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the amplifier to be used without severe hard clipping.

The "card enable" LED indicates when a dedicated processing module is
fitted in the amplifier. 

The remaining red "thermal" LED indicates the temperature status of the
amplifier. The E1300 is fitted with a sophisticated thermal management
system. Under normal operation the thermal LED will be "OFF", if more
power is demanded from the amplifier, or airflow to the amplifier is
restricted the 

LED

will 

start to flash

to indicate an elevation in operating

temperature. If no action is taken at this point the third status level will be
reached, the thermal and limit 

LED’s

will be "ON", and the amplifier will

protect itself by reducing the power to the load. When the amplifier has
cooled sufficiently the power will ramp back up to the previous level. If the
amplifier does not cool enough or the fans fail completely, the amplifier will
lock in a reduced power state until the problem is cleared.

17

PROTECTION FEATURES

Every Martin Audio E series amplifier has many advanced protection
features that will protect both the amplifier and the loudspeakers connected
to it, should a fault condition arise. Under normal use these features are
inaudible.

Output Power Limiter

An output limiter is included to avoid severe amplifier clipping. When an
amplifier is severely overdriven, its output waveform is clipped (its peaks
are squared off) - reducing the crest factor. In extreme cases, the waveform
can approach that of a square wave. An amplifier is capable of producing
far more power under these conditions than its normal undistorted rated
power output. If the distortion exceeds 1% THD for any reason the limiter
reduces the input signal proportionally. 

Note that, if the input signal is

clipped before it reaches the amplifier, the clip limiter will not be
activated and severe damage to the loudspeakers could occur.

Amplifier Thermal  Protection 

All high power amplifiers produce considerable heat as a product of power
output. The E1300 is equipped with a very efficient heat exchanger and an
automatic logic controlled thermal management system. 

When the amplifier is switched on the dual fans will start up and remain at
a low idling speed. As the amplifier provides more power the fans may
switch to the second cooling level. Under sustained demand for high power
or when there is insufficient cooling, the third level of fan speed is reached
and the red “thermal” LED on the front panel will begin to flash.

If no action is taken to either reduce the power demand or increase the
airflow through the amplifier, it will automatically protect itself, by reducing
the power to the loudspeaker. The status of the “thermal” and “max” LED’s
will change to permanently "ON" and the green and amber signal LED’s will
extinguish.

Martin Audio – E1300 Amplifier

E

NGLISH

18

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

Summary of Contents for E1300

Page 1: ...ERATING VOLTAGE 11 Mains Connections 11 Grounding 11 11 POWER CONSUMPTION 12 12 INPUT CONNECTIONS 13 Balanced Unbalanced 14 13 OUTPUT CONNECTIONS 15 14 CONNECTING LOUDSPEAKERS 15 15 OPERATING MODES 16...

Page 2: ...data exclusive to each amplifier 3 FEATURES 1 Plug in front panel module facility eliminating the need for external controllers 2 High frequency switching power supply with on board intelligent contr...

Page 3: ...tput to any other voltage source such as a battery mains source or power supply regardless of whether the amplifier is turned ON or OFF Do not run the output of any amplifier back into another channel...

Page 4: ...e These limits are designed to provide reasonable protection against harmful interference from electrical equipment This amplifier uses radio frequency energy and if not used or installed in accordanc...

Page 5: ...hand side of the front panel The amplifier is ON when the switch is Down A red LED will illuminate to show the presence of mains power Note The power switch must remain accessible when the amplifier...

Page 6: ...5 push button switches mounted on the main motherboard SW 1 selects the high pass cut off frequency Standard frequencies 15Hz and 30Hz 30Hz when IN SW 2 is high pass filter in out High Pass in when I...

Page 7: ...The output of Channel A Channel B and bridge appear on pins 1 and 1 Pins 2 and 2 are open circuit Note It is important that the correct polarity is observed when connecting your loudspeaker system The...

Page 8: ...e used for daisy chaining the signal to other amplifiers Mains Voltage Selection The E1300 is dual voltage selectable it is normally supplied pre selected for 220 240 Volt AC operation only For use on...

Page 9: ...or with different fusing characteristics it will blow prematurely whilst a fuse of a higher rating than recommended is unsafe and dangerous and could cause fire or catastrophic failure in the event of...

Page 10: ...Never try to reverse the airflow as the amplifier needs a pressure chamber between the fans and the heatsink and this only operates in one direction of the airflow Warning never rack different brands...

Page 11: ...r can be started with the power switch When you power up the amplifier it takes a few seconds to self check This is known as the soft start sequence The fans will start and the red power ON LED and re...

Page 12: ...te of constant clip and is the highest power level that can be obtained without completely obliterating the program content Lastly the normal operating power as defined by EN60065 as a measurement lev...

Page 13: ...S Both Channel A and Channel B inputs are electronically balanced on 3 pin XLR type connectors and wired pin 2 hot pin 3 cold and pin 1 Earth or SIG 0V E1300 HEAT POWER 1 3 POWER 1 8 POWER 1 3 POWER 1...

Page 14: ...ut connections using the input Link XLR Balanced line source and input Unbalanced source with balanced input To minimize hum in the audio use balanced connections whenever possible Martin Audio E1300...

Page 15: ...Loudspeaker connections are made via the three Neutrik NL4 Speakon connectors 4 5 and 6 These connectors meet the EC safety requirements They are wired as follows Pin 1 Speaker negative Pin 1 Speaker...

Page 16: ...d in this mode of operation The output connection is the same as in stereo mode Bridged Mono To bridge the amplifier depress switch S5 located behind the removable panel module on the front of the amp...

Page 17: ...hannel A level control is used Gain Switch The gain switch SW3 is located behind the plug in panel module on the front of the amplifier when in the OUT position the gain of the amplifier is 36dB input...

Page 18: ...waveform is clipped its peaks are squared off reducing the crest factor In extreme cases the waveform can approach that of a square wave An amplifier is capable of producing far more power under thes...

Page 19: ...he amplifier OFF then back ON If the short circuit or very low impedance load is still present at the outputs the power supply will again shut down instantaneously High Frequency Protection If the amp...

Page 20: ...ommend you do not use the amplifier in environments using cracked oil smoke machines as condensed oil inside the amplifier can cause serious damage Replacement Fuses 220V 240V 10 Amp type T H Martin A...

Page 21: ...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 any incidental or consequential da...

Page 22: ...REMENTS 230V Setting 115V Setting Operating voltage 180 250Vac 90 125Vac Minimum start up voltage 140Vac 70Vac Peak inrush current 11 8 Amps 23 Amps Current draw 4 Quiescent No load 0 9 Arms 1 8 Arms...

Page 23: ...vable panel on to the front of the amplifier Unplug the grey ribbon cable from its park position SK2 on the motherboard and plug it into the header on the module If any changes are required to the fun...

Page 24: ...HP12 3SL England 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...

Page 25: ...The Martin Experience ENGLISH E1300 Amplifier User s Guide All material 2007 Martin Audio Ltd Subject to change without notice...

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