Lubell LL9816 Underwater Speaker

The LL9816 is an economical yet powerful piezoelectric underwater speaker developed, patented, and manufactured by Lubell Labs of Columbus Ohio. The LL9816 (and it's caged LL916 counterpart) continue to set the world record for having the widest frequency response and highest output level of any commercial underwater speaker made, at a price that is reasonable and affordable. Because of its rugged construction and epoxy finish, the LL9816 may be used in test tanks, swimming pools, rivers, lakes, and oceans. The LL9816 is provided with choice of audio isolation transformer box with cord (see below), allowing phone jack connection to popular commercial sound amplifiers of various power & impedance ratings.

Type: Piezoelectric drive dual piston
Frequency Response: 200Hz - 20kHz
Outlet Level: 180dB/uPa/m @ 1kHz
Maximum Cable Voltage/Current: 20 Vrms 3A (100% duty cycle)
Operating Depth: 6' recommended, 50' maximum
Finish: 10-mil ASA61 gray epoxy over MIL-C-5541 Class 1-A substrate
Cable: 25' 18/3 PVC jacketed (custom lengths available @ $0.90/ft beyond 25' standard)
Cable Termination: 3-pin proprietary (Conxall 3182-3PG-524) mates with transformer box
Weight: 12 lbs in air, 2 lbs in water
Size: 9.0" diameter x 6.0" axial length
Included Transformer Box (click HERE for description): AC102 (50 watt 32 ohm 40 Vrms); AC201 (50 watt 2 ohm 10 Vrms); AC202 (50 watt 8 ohm 20 Vrms); AC203E (80 watts 8 ohms 25 Vrms; w/8 ohm air output & attenuator); AC205C (38 watt 16 ohm 25 Vrms); AC211 (200 watts 10.7 ohm 40 Vrms; w/8 ohm air output & attenuator). Includes 2' speaker cord for connection to 0.250" phone jack output on accessory amplifier.
PDF Documents: Data plot, general guide, printable brochure
Limited Warranty: 2 years
Retail Price: $1205 (LL9816 and choice of AC102, AC201, AC202, or AC205); $1281 (LL9816 and choice of AC203E or AC211)
School, dealer, quantity, and cash discounts available