K-array ninja kj50vb User Manual

REV. A ENGLISH

K

CONTENTS

m

1. Introduction p. 5

m

2. Unpacking p. 5

m

3. Symbols p. 6

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m

m

m

m

s

s

Safety p. 6

4.

5. Warranty p. 7

6. Key Features and Applications p. 7

7. Wiring p. 8

8. Coverage Patterns p. 9

8.1 Horizontal switch setting

8.2 Vertical DSP setting

8.3 Ceiling line array configuration

8.4 Horizontal line array configuration

9. Specifications p. 13

10. Service p. 14

array

p. 9
p. 11
p. 11
p. 12

p. 3

Variable Beam High Power Speaker System

1. INTRODUCTION

Congratulations on your purchase of the K-Array KJ50vb Variable Beam, High Power speaker system.
Along with its ultra-slim profile, substantial output capability and smooth frequency response over the full
vocal range, the KJ50vb has the unique capability to switch-select the Horizontal coverage pattern and to
vary the Vertical coverage through DSP control.
The KJ50vb is specifically designed to work with the K-Array KA7-7 four-channel power amplifier. The KA7-7
provides the discrete pre-set DSP control settings for speaker protection, equalization and the vertical
beamwidth and steering capabilities.
The KJ50vb speaker system is capable of operating with other power amplifiers and DSP control systems.
For these applications please contact K-Array technical support at [e-mail].

2. UNPACKING

Each K-array loudspeaker is built to the highest standard and thoroughly inspected before leaving the factory.
Carefully inspect the shipping carton before opening it, and then examine and test your new loudspeaker. If
you find any damage immediately notify the shipping company. Only the consignee may institute a claim for
damages incurred in shipping. It is suggested that you retain the original packaging so that the system can be
repacked at afuture date if necessary.
Please note that K-array and its distributors cannot accept any responsibility for damage to any returned
product through the use of non-approved packaging.

p. 5

3. SYMBOLS

!

This symbol, wherever it appears, alerts you to
important operating and maintenance istructions
in the accompanying literature. Read the manual!

Separate collection of electrical and
electronic devices.
For information about the disposal of
Wa s te E le c tr ic al a nd E le c tr o ni c
Equipment (WEEE), please refer to the
website at

www.scanning.datalogic.com

Th e item meet s al l the
e s se nt ia l "H ea l th a nd
Safety" requirements of the
r e v e l a n t E u r o p e a n
Directives.

Th is devi ce comp lies with Restrict ion o f
Hazardous Substances Directive.

This symbol alerts the user
t o t h e p r e s e n c e o f
reco m m e n d a t ions abou t
p r o d u c t ' s u s e a n d
maintenance.

4. SAFETY

It is important that loudspeaker systems are used in asafe manner.
Professional loudspeakers are capable of producing extremely high sound levels and should be used with
care. Hearing loss is cumulative and can result from levels above 90dB if people are exposed for a long
period.
Never stand close to loudspeakers driven at high level.
Ensure that the floor or stage is level and solid.
Be aware that speakers producing very high power levels can move or creep. To avoid this, place friction
material between the floor and speaker.

WARNING

practices. Secure fixings to the building structure are vital. Seek help from architects, structural engineers or
other specialists if in any doubt.

Do not operate the speaker for an extended period of time with the sound distorting. This is an indication of
malfunction, which in turn can cause heat to generate and result in a fire.

: Suspending the system should only be done by qualified personnel following safe rigging

p. 6

5. WARRANTY

K-array KJ50vb are warranted against manufacturing defects in materials or craftsmanship over a period of

years

from the date of original purchase. During the warranty period K-array will, at it's discretion, either
repair or replace products which prove to be defective provided that the product is returned in its original
packaging, shipping prepaid, to an authorised K-array service agent or distributor. K-array cannot be held
responsible for defects caused by unauthorised modifications, improper use, negligence, exposure to
inclement weather conditions, act of God or accident, or any use of this product that is not in accordance with
the instructions provided by K-array.
K-array is not liable for consequential damages.
This warranty is exclusive and no other warranty is expressed or implied.
This warranty does not affect your statutory rights.

To obtain warranty service contact your dealer or distributor for repair or placement.

6. FEATURES & APPLICATIONS

Features Applications

!

Selectable horizontal coverage

!

Variable vertical coverage from

!

TV stage monitoring

!

Live stage monitoring

2

external DSP control. +/- 15° focus area

Multiple 2" long excursion full-range drivers

!

Smooth frequency response

!

Electronically protected

!

High dynamic range capability

!

Top quality components for outstanding

!

performance

Ulra- thin frame for invisible installation

!

Available in white

!

p. 7

!

Ceiling PA or monitor installations

!

Permanent installations

!

Under balcony applications

7. WIRING

2 x parallel IN/OUT

8-PIN SPEAKON

Signal input to the KJ50vb is
vi a an 8 - pi n S pe ako n
connector with a parallel
w i r ed Th r u ou t pu t fo r
extending to additio n a l
ca binet s. Four ampli fier
channels are employed. The
recommended amplifier is
the K-Array KA7-7 four­channel amplifier, which
supplies 350 watts/channel
into a 4 ohm load. The KA7-7
h a s D S P p r e s e t s
specifically designed for the
K J 50 vb , i nc l ud in g th e
Vertical focus and steering
features. The wiring is via 2x
4-pin Speakon connectors.
See the wiring diagram.
To c o n n e c t t o o t h e r
amplifiers follow the same
p i n c o n f i g u r a t i o n .
For use with other DSP
controllers contact

array.com

tech@k-

8-pin speakon

CH1

1+

3+

CH3

4-

4+

3-

CH2

1-

2+

2-

CH4

8-pin speakon

4-pin speakon

4-pin speakon

4-pin speakon

CH 1,2 OUT

C

H

2

-

2-

4-pin speakon

CH 3,4 OUT

2

C

H

4

-

SPEAKER
INPUT

AMPLIFIER
CH. 3 & 4
SPEAKON 2

AMPLIFIER
CH. 1 & 2
SPEAKON 1

C

H

2

+

2+

C

1-

1+

C

H

1

+

C

H

4

+

2

+

-

C

1

-

1

+

C

H

3

+

H

1

-

H

3

-

p. 8

8. COVERAGE PATTERNS

8.1. HORIZONTAL SWITCH SETTING

Horiz o n t al c o v e rag e c an b e
selected using the 4 x switches
located on the back of the speaker
cabinet.
These can be set for ‘Spot’ 10° or
‘Flood’ 100°.

The s w i tches can be safe l y
activated while the speaker is
receiving signal. (Please note the
Safety Warning regarding hearing
damage).

The combined Mode allows you to
select a combination of Near and
Far Field Coverage.

MID-FAR FIELD

CH 3

FAR FIELD

CH 4

HORIZONTAL COVERAGE

FLOOD

CH 3

FLOOD

CH 4

SPOT

SPOT

NEAR FIELD

CH 1

MID-NEAR FIELD

CH 2

HORIZONTAL COVERAGE

FLOOD

SPOT

FLOOD

SPOT

CH 1

CH 2

MID-FAR FIELD

CH 3

FAR FIELD

CH 4

HORIZONTAL COVERAGE

FLOOD

CH 3

FLOOD

CH 4

SPOT

SPOT

NEAR FIELD

CH 1

MID-NEAR FIELD

CH 2

HORIZONTAL COVERAGE

FLOOD

SPOT

FLOOD

SPOT

p. 9

CH 1

CH 2

MID-FAR FIELD

CH 3

CH 4

FAR FIELD

HORIZONTAL COVERAGE

FLOOD

SPOT

CH 3

FLOOD

SPOT

CH 4

p. 10

CH 1

CH 2

NEAR FIELD

MID-NEAR FIELD

HORIZONTAL COVERAGE

FLOOD

FLOOD

SPOT

SPOT

CH 1

CH 2

8.2. VERTICAL DSP SETTING

70° 10°

Vertical coverage is controlled
by DSP settings in the KA7-7
amplifier from 70° ‘ ’ to 10°
‘ ’

Narrow

In ‘ ’ Mode the Vertical

Narrow

focus can be adjustedby +/- 15°

Wide

8.3. CEILING LINE ARRAY CONFIGURATION

A Ceiling Line Array Configuration is a unique
application of the KJ50vb.

Because of its very thin profile the KJ50vb is
perfectly suited for low-ceilingvenues.

The vertical steering capability means that the
speakers do not need to be located directly
overhead but can be positioned off the stage or
dance floor.

p. 11

8.4. HORIZONTAL LINE ARRAY CONFIGURATION

The Horizontal Line Array Configuration is
another unique application ofthe KJ50vb.

Up to four speakers can be driven and controlled
by a single KA7-7amplifier.

The cabinets should be positioned together and
switched to Horizontal t’position.‘Spo

CH. 1 near field

CH. 2 mid- near field

CH. 3 mid-far field

CH. 4 far field

Amp. Speakon 1
Ch.s 1 & 2

Amp. Speakon 2
Ch.s 3 & 4

p. 12

!

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IFIER

9. SPECIFICATIONS

KJ50VB

Acoustics

Speakers power handling 4 x 150 W

Max power 4 x 200 W

Impedance

Frequency range 150 Hz - 20 KHz

SPL 1W/1mt 98 dB

Maximum SPL 124 dB continuous - 130 dB peak

Coverage

Horizontal selectable : Spot (10°) / Flood (100°)

Vertical DSP dependent 10°’Narrow’ to 70° ‘Wide’, +/- 15° variable focus in ‘Narrow’ mode

Crossover

Type External Crossover required

Frequency 150 Hz, 24 dB/oct suggested minimum

Transducers

Full-range 36 x 2” neodymium magnet 0.75” VC long-excursion speakers

Audio Input

Connectors

Wiring

(1+ 1-) =

(3+ 3-) = (4+ 4-) =

1 x 8-pin Speakon NL8 input
1 x 8-pin Speakon NL8 Thru

(2+ 2-) =

(AES)

1

2

Selection Switch

Coverage

Type

(with dedicated preset)

Physical

Dimensions 50.3 x 43.3 x 6.1 cm (19.80” x 17.05” x 2.40”)

Weight 10 Kg (22.5 lbs)

Notes for data

1. Maximum RMS applicable power for a musical signal, the reference signal is the one proposed by EIAJ standard.

2. Measured @4 mt then scaled @1 mt

New materials and design are introduced into existing products without previous notice. Present systems may differ in some respects

from those presented in this brochure.

p. 13

10. SERVICE

To obtain service:

1) Contact the official K-array distributor in your country that direct you to the service centre.

2) If you are calling for the service, have the serial number(s) of the unit(s) at hand for reference. Ask for
Customer Service, and be prepared to describe the problem clearly and completely.

3) If the problem cannot be resolved over the phone, you must return the unit for service.

4) You will be given an RA (Return Authorization) number for job tracking. Refer to this number on shipping
materials and in all correspondence concerning the repair. Shipping charges are the responsibility of the
purchaser.

Any attempt to modify or replace components of the device will invalidate your warranty. Service must
be performed by an authorized K-array service center.

Cleaning:

• Clean the product enclosures using only a soft, dry cloth.

• Do not use any solvents, chemicals, or cleaning solutions containing alcohol, ammonia, or abrasives.

• Do not use any sprays near the product or allow liquids to spill into any openings.

p. 14

Approval

K-array declares that this device is in compliance

with the applicable CE standards and regulations.

Before putting the device into operation, please

ob s er ve t h e re s pe ct ive c o unt r y- sp eci f ic

regulations!

WEEE

Please dispose of this product at the end of its

operational lifetime by bringing it to your local

collection point or recycling centre for such

equipment.

Th e co nte n ts of th is ma nua l ar e fur nis hed for

informational purpose only. Hp Sound Equipment s.r.l.

assumes no responsability for any errors or inaccuracies

that may appear in this manual.

Hp Sound Equipment s.r.l. reserves the right to make

modifications without prior notice.

Viale Roma 7 /i 5 00 37 San Pier o a Si ev e (F irenze) I ta ly - t el [phone] fax e-ma il : in fo@k-ar ra y.c om[phone]

HP Sound Equ ip me nt s .r.l. www.k -array.com

p. 15

array

K

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by

HP Sound Equipment s.r.l.

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