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Grund Audio STP-122 12" Full Range Speaker

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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; black metal corners; and complex second or third-order, optimized crossover networks for matched transition between drivers, with full protection circuitry. All models carry a five year limited warranty.


The Grund Audio Design STP-122 may be pole-mounted for use as a small, full-range, portable PA system or installed PA. A subwoofer may be added for additional low-end support.This model is ideal where vocal articulation is important. It is also well-suited for instrument reproduction, main PA, or side-fill applications. Use the STP-122 for DJs, live bands, clubs, house of worship, corporate A/V, and educational facilities.


  • Power Handling: 300 Watts
  • Frequency Response: 55 Hz - 16k Hz
  • Sensitivity (1W @ 1M): 98 dB SPL
  • Nominal Impedance: 8 ohms
  • Dispersion: Horizontal 70 degrees, Vertical 40 degrees
  • Components: LF: 12" Cone, HF: 1" Compression Driver
  • Crossover Frequency: 2k Hz
  • Enclosure Type: Trapezoidal 8.5 degrees
  • Grille: Powder-Coated, Perforated Steel
  • Connectors: Two 1/4" & Two - NL4 Speakon
  • Dimensions: H - 24.50" W - 15.25" D - 15.25"
  • Weight: 42.0 Lbs