Lubell Labs now has a woofer for sale. It is the VC2C and has been under development for several years. It adds a new dimension to underwater sound for bodies of water having 10' minimum depth. (The VC2C must be used at 10' depth to prevent damage.) It is literally sound that you can feel! Because of limited quantities, initial sales will be limited to marine scientists, ocean engineers, the military, and to laboratories in the United States. Specifications are:
  • Description: Axial symmetric double piston radiator with spring copper diaphragms and external stops
  • Frequency Range: 50 Hz to 1.5 kHz
  • Resonant Frequency: 115 Hz +/- 5 Hz
  • Impedance: Varies with frequency (4 ohms minimum @ 50 Hz; 17 ohms @ 1500 Hz)
  • Maximum Output Level: 174dB/uPa/m
  • Maximum Voltage/Current: 20 Vrms/2.5A (100% duty-cycle)
  • Q Parameters: Qtco~2.5  Qmc~5
  • Directivity: Omnidirectional to 1.5 kHz
  • Cable: Teledyne Marine LPIL-3-FS on 50 feet of 16/3 SO
  • Operating Depth: 10 feet (3.05 meters) minimum, 50 feet (15.24 meters) maximum
  • Maximum Air Pressure: 23 psi (WARNING: use provided hand air pump only!)
  • Piston Stop Gap: 0.016 inches (Schrader valve pin depressed to equalize internal/external pressure)
  • Dimensions: 8"D x 9.75"L
  • Weight: 21 lbs
  • PDF Documents: Operation manual. Plots: SPL, TVR, broadband Z, and narrow band Z (resonant frequency range)
  • Price: $5999 (includes 50' cable, hand pump, digital pressure gauge, and carry case)
Output level can be increased by using arrays of two and four units. Has been calibrated at Dodge Pond.

Lubell Labs Inc
712 S Yearling Road
Columbus, Ohio 43213 USA
Tel: +(614) 725-2701