Lubell 9484-25V-50 User manual

I. DESCRIPTION
The Lubell 9484 is a professional 37.5 watt in-wall underwater speaker kit intended for contractor installation
at 4’ to 6’ depth (6' ideal) during new concrete or gunite pool constructions 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 stainless steel wet niche with 3/4” bronze conduit hub, A9002
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
For lap swimming applications, use one 9484 kit for each 20 feet (6.1 meters) of pool length. See last paragraph of
online brochure http://www.lubell.com/9484.html for locating diagrams of typical pools. Use two 9484 kits for 20' x 40'
pools and locate 10' from each end 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. Since stereo imaging is not possible in water, use one speaker per 20’ x 20’ zone.
III. INSTALLING THE A9000/2 NICHE/GRILLE (LICENSED POOL CONTRACTOR/ELECTRICIAN ONLY)
CAUTION: 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. 1) Rough in
each A9000 wet-niche at 6’ depth in positions recommended above in COVERAGE section, bonding external lug to
equipotential bonding grid per NEC 680. Run conduit to nearby above water J-box; Run conduit from J-box to air
conditioned equipment room. CAUTION: IF UTILIZED, GROUNDING LUG INSIDE UNDERWATER SPEAKER
NICHE MUST BE GROUNDED TO THE SAME COMMON GROUND AS ALL LIGHT NICHES, PUMPS, AND
FIXTURES USING GREEN 8 AWG COPPER WIRE PER NEC SECTION 680. If local code requires sealed
conduit, then seal conduit 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) If utilized, 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
2014 Lubell Labs Inc. All information subject to change without notice

V. WIRING THE LL916 U/W SPEAKER, AC205B XFMR BOX, Peavey IPA1502 or UMA1502 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 power will burn out the underwater speaker, which will not be covered under the warranty.
We recommend the Peavey amplifiers listed in our literature -- meets all low voltage safety requirements
(grounded power cord, UL commercial sound listing) AND provides speaker protection circuit to help
prevent burnout.
1. For 1 to 4 speaker installations, use Peavey IPA1502 power amplifier or UMA1502 mixer/amplifier;
For 5 to 8 speaker installations, use Peavey IPA300T amplifier. 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 COMMON
speaker terminal on amplifier. Use one AC205B transformer box for each speaker installed, and
connect multiple boxes in parallel/phase only.
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 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 AUX input on Peavey IPA1502 amplifier or
UMA1502 mixer/amplifier.
6. The Peavey amplifiers come with plastic screw terminal blocks, do not discard. The AUX input jack(s)
are factory set to “balanced” wiring. If you wish to convert these input jack(s) to “unbalanced” wiring
(due to ground loop resulting in hum), then please plug in the terminal block and install a 1” jumper
wire betwen the “ GROUND ” terminal block screw and the “-” INPUT terminal block screw.
7. Set the LOOP switch on rear of Peavey IPA1502 or UMA1502 to BYPASS position (unless using
outboard equalizer), or you will not get any sound. Set the “60Hz LOW CUT” switch to “ON” position.
8. Set UMA1502 tone controls and any outboard tone and/or equalizer controls to "flat" (0) position. Set
channel 4 (AUX) volume control on UMA1502 amplifier to 8 (N/A on IPA1502). Make sure MASTER
VOLUME control on IPA1502 and UMA1502 is set to 0 to start.
9. Turn on power to the house audio system, and to the IPA1502 or UMA1502 amplifier. With loudest
passage of music playing from audio sounce (CD, tuner, network), verify that Peavey channel 4 signal
light is flashing green, but not red (UMA1502 only). If red, reduce channel 4 volume control.
10. While monitoring the underwater sound, turn up the IPA1502 or UMA1502 MASTER volume control
until the sound level from the underwater speaker is adequate to swimmers but not so high that the
SPS light or clip light flashes frequently. The SIGNAL light by the MASTER control will indicate that
music is being sent to the underwater speaker by flashing green. DO NOT exceed comfortable sound
level or level that causes the SPS or CLIP light to flash constantly. (SPS light indicated soft clipping,
and should only flash on peaks.)
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2014 Lubell Labs Inc. All information subject to change without notice

IMPORTANT: Use equipotential bonding grid only for all pool fixtures
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2014 Lubell Labs Inc. All information subject to change without notice

VI. 9484 U/W SPEAKER KIT PICTORIAL
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2014 Lubell Labs Inc. All information subject to change without notice

VII. PEAVEY IPA1502 OR UMA1502 AMPLIFIER INTERFACE PICTORIAL
9484-25V-50’ * APPLICATION & INSTALLATION GUIDE Page 5
2014 Lubell Labs Inc. All information subject to change without notice