5
grounding adapter when connecting to ungrounded out-
lets.
Do not use a ground-lifting adapter or cut the AC cable
ground pin.
Keep all liquids away from the MSL-4 to avoid hazards
from electrical shock.
Do not operate the unit if the power cables are frayed
or broken.
Tie-wrap anchors on the amplifier chassis provide strain
relief for the power and signal cables. Insert the plastic
tie-wraps through the anchors and wrap them around
the cables.
used to select the rating for slow-reacting thermal breakers.
The
maximum burst RMS
current is the maximum RMS cur-
rent over a one second duration. It is used to select the rating
for most magnetic breakers.
The
maximum instantaneous peak current during burst
is
used to select the rating for fast-reacting magnetic breakers and
to calculate the peak voltage drop in long AC cables according
to the formula
V
pk
drop
=
I
pk
x
R
total cable
Use the table below as a guide to select cables and circuit break-
ers with appropriate ratings for your operating voltage.
s
g
n
i
t
a
R
t
n
e
r
r
u
C
4
-
L
S
M
V
5
1
1
V
0
3
2
V
0
0
1
S
M
R
s
u
o
u
n
i
t
n
o
C
.
x
a
M
A
8
A
4
A
0
1
S
M
R
t
s
r
u
B
.
x
a
M
A
5
1
A
8
A
8
1
t
s
r
u
B
g
n
i
r
u
D
k
a
e
P
.
x
a
M
A
2
2
A
1
1
A
5
2
The minimum electrical service amperage required by a system
of Meyer speakers is the sum of their
maximum continuous
RMS
currents. We recommend allowing an additional 30%
above the minimum amperage to prevent peak voltage drops
at the service entry.
TROUBLESHOOTING NOTE: In the unlikely case that the cir-
cuit breakers trip (the white center buttons pop out), do not reset
the breakers
!
Contact Meyer Sound for repair information.
Safety Issues
Pay close attention to these important electrical and safety
issues.
Use a power cord adapter to drive the MSL-4 from a
standard 3-prong outlet (NEMA 5-15R; 125 V max).
earth
ground
chassis
ground
The MSL-4 requires a grounded outlet. Always use a
