Mark Audio MA 1000 User manual
MA 1000 POWER AMP
Owner’s Manual
v 14.mar.2011
02
1. IMPORTANT SAFETY INSTRUCTIONS
1) Read these instructions;
2) Keep these instructions;
3) Heed all warnings;
4) Follow all instructions;
5) Do not use this apparatus near water;
6) Clean only with a dry cloth;
7) Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions;
8) Do not install near any heat sources such as radiators, heat registers, stoves,
orotherapparatuses(includingampliers)thatproduceheat;
9) Do not defeat the safety purpose of the polarized or ground-type plug. A
polarized plug has two blades with one wider than the other. A grounding type
plug has two blades and a third grounding prong. The wide blade or the third
prongareprovidedforyoursafety.Iftheprovidedplugdoesnottintoyour
outlet, consult an electrician for replacement of the obsolete outlet;
10) Protect the power cord from being walked on or pinched, particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus;
11) Onlyuseattachments/accessoriesspeciedbythemanufacturer;
12) Unplug this apparatus during lightning storms or when unused for long periods of
time;
13) Referallservicingtoqualiedservicepersonnel.Servicingisrequiredwhen
the apparatus has been damaged in any way, such as when the power-supply cord
or plug is damaged, liquid has been spilled or objects have fallen into the
apparatus, or when the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped;
14) “Warning:toreducetheriskofreorelectricshock,donotexposethis
apparatustorainormoisture;andobjectslledwithliquids,suchasvases,
should not be placed on this apparatus”;
15) The socket outlet shall be installed near the equipment and shall be easily
accessible;
16) The power cord must be unplugged prior to servicing.
MORE INFORMATION
For warranty and service information, please contact your local Markaudio distributor
(contact information available at www.markaudio.it).
Formoretechnicalinformation,pleasevisitusatwww.markaudio.itandllouttheform
on the Contact Us page.
We hope you enjoy your power amp and use it to make great music!
“The Lightning Flash with arrowhead symbol within an equilateral triangle, is intended to
alert the user to the presence of uninsulated “dangerous voltage” within the product
enclosurethatmaybeofsufcientmagnitudetoconstituteariskofshocktopersons.”
“The exclamation point within an equilateral triangle is intended to alert the user to
the presence of important operating and maintenance (servicing) instructions in the
literature accompanying the product.”
“The Lightning Flash with arrowhead symbol within an
equilateral triangle, is intended to alert the user to the presence of
uninsulated “dangerous voltage” within the product enclosure that
maybeofsufcientmagnitudetoconstituteariskofshocktopersons.”
“The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the product.”
03
1. PRÉCAUTIONS D’EMPLOI
1) Lire ces instructions;
2) Conserver ces instructions;
3) Suivretouslesconseilsd’utilisations;
4) Suivretouteslesinstructions;
5) Ne pas utiliser cet appareil au bord de l’eau;
6) Nettoyer uniquement avec un chiffon humide;
7) Ne pas bloquer le système de ventilation. Installer conformément aux instructions
du fabricant;
8) Ne pas installer l’appareil près d’une source de chaleur tel qu’un radiateur, un
fourneau, ou bien un autre appareil qui produit de la chaleur;
9) Nepasmodierlesystèmedesécuritédelachepolariséeoudedelache
pourlesprisesdeterre.Unechepolariséeadeuxbroches,l’uneétantplus
distantedel’autre.Unechepourprisedeterreadeuxbrochesetunepointe
pour la masse. La broche plus distante et la pointe pour la masse ont été
installéespourvotresécurité.Silachefourniederentrepasdansvotre
prise de courant consulter un électricien pour la substitution;
10) Protégerlecordond’alimentationanqu’ilnesoitpaspiétinéouécrasétout
particulièrementauniveaudesches,desprisesdecourantfemelles,etdes
parties qui sortent de l’appareil;
11) Utiliser uniquement les accessoires recommendés par le fabricant;
12) Ne pas branché l’appareil en cas d’orage accompagné d’éclairs. Le débrancher en
cas de non utilisation prolongée;
13) S’adresseràunserviceassistanceagréésil’appareilasubidesdommages,sile
cordond’alimentationoulacheaétéendommagé,siunliquideaétérenversé
sur l’appareil ou bien si un object est tombé dans l’appareil, si ce dernier a
étéexposéàlapluieouàl’humidité,s’ilnefonctionnepascorrectement
ou s’il est tombé;
14) “Avertissant: pour réduire le risque du feu ou de décharge électrique, n’exposez
pascetappareilàlapluieoul’humiditéetlesobjetsremplisdeliquides;tels
que des vases, ne devraient pas être placés sur cet appareil”;
15) La prise de courant doit être installée près de l’appareil et doit être facile
ment accessible;
16) Lacheprincipaledoitêtredébranchéeavanttouteopérationd’entretien.
04
MA 1000 USER’S MANUAL
2.CONTENTS
INTRODUCTION 4
FUNCTIONS OVERVIEW (FRONT PANEL) 5
CONNECTIONS (REAR PANEL) 5
TECHNICAL SPECS 6
BLOCK DIAGRAM 7
3. MA 1000 POWER AMP - INTRODUCTION
Congratulations on your purchase of the MA 1000 power amp!
TheMA1000isdesignedforhighoperatingefciency,providingthegreatestexibility
with the highest reliability. We are very proud of the high quality standard that we’re
able to offer thanks to our 100% Made in Italy production, state-of the-art testing and
quality control facilities, and top-quality components.
The MA 1000 gives maximum ease of operations, and its amazing power/size ratio (1000W/1
rack unit) allows you to have an impressive amount of power with incredible portability!
The MA 1000 provides 500 watts/channel @ 4 ohms or 300 watts/channel @ 8 ohms when used in
stereo applications, or 1000 watts bridged mono into an 8 ohm load! That means that in 4
units of a standard rack case you can have 4 MA 1000s = 4000W!!
This manual will help you get the most out of your MA 1000 power amp. If you have any
questions after reading it, we invite you to contact us any time with your comments and
Thank you again, and enjoy your Markaudio MA 1000!
05
4. FUNCTIONS OVERVIEW (FRONT PANEL)
LEVEL left (1) – This controls the volume level of the left channel. In bridge mode this
is the master level.
LEVEL right (2) – This controls the volume level of the right channel. In bridge mode this
is disabled.
CLIP (3) (4) – The clip LED allows you to set the optimal gain level of your signal so
thatyoucanavoiddegradationofyoursignalquality.Tondtheoptimallevelbackoff
the MA 1000 power amp level so that the LED rarely turns on.
ALARM (5) (6) – The Alarm LED signals failure or protection of the power module. The
automaticshortcircuitprotectiondetectsproblemsandshutsdowntheamplierbeforeany
internal damage can be done.
LIMITER (7) (8) – This switch allows you to turn the limiter for each channel on and off.
BRIDGE (9) - This switch allows you to choose the BRIDGE mode, in which the MA 1000 power
amp operates as a mono unit sending 1000W to an 8 ohm load (Channel 2 becomes inoperable
when the Bridge mode is on). In the “bridged” position the LED will be “ON”. In “OFF”
positiontheunitoperatesasanormalstereoamplierwith500watts@4ohms(or300W/
channel @ 8 ohms) per channel or side.
ON/OFF (10) – This switch powers up the MA 1000 power amp; a LED on the right indicates
that the unit is on.
5. CONNECTIONS (REAR PANEL)
INPUT left (11) - This XLR input provides an input to the Left channel from the output of
your mixer, or the last device in your effects chain. This connection is also used as the
input connection when operating the MA 1000 power amp in Bridge mode.
INPUT right (12) - This XLR input provides an input to the Right channel from the output of
your mixer, or the last device in your effects chain. Use this input and the Left channel
balanced input when running in stereo. Please note that the Right input is inoperable in
Bridge mode.
06
LINK left (13) / right (14) - Use these balanced outputs to connect other devices.
GROUND LIFT for inputs (15) and links (16) – Occasionally you may detect a constant hum
when using the power amp. This is almost always due to a grounding problem related to your
powersource;youwilllikelyeliminate/reducethishumsimplybyippingtheGroundLift
(GND) switch.
SPEAKER OUT left (17) and right (18) – These speakon outs provide power outputs for Left
and Right channels to speaker cabinets. Do not connect these outputs to a load of less
than 4 ohms!
SPEAKER OUT BRIDGE (19) – This speakon out is used when using the MA 1000 power amp in
mono-bridge mode. Do not connect this output to a load of less than 8 ohms!
Note: always be certain to use speaker/s capable of handling the power provided in the
above mentioned applications.
AC POWER (20) – Connection for the power cord. This location also houses the main fuse of
the unit.
6. TECHNICAL SPECS
INPUTS
INPUTS LEFT/MONO (BRIDGE) & RIGHT Balanced, impedance 5 Kohms, maximum voltage: 30 Vpp
GND LIFT One for each channel
OUTPUTS
LINK Balanced, parallel output for each channel (one GND
lift for each channel)
POWER OUTPUT 300+300W@8Ω,500+500W@4Ω,1000W@8Ωbridged
Power consumption: medium 500W, maximum 1200W
CONTROL
LEVEL Left/Mono, Right
LIMITER ON/OFF Left/Mono, Right
BRIDGE On/Off
OTHER
SLEW RATE 10 V/us
DAMPING FACTOR >60
NOISE RATIO >100 dB/A
FREQUENCY RESPONSE 3 Hz to 20 kHz
SENSITIVITY 500mVp
POWER DEVICES switchingMOSFETs
DIMENSIONS 1Unitstandardrack,depth365mm
WEIGHT 3,9 kg / 8.38 lbs.
07
BRIDGE
LIMITER
LIMITER Power
Amp
Power
Amp
Power
Output
Power
Output
Link
Buer
Inverter
Link
Buer
POWER SUPPLY 100/120V/230V/240V 50/60Hz
(Version factory preset inside the equipment)
Markaudio apparatuses are manufactured to be sold
and used in the country of purchase, and are
factory preset to that country’s voltage. Due to
homologation issues, the voltage may not be changed.
7. BLOCK DIAGRAM
Italy - Via Po, 52 - 66020 San Giovanni Teatino (Ch) -
Tel. +39 085 446 3755 - Fax +39 085 440 7764 -
Product specifications are subject to change without notice.
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