Electro-Voice EKX-18S, EKX-15S, EKX-15 Users Manual

EKX Passive Loudspeakers

EKX-12, EKX-15, EKX-15S, and EKX-18S

en | User Manual

Table of contents

en 3

1

1.1 Important Safety Instructions 4

1.2 Precautions 4

1.3 Suspension 5

2

2.1 System features 7

3

3.1 Dimensions 8

3.2 Frequency response 9

4

4.1 Tripod or pole mount 11

4.2 Floor monitor 13

5
6

6.1 Basic stereo system using full-range systems 18

6.2 Using full-range systems as stage monitors 19

6.3 Stacking full-range-systems with subwoofers 20

7
8

Safety 4

Description 6

System overview 8

Tripod and floor monitor operation 11

Suspension 14
Recommended configurations 18

Troubleshooting 21
Technical data 22

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EKX Passive Loudspeakers

1

1.1

Safety

Important Safety Instructions

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.

8. Only use attachments/accessories specified by the manufacturer.

9. Do not expose this apparatus to dripping or splashing and ensure that no objects filled
with liquids, such as vases, are placed on this apparatus.

Old electrical and electronic appliances

Electrical or electronic devices that are no longer serviceable must be collected separately and
sent for environmentally compatible recycling (in accordance with the European Waste
Electrical and Electronic Equipment Directive).
To dispose of old electrical or electronic devices, you should use the return and collection
systems put in place in the country concerned.

1.2

Precautions

Do not use Electro-Voice loudspeakers in an environment where temperatures
are below 0°C (32°F) or exceed +40°C (104°F).

Never expose an Electro-Voice loudspeaker to rain, water, or high moisture.

Electro-Voice loudspeakers are easily capable of generating sound pressure
levels sufficient to cause permanent hearing damage to anyone within normal
coverage distance. Caution should be taken to avoid prolonged exposure to
sound pressure levels exceeding 90 dB.

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1.3

Suspension

Warning!

Suspending any object is potentially dangerous and should only be attempted by individuals
who have a thorough knowledge of the techniques and regulations of suspending objects
overhead. Electro-Voice strongly recommends all loudspeakers be suspended taking into
account all current national, federal, state, and local laws and regulations. It is the
responsibility of the installer to ensure all loudspeakers are safely installed in accordance
with all such requirements. When loudspeakers are suspended, Electro-Voice strongly
recommends the system be inspected at least once per year or as laws and regulations
require. If any sign of weakness or damage is detected, remedial action should be taken
immediately. The user is responsible for making sure the wall, ceiling, or structure is capable
of supporting all objects suspended overhead. Any hardware used to suspend a loudspeaker
not associated with Electro-Voice is the responsibility of others.

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EKX Passive Loudspeakers

2

Description

Thank you for choosing an Electro-Voice passive loudspeaker system. Please take time to
consult the manual to understand all the features built into your EV system and fully utilize its
performance capabilities.

The EKX series is the newest member of the Electro-Voice portable loudspeaker family, and
combines legendary EV sound quality and reliability with the latest technology — all in a
compact package suitable for a wide range of sound reinforcement scenarios, including
musicians/DJs and live/club/installed sound applications. The EKX series features eight (8)
models (four (4) powered and four (4) passive), including 12-inch and 15-inch two-way
models and 15-inch and 18-inch subwoofers.

EV-engineered components, Signal Synchronized Transducers (SST) waveguide design
provides precise coverage and superior sound quality at high SPLs. EV’s award-winning
industrial design — with robust wood enclosures and durable EVCoat finish — ensures that EKX
speakers look as great as they sound.

Passive EKX models deliver up to 134 dB SPL utilizing high-sensitivity transducers designed
and engineered by EV (12-inch EVS-12M woofer / 15-inch EVS-15M woofer, each coupled with
a DH-1M 1-inch titanium compression driver; 15-inch EVS-15C subwoofer / 18-inch EVS-18C
subwoofer).

EKX passive models are ideal for portable and installed applications, with lightweight and
compact 15-mm wood enclosures with internal bracing, durable EVCoat finish, eight (8) M10
threaded mounting points (full-range only), aluminum pole-mounts, and all-metal handles.

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2.1

System features

EKX-12 – 12-inch two-way passive loudspeaker system

▪ 1400 W (peak), 131 dB SPL utilizing high-sensitivity transducers designed and engineered

by EV.

▪ EV-patented Signal Synchronized Transducers (SST) waveguide design provides precise

and consistent coverage.

▪ Lightweight, compact 15-mm wood enclosure with internal bracing and durable EVCoat

finish.

▪ Eight (8) M10 threaded mounting points, aluminum pole-mounts, and all-metal handles.
▪ 90˚ x 60˚ pattern coverage for best coverage on mid-size stages and 40˚ monitor angle

with rubber feet.

EKX-15– 15-inch two-way passive loudspeaker system

▪ 1600 W (peak), 132 dB SPL utilizing high-sensitivity transducers designed and engineered

by EV.

▪ EV-patented Signal Synchronized Transducers (SST) waveguide design provides precise

and consistent coverage.

▪ Lightweight, compact 15-mm wood enclosure with internal bracing and durable EVCoat

finish.

▪ Eight (8) M10 threaded mounting points, aluminum pole-mounts, and all-metal handles.
▪ 90˚ x 60˚ pattern coverage for best coverage on mid-size stages and 40˚ monitor angle

with rubber feet.

EKX-15S – 15-inch passive subwoofer loudspeaker system

▪ 1600 W (peak), 133 dB SPL utilizing high-sensitivity transducers designed and engineered

by EV.

▪ Lightweight, compact 15-mm wood enclosure with internal bracing and durable EVCoat

finish.

▪ Large slot ports for low distortion and excellent bass extension.
▪ Metal grille reinforcement bar.
▪ M20 threaded pole mount plate.

EKX-18S – 18-inch passive subwoofer loudspeaker system

▪ 1600 W (peak), 134 dB SPL utilizing high-sensitivity transducers designed and engineered

by EV.

▪ Lightweight, compact 15-mm wood enclosure with internal bracing and durable EVCoat

finish.

▪ Large slot ports for low distortion and excellent bass extension.
▪ Two (2) metal grille reinforcement bars.
▪ M20 threaded pole mount plate.

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EKX Passive Loudspeakers

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3.1

Figure 3.1: EKX-12 dimensions

System overview

Dimensions

Figure 3.2: EKX-15 dimensions

Figure 3.3: EKX-15S dimensions

Figure 3.4: EKX-18S dimensions

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3.2

Frequency response

Figure 3.5: EKX-12 Frequency Response

Figure 3.6: EKX-15 Frequency Response

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EKX Passive Loudspeakers

Figure 3.7: EKX-15S Frequency Response

Figure 3.8: EKX-18S Frequency Response

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4

4.1

Tripod and floor monitor operation

Tripod or pole mount

EKX-12 and EKX-15 loudspeakers mount on a tripod stand or on a pole above a subwoofer.

Mounting a loudspeaker on a tripod stand

Figure 4.1: Full-Range model on a tripod stand

Caution!

Tripod is not evaluated for safety with this loudspeaker. Check the specifications of the tripod
stand to be certain it is capable of supporting the weight of the loudspeaker.

Caution!

Two (2) person lift and placement is recommended for the heavier loudspeakers. Single
person lift and placement of heavier loudspeakers could cause injury.

To mount a loudspeaker on a tripod stand, do the following:

1. Place the tripod stand on a level stable surface.

▪ Fully extend the legs on the tripod stand.
▪ Do not compromise the tripod stands structural integrity by trying to make the stand

taller.

▪ Do not attempt to suspend more than one (1) loudspeaker on a stand designed for a

single loudspeaker.

2. Using two (2) hands lift the loudspeaker.

3. Set the pole cup located on the bottom of the loudspeaker onto the pole.

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EKX Passive Loudspeakers

Mounting a loudspeaker on a pole

Figure 4.2: Full-Range/subwoofer stack with pole mount

Caution!

Two (2) person lift and placement is recommended for the heavier loudspeakers. Single
person lift and placement of heavier loudspeakers could cause injury.

To mount a loudspeaker on a pole, do the following:

1. Place the subwoofer on a level stable surface.

2. Insert the M20 threaded pole into the combo pole cup on the top of the subwoofer.

3. Turn the M20 threaded pole clockwise to secure the pole to the subwoofer.

4. Using two (2) hands lift the loudspeaker.

5. Set the pole cup located on the bottom of the loudspeaker onto the pole.

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4.2

Floor monitor

EKX-12 and EKX-15 loudspeakers may be used as a floor monitor by placing the loudspeaker
on the integral monitor angle.
To set up a loudspeaker as a floor monitor, do the following:

1. Place the loudspeaker on a level stable surface.

2. Safely route cables to prevent injury to performers, production crew, and audience
members.

Notice!

Secure cables with wire ties or tape whenever possible.

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EKX Passive Loudspeakers

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Suspension

The EKX-12 and EKX-15 enclosures have eight (8) M10 threaded points; six (6) points on top
of the enclosure and two (2) points on the bottom. Forged shoulder eyebolts rated for
overhead suspension may be used to suspend an individual loudspeaker, such as the EBK-M10
accessory.

Warning!

Suspending any object is potentially dangerous and should only be attempted by individuals
who have a thorough knowledge of the techniques and regulations of suspending objects
overhead. Electro-Voice strongly recommends all loudspeakers be suspended taking into
account all current national, federal, state, and local laws and regulations. It is the
responsibility of the installer to ensure all loudspeakers are safely installed in accordance
with all such requirements. When loudspeakers are suspended, Electro-Voice strongly
recommends the system be inspected at least once per year or as laws and regulations
require. If any sign of weakness or damage is detected, remedial action should be taken
immediately. The user is responsible for making sure the wall, ceiling, or structure is capable
of supporting all objects suspended overhead. Any hardware used to suspend a loudspeaker
not associated with Electro-Voice is the responsibility of others.

Figure 5.1: Suspension points

Prior to use, inspect the suspension points and associated hardware for any cracks,
deformations, broken welds, corrosion, missing or damaged components which could reduce
the suspension points strength. Replace any damaged hardware. Never exceed the limitations
or maximum recommended load intended for the suspension points. As an added safety
measure, it is suggested the user install an extra suspension point back to the building
structural supports. This redundant safety point should have as little slack as possible (less
than one (1) inch is preferable). Prior to each use, inspect the loudspeaker enclosures for any
cracks, deformations, missing or damaged components, which could reduce enclosure
strength. Replace any loudspeaker systems damaged or missing hardware.

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Installing the eyebolts

To install the eyebolts, do the following:

1. Remove the M10 screws from the suspension points.

2. Replace the M10 screw with the fender washer and eyebolts.

Notice!

If the eyebolts are removed reinstall the screws.
If the screws are not reinstalled air leaks occur in the enclosure, resulting in undesirable
performance.

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EKX Passive Loudspeakers

Warning!

Eyebolts must be fully seated and oriented in the plane of pull. Always use fender washers at
least 1.5 inch in diameter and 1/16 inch thick under the eyebolt to distribute the load on the
enclosure.

Figure 5.2: Eyebolt shown with and without washer

Figure 5.3: Eyebolts shown oriented in the plane of pull

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Warning!

Never exceed the limitations or maximum recommended working load for Electro-Voice
loudspeakers.
Disregarding this warning could result in serious injury or death.

en 17

Figure 5.4: Maximum working load - vertical orientation

Warning!

Never suspend EKX Series loudspeakers in a vertical column array.
Disregarding this warning could result in serious injury or death.

Figure 5.5: Loudspeaker vertical suspension

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EKX Passive Loudspeakers

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6.1

Recommended configurations

Basic stereo system using full-range systems

Basic stereo system using EKX-12’s or EKX-15’s (EKX-15 versions shown).

NL4 Pin Configuration

Pin 1+ and 1- Used
Pin 2+ and 2- Not used

Caution!

Do not exceed the maximum load rating of the amplifier.

Amplifier Load (per Output Channel)

# of Speakers Nominal Minimum

1 8 Ohms 7.2 Ohms
2 4 Ohms 3.6 Ohms
3 2.7 Ohms 2.4 Ohms
4 2 Ohms 1.8 Ohms

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6.2

Using full-range systems as stage monitors

Multiple EKX-12’s or EKX-15’s in monitor position (EKX-15 versions shown).

NL4 Pin Configuration

Pin 1+ and 1- Used
Pin 2+ and 2- Not used

Caution!

Do not exceed the maximum load rating of the amplifier.

Amplifier Load (per Output Channel)

# of Speakers Nominal Minimum

1 8 Ohms 7.2 Ohms
2 4 Ohms 3.6 Ohms
3 2.7 Ohms 2.4 Ohms
4 2 Ohms 1.8 Ohms

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EKX Passive Loudspeakers

6.3

Stacking full-range-systems with subwoofers

This configuration allows a user to increase the low frequency performance without using
additional amplifier channels (EKX-15 and EKX-18S versions shown).

NL4 Pin Configuration

Pin 1+ and 1- Used
Pin 2+ and 2- Not used

Caution!

Do not exceed the maximum load rating of the amplifier.

# of Subwoofer/Full-Range

Combinations

1 4 Ohms 3.8 Ohms
2 2 Ohms 1.9 Ohms

Amplifier Load (per Output Channel)

Nominal Minimum

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7

Problem Possible Cause(s) Action

1. No sound Amplifier Connect a known working test loudspeaker to the

2. Poor
Low-Frequency
Response

Troubleshooting

amplifier outputs. If there is no sound, verify all the
electronics are on, the signal routing is correct, the
source is active; the volume is turned up, etc.
Correct/repair/replace as necessary. If there is sound,
the problem is in the wiring.

Wiring Verify you have connected the correct cables to the

amplifier. Play something at a low level through the
amplifier. Connect the test loudspeaker in parallel with
the malfunctioning line. If the sound level is gone or is
very weak, the line has a short in it (possibly a severe
scrape, pinch, or a missed connection). Using the test
loudspeaker, move down the line and test each
connection/junction until you find the problem and
correct it. Observe proper polarity.

Loudspeakers wired
out-of-polarity

When two (2) loudspeakers are connected out of
polarity, the low frequencies will cancel each other
acoustically. Carefully observe the wire markings or
tracers on your loudspeaker wires. Verify the amplifier (-)
terminal is connected to pin 1+ of the NL4 connector and
the amplifier (-) terminal is connected to pin 1-of the NL4
connector.

3. Intermittent output
such as cracking or
distortion

4. Constant noise
such as buzzing,
hissing or humming

If these suggestions do not solve your problems, contact your nearest Electro-Voice dealer or
Electro-Voice distributor.

Faulty connection Check all connections at amplifier and loudspeakers to

ensure they are all clean and tight. If the problem
persists, check the wiring. See problem 1.

Defective source or
other electronic
device

Poor system
grounding or ground
loop

If noise is present, but no program material is playing,
evaluate each component as necessary to isolate the
problem. Most likely there is a break in the signal path.

Check and correct the system grounding, as required.

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EKX Passive Loudspeakers

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Technical data

EKX-12 and EKX-15

EKX-12 EKX-15

Frequency Response (-3 dB): 82 Hz - 18 kHz

Frequency Range (-10 dB): 55 Hz - 20 kHz

Axial Sensitivity: 95 dB

1

Maximum SPL: 131 dB peak

1

1

2

75 Hz - 18 kHz
50 Hz - 20 kHz

1

96 dB
132 dB peak

1

1

2

Rec. High-Pass Frequency: 55 Hz 50 Hz

Coverage (H x V): 90˚ x 60˚

Power Handling: 350 W continuous, 1400 W

peak

400 W continuous, 1600 W
peak

LF Transducer: EVS-12M 300 mm (12 in) EVS-15M 381 mm (15 in)

HF Transducer: DH-1M 1-inch titanium compression driver

Crossover Frequency: 1.6 kHz 1.6 kHz

Nominal Impedance: 8 Ohms

Minimum Impedance: 7.5 Ohms 7.2 Ohms

Connectors: Dual NL4

Enclosure: 15 mm plywood with EVCoat

Grille: 18 AWG steel with powdercoat

Suspension: (8) M10 threaded mounting points

Dimensions (H x W x D): 607 mm x 375 mm x 356 mm

(24 in x 15 in x 14 in)

685 mm x 432 mm x 429 mm
(27 in x 17 in x 17 in)

Net Weight: 17.4 kg (38.3 lb) 23.2 kg (51.2 lb)

Shipping Weight: 21.4 kg (47.2 lb) 28.2 kg (62.2 lb)

1. Full Space Measurement.

2. Maximum SPL is measured at 1 m using broadband pink noise at rated peak power rating.

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EKX-15S and EKX-18S

EKX-15S EKX-18S

Frequency Response (-3 dB): 60 Hz - 100 Hz

Frequency Range (-10 dB): 40 Hz - 300 Hz

Axial Sensitivity: 95 dB

1

Maximum SPL: 133 dB peak

1

1

2

Rec. High-Pass Frequency: 35 Hz 30 Hz

Power Handling: 400 W continuous, 1600 W peak

LF Transducer: EVS-15C 381 mm (15 in) EVS-18C 457 mm (18 in)

Nominal Impedance: 8 Ohms

Minimum Impedance: 7.5 Ohms 7.0 Ohms

Connectors: Dual NL4

Enclosure: 15 mm plywood with EVCoat

50 Hz - 100 Hz
35 Hz - 300 Hz

1

96 dB
134 dB peak

1

1

2

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Grille: 18 AWG steel with powdercoat

Dimensions (H x W x D): 455 in x 530 mm x 551 mm

(18 in x 21 in x 22 in)

520 mm x 606 mm x 612 mm
(20 in x 24 in x 24 in)

Net Weight: 24.9 kg (55.0 lb) 31.8 kg (70.0 lb)

Shipping Weight: 31.3 kg (69.0 lb) 40.1 kg (88.4 lb)

1. Half Space Measurement.

2. Maximum SPL is measured at 1 m using broadband pink noise at rated peak power rating.

Electro-Voice User Manual 2015.02 | 02 | F.01U.308.100

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12000 Portland Avenue South
Burnsville MN 55337
USA

www.electrovoice.com

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