Lubell Labs caged Underwater Speaker

Portable Underwater Speaker

The Lubell Labs LL916C and LL916H portable underwater speakers are the gold standard in full-range, high-output underwater audio. Engineered by Lubell Labs in Columbus, Ohio, USA, these pistonic piezoelectric underwater loudspeakers deliver exceptional clarity, wide frequency response, and industry-leading sound projection—ideal for synchronized swimming, lap training, diver recall, and open-water applications.

With no risk of electrocution, thanks to a maximum underwater cable voltage of just 20V, these speakers provide safe, reliable operation for pools, lakes, rivers, and ocean environments.

No other brand compares!

The LL916C is a cage-mounted underwater speaker, which allows placement on bottom of swimming pools or lakes, or mounting to piers in the lake or ocean. The cage also provides added protection to the sensitive internal electronics against breakage due to accidental drops. The LL916C is available with choice of 25' (7.62m), 50' (15.24m), 100' (30.48m), 150' (45.72m), or 200' (60.96m) cable lengths;

The LL916C includes a transferable 5 year limited warranty.
The warranty does not cover failure of cable due to abuse, so please handle carefully and follow instructions

Because the Lubell LL916C and LL916H underwater speakers have special safety requirements and present a capacitive load, they are always sold/used with Lubell Labs AC series transformer boxes.

These custom transformer boxes incorporate a tuned RLC circuit with isolated winding transformer and 50 watt series resistor in order to provide broadband performance, impedance matching, current limiting, and electrical isolation for safety. Some of the more popular boxes are the AC202C for use with the Chiayo Stageman (CAWSS) system for synchronized swimming.

Also available is the AC102C and AC211C (same with air speaker jack and control) for connection to amplifiers up to 200 watts @ 8 ohms. Always match the wattage rating of the Lubell transformer box with the speaker output wattage rating of the amplifier that it will be used with.