Music Power) featuring variable Gain, Low Pass and Bass EQ

High / Low Input Compatible with OEM or aftermarket radios

Variable Remote Gain Control (Included)

Selectable Subwoofer EQ: 0dB - 12 dB @ 45 Hz
Inputs: Low Level (RCA)/High Level (speaker level)
Equalization Boost/Cut: 0dB - 12 dB
Subwoofer Frequency Range: 20 Hz - 200 Hz
Power Supply: Unregulated PWM
Height: 2.75"
Width: 9.75"
Depth: 13.5"
Material: Extruded Aluminum
2-ohm Power: 150 watts RMS/300 watts max
Subwoofer EQ Frequency: 45 Hz
Variable Subwoofer EQ: 0dB - 12 dB
Low-Pass Crossover Freq: 40 Hz - 200 Hz
Dimensions (in Inches): 2.75" x 9.75" x 13.5"
Input Sensitivity: 250 mV - 6V (low level)/1.0V - 10 V
S/N Ratio: >85 dB
Total Harmonic Distortion: 0.5% at Rated Power
Output Power (14.4 V) @ 2 ohm: 150 watts RMS/300 watts max
Channels (mono): 1
Frequency Response: 20 Hz - 250 Hz

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