2.0kW
Lightweight Power
Amplifier
• 550 watts per channel at 8 ohms,
900 watts per channel at 4 ohms,
1,850 watts per channel at 8 ohms
in bridge mode
• Dynamic Signal Processing
provides excellent low-frequency
performance
• Ultralightweight—only 25 pounds
• Conservative thermal design
ensures low-operating temperature
• Class H circuitry
• Dual-Mono Construction
• Separate switch-mode power
supply for each channel
• Three-year parts-and-labor warranty
TM
Description
The Electro-Voice 2.0kW is a very highquality amplifier designed to provide maximum sonic quality with minimum weight.
Its built-in Dynamic Signal Processing
extracts maximum performance from any
full-range speaker system.
Each channel of the 2.0kW can deliver more
than 900 watts into a 4-ohm load, or 550 watts
into an 8-ohm load at less than 1% THD at 1
kHz. In bridge mode, the amplifier delivers more than 1,850 watts into an 8-ohm
load.
The 2.0kW design features an innovative
Class H operation. Class H operation allows
a primary compliment of output devices to
operate in low-power situations, as larger
power requirements are made of the amplifier, a secondary group of output devices are
pressed into operation. Class H operation
offers the ability to supply large amounts of
power with excellent efficiency and reduces
the potential for heat buildup inside the amplifier chassis.
The high-speed switch-mode power supplies
in the 2.0kW hold the secret to the light
weight of the amplifier. Each channel of the
TM
amplifier has a separate power supply that
switches at a rate of 84,000 times per second, which allows the toroidal transformers
to be significantly downsized. The smaller
transformers substantially decrease the
weight of the amplifier and also lower the
amount of heat created inside the amplifier.
Heat is a major contributor to the failure of
electronic equipment and the 2.0kW utilizes
a thermal system that effectively removes
heat from the amplifier. Each channel of the
2.0kW has a totally separate heat sink more
than 18 inches in length that runs down each
side of the amplifier. Placing the heat sinks
on opposite sides of the amplifier chassis
avoids creating an area of concentrated heat,
and makes removal of heat a much easier
job. Each channel is also equipped with a
continuously variable speed fan to remove
the heat and the fans are quiet enough to be
used in noise-sensitive situations.
The 2.0kW employs extensive protection
circuitry that guards the amplifier and its load
from problems. Protection circuits guard
against overtemperature, turn on/off transients,
shorted outputs, radio-frequency interference
and dc faults.
The operating status of the amplifier is in-
dicated by LED’s mounted on the front
panel. Each channel has an independent peak
indicator. Power on, bridge mode, protection
active and excessive heat situations are also
individually indicated via an LED on the
front panel of the amplifier.
The 2.0kW has electronically balanced
combo type input connectors that accept an
IEC 268 standard XLR-type connector, or a
1/4-inch phone plug. A parallel connection
for routing signal to additional amplifiers is
provided by a male XLR-type connector on
each channel.
An input routing switch that allows selection of either dual-channel operation or
bridge-mode operation of the amplifier is located at the bottom of the rear panel, and
when engaged is flush with the panel to
pre vent accidental bumping of the switch.
Output connectors are heavy-duty binding
posts that provide a secure connection via
banana plugs, or will accept wire up to
7AWG in size.
Detented potentiometers on the front panel of
the 2.0kW regulate the gain of the amplifier.
The different levels of attenuation are
indicated for each channel.
The Dynamic Signal Processing
TM
circuitry in
2.0kW Lightweight Power Amplifier
all kW Series amplifiers sets their performance
apart from other lightweight amplifiers. T wo
switches on the rear of the amplifier select
the mode of operation of the processor and
a pole frequency that should be matched to
the tuning of a speaker system. This innovative circuitry ensures that the transient response of a speaker systems low-frequency
driver is accurately controlled and any phase
distortion is minimized. The three settings
available are LPN, B6 and Off. The LPN
setting is used for compact, vented speaker
systems other than those manufactured by
Electro-Voice. It is a second-order shelving
equalizer with a pole frequency of 50 Hz.
The B6 setting is specifically for ElectroVoice speaker systems and supplies a 6 dB
2.0kW Lightweight Power Amplifier
boost at the selected pole frequency that is
flawlessly combined with an undamped
second-order high-pass filter to provide
maximum low-frequency impact and infrasonic protection. The B6 setting offers three
different peak-boost frequencies: 26 Hz, 43 Hz
and 60 Hz. The box tuning frequency of a
speaker system determines which pole frequency is appropriate.
The 2.0kW has been evaluated and tested to
applicable ANSI/UL and CSA standards for
use in the U.S. and Canada. The NRTL/C mark
adjacent to the CSA mark signifies the product meets applicable standards in the U.S. and
Canada.
The 25-pound Electro-Voice 2.0kW delivers
professional-quality amplification. Longterm reliability and maximum portability
make this amplifier the foremost choice
among mobile sound professionals.
Architects’ and Engineers’
Specifications
The power amplifier shall be a dual-channel
model of solid-state design employing highpower output devices in a true-complimentarysymmetry output circuit. It shall be capable of
operating from a 120 V, 60 Hz or 220/240 V,
50 Hz ac line.
The amplifier shall contain sensing circuitry
to provide protection for the output transistors against overtemperature, excessive output voltage, radio-frequency interference,
shorted loads and excessive phase shift. The
load shall be similarly protected against start
up/shutdown transients, low ac line voltage,
and dc.
The power amplifier shall contain processing
circuitry that will ameliorate the phase and
transient response problems of the loudspeaker. The built-in processor shall be capable of being adjusted for the enclosure type
and low-frequency characteristics of the
con nected speaker.
Rear-mounted panel controls shall include
an input routing switch for selecting dual/
stereo or parallel mono operation and two
switches for control of the processor. The
processor controls shall include a switch for
turning the processor off and selecting the
enclosure type and three selectable frequencies for B6 alignment of 60 Hz, 43 Hz and
26 Hz.
Front-panel indicators shall include power
on, peak, overtemperature, protect active,
and bridge-mode. Front-panel controls shall
include a power switch and level controls
that shall be detented potentiometers with
accurate markings.
The power amplifier shall meet the following performance specifications: maximum
input voltage, 7.75 V rms; input voltage for
rated output power into 4 ohms, shall be
.74 V rms; rated output power per channel,
greater than 700 watts into 4 ohms from
20 Hz to 20 kHz at less than 0.10 THD,
greater than 450 watts into 8 ohms from
20 Hz to 20 kHz at less than 0.10 THD,
greater than 1,400 watts into an 8 ohm
bridged load from 20 Hz to 20 kHz at less
than 0.10% THD; hum and noise shall be
greater than 100 dB (A weighted) below
rated output power; frequency response
shall be 12 to 6 0 kHz, +0/-3 dBr , any mode,
at any output power up to rated output power;
damping factor shall be greater than 200 at
any frequency up to 1 kHz in dual mode with
an 8 ohm load; intermodulation distortion
(SMPTE) shall be less than 0.05% at rated
power in any mode into 8 ohms; operating
temperature shall be up to 50 °C ambient;
channel separation shall be greater than 50 dB.
Dimensions shall be (H x W x D): 88.9 mm
(3.5 in.) x 482.6 mm (19 in.) x 469.9 mm
(18.5 in.). Net weight shall be 11.33 kg (25
lb). Color: dark gray with white nomenclature.
The 2.0kW has been evaluated and tested to
applicable ANSI/UL and CSA standards for
use in the U.S. and Canada. The NRTL/C mark
adjacent to the CSA mark signifies the product meets applicable standards in the U.S. and
Canada.
The power amplifier shall be the
Electro-Voice 2.0kW.
Uniform Limited Warranty Statement
Electro-Voice products are guaranteed
against malfunction due to defects in materials or workmanship for a specified period,
as noted in the individual product-line
statement(s) below, or in the individual product data sheet or owner’s manual, beginning
with the date of original purchase. If such
malfunction occurs during the specified period, 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
W arranty does not apply to: (a) exterior finish or appearance; (b) certain specific items
described in the individual product-line
statement(s) below, or in the individual product data sheet or owner’s manual; (c) malfunction resulting from use or operation of
the product other than as specified in the
product data sheet or owner’s manual; (d)
malfunction resulting from misuse or abuse
of the product; or (e) malfunction occurring
at any time after repairs have been made to
the product by anyone other than EVI Audio Service or any of its authorized service
representatives. Obtaining Warranty Ser-
vice: To obtain warranty service, a customer
must deliver the product, prepaid, to EVI
Audio Service or any of its authorized service representatives together with proof of
purchase of the product in the form of a bill
of sale or receipted invoice. A list of authorized service representatives is available from
EVI Audio Service at 600 Cecil Street,
Buchanan, MI 49107 (800/234-6831 or FAX
616/695-4743). Incidental and Conse-
quential Damages Excluded: Product repair or replacement and return to the customer are the only remedies provided to the
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