Electro-Voice EVC-1122-VIW Data Sheet

Electro-Voice | EVC-1122-VI 12" speaker, vari-intense

indoor

EVC-1122-VI 12" speak­er, vari-intense indoor

▪ 12-inch two-way loudspeaker with asymmetrical

horn uniformly covers a defined rectangular area

▪ Power rating: 300 W Continuous, (1200 W Peak)

▪ Optional high quality transformer and patented

Automatic Saturation Control (ASC) preserve low
end in 70V/100V lines

EVC loudspeakers from Electro-Voice are two-way
systems that can be used in a broad range of
applications where wide bandwidth, vertical and
horizontal directivity control, and high efficiency are
required in a compact, cost-effective package. EVC
loudspeakers are voiced to complement other EV­Innovation models (EVF, EVH, EVA). The EVC-1122/VI is
a unique offering that is constructed in a variable­intensity (VI) configuration. In a variable intensity
loudspeaker, the downward angle of the front-facing
woofer and the asymmetrical wave guide work
together to evenly cover a clearly defined, rectangular
audience area with a single loudspeaker system.
The size of the coverage area is determined by the
mounting height and the vertical mounting angle of the
loudspeaker. The advantage of the VI approach is that
there is reduced variation in sound level from the front
to the back of the audience, compared to typical point
source solutions. In most situations, the change is so
gradual that the sound level will seem almost constant
as you walk the coverage pattern. The EVC-1122/VI
delivers clear, articulate speech reproduction but, in
addition, is an excellent choice for foreground music
applications. It can be used as a stand-alone full-range
system, or as the mid-bass/high-frequency box in
multi-way loudspeaker systems when used with the
complementary EVC-1181S 18" subwoofer.
The high frequency section of the EVC 1122/VI
loudspeaker comprises a single 1¼-inch pure titanium
dome compression driver directly coupled to a
compound waveguide that combines long-throw and

short-throw behavior in a single acoustical device. This
unique waveguide creates uniform pattern control and
smooth, linear response.
The low frequency section employs a high-output
woofer that was developed using state-of-the-art,
computer-aided optimization to provide low distortion,
high efficiency, and maximum intelligibility at high
sound pressure levels. The passive crossover
implements a fourth-order Linkwitz Riley design with
slopes of 24 dB per octave for smooth off-axis
response and improved definition through the critical
vocal range.
The EVC series is an extremely cost effective solution
for many fixed-install applications. The enclosures are
constructed of weather-resistant plywood and finished
with EVCoat for enhanced durability. The EVC-1122/VI
has been designed with three M10 rigging points as
well as attachment points for an optional U-bracket
that can be mounted to the ceiling or the wall behind
the loudspeaker. All EVC series loudspeakers accept
wire gauges up to 10 AWG. The input panel also
accepts optional covers with NL4-type connectors or
weatherized gland-nuts.
For 70V/100V operation, the input panel has an
internal landing pad for mounting EV's high-quality
TK150 audio transformer. Adding a TK150 to the EVC
input panel engages EV's patented Automatic
Saturation Compensation (ASC), which preserves low
frequency performance while presenting a stable load
to the amplifier regardless of how many loudspeakers

69°

63°

276.6 mm
[10.89 in]

411.0 mm
[16.18 in]

527.8 mm
[20.78 in]

647.6 mm
[25.50 in]

202.0 mm
[7.95 in]

| EVC-1122-VI 12" speaker, vari-intense indoor

2

are connected in parallel. This results in transformer
and non-transformer EVC loudspeakers that sound
virtually identical.

Technical specifications

Frequency response (-3 dB)

Frequency range (-10 dB)

Rec. high-pass frequency: 45 Hz

Passive crossover frequency: 1.6 kHz

Axial sensitivity1: 95 dB (1 W/1 m)

Max. calculated SPL: 126 dB

Power handling2: 300 W (Continuous), 1200 W

Nominal impedance: 8 Ω

Minimum impedance: 7 Ω

LF transducer: EVS-12M

HF transducer: DH-3

Environmental: IEC 60529, IP44

Dimensions (H x W x D): 528 mm x 411 mm x 648 mm

Shipping weight: 24.4 kg (53.9 lb)

1

Full-space measurement.

2

EIA RS-426A, tested for eight hours.

3

With recommended preset.

Frequency response and impedance:

1, 3

: 70 Hz - 20 kHz

1, 3

: 50 Hz - 25 kHz

1

(Peak)

Connectors: Dual four-pin 10 AWG Phoenix/

Euro Block screw-terminals

Enclosure: 15-mm plywood with EVCoat

Grille: 18 GA powder-coated steel with

rotatable logo

Suspension: (8) M10 suspension points

Color: Black or white

(20.78 in x 16.18 in x 25.50 in)

Net weight: 21.8 kg (48.1 lb)

Dimensions:

Architectural and engineering specifications:

The loudspeaker shall be a two-way passive system
with Euro block input connectors that accept wire
sizes up to AWG 10. The two Euro block connectors on
the input panel should be configured for a speaker­level, two-conductor input that is connected in parallel
to terminals on a second Euro block connector so that
additional loudspeakers can be connected in parallel.
The remaining pair of terminals on each of the two
connectors should be configured for a pass-through
audio connection. The input panel should also be able
to accept NL4-type connectors or be adapted for
weather-proof single or dual gland nuts when fitted
with an accessory input adapter plate.
The input panel should include a landing pad and
appropriate electrical connections on the inside of the
loudspeaker cabinet so that the installer can mount
and connect a high-quality audio transformer in series
with the direct low-impedance connection to the
loudspeaker dividing network. When the transformer is
installed, the input circuit network shall be augmented
with a high-pass filter with a current-dependent corner
frequency in order to preserve the full bass response
of the loudspeaker while protecting system amplifiers
from the drop in load impedance that commonly
occurs when audio transformers are driven into
saturation.
The passive dividing network shall employ an
enhanced 4th-order filter topology with response­shaping equalization and high frequency protection,
resulting in acoustical crossover slopes of 24 dB per
octave or steeper. The system shall have a 12-inch low­frequency transducer with a nominal impedance of 8
ohms, a 2-inch diameter voice coil. System continuous
average power rating shall be 300 watts (per ANSI/EIA
RS-426 A). The high-frequency section shall employ a
compression driver with a 1.25-inch voice coil and

1.25-inch titanium diaphragm, mounted on a
compound waveguide that has been optimized to
evenly cover a rectangular listening area, the