ProAudio MT12 User manual

MT12
Manual
MT12
Multi-purpose Speaker

2
Dear user,
first of all we would like to say a big thank you for your decision
and the confidence you were thus placing in us.
On the following pages you will find important information and
technical instructions regarding the correct usage and care of the
loudspeaker.
Pleae read this manual carefully before initial operation and do
observe all safety instructions.
This manual is an essential part of the product. Please keep the
manual in a safe place for future reference to have it at hand,
should any questions or uncertainties arise.
If you pass on the product to a third party, among other things,
you need to make sure that the manual is enclosed with the
product.
In case you might need additional manuals, we ask you to contact
us.
ProAudio Technology GmbH
Hermann-Schwer-Strasse 3
78048 Villingen-Schwenningen
Germany
Phone: [phone] / 99 81 96 - 0
Fax: [phone] / 99 81 96 - 9
[e-mail]
www.proaudio-technology.de
Symbols:
Hazardous
voltage
Caution
danger
Strictly
observe
Information on the manual:
Manual
MT12 Multi-purpose Speaker Version 1.0 ENG
ProAudio Technology Last update November 2012
Copyright © ProAudio Technology GmbH 2012
Items delivered:
• Multi-purpose Speaker
• Manual
Contents:
• Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• General Safety and Care Instructions . . . . . . . . . . . . . . . . . 3
• Description and Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
• Operation on System Amplifiers . . . . . . . . . . . . . . . . . . . . . 4
• Operating Modes
[1] MT12 Fullrange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
[2] MT12 with Subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . 6
[3] MT12 as Nearfield Speaker . . . . . . . . . . . . . . . . . . . . . 9
• Drawings / Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
• Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
• Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
• Declaration of Conformity . . . . . . . . . . . . . . . . . 11

MT12
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.
Check all cabinets and accessories regularly for wear, especially
the flying rails and the tripod flange. Replace them if necessary.
Make sure that during operation on spacer tubes, no persons will
stand 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 (such as laptops,
harddisk drives, credit cards and the likes) get close to the
speakers which could become damaged by the magnetic field.
People who have a pacemaker must keep a safety clearance.
The minimum recommended safety clearance is 1 m.
Do not set up the loudspeakers in places where they are
permanently exposed to moisture, 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
these may harm and damage the surfaces.

4
Note:
Only one 4-pole cable is
required to connect 2-channel
configurations of several MT12
and SW18 / SW28 subwoofers.
Only one 4-pole cable is required
to connect two e.g. monitor paths
elegantly without additional
reversible cables.
Description:
The MT12 is a universal 2-way multi-purpose loudspeaker with a
built-in passive frequency crossover. It is equipped with one 12“
cone chassis with a water-repellent coating and one 1.4“ high-
frequency driver. The directivity characteristic is 80° x 60° (h x v).
This loudspeaker is to be used exclusively with the
ProAudio Technology system amplifiers.
Different setups enable a practice-oriented usage with or without
SW18 / SW28 subwoofers.
Alternatively Hoellstern DELTA series amplifiers with built-in DSP
may be used. Should you have any questions, please contact
ProAudio Technology regarding this subject.
Cabinet:
The cabinet is made of 15 mm birch multiply wood and coated
with a robust 2-component texture paint finish. A 45° corner
allows it to be used as a monitor speaker. It is fitted with two
handles, eight stacking feet and a tripod flange. Two flying rails
and six M10 flying points complete the list of features. Behind the
front grille is a layer of black acoustic foam.
Connection:
The connections are made on the rear side through a total of four
Neutrik NL4 SpeakON sockets which are angled in two directions
by 45 degrees relative to the rear cabinet wall. Three of the
four sockets are wired in parallel with each other. Pin pair 1 is
connected to the speaker chassis. On the fourth SpeakON socket,
which is marked correspondingly and rotated by 180 degrees, the
pins have been reversed. Pin pair 2 is connected to the speaker.
Combinations of MT12 and subwoofers, which are fed via a 4-
pole lead, must be connected only to the non-marked SpeakON
sockets!
Never use the marked SpeakON socket that is arranged rotated
by 180 degrees.
Operation on System Amplifiers:
The amplifier configuration software will display help texts for the
individual loudspeakers. Select a setup which contains the name
“MT12“.
On the DELTA8.4-DSP system amplifier up to two MT12 can be
driven per channel.
On the DELTA14.4-DSP system amplifier a maximum of four
MT12 can be driven per channel.
Details will be shown by the software upon entering the number
of MT12 speakers per channel.
Note:
Use the MT12 loudspeaker only
on system amplifiers with the
available setups. Otherwise there
may be a risk of damage and
inadequate performance.

MT12
5
DELTA 8.4-DSP
b
a
1 4
2 3
DELTA 8.4-DSP
1 4
2 3
Operation modes
The four loudspeakers are wired using 4-pole speaker cables.
Each amplifier channel will drive one speaker.
Four amplifier channels will be assigned.
The eight loudspeakers are wired using 4-pole speaker cables.
Each amplifier channel will drive two speakers.
Four amplifier channels will be assigned.
[1] MT12:

6
c
DELTA 8.4-DSP
d
The four loudspeakers are wired using 4-pole speaker cables.
The two speakers (1) and the two speakers (2) will each be driven by one
dedicated amplifier channel.
Two amplifier channels will be assigned. Channels three and four may be
used to set up an identical configuration.
The subwoofer is wired together with one top using 4-pole speaker cables.
Likewise, the second top is wired using a 4-pole speaker cable. Each
amplifier channel will drive one speaker. The two tops will be run in stereo,
the subwoofer in mono mode.
Three amplifier channels will be assigned.
[2] MT12 with Subwoofer:
DELTA 8.4-DSP
1 2

MT12
7
e
DELTA 8.4-DSP
f
One subwoofer and two tops on either side are wired using 4-pole speaker
cables. Each amplifier channel will drive one subwoofer and two tops in
stereo mode.
Four amplifier channels will be assigned.
Two subwoofers and one top on either side are wired using 4-pole speaker
cables. Each amplifier channel will drive two subwoofers and one top in
stereo mode.
Four amplifier channels will be assigned.
DELTA 8.4-DSP

8
g
h
DELTA 8.4-DSP
The subwoofer is wired together with one top using 4-pole speaker cables.
Likewise, the second top and the fullrange speaker are wired using 4-pole
speaker cables.
Each amplifier channel will drive one speaker.
Three amplifier channels will be assigned for the PA.
The two tops are run in stereo, the subwoofer in mono mode. The fourth
amplifier channel may be used separately e.g. for monitoring or as a delay
line. In total four amplifier channels will be assigned.
One subwoofer and two tops are wired on either side using 4-pole speaker
cables. Likewise, the two tops and the two fullrange speakers are wired
using 4-pole speaker cables.
Each amplifier channel will drive one subwoofer plus two tops in stereo
mode.
Three amplifier channels will be assigned for the PA.
The fourth amplifier channel may be used separately e.g. for monitoring or as
a delay line. In total four amplifier channels will be assigned.
DELTA 8.4-DSP

MT12
9
Rear
Rear
DELTA 14.4-DSP
Rear
Rear
DELTA 14.4-DSP
h
DELTA 14.4-DSP
The six subwoofers per side are wired using 4-pole speaker cables. The nearfield
speakers are connected to the amplifier with 4-pole speaker cables. The two tops
are each connected to the pin-reversed socket of the nearfield speaker using
4-pole speaker cables.
The six subwoofers are driven by two amplifier channels in mono cardioid mode.
The two tops are both driven by one amplifier channel. The nearfield speaker is
also driven by one amplifier channel.
The entire system is then set for stereo operation.
Four amplifier channels will be assigned per side.
[3] MT12 as Nearfield Speaker

10
585
380
330
Drawings / Dimensions:

MT12
11
Technical Specifications:
Drivers 1 x 12" neodymium
1 x 1.4" neodymium
Power handling (RMS / programme) 400 W / 800 W
Impedance 8 ohms
Frequency response 60 – 20,000 Hz (via system amplifier)
Max. SPL (1 m, free field) 131 dB peak (via system amplifier)
Directivity pattern (h x v) 80 x 60°
Connections 4 x SpeakON NL4 on rear side:
• 3 x speaker PIN 1+ / 1–
• 1 x speaker PIN 2+ / 2–
Pin assignment NL4 on rear side • Sockets 1- 3:
PIN 1+ / 1– speaker / PIN 2+/– optional for subwoofer
• “Pin reversed“ socket: PIN 2+/2– speaker
Dimensions (H x W x D) 585 x 380 x 330 mm / 23" x 15" x 13"
Weight 21 kg / 46 lbs
Colour black
Accessories • FB-MT Flying frame – suitable for MT10 and MT12
• BAG-MT12 Carrying bag with accessory compartment for
one MT12
• CASE-MT10 Case for two MT12, flying frame and accessories
• AD-MT Screw adapter, with 16 mm TV spigot
• Triggerclamp Truss holder, SWL 200 kg
• DELTA 8.4-DSP System amplifier
• DELTA 14.4-DSP System amplifier
Options • Installation version w/o handles, rubber feet and attachments
• Lacquer finish in RAL colours
Disposal:
The disposal of electric and electronic appliances must be done
independently from domestic waste or public collecting points. The
relevant regulations must be observed and adhered to.
EU Conformity Declaration:
This declaration is valid for the MT12 loudspeaker of the
manufacturing company ProAudio Technology GmbH.
Included herein are all production items of the same type, as long
as they have not been modified subsequently in structural or
electromechanical respect.
It is herewith confirmed that the mentioned products comply with
the protection requirements of the relevant EU directives.
If you have any questions, we kindly ask you to get in touch with
ProAudio Technology.

MT12
ProAudio Technology GmbH
Hermann-Schwer-Strasse 3
78048 Villingen-Schwenningen
Germany
Phone: [phone] / 99 81 96 - 0
Fax: [phone] / 99 81 96 - 9
[e-mail]
www.proaudio-technology.de
Manual MT12 Multi-purpose speaker – 2012-11 ENG