Lubell
Labs 9484 Underwater Loudspeaker
for concrete 25 yard high school & 50 meter collegiate pools
The Lubell Labs
Underwater Loudspeaker has remained the most popular underwater
speaker in the world
since 1968, as it's patented design is significantly louder and clearer
than competing designs and products. (Click HERE
for US Navy TVR plot.) 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!
Lubell 9484 underwater speaker has become a standard feature
and effective training aid in 25 yard high school and 50 meter
olympic-size swimming pools
worldwide. Swimming coaches utilize the Lubell underwater loudspeaker
to play
upbeat music and metronome beats to their swimmers, improving
their endurance while eliminating the tedium of seemingly endless laps. Swim coaches also appreciate the ability to effectively and clearly
communicate stroke and kick guidance to their swimmers via
wireless microphone. (For existing pools, swim coaches can utilize Lubell Labs' portable swimming pool sound systems including the CAWSS for synchronized swimming, and the CAWSS-APEX
for competitive swimming.) Lubell 9484 underwater loudspeakers have
also become a standard feature
in luxury hotel and resort pools worldwide for paging guests, swimming
activities, and emergency egress announcements in the event of
inclement weather.
Regarding installation, the included Pentair 78210400 (Lubell SKU A9000) stainless steel wet-niche must be installed (see guide) and encased (see diagram)
in void-free concrete at 4 to 6 foot (optimum) depth below the waterline by
a licensed pool contractor during new
concrete/gunite pool construction. (Vinyl, fiberglass,
and steel walled pools have extremely poor acoustics, and the
installation of any underwater speaker is strongly discouraged.)
Concrete must be cut back around the niche (diagram) to allow for a compacted plaster seal (hydraulic cement), and bonding is made to the Equipotential
Bonding Grid per NEC 680.26 (B) and (C) (see drawing & article/pdf) along
with all metal parts of pool structure. For home pools, one
unit is recommended for installation in each 20-foot x 20-foot
(6.1m x 6.1m) section of the pool (which can be supplimented with an AQP545 subwoofer). For deep collegiate pools,
one 9484 is recommended for each 37.5 foot x 37.5 foot (11.43 m x 11.43
m) section of the pool (subwoofer not recommended). See "installation location
diagrams" link below for recommended placement locations. Proper
placement, depth, and full void-free encasement of niche in
concrete is critical for proper sound -- please refer to diagrams
below, and call us with any questions regarding this critical element
of the design stage.
ADVANTAGES: MADE IN USA WITH PROVEN TRACK RECORD, WITH
OVER TWICE THE BANDWIDTH, LOUDNESS, AND LONGEVITY OF COMPETING DESIGNS
AND BRANDS!
INSTALLATION LOCATION DIAGRAMS:
60' home pool, 75'
& 90' pools, 50
meter olympic-size pool
INSTALLATION DEPTH: 6 foot (1.83 m) recommended; 4 foot
(1.22 m) minimum for shallow-end
OPERATING TERMPERATURE: 0°C
- 41°C (32°F - 105°F)
FREQUENCY RESPONSE: 100 Hz - 23 kHz (450 Hz - 20 kHz +/-10 dB
per US Navy tests). Click HERE for US Navy TVR plot of Lubell 9484 in
actual concrete wall!
MAXIMUM SPL: 179 dB/uPa/m
RECOMMENDED AMPLIFIERS (in stock): InterM A-120 25V
mono mixer-amplifier for up to three Lubell 9484; Russound A2100 linkable world-voltage amplifier powers two 9484's (impedance
switch in "8 ohm" position), and second A2100 amplifier powers two AQP545 subwoofers (impedance
switch in "4 ohm" position); Bosch PLE-1P240-US 25V mono power amp for up to six Lubell 9484.
AMPLIFIER REQUIREMENTS
& CONNECTION:
Constant-Voltage amp: Connect included AC205B transformer box
to 25V / COMMON speaker terminals of A-120
or PLE-1P240 amplifier,
allowing 37.5 watt load for each Lubell AC205B / LL916 connected in
parallel
Conventional Class AB amp: 78 watts @ 8 ohms (25 Vrms)
for each 9484-25V-XXX. (We can substitute the AC202B transformer box, which is rated at 50 watts @ 8 ohms (20 Vrms).
Amplifier must be UL or ETL listed, labeled for Class 2 wiring,
and connected to GFCI protected electrical outlet in dry air
conditioned equipment room.
EACH 9484-25V-XXX PACKAGE INCLUDES ONE EACH OF FOLLOWING ITEMS:
A9000 Pentair 78210400
stainless steel wet-niche (11.5 inch flange, 10 inch body diameter x
7.5 inch depth, 3/4 inch NPT conduit hub). Note: Order AT-3425-BR 3/4 inch to M25 hub
adapter for international orders
A9022 stainless steel
perforated grille, 11.125 inch diameter x 5/8 inch height
21007 speaker support, PVC
clad stainless steel
AC205B isolation &
matching transformer box,
6.1 inch x 3.75 inch x 2.375 inch. Install
in dry indoor area only - one per speaker - multiple AC205B's in
parallel & in phase - 37.5 watts consumption each on 25V line
LL916-XXX Lubell underwater speaker, 9.2 inch diameter x 5.8 inch axial length. Choice of attached cable length:
050 ft (15.24m), 100 ft (30.48m), 150 ft (45.72m), or 200 ft (60.96m). Use
shortest choice possible to reach above water level junction box, then
splice and home run.
SHIPPING / EXPORT INFO (LUBELL 9484):
9484-25V-050 (050 foot / 15.24 m attached cable): 1 @ 26 pounds / 13 in x 13 in x 22 in
(11.79 kg / 33.02 cm x 33.02 cm x 55.88 cm), Made in USA, HTS Code 8518210000, EAR99 NLR
9484-25V-100 (100 foot / 30.48 m attached cable): 1 @ 28 pounds / 13 in x 13 in x 22 in (12.70
kg / 33.02 cm x 33.02 cm x 55.88 cm), Made in USA, HTS Code 8518210000, EAR99 NLR
9484-25V-150 (150 foot / 45.72 m attached cable): 1 @ 30 pounds / 13 in x 13 in x 22 in (13.61
kg / 33.02 cm x 33.02 cm x 55.88 cm), Made in USA, HTS Code 8518210000, EAR99 NLR
9484-25V-200 (200 foot / 60.96 m attached cable): 1 @ 32 pounds / 13 in x 13 in x 22 in (13.51
kg / 33.02 cm x 33.02 cm x 55.88 cm), Made in USA, HTS Code 8518210000, EAR99 NLR
OPTIONAL SUBWOOFER, ACCESSORIES:
AQP545 Clark Subwoofer Kit for
high-end home pool use only.. use one with each Lubell 9484. Choice of 50 ft, 100 ft, 150 ft, or 200 ft tails.
A2100 Amplifier - Each
linkable world-voltage amplifier powers pair of 9484's (impedance
switch "8 ohm" position), and second A2100 amplifier powers pair of AQP545 subwoofers (impedance
switch "4 ohm" position)
AT-3425-BR
Metric Hub Adapter: Adapts A9000 wet niche's 3/4 inch NPT conduit hub
to fit overseas M25 conduit threads
DOCUMENTATION: Warranty, Niche rough-in guide / pictorial,
Installation
guide, depth
and sealing diagram, bonding
diagram, printable
brochure, safety
letter, RoHS/REACH Compliance
Declaration, CE mark,
FAQ
Official Equipment Sponsor USA Synchro
Lubell Labs Inc
712 S Yearling Road
Columbus, Ohio 43213 USA
Tel: +(614) 725-2701
email: sales@lubell.com