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Product Summary
The Meyer SB-1 Parabolic Sound Beam is the first
device that propagates sound waves with SPLs that
decrease as little as 3 dB per doubling of distance for
more than 300 ft, across a five-octave frequency range,
with a consistent and narrow beam width.
The physical construction of the SB-1 consists of a
fiberglass parabolic reflector dish with a bullet-shaped
pod containing a 4” compression driver and an aspherical
horn mounted over, and aimed at, the center of the dish.
One 12” band-limited cone driver is embedded inside the
center of the dish facing the pod to steer and focus the
sound produced from the horn. The dish housing serves
as the parabolic aiming mechanism and contains the
amplification, signal processing, and control electronics for
both drivers. The high frequency pod can be disas-
sembled and packed for shipping inside the dish.
AC Power
The AC voltage operating ranges for the SB-1 are
85 – 134 V and 165 – 264 V, at 50 or 60 Hz. The SB-1
performs surge suppression for high voltage transients and
can safely withstand voltages up to 275 VAC.
Continuous voltages above 275 VAC
may damage the unit!
The Intelligent AC power supply protects the drivers
and amplifier components when an AC source is
applied to the SB-1 by
• auto-selecting the voltage;
• performing surge suppression and minimizing
inrush current;
• filtering EMI.
After three seconds, the main power supply is slowly
ramped on. The SB-1 uses a NEMA L6-20P or IEC 309
male power inlet and satisfies UL, CSA, and EC safety
standards.
Use the following AC cable wiring diagram to create
international or special-purpose power connectors:
AC cable color code
If the colors referred to in the diagram don't correspond to
the terminals in your plug, use the following guidelines:
• Connect the blue wire to the terminal marked
with an N or colored black.
• Connect the brown wire to the terminal marked
with an L or colored red.
• Connect the green and yellow wire to the termi-
nal marked with an E (or ) or colored green (or
green and yellow).

Power Requirements

The SB-1 presents a dynamic load to the AC mains which
causes the amount of current to fluctuate between quiet
and loud operating levels. Since different types of cables
and circuit breakers heat up at varying rates, it is essential
to understand the types of current ratings and how they
correspond to circuit breaker and cable specifications.
The maximum continuous RMS current is the maximum
RMS current in a period of at least 10 seconds. It is used
to calculate the temperature increase in cables, which is
used to select cables that conform to electrical code
standards. It is also used to select the rating for slow-
reacting thermal breakers.
The maximum burst RMS current is the maximum RMS
current in a period of approximately 1 second. It is used to
select the rating for most magnetic breakers.
The maximum 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 accord-
ing to the formula
Vpkdrop = Ipk x Rtotal cable
Use the table below as a guide to select cables and circuit
breakers with appropriate ratings for your operating voltage.