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Frequency Response
The Sb180's axial frequency response was
measured in Electro-Voice's large anechoic
chamber at a distance of 3 meters (10 feet)
with a swept sine-wave input. Figure 1 has
been averaged and corrected for 1 watt at
1 meter.
Enclosure Construction
Intended to be used as a portable speake sys-
tem, the Sb180 is ruggedly constructed of
3
/
-inch void-free plywood. All joints are
4
dado cut, and the cabinet is finished with a
rugged paint finish that is both attractive and
highly durable. A full-length steel grille
protects the woofer from damage. Heavy-
duty, firmly secured rubber feet and recessed
handles complete the picture, ensuring that
the Sb180 speaker system is ideally suited
for a long and reliable life on the road.
Sb180 Connections
The Sb180 is equipped with two paralleled
®
Neutrik Speakon
NL4MPR-V connectors,
selected for their ability to reliably deliver
to the speaker components the high currents
delivered by high-wattage power amplifiers.
The NL4FC is a four-pin connector, and Fig-
ure 5 shows how the usual two-conductor
speaker cable should be wired to pins 1+ and
1– of the connector.
Note also that Neutrik Speakon
nectors and wiring accessories are available
from Pro Co Sound, Inc. and Whirlwind Mu-
sic Distributors, Inc. To find your local Pro
Co, Whirlwind or Neutrik dealer, contact:
Pro Co Sound, Inc.
135 E. Kalamazoo Ave.
Kalamazoo, MI 49007
616/388-9675
Whirlwind Music Distributors, Inc.
P.O. Box 1075
Rochester, NY 14603
716/663-8820
Neutrik USA, Inc.
195-S3 Lehigh Ave.
Lakewood, NJ 08701
908/901-9488
2
Sb180 Subwoofer
Use with Satellite Speaker Systems
3
The 1
/
-in. stand mount in the top surface of
8
the Sb180 can be used with any length of
3
standard 1
/
to ensure that the Sb180 is used on a flat and
level surface. Electro-Voice strongly recom-
mends that the top of the satellite speaker be
no more than 8 feet (244 cm) above the
ground and weigh no more than 75 pounds
(34 kg). It is the responsibility of the user to
ensure that the system is safe and stable. Do
not use where the system can be easily
knocked over. A 34-inch mounting pole is
included with the Sb180.
Service
In the unlikely event the Sb180 requires ser-
vice, the woofer can be replaced or serviced
from the front. A service data sheet is avail-
able from Electro-Voice.
Power-Handling Test
Electro-Voice components and systems are
manufactured to exacting standards, ensur-
ing they will hold up, not only through the
most rigorous of power tests, but also
through continued use in arduous, real-life
conditions. The EIA Loudspeaker Power
Rating Full Range (ANSI/EIA RS-426-A
1980) uses a noise spectrum which mimics
typical music and tests the thermal and me-
chanical capabilities of the components.
®
cables, con-
Electro-Voice will support relevant addi-
tional standards as and when they become
available. Extreme, in-house power tests,
which push the performance boundaries of
the woofers, are also performed and passed
to ensure years of trouble-free service.
Specifically, the Sb180 passes ANSI/EIA
RS-426-A 1980 with the following values:
R
SR
P
E(MAX)
Test voltage = 64.34 volts rms,
The "peak" power-handling capacity of a
woofer is determined by the peak test volt-
age amount. For the Sb180, a 128.7-volt peak
test voltage translates into 2,400-watts short-
term peak power-handling capacity. This is
the equivalent of four times the "average"
-in. tube. Care should be taken
8
= 6.9 ohms (1.15 x R
)
E
= 600 watts
128.7 volts peak
power-handling capacity, and is a peak that
can be sustained for only a few milliseconds.
However, this sort of short duration peak is
very typical in speech and music. Provided
the amplifier can reproduce the signal accu-
rately, without clipping, the woofer will also
perform accurately and reliably, even at these
levels.
Architects' and Engineers'
Specifications
The loudspeaker shall be a horn-loaded type.
The low frequencies shall be reproduced with
a 600-watt (ANSI/EIA RS-426-A 1980)
EVX-180B 460-mm (18-in.) woofer. The
system will reproduce the frequencies
from 33 to 250 Hz. The system shall be
capable of producing average sound lev-
els in excess of 128 dB in the long term,
and short-term peaks of 135 dB.
The enclosure shall be constructed of black,
painted, multilayer plywood and have a metal
grille which attaches with six screws. The
dimensions shall be 603.3 mm (23.75 in.)
tall, 571.5 mm (22.5 in.) wide and 806.5 mm
(31.75 in.) deep. The system shall weigh
43 kg (102 lb). Neutrik Speakon
tions shall be provided.
3
A 1
/
-in. stand mount capable of support-
8
ing 75 pounds (34 kg) will be provided in
the top surface of the Sb180 enclosure.
The loudspeaker system shall be the
Electro-Voice Sb180 subwoofer.
Limited Warranty
Electro-Voice products are guaranteed
against malfunction due to defects in mate-
rials or workmanship for a specified period,
as noted in the individual product-line
statement(s) below, or in the individual prod-
uct data sheet or owner's manual, beginning
with the date of original purchase. If such
malfunction occurs during the specified pe-
riod, the product will be repaired or replaced
(at our option) without charge. The product
will be returned to the customer prepaid.
Exclusions and Limitations: The Limited
Warranty does not apply to: (a) exterior fin-
ish or appearance; (b) certain specific items
described in the individual product-line
statement(s) below, or in the individual prod-
®
connec-
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