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
Vpkdrop = Ipk x Rtotal cable
Use the table below as a guide to select cables and circuit break-
ers with appropriate ratings for your operating voltage.
sgnitaRtnerruC4-LSM
V
511 V
032 V001
SMRsuounitnoC.xaM
A8 A
4A
01
SMRtsruB.xaM
A
51 A
8 A
81
tsruBgniruDkaeP.xaM
A
22 A11 A52
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