Martin audio ICT300, M1 user manual

CONTENTS (ENGLISH) Page No

1 INTRODUCTION 2
2 UNPACKING 2
3 M1 MAINS CONNECTION 3
4 SAFETY FIRST 3

4.1 Tripod mounting 4

4.2 Stacking 4

4.3 Rigging and suspension 4
5 M1 CONNECTIONS 5
6 M1 OPERATION 5
7 ICT300 COMPACT LOUDSPEAKER 6
8 AMPLIFIER POWER 6

8.1 Connecting to an amplifier 6

8.2 Cable lengths 7
9 WARRANTY 7
10 TECHNICAL SPECIFICATIONS 8

Martin Audio – M1 and ICT300

The Martin Experience

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MARTIN AUDIO

LONDON

1 INTRODUCTION

Thank you for purchasing a Martin Audio M1 system controller and ICT300
compact loudspeaker system. The M1 is used to optimise the performance
of the ICT300, whether it is used as a stand-alone system or with additional
sub-bass enclosures.

2 UNPACKING

Every Martin product is built to the highest standard and thoroughly
inspected before it leaves the factory. After unpacking the unit, examine it
carefully for any signs of transit damage and inform your dealer if any such
damage is found. It is suggested that you retain the original packaging so
that the unit can be repacked at a future date if necessary.

Please note that Martin Audio and its distributors cannot accept
responsibility for damage to any returned product through the use of non­approved packaging.

Martin Audio – M1 and ICT300

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2

This equipment conforms to the requirements of the
EMC Directive 89/336/EEC, amended by 92/31/EEC
and 93/68/EEC and the requirements of the Low
Voltage Directive 73/23/EEC, amended by 93/68/EEC.

Standards Applied EMC Emission EN55103-1:1996

Immunity EN55103-2:1996

Electrical Safety EN60065:1993 (ICT300)

EN60065:1998 (M1)

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3 MAINS CONNECTION

The M1 is supplied with a captive mains lead with an integral U.K. BS1363
3 pin plug. Should the moulded plug be removed and another plug

substituted the cable must be re-wired as below.

GREEN/YELLOW - EARTH
BROWN - LIVE
BLUE - NEUTRAL

W

ARNING: The M1 Controller must always be operated with the mains

safety earth connected.

The M1 is supplied from the factory in either 100-120V or
200-240V versions
Mains voltage tolerance ±10% on each setting

Fuse: - type ‘T’ semi-delay 200mA(L) 100-120V
Fuse: - type ‘T’ semi-delay 100mA(L) 220-240V

NO ATTEMPT SHOULD BE MADE BY THE USER TO CHANGE THE
MAINS OPERATING VOLTAGE FROM THAT SUPPLIED, REFER TO
QUALIFIED PERSONNEL ONLY.

4 SAFETY FIRST

It is important that loudspeaker systems are used in a safe manner.
Please take some time to review the following points concerning safe use
of ICT300 compact loudspeakers.

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 a high level.

Martin Audio – M1 and ICT300

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3

This equipment must be earthed.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

DO NOT EXPOSE TO RAIN

OR MOISTURE

It should not be necessary to remove any protective earth or signal cable
shield connections.

!

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4.1 Tripod mounting

The ICT300 incorporates a pole mounting socket to facilitate mounting on
tripod stands. When using stands, the following precautions are advised:

Ensure that the stand will support the weight of the speaker by checking
the stand manufacturers rating.

Make sure that the stand is placed on a level surface and that its legs are
fully extended.

Do not place more than one speaker on each stand.
Run cables so that they do not present a trip hazard which could pull the

speaker over.
When used outdoors in the wind, it may be necessary to add some weight

to the base of the stand.
When using a pole mount with a sub-bass system, observe similar

precautions.

4.2 Stacking

Ensure that the floor or stage is level and solid.
Do not stack speakers too high outdoors where winds could topple the

stack.
Be aware that speakers producing very high power levels can move or

creep. To avoid this, place friction material between the floor and speaker
and between each speaker.

4.3 Rigging and suspension

W

ARNING: Suspending the system should only be done by qualified
personnel following safe rigging practices. Secure fixings to the
building structure are vital. Seek help from architects, structural
engineers or other specialists if in any doubt.

Martin Audio – M1 and ICT300

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5 M1 CONNECTIONS

The M1 should be connected immediately preceding the power amplifier(s)
and after any such devices as preamps, mixing desks or other equalisers.

Input connections, which are balanced, are via combination XLR type
sockets and TRS (tip/ring/sleeve) "stereo" jack sockets, wired as follows:

Pin 1 / jack sleeve = Signal 0V
Pin 2 / jack tip = Signal +(hot)
Pin 3 / jack ring = Signal -(cold)

If driving the M1 from an unbalanced source, mono jack plugs may be
used. Under some conditions, this may result in a hum loop. If so,
alternative connections, via an XLR type plug or a TRS jack should be
used, wired as follows.

Pin 1 / jack sleeve = Not connected
Pin 2 / jack tip = Cable inner (signal)
Pin 3 / jack ring = Cable screen (ground)

M1 outputs are pseudo balanced on stereo jack sockets.
Pin 1 / jack sleeve = Signal 0V

Pin 2 / jack tip = Signal + (hot)
Pin 3 / jack ring = Signal - (cold)

6 M1 OPERATION

The M1 is a 2-channel system controller which is recommended for use
with the Martin Audio ICT300 compact loudspeaker system used either full­range or with additional sub-bass.

When using an ICT300 on its own, set the mode switch on the rear of the
M1 to full-range. If additional bass enclosures are used, set the mode
switch to sub-bass and drive the bass amplifiers from the sub-bass output
jack. In this mode, the M1 functions as a 120Hz electronic crossover with a
single mono bass output. If the bass amplifiers do not have "input link"
sockets or switches, it may be necessary to make up a "one into two" jack
lead to parallel the amplifier inputs when using more than one amplifier
channel to drive bass enclosures.

Martin Audio – M1 and ICT300

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7 ICT300 COMPACT LOUDSPEAKER

The ICT300 is a compact full-range loudspeaker which has been
engineered to combine high level reproduction with a wide bandwidth,
accuracy and maximum intelligibility. It features twin 10" (250mm) drivers
horizontally aligned in a unique 2-way configuration utilising patented Pro
ICT™ (Inductively Coupled Transducer) technology. This revolutionary
principle uses the magnetic field generated by the 10" (250mm) low
frequency driver's voice coil to inductively drive a 2" (50mm) aluminium HF
diaphragm located at the centre of the device. Because the HF diaphragm
is energised by induction, it has no voice coil of its own to burn out. In
addition, although each ICT™ unit is a true two-way device, there is no
separate crossover network, since the crossover function is inherent in the
ICT™ principle.

8 AMPLIFIER POWER

The ICT300 is designed to be used with a professional standard power
amplifier capable of producing 400-550 watts per channel into 4 ohms.

Care should be taken to avoid switch-on surges which can result in
momentary power peaks in excess of specified ratings. When powering up
a sound system, it is important to switch on the amplifiers after the mixer
and electronic crossover etc. have stabilised. When powering down the
system, reverse the sequence and switch off the amplifiers first.

8.1 Connecting to an amplifier

The panel at the rear of the ICT300 is fitted with two Neutrik Speakon NL4
connectors wired in parallel as follows:

PIN 1- -ve
PIN 1+ +ve
PIN 2- N/C
PIN 2+ N/C

Martin Audio – M1 and ICT300

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8.2 Cable lengths

When connecting an ICT300 to an amplifier, it is recommended that the
return resistance of the cable used is less than one tenth of the nominal
impedance of the system or systems in parallel. The table below gives an
indication of the maximum permissible cable runs for various conductor
cross-sectional areas driving 4 and 8 ohm loads.

Maxim

um Cable Run

4 ohms 8 ohms

Conductor CSA

(2 x ICT300) (1 x ICT300)

1.0mm

2

11m 22m

1.5mm

2

17m 34m

2.0mm

2

22m 44m

2.5mm

2

29m 58m

4.0mm

2

44m 88m

6.0mm

2

66m 132m

To work out the actual return resistance R for cable run of length L, with each
conductor having cross-sectional area A, use the formula:

R = 2 x 0.017 x L

A

9 WARRANTY

Martin Audio ICT300 Compact Loudspeakers are warranted against
manufacturing defects in materials or craftsmanship over a period of 5 years
from the date of original purchase. The M1 System Controller is warranted
against manufacturing defects in materials or craftsmanship over a period of
1 year from the date of original purchase. During the warranty period Martin
Audio 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 Martin Audio service agent or distributor.

Martin Audio Ltd. 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 Martin Audio.
Martin Audio 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.

Martin Audio – M1 and ICT300

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10 TECHNICAL SPECIFICATIONS

M1

GAIN 0dB @ 1kHz
HUM & NOISE -90dBm 20Hz-20kHz
INPUTS Left & right, 2 x combined XLR/1/4" TRS

jack, electronically balanced

OUTPUTS Left, right & sub-bass, 3 x 1/4" jack,

pseudo balanced
MAXIMUM INPUT/OUTPUT +20dBu
ELECTRONIC CROSSOVER FREQUENCY

120Hz
FRONT PANEL INDICATORS Full-range, sub-bass LED's
REAR PANEL CONTROLS Full-range/sub-bass switch
MAINS SUPPLY 100-120V or 200-240V AC 50/60Hz
DIMENSIONS (W) 483mm x (H) 44mm x (D) 102 mm

(W) 19ins x (H) 1.75ins x (D) 4.0ins
WEIGHT 1.2kg (2.6lbs)
SHIPPING DIMENSIONS (W) 545mm x (D) 120mm x (H) 235mm

(W) 21.5ins x (D) 4.7ins x (H) 9.3ins
SHIPPING WEIGHT 1.8 Kg (3.9 lbs)

ICT300

TYPE Twin-driver ICT™
FREQUENCY RANGE 55Hz-18kHz (with equaliser)
DRIVERS 2 x 10" (250mm) full-range ICT™
POWER 300W AES, 1200W peak
RECOMMENDED AMPLIFIER 400-550W into 4 ohms
SENSITIVITY 96dB 1W @ 1m
MAXIMUM SPL 119dB continuous, 125dB peak
IMPEDANCE 8 ohms nominal
DISPERSION (-6dB POINTS) 100 degs horizontal x 40 degs vertical
ENCLOSURE Multi-laminate birch ply
FINISH Textured paint
PROTECTIVE GRILLE Perforated steel with 48% free air flow
CONNECTORS 2 x Neutrik NL4
FITTINGS 8 x M8 inserts

1 x pole mount socket
DIMENSIONS (W) 565mm x (H) 325mm x (D) 325mm

(W) 22.25ins x (H) 12.75ins x (D) 12.75ins
WEIGHT 16kg (35lbs)
SHIPPING DIMENSIONS (W) 680mm x (H) 390mm x (D) 450mm

(W) 26.8ins x (H) 15.4ins x (D) 17.7ins
SHIPPING WEIGHT 19kg (41.9lbs)

Due to our policy of continuous product improvement all specifications are subject to change without notice.

Martin Audio – M1 and ICT300

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M1 System Controller &
ICT300 Compact Loudspeaker

Century Point, Halifax Road, Cressex Business Park, High Wycombe, Buckinghamshire HP12 3SL, England.

Telephone: [phone] Facsimile: [phone]

Web: www.martin-audio.com E-mail: [e-mail]

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MARTIN AUDIO

LONDON

The Martin Experience

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M1 System Controller &
ICT300 Compact Loudspeaker

User’s Guide

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MARTIN AUDIO

LONDON