Electro voice 1 0 kw brochure

Page 1

ElectroVoice° -

1.0kW

Lightweight Power

Amplifier

- 3th watts per channel at 8 ohms,
450 watts per channel at 4 ohms,

950 watts per channel at 8 ohms
in bridge mode.

- Dynamic Signal ProcessingTm
provldes excellent low-trequency
pertormance

- Only 21 pounds-wary lightweight

- Conservative thermal design
ensures low-operating temperature

- Class H circuitry
- Dual-Mono Construction

- Three-year parts-and-labot
warranty

Description

The Electro-Voice l.0kW is a very high-
quality amplifier designed to provide maxi-
mum sonic quality with minimum weight.
Its built-in Dynamic Signal Processingm
extracts maximum performance from any
full-range speaker system.

Each channel of the 1.0kW can deliver more
than 450 watts into a 4~ohm load. or 300 watts
into an 8-ohm load at less than l% Tl-[D at l
kHz. In bridge mode, the amplifier deliv~
ers more than 950 watts into an 8~ohm
load.

The 1.0kW 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 ampli-
fier. a secondary group ofoutput 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 am-
plifier chassis,

The high-speed switch-mode power supply
in the l.0kw holds the secret to the light
weight of the amplifier. The power supply

switches at a rate of 84,000 times per second.
which allows the toroidal transformers to be
significantly downsized. This substantially
decreases the weight of the amplifier and also
lowers the amount of heat created inside the
amplifier.

Heat is a major contributor to the failure of
electronic equipment and the l.0kW utilizes
a thermal system that effectively removes
heat from the amplifier. Each channel of the
l.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 the 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 l.0kW employs extensive protection
circuitry that guards the amplifier and its load
from problems. Protection circuits guard
against over-temperature. tum on/offtran-
sients. shorted outputs, radio-frequency
interference and dc faults.

The operating status of the amplifier is in-
dicated by LEDs mounted on the front

panel. Each channel has an independent peak
indicator. Poweron. bridge mode. protection
active and excessive heat situations are also
individually indicated via an LED on the
front panel of the amplifier.

The l.0kW has electronically balanced
combo type input connectors that accept an
IEC 268 standard XLR-typc 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 selec-
tion of either dual-channel operation or
bridgemode operation of the amplifier is lo-
cated at the bottom of the rear panel. and
when engaged is flush with the panel to
prevent 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 1.0kW regulate the gain of the amplifier
The different levels of attenuation are
indicated for each channel.

The Dynamic Signal Processing circuitry in
all kW Series amplifiers sets their performance

Page 2

l .OkW Ligthelght Power Amplifier

l .OkW Lightweight Power Amp r

apart from other lightweight amplifiers. TWO
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 innova-
tive circuin ensures that the transient re-
sponse of a speakensystem's low~frequency
driver is accurately controlled and any phase
distortion is minimized. The three settings
available are LPN. Bo and Off. The LPN
setting is used for compact. vented speaker
systems other than those manufactured by
Electra-Voice. It is a second-order shelving
equalizer with a pole frequency of 50 Hz.
The 136 selling is specifically for Electro»
Voice speaker systems and supplies a 6-dB
boost at the selected pole frequency that is
flawlessly combined with an undampcd
second-order high-pass filter to provide
maximum low-frequency impact and infra<
sonic protection. The 86 setting offers three
different park-boost frequencies: 26 H; 43 Hz
and 60 Hz. The box-tuning frequency of a
speaker system determines which pole fre-
quency is appropriate.

The l.0kW has been evaluated and tested to
applicable ANSI/UL and CSA stnadards for
use in the US. and Canada. The NRTL/C
mark adjacent to the CSA mark signifies the
product meets applicable standards in the
US. and Canada.

The 21- pound Electro-Voice l.0kW deliv-
ers professional-quality amplification. Long-
term 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 high-
power output devices in a truecomplimentary-
symmetry 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 transis-
tors against overtemperature. excessive out-
put 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 loud-
speaker. The built-in processor shall be ca-
pable of being adjusted for the enclosure type
and low~frequency characteristics of the
connected 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 frequen-
cies for B6 alignment of 60 Hz. 43 Hz and
26 Hz.

Front~panel indicators shall include power
on. peak. overtemperaturc. 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 follow»
ing 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 375 watts into 4 ohms from
20 Hz to 20 kHz at less than 0.10 THD.
greater than 260 watts into 8 ohms from
20 Hz to 20 kHz at less than 0.l0 THD.
greater than 750 watts into an 8-ohm bridged
loadfromZDHzto20kl-izatlessthan0.lo%
THD; hum and noise shall be greater than
100 dB (A weighted) below rated output
power; frequency response shall be 12 to
60 kHz. +0/-3 dBr. any mode. at any output
power up to rated output power, damping
factor shall be greater than 200 at any fre-
quency up to l 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 (19in) x 469.9 mm

(18.5 in). Net weight shall be 9.52 kg (2] to).
Color. dark gray with white nomenclature.
The Low} has been evaluated and tested to
applicable ANSI/UL and CSA stnadards for
use in the US. and Canada. The NRTLIC
mark adjacent to the CSA mark signifies the
product meets applicable standards in the
US. and Canada.

The power amplifier shall be the
Electra-Voice 1.0 kW.

Uniform Limited Warranty Statement

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
slaternent(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-
uct data sheet or owners manual; (c) mal-
function 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 EV'I Au-
dio 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 ser-
vice representatives together with proof of
purchase of the product in the form of a bill
of sale or receipted invoice. A list of autho-
rized service representatives is available from
EVI Audio Service at 600 Cecil Street.
Buchanan. MI 49107 (SOC/234683] or FAX
616/695-4743). Incidental and Conse-
quential Damages Excluded: Product re-
pair or replacement and return to the cus-
tomer are the only remedies provided to the
customer. Electro-Voice shall not be liable