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Grund Audio STP-151S Single 15" Passive Subwoofer

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The Grund Audio Design ST Pro Series products are designed with the aid of the most advanced technologies in the audio field. Sophisticated design and measurement equipment, including computer assisted design software, is used for each design to achieve optimized balance and interface between components to give better quality, performance, and longer life.

The STP Series are built with high-quality materials including: multi-layer void-free plywood construction; T-baffle bracing; epoxy powder coated, steel perforated grilles; durable, soil-resistant black carpet covering; and black metal corners. All models carry a five year limited warranty.


The STP-151S is a single 15 inch subwoofer that adds low frequency band-width with smooth, low distortion response down to 40Hz. A top-mounted pole-mount is supplied. The STP-151S provides excellent sub base for clubs, DJ, and live applications.


  • Power Handling: 400 Watts
  • Frequency Response: 40 Hz - 2000 Hz
  • Sensitivity (1W @ 1M): 97 dB SPL
  • Nominal Impedance: 8 ohms
  • Dispersion: Omni-Directional
  • Components: LF: 15" Cone
  • Crossover Frequency: 80-160k Hz
  • Enclosure Type: Trapezoidal 8.5 degrees
  • Grille: Powder-Coated, Perforated Steel
  • Connectors: Two 1/4" & Two - NL4 Speakon
  • Dimensions: H - 30.00" W - 18.75" D - 18.50"
  • Weight: 54.0 Lbs