EAW SM155 User Manual

• Flat frequency response for maximum gain
before feedback
• High acoustic output capabilities for large stage
applications
• Wide bandwidth enables full production
capability through monitors - including kick
drum and bass guitar
The SM-155's wide bandwidth (48 to 18k Hz),
exceptionally smooth frequency response (± 1.5 dB
midband) and high output capabilities make it an ideal
choice for stage monitoring in clubs, auditoriums and
concert halls. Its true, uncolored audio reproduction gives
you an accurate picture of what you are doing on stage. The
cross-grainlaminated birch hardwood, wedge shaped
enclosure offers ruggedness, portability and flexability far
superior to competitive systems made of lesser materials.
The SM-155 is built to the same standards of advanced
acoustic design and master craftsmanship that make EAW
the first choice for high output systems in demanding
professional applications throughout the world.
The components inside the SM-155 include two high
technology RCF drivers and a specially developed,
equalized, third order dividing network. This combination of
advanced RCF drivers and sophisticated EAW electronic
interface results in a system with the smoothest mid-band
response of any high output monitor made today. In
addition, unlike other monitor systems, the SM-155 uses a
large 2 inch diameter diaphragm, compression, high
frequency driver which works right down to 1,200 Hz for
smooth response. This permits the elimination of narrow
band response spikes and results in considerably more
usable broadband gain before feedback. (As much as 10 dB
more gain as compared to simple 1211/tweeter designs.)
The SM-155's low frequency section includes a RCF383,
extended bass, 12 inch driver combined with an optimally
vented enclosure. This results in bass response previously
unattainable in a compact monitor, allowing for
reproduction of the full stage production, including kick
drum, through the monitor system.
SM-155 Specifications
Operating Range: 45 to 18,000 Hz
Frequency Response: 48 to 16,500 Hz + 4 dB
200 to 8,000 Hz+ 1.5 dB
Sensitivity: 99 dB SPL
Power Handling
Long Term (100 hours)
Sine Wave: 250 w RMS
Continuous Program: 400 w RMS
Maximum Output: 121 dB SPL at 1m
Nominal Impedance: 8 ohms
Nominal Coverage Angle: 100'H x 60'V
Enclosure Type: 90 liter Vented Box
Construction Material: Cross-grain-laminated Birch
Crossover Network
Type: Third Order Equalized L-C
Slope: 18 dB per octave
Frequency: 1,200 Hz

EAW SM155 Specifications

General

Brand	EAW
Model	SM155
Category	Speakers
Language	English

Summary

SM-155 Stage Monitor System Overview

Key Product Features

Highlights flat frequency response, high acoustic output, and wide bandwidth for stage applications, including kick drum and bass guitar.

Design and Construction

Describes the wedge-shaped enclosure made of cross-grain-laminated birch hardwood for ruggedness and portability.

Component Technology

Details the use of two high-technology RCF drivers and a specially developed, equalized, third-order dividing network.

Low Frequency Performance

Explains the inclusion of a 12-inch extended bass driver and an optimally vented enclosure for enhanced bass response.

SM-155 Technical Specifications

Operating Range

Specifies the audible frequency range from 45 to 18,000 Hz.

Frequency Response

Details the frequency response within +/- 4 dB from 48 to 16.5 kHz and +/- 1.5 dB from 200 to 8 kHz.

Sensitivity

Indicates the sound pressure level at 99 dB SPL.

Power Handling

Defines long-term (250W RMS) and continuous program (400W RMS) power handling capacity.

Maximum Output

States the maximum sound pressure level achievable at 121 dB SPL at 1 meter.

Nominal Impedance

Specifies the nominal electrical impedance as 8 ohms.

Nominal Coverage Angle

Defines the horizontal and vertical coverage angles as 100 degrees H x 60 degrees V.

Enclosure Type

Identifies the enclosure as a 90-liter Vented Box.

Construction Material

States the construction material is cross-grain-laminated Birch.

Crossover Network

Details the crossover network type, slope, and frequency.