Lubell Labs 9484 Underwater Speaker Kit

The Lubell Labs Underwater Loudspeaker remains the most popular underwater speaker in the world since 1968, as it’s patented design is louder and clearer than competing designs and products. This unique design (U.S. Patent #3,391,385) utilizes a dual-piston PVC overmolded aluminum enclosure as the sound transducer, offering true pistonic operation and low Q in a compact corrosion-free package. Coupled with a powerful 8-cylinder piezoelectric engine (with efficiencies approaching 60%), no other brand compares!

Because of the increased interest in water aerobics, lap swimming, and synchronized swimming, built-in Lubell 9484 underwater speakers have become a standard feature in Collegiate pools around the world. Coaches appreciate the ability to 
effectively and clearly communicate instructions to their swimmers via wireless microphones from the deck. When not coaching, upbeat music with select tempos (or metronome beats) can be played for swimmers to keep pace in an enjoyable fashion.

Lubell 9484 underwater loudspeakers have also become a standard feature in luxury hotel and resort pools worldwide. Swimming laps to the sound of underwater music, books on tape, or favorite TV shows is an enjoyable way to exercise! And in the event of an emergency or inclement weather, swimmers never miss the announcement to vacate the facility.

The included SP0604C4 Hayward stainless steel wet-niche (Lubell SKU A9000) should be installed at 6 foot (1.83 m) depth below the water line by licensed pool contractor / electrician during new concrete/gunite pool construction. (Underwater speakers are not offered for vinyl and stainless steel pools due to poor sound quality.) Niche must be bonded to Equipotential Bonding Grid per NEC 680.26 (B) and (C) (see drawing & article) along with all metal parts of pool structure. For home pools, one unit is recommended for installation in each 20 foot x 20 foot (6.1 m x 6.1 m) section of the pool. For deep Collegiate pools, one unit is recommended for each 37.5 foot x 37.5 foot (11.43 m x 11.43 m) section of the pool. See “installation location diagrams” link below for recommended placement locations. Proper placement and depth is critical for proper sound — please refer to diagrams below, and call us with any questions regarding this critical element of the design stage.

  • INSTALLATION LOCATION DIAGRAMS: 60′ home pool75′ & 90′ lap pools50 meter Olympic pool
    INSTALLATION DEPTH: 6 foot (1.83 m) recommended; 4 foot (1.22m) minimum for shallow end only
    FREQUENCY RESPONSE: 100 Hz – 23kHz (450 Hz – 20 kHz +/-10 dB per US Navy tests)
    MAXIMUM SPL: 179 dB/µPa/m

    Constant-Voltage (CV) amp: Connect included AC205B transformer box to 25V speaker line, allowing 37.5 watt load for each AC205B / LL916 connected in parallel
    Conventional Class-AB amp: 78 watts @ 8 ohms (still 25 Vrms) for each 9484
    Amplifier must be UL listed, labeled for Class 2 wiring, and connected to GFCI protected electrical outlet

    ADVANTAGES: Over twice the bandwidth, loudness, and longevity of competing designs and brands!

    A9000 stainless steel wet-niche (11.5 inch flange, 10 inch body diameter x 7.5 inch depth, 3/4 inch NPT conduit hub)
    A9022 stainless steel perforated grille, 11 inch diameter x 5/8 inch height
    21007 speaker support, PVC clad stainless steel
    AC205B isolation & matching transformer box (install in dry indoor area only – one per speaker – multiple AC205B’s in parallel & in phase)
    LL916-XXX Lubell underwater speaker

    9484-25V-050 (50 foot / 15.24 m attached cable): 26 lbs / 13″ x 13″ x 22″ (11.79 kg / 33.02 cm x 33.02 cm x 55.88 cm)
    9484-25V-100 (100 foot / 30.48 m attached cable): 28 lbs / 13″ x 13″ x 22″ (12.7 kg / 33.02 cm x 33.02 cm x 55.88 cm)
    9484-25V-150 (150 foot / 45.72 m attached cable): 30 lbs / 13″ x 13″ x 22″ (13.61 kg / 33.02 cm x 33.02 cm x 55.88 cm)
    9484-25V-200 (200 foot / 60.96 m attached cable): 32 lbs / 13″ x 13″ x 22″ (13.51 kg / 33.02 cm x 33.02 cm x 55.88 cm)
    AT-3425-BR: Order for all sales outside of North America – adapts A9000 wet niche’s 3/4 inch NPT conduit hub to fit M25 conduit threads


    HARMONIZED TARIFF CODE: 8518.90.3000 (A9000 niche, A9022 grille, 21007 speaker support); 8504.31.4065 (AC205B xfmr box); 8518.29.0000 (LL916-XXX speaker)

    WARRANTY: 5 year limited

    RECOMMENDED AMPLIFIER: InterM A-120 25V mixer amplifier (for 1 – 3 Lubell 9484); Bosch PLE-1P120-US 25V power-amp (for 1 – 3 Lubell 9484); Bosch PLE-1P240-US 25V power-amp (for 4 – 6 Lubell 9484)

    DOCUMENTATION: Niche rough-in guide / pictorialInstallation guidedepth and sealing diagrambonding diagramprintable brochuresafety letterRoHS/REACH Compliance DeclarationCE markFAQ