ProAudio VT8 User manual

VT8
Manual 1.0 EN
VT8
Vertical Array
Fullrange Loudspeaker

2
Information on the manual:
Manual
VT8 Vertical Array
Fullrange Loudspeaker Version 1.0 EN
ProAudio Technology, July 2018
Copyright © ProAudio Technology GmbH
Items delivered:
• High/Midrange Loudspeaker
• Manual
Contents:
• Symbols....................................... 2
• General Safety Precautions and Care ................ 3
• Description and Use .............................. 4
• Operation on System Amplifiers ..................... 4
• Operating Modes ...............................5 – 9
• Drawings / Dimensions ........................... 10
• Technical Specifications ........................... 11
• Disposal....................................... 11
• Declaration of Conformity ................. 11
Dear user,
first let us express our sincere thanks for your decision and trust
you have put in us.
On the following pages you’ll find important information and
technical advice regarding the correct use and care of the
loudspeaker.
Please read this manual thoroughly before initial use and strictly
observe all safety precautions.
The manual is an essential part of the product.
Please keep the manual in a safe place to have it on hand in case
of questions or doubts.
If you lend or sell the product to another person, you need to
make sure the manual is supplied with the product.
Please contact us if you need more copies of this manual.
ProAudio Technology GmbH
Gruenstrasse 13
79232 Hugstetten
Germany
Phone: [phone] / 94 23 23 - 0
Fax: [phone] / 94 23 23 - 9
[e-mail]
www.proaudio-technology.de
Symbols:
Hazardous
voltage
Caution
danger
Strictly
observe

VT8
3
General Safety Instructions:
Professional loudspeakers can produce harmful sound pressure
levels. SPLs above 95 dB can permanently damage your hearing.
Observe the relevant guidelines regarding working safety and
health protection.
To avoid physical and personal damages due to loudspeakers
dropping or tumbling over, please make sure that the speakers
stand safely on a firm ground.
Vertically stacked loudspeakers must be secured sufficiently with
tension belts against unintentional movement. The rubber feet
of the speakers must lock into the appropriate sockets on the
opposite side.
Check all cabinets and accessories regularly for wear, especially
the flying hardware. Replace them if necessary. Make sure that
during operation on spacer tubes no persons are standing close
to the loudspeakers.
Use only accessory parts specified by ProAudio Technology or
original accessory parts from ProAudio Technology.
Loudspeakers always produce a magnetic field. Make sure
that during transport, setup and disassembly and also during
operation of the loudspeakers no objects (e.g. laptops, harddisk
drives, credit cards and the likes) get close to the speakers which
could be damaged by the magnetic field. People who have a
pacemaker must keep a safety clearance.
The recommended minimum safety clearance is 1 m.
Do not set up the loudspeakers in places where they are
permanently exposed to humidity, dust, dirt or direct sunlight.
Care:
Wipe the surface of loudspeakers only with a damp cloth and
pure water.
In case of heavy pollution, repeat the above procedure several
times if necessary.
Do not use any chemical additives or aggressive detergents, as
they may harm and damage the surfaces.

4
Note:
Using only one 4-pole cable,
2-channel combinations of
several VT8s and VS15 / VS18 /
VS28 / SW12 / SW18 or SW28
subwoofers can be connected.
Description:
The VT8is a vertical array fullrange loudspeaker that uses a
ported 2-way design with a built-in passive frequency crossover.
It is fitted with one 8“ cone drivers with a water-repellent coating
which are arranged symmetrically around the horn-loaded 1.4“
HF driver.
The horizontal radiation angle is 90 degrees.
The fully integrated three-point rigging hardware enables vertical
angles between 0 and 8 degrees in continuous 1-degree steps
and vertical array lengths of up to 16 VT8 loudspeakers.
The loudspeaker must be run on ProAudio Technology system
amplifiers exclusively.
Different setups allow a practice-oriented operation with or
without VS15/ VS18 / VS28 / SW12 / SW18 or SW28 subwoofers.
Enclosure:
The cabinet is made from 15 mm birch plywood and coated with
a robust two-component textured paint. We have integrated four
recessed handles.
The three-point flying hardware is fully integrated without any
protruding or losable parts.
A black, water-repellent acoustic foam is placed behind the front
grille.
Connection:
Connection is made through two rear Neutrik NL4 SpeakON
sockets wired in parallel.
Pin pair 1 is connected to the speakers.
Pin pair 2 may be used for connecting VS15 / VS18 / VS28 / SW18
/ SW28 or SW12 subwoofers (slave-through option).
Operation on System Amplifiers:
The software for amplifier configuration will display help texts for
the individual loudspeakers. Select a setup which contains the
name “VT8“.
With the 8.4-DSP system amplifier up to four VT8s can be driven
per channel.
On the 20.4-DSP system amplifier up to eight VT8s can be driven
per channel.
Details will be shown by the software upon entering the number
of VT8 loudspeakers per channel.
Note:
Only run the VT8 loudspeaker
on system amplifiers using the
available setups. Otherwise there
may be a risk of damage and
insufficient performance.

VT8
5
a
8.4-DSP
b
20.4-DSP
Note:
11 VT16s together
with a FRAME16-VT16
can be flown on a
250 kg chain hoist
Operation modes
8.4-DSP
Three tops are each connected by a single 4-pole speaker cable.
The tops are driven in groups of three by one amp channel.
So altogether four amp channels are in use.
Power demand: 1 x 230 V / 16 A
20.4-DSP
Six tops are each connected by a single 4-pole speaker cable.
The tops are driven in groups of six by one amp channel.
So altogether four amp channels are in use.
Power demand: 1 x 230 V / 16 A

6
c
d
20.4-DSP
20.4-DSP
Rear
Rear
20.4-DSP
The three subwoofers and the three tops per side are all connected by
4-pole speaker cables.
Pin pair 2 is used for wiring the subwoofers.
Three subwoofers and three tops are each driven by one amp channel in
stereo mode.
The six tops are driven by another two amp channels in stereo mode.
So altogether four amp channels are in use.
Power demand: 1 x 230 V / 16 A
20.4-DSP
The three subwoofers and the three tops per side are all connected by
4-pole speaker cables.
The six subwoofers are set up in mono cardioid mode and driven by two
amp channels.
The six tops are driven by another two amp channels in stereo mode.
So altogether four amp channels are in use.
Power demand: 1 x 230 V / 16 A

VT8
7
e
20.4-DSP
f
20.4-DSP
Rear
Rear
Rear
Rear
20.4-DSP
20.4-DSP
The four subwoofers and eight tops per side are all connected by 4-pole
speaker cables.
Pin pair 2 is used for wiring the subwoofers.
The two subwoofers and the eight tops per side are each driven by two
amp channels.
Thus four amp channels are in use.
Power demand: 1 x 230 V / 16 A
20.4-DSP
The six subwoofers and the eight tops per side are all connected by 4-pole
speaker cables.
The six subwoofers per side are set up in cardioid mode and driven by two
amp channels.
The eight tops are driven by another two amp channels.
So altogether eight amp channels are required.
Power demand: 2 x 230 V / 16 A

8
g
20.4-DSP
20.4-DSP
The two subwoofers and six tops per side are all connected by 4-pole
speaker cables.
Pin pair 2 is used for wiring the subwoofers.
The two subwoofers and the six tops per side are each driven by two amp
channels.
Thus four amp channels are in use.
Power demand: 1 x 230 V / 16 A
Operation Modes VT8 with SW28

VT8
9
h
20.4-DSP
Rear Rear
20.4-DSP
20.4-DSP
The three subwoofers and the eight tops per side are all connected by
4-pole speaker cables.
The three subwoofers per side are set up in cardioid mode and driven by
two amp channels.
The eight tops are driven by another two channels.
So altogether eight amp channels are required.
Power demand: 2 x 230 V / 16 A

10
Drawings / Dimensions:

VT8
11
Technical Specifications:
Drivers 1x 8" neodym
1x 1.4" neodym
Power handling (RMS / programme) 500 W / 1,000 W
Impedance 12 ohms
Frequency response 50 – 18,500 Hz (via system amplifier)
Max. SPL (1 m, free field) 133 dB peak (via system amplifier)
Connectors 2 x SpeakON NL4 on rear side:
Speaker PIN 1+/1–, PIN 2+/2– parallel
Pin wiring rear NL4 • PIN 1+ / 1– : drivers
• PIN 2+ / 2– : optional tap for subwoofer
Dimensions (H x W x D) 245 x 580 x 440 / 9.7” x 22.8” x 17.3”
Weight 21 kg / 46.3 lbs.
Colour black
Accessories • DOL-VT8 Transport dolly for VT8 and FRAME16-VT8
• FRAME16-VT8 Flugrahmen for up to 16 VT8
• RA4-S System amp rack w. sliding doors, 4 RU
• RA10-S System amp rack w. sliding doors, 10 RU
• VS15 System subwoofer
• SW18 System subwoofer
• SW28 System subwoofer
• PAB-88 Connection panel for 4-channel system amplifiers
Options • Installation version w/o handles, rubber feet and attachments
• Paint finish in RAL colours
• 5 years warranty
• Made & engineered in Germany
Disposal:
Electric and electronic appliances must be disposed of separately
from domestic waste or public collecting points. The current
regulations must be observed and adhered to.
EU Conformity Declaration:
This declaration applies to the VT16 loudspeaker from the
manufacturing company ProAudio Technology GmbH.
Included herein are all production copies of this type as long as no
subsequent design or electromechanical modifications have been
performed on them.
It is herewith confirmed that the mentioned products comply with
the protection requirements of the relevant EU directives.
If you have any questions, please contact ProAudio Technology.

VT8
ProAudio Technology GmbH
Gruenstrasse 13
D-79232 Hugstetten
Germany
Phone: [phone] / 94 23 23 - 0
Fax: [phone] / 94 23 23 - 9
[e-mail]
www.proaudio-technology.de
www.facebook.com/ProAudioTechnologyGermany
Manual VT8 Vertical Array Fullrange Loudspeaker – 2018-07 EN