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Martin Audio – MA1.3s Amplifier

E

NGLISH

2

2

 

 APPROVALS

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.

Standard Applied

EMC Emission

EN55103-1, E3

EMC Immunity

EN55103-2, E3, with S/N below 1% at normal operation level.

Electrical Safety

EN60065, Class I

3

 

WARNINGS

3.1 

Explanation of graphical symbols

The lightning symbol within a triangle is

intended to alert the user to the presence of

lethal voltages within the amplifier that are of
sufficient magnitude to constitute a risk of electric
shock to humans.

The exclamation mark within a triangle is

intended to alert the user to the presence of

important operating and service instructions in the
literature accompanying the product.

3.2 WARNING

To reduce risk of fire or electric shock, do not expose
this apparatus to rain or moisture.

3.3

 

CAUTION

To reduce the risk of fire or electric shock, do not
remove screws. There are no user-serviceable parts
inside this amplifier. Refer servicing to qualified
personnel only.

3.4 

Important Safety Instructions

Before using your amplifier, please read the operating instructions and the safety suggestions

1.

 

Keep this manual for future reference.

2.

 

Do not operate the amplifier if liquid ingress is suspected.

3.

 

Do not stand water or any other liquid on, or near the amplifier.

4.

 

Do not use this amplifier near water. Do not operate the amplifier if wet or standing in liquid.

5.

 

Clean only with dry cloth.

6.

 

Do not block the air intake or exhaust ports. Always install the unit in accordance with the instructions.

7.

 

Do not operate the amplifier on or near any source of heat, such as radiators, lighting dimmer racks, or
other apparatus that produce heat.

8.

 

Always operate the amplifier with the chassis ground wire connected to the electrical safety earth. Do not
tamper with the purpose of the electrical safety earth, it is provided for your safety. A grounding type plug
is fitted; this has two pins and a third grounding prong. If the plug provided does not fit your mains outlet,
consult an electrician or a competent person to replace the fitted plug. See page 10 section 6.3 for wiring
colour code

9.

 

Connect only to AC power outlets rated 230 - 240V (or 100 - 120 V), 50-60Hz.

10.

 

Do not use this amplifier if the mains cable is damaged or frayed, particularly check where the mains
cable exits the amplifier and the mains plug. Protect the mains cable from being walked upon or rolled
over by heavy objects.

11.

 

Only use accessories specified by the manufacturer.

!

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All material © 2007. Martin Audio Ltd. Subject to change without notice.

CONTENTS

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GUIDES

Summary of Contents for MA1.3s

Page 1: ...M MODE 7 5 3 4 BRIDGE MONO MODE 7 5 3 5 BRIDGE MONO MODE FEATURES 7 6 INSTALLATION 8 6 1 MOUNTING 8 6 2 COOLING 8 6 3 OPERATING VOLTAGE 8 6 4 DENMARK 9 6 5 GROUNDING 9 6 6 POWER CONSUMPTION 9 6 7 CALC...

Page 2: ...ons 1 Keep this manual for future reference 2 Do not operate the amplifier if liquid ingress is suspected 3 Do not stand water or any other liquid on or near the amplifier 4 Do not use this amplifier...

Page 3: ...the amplifier s front panel attenuator s to reduce the gain it is still possible to reach full output power if the input signal level is high enough 3 5 2 Loudspeaker output hazard Power amplifiers ar...

Page 4: ...he signal level entering the amplifier They are calibrated in dB s to assist the setup of active loudspeaker systems See page 12 3 Protect indicator LED This indicator illuminates if the amplifier att...

Page 5: ...s hot see page 10 4 Link Input XLR male connector connected in parallel to the female for linking the channel to another input 5 Gain switch channel B Three of the switches in the DIP switch selects t...

Page 6: ...power output 1 thd 1KHz sine wave 5 1 3 Options As the DIP switch is recessed a sticker can be placed across the cut out to prevent unauthorized tampering Another option is to remove the DIP switch T...

Page 7: ...edance of the load must be more than 3 ohms Set the Link bridge switches to the ON position UP and use either of the input connectors A or B You can use the remaining input connectors to carry a paral...

Page 8: ...he heat sink temperature rises too high sensing circuits will mute the hot channel If the power supply overheats another sensing circuit will mute both output channels until they cool down to a safe o...

Page 9: ...rmine the power current consumption of the amplifier First the peak current draw at full output power Under this condition the power amplifier will operate for less than 2 minutes before thermally lim...

Page 10: ...EAT POWER 1 3 POWER 1 8 POWER 1 3 POWER 1 8 POWER 1 3 POWER 1 8 POWER WATTS Kcal hour BTU hour 8 Ohm 397 313 340 270 1350 1070 4 Ohm 687 538 590 460 2340 1840 2 Ohm 1242 910 1070 780 4240 3110 1 3 Pow...

Page 11: ...connected you will lose 6 dB A better method for using unbalanced sources is shown in Figure 8 This is similar to the connection for balanced lines but pin 3 is connected to the shield at the source T...

Page 12: ...g voltage and power consumption Make sure that the operating mode switches on the rear panel gain link bridge and clip limiters are in the correct position See page 6 about operating modes page 13 abo...

Page 13: ...f the signal is distorted or clipped before it reaches the amplifier the clip limiter will not be activated Under normal operation the clip limiter is inaudible The limiter can be turned ON or OFF by...

Page 14: ...inside of the amplifier These conditions usually occur after prolonged use e g in environments using cracked oil smoke machines If you are using your amplifier for heavy duty use i e concert touring...

Page 15: ...nt weather conditions and normal wear and tear Units on which the serial number has been removed or defaced will not be eligible for warranty service 3 MARTIN AUDIO LTD shall not be responsible for an...

Page 16: ...wer both channels driven 5 0 Arms 10 Arms 1 3rd Full power both channels driven 8 0 Arms 16 Arms Full power 1Khz 1 thd 14 0Arms 28 0 Arms DISTORTION THD 20Hz 20KHz 1W to full power 0 07 THD 1KHz 1dB b...

Page 17: ...tors Clip 2 x Red LED s Indicators Signal Present 2 x Green LED s Rear Panel Input Connectors 2 x Neutrik Combo 3 pin Phoenix Output Connectors 2 x Neutrik Speakons Clip Limiters Push Switch ON OFF pe...

Page 18: ...gland Telephone 44 0 1494 535312 Facsimile 44 0 1494 438669 Web www martin audio com E mail info martin audio com The Martin Experience Please Click here to return to main menu Please Click here to vi...

Page 19: ...The Martin Experience ENGLISH MA1 3s Amplifier User s Guide All material 2007 Martin Audio Ltd Subject to change without notice CONTENTS PRINT GUIDES...

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