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INSTALLATION & OPERATION
The Lubell Labs model
LL916
underwater speaker is a precision instrument that deserves careful
handling. The following simple rules will serve as a guide to achieving maximum life:
1
.
CAUTION!
Carefully inspect the underwater speaker cable before each use, and do not
use if damaged. Do not attempt to open and self-repair the
LL916
as this will void the
warranty. If speaker cable needs replacement, please return the unit to us for low cost
replacement. Please contact your installing dealer for questions regarding service, or
call Lubell customer service at (614) 235-6740 between
8:30-17:00est
.
2
.
CAUTION! Always vacate the water during electrical storms or inclement weather.
3
.
CAUTION!
Be sure that your amplifier is connected to a
GFCI
protected AC outlet
only, and is installed indoors on a shelf or in a vented equipment rack in an area with
low humidity. If the amplifier will be used portably, it must be kept on a stationary
wooden equipment table indoors with a minimum distance of 10' away from the water.
4
.
A
UL813
listed commercial sound amplifier must be selected that provides a 25V constant
voltage speaker output. Allow 37.5 watts power consumption for each
LL916
/AC205
connected to the 25V line. We recommend Peavey
UMA75
2
mixer/amp or
IPA75
2
power
amp (75 watts) to power one or two
LL916/AC205
’s;
Peavey
UMA1502
mixer/amp or
IPA150
2
power amp (150 watts)
for three or four
LL916/
AC205
’s
;
Peavey
IPA300T
for five
to eight
LL916/
AC205
’s
.
5
.
Connect
AC205B
/C
transformer box(es) in parallel and in phase to the “25V” speaker output
terminals on amp
.
AC205B
box(es) must be located indoors, and may be located by the
amplifier, or located closer to the
OP1
jack plate(s) providing lower loss for long cable runs.
Do
not
use
L-pad
or
autoformer
between the underwater speaker(s) and the amplifier
. If
remote volume control is needed
, use the “remote volume” pot co
n
nection on the Peavey
UMA
series mixer
, or insert a
Crestron
type volume controller between the source device
(receiver, pre-amp, CD/tape) and the Peavey
UMA
amplifier’s stereo
tape/aux
input.
6
.
The
OP1
connector plate fastens to a single-gang all-weather
J-box
,
which should be
mounted at least 8” above the deck to a cabana wall or wooden post by the pool. For single
speaker installations, center the
J-box
on the length of the pool where the U/W speaker will
be placed; Run 1/2” conduit from this box back to the house
. For two speaker installation
s,
mount each
J-box
on a post ¼ pool length from each end of the pool
and run 1/2” conduit
between
J-box
es
,
and 1/2” conduit from one box back to house.
Install 14 gauge 2 conductor
speaker wire in the conduit between each transformer box an
d
OP1
jack plate. Connect one
end (of each pair) to
“LL916”
terminals
(B=black,
W=white)
on
AC205B
transformer box
and other end to
OP1
connector plate’s black and white wires. Connect the green ground
wire from each
OP1
connector to a good ground using #8 copper.
7
.
Take good care of the U/W speaker cable, as it is not covered under the guarantee. Do not
use the speaker cable to lift, lower, or support the underwater speaker. Instead attach a sturdy
1/4" nylon cord to the speaker cage for this purpose. Lower the speaker to a 6’ (1.83 meter)