Lubell 9484 User guide

IMPORTANT: THIS GUIDE SUPPLIMENTS HAYWARD NICHE MANUAL AND BOSCH AMPLIFIER MANUAL
I. DESCRIPTION: The Lubell 9484 is a professional 37.5 watt 25V in-wall underwater speaker kit intended for
contractor installation at 4’ (1.22 m) to 6’ (1.83 meter) depth during new concrete or gunite pool construction
utilizing standard or saltwater chlorination systems. DO NOT INSTALL in vinyl liner pools or concrete pools
having vinyl liner due to poor acoustics.
Per page 4 pictorial, the 9484 includes: A9000 (Hayward SP0604C4) stainless steel wet niche with 3/4” bronze
conduit hub, A9002A stainless steel grille, LL916 underwater speaker, 21007 PVC/stainless steel speaker support,
AC205B 25V audio transformer/resistor box). The LL916 speaker is fitted with choice of 50', 100', 150', or 200'
3-conductor cable that runs through conduit to above ground J-box. (Extra cable can be coiled inside the niche for
future on-deck inspections.)
II. LOCATING THE SPEAKERS
Install one 9484 kit for each 20 foot x 20 foot (6.1 m x 6.1 m) section of pool. See last paragraph of online brochure
http://www.lubell.com/9484.html for location diagrams of typical pools. Use two 9484 kits for 20' x 40' pools and
locate 10' from each end either in common wall or catty-corner in long axis walls at 5'-6’ depth. Use three units for
20' x 60' pool and locate one unit 10' from each end at 5'-6’ depth in common 60' wall; Locate third unit in center of
opposite wall at 5'-6’ depth. For 25 yard Olympic pool, locate two units in each 25 yard wall (4 total) 18.75' from
each end at 6' depth. For 50 meter Olympic pool, locate four units in each 50m wall (8 total) at 6' depth at following
distance from ends: 6.25m, 18.75m, 31.25m, 43.75m. Installation at 5’-6’ depth is recommended, but units in shallow
end may be reduced to 4’ depth with some loss of low frequency response and reduced sound level. Install in flat
section of wall only, as grille must mount flush. For large municipal pools, the speakers should be located around the
periphery of the pool for proper sound distribution.
III. INSTALLING THE A9000/2 NICHE/GRILLE (LICENSED POOL CONTRACTOR/ELECTRICIAN ONLY)
WARNING - EXTERNAL BONDING LUG ON ALL SPEAKER NICHES, LUMINARY NICHES, AND
POOL FIXTURES MUST BE BONDED TO AN EQUIPOTENTIAL BONDING GRID WITH A SOLID
COPPER CONDUCTOR NOT SMALLER THAN 8 AWG PER NATIONAL ELECTRIC CODE
SECTION 680. FAILURE TO FOLLOW THIS CRITICAL PROCEDURE CAN RESULT IN ELECTRICAL SHOCK
AND ELECTROLYSIS DAMAGE TO FIXTURES. FOLLOW ALL INSTRUCTIONS INCLUDED WITH WET-NICHE.
1) Rough in each A9000 wet-niche (Hayward SP0604C4) at 6’ depth in positions recommended above in
COVERAGE section, bonding external lug to equipotential bonding grid per NEC 680.26(B)(1). Run conduit to
nearby above water J-box,; Run conduit from J-box to air conditioned equipment room. WARNING: GROUNDING
LUG INSIDE UNDERWATER SPEAKER NICHE MUST BE GROUNDED AND POTTED TO THE SAME
COMMON GROUND AS ALL LIGHT NICHES, PUMPS, AND FIXTURES USING GREEN 8 AWG COPPER
WIRE PER NEC 680. If local code requires sealed conduit, then seal conduit opening inside niche with approved
sealant. 2) IMPORTANT: Observe diagram inside niche to insure that the very foremost edge of niche is finished
flush with the final tiled or painted surface of the pool wall -- area must be flat for grille to seat. 3) IMPORTANT:
Concrete structure around niche flange must be undercut and filled with sealing plaster to insure a proper watertight
seal.
IV. INSTALLING THE LL916 U/W SPEAKER WITH 21007 SUPPORT
1) Insure that grounding lug inside speaker niche is grounded to common pool ground via green 8 AWG copper
wire, and that termination is potted with UL potting compound to prevent deterioration. 2) Insert the V-shaped 21007
speaker support upright into the A9000 niche with long stand-off's facing into niche. 3) Draw LL916 underwater
speaker cable through conduit leaving sufficient cable coiled inside niche for future on-deck inspections. 4) If code
calls for sealed conduit, then apply approved sealant around speaker cable and #8 grounding wire where it enters
conduit hub, and let dry. 5) Gently tilt the LL916 underwater speaker (cable side first) into the niche and place on
21007 stand. 6) Install A9002 grille, being careful not to overtighten screws. 7) Terminate the green U/W speaker
ground wire along with the green niche ground wire (8 AWG copper) to the same common pool ground as all pool
light niches and pumps. 8) Splice the speaker's black and white wires to two-conductor speaker wire (Class 2 rated):
16 gauge for <100' run; 14 gauge for 100'-200' run; Use direct burial cable for non-conduit installations.
9484-25V-50’ * APPLICATION & INSTALLATION GUIDE Page 1
2016 Lubell Labs Inc. All information subject to change without notice

V. WIRING THE LL916 U/W SPEAKER, AC205B XFMR BOX, BOSCH PLENA AMPLIFIER
IMPORTANT!: Mount amplifier and audio equipment in a vented cabinet or equipment rack,
located in a humidity free area. Connect AC powered audio equipment to audio-grade power
strip and GFCI outlet as required under National Electric Code. Test GFCI before each use.
Always vacate the water at the first sign of inclement weather and lightning storms. Avoid
microphone feedback and/or excessive sound levels, which can be harmful to speakers and
human hearing. Caution: Do not exceed 25 volts rms to the input of the AC205B
box. Exceeding this voltage will burn out the underwater speaker, which will not
be covered under the warranty. We highly recommend the Bosch Plena amplifiers
listed in our literature -- meets all low voltage safety requirements (grounded power
cord, UL commercial sound listing), has Class AB output stage for reactive speaker
stability, AND provides speaker protection circuit to help prevent burnout.
Connection of speaker, amplifier, house system by certified audio contractor only.
1. For 1 to 3 speaker installations, use Bosch PLE-1P120-US amplifier and connect all
AC205B transformers in parallel to the 25V speaker tap. (If using PLE-1ME120-US,
use 4 ohm tap.) For 4 to 6 speaker installations, use Bosch PLE-1P240-US amplifier
and connect all AC205B transformers in parallel to the 25V speaker tap. Amplifier
meets all NEC & UL safety requirements including grounded power cord (for
connection to GFCI outlet), UL Commercial Sound Listing (UL813), Class-2 wiring
rating, and 25V and COMMON speaker connections with speaker protection circuit.
2. Using a short 18 gauge speaker cable, connect “25V” screw terminal on Lubell
AC205B box to “25V” speaker terminal on amplifier, then connect “COM” screw
terminal on Lubell AC205B box to “0” (common) speaker terminal on amplifier. Use
one AC205B transformer box for each speaker installed, and connect (daisy-chain)
multiple boxes in parallel/phase only. Make sure plastic terminal blocks are inserted
fully and set screws tightened to hold firmly into place.
3. Connect black wire from LL916 underwater speaker to “B” screw terminal on Lubell
AC205B box, then connect white wire from LL916 underwater speaker to “W” screw
terminal on Lubell AC205B box. Green ground wire from LL916 underwater speaker
may be connected to junction box / common pool ground per paragraph IV section 7
on previous page. Follow ALL local, national, and international electrical code
regulations.
4. With power off, connect amplifier and any interconnected equipment to an audio
grade surge protected power strip; connect outlet strip to GFCI outlet only; Test
GFCI before each use.
5. Connect audio source (CD player, tuner, network device) to line input on Bosch
Plena amplifier or mixer amplifier per Bosch Plena manual.
6. Observing front panel power level meter on the Bosch Plena amplifier, adjust
volume of system (using outboard Crestron control and/or rear panel volume control
on Bosch Plena) so loudest section of music brings power level meter up to -3dB
maximum.
9484-25V-50’ * APPLICATION & INSTALLATION GUIDE Page 2
2016 Lubell Labs Inc. All information subject to change without notice

IMPORTANT: Use equipotential bonding grid only for all pool fixtures
9484-25V-50’ * APPLICATION & INSTALLATION GUIDE Page 3
2016 Lubell Labs Inc. All information subject to change without notice

VI. 9484 U/W SPEAKER KIT PICTORIAL
9484-25V-50’ * APPLICATION & INSTALLATION GUIDE Page 4
2016 Lubell Labs Inc. All information subject to change without notice

VII. Bosch Plena PLE-1P120-US and PLE-1P240-US Speaker Connection DIagram
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2016 Lubell Labs Inc. All information subject to change without notice

9484-25V-50’ * APPLICATION & INSTALLATION GUIDE Page 6
2016 Lubell Labs Inc. All information subject to change without notice