Martin Audio MA900 Operation & User’s Manual

ENGLISH 4 4 INTRODUCTION Thank you for purchasing a Martin Audio power amplifier. This manual contains important information on operating your amplifier correctly and safely. Please take some time and read this manual and familiarize yourself with the advanced features of this amplifier. 4.1 Unpacking Each Martin Audio MA series amplifier 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 such damage is found. It is sugge ...

ENGLISH 12 MA90 0 -40dB CLIP PROTECT ON WARNING: To prevent electric shock, do not operate the amplifier with any of the loudspeaker cable conductors exposed. 8 OPERATION 8.1 Operating precautions • Make sure that the power switch is set to “OFF” before connecting any input or output or operating the switches on rear panel. See pages 8 about installation. • Make sure that the AC mains voltage is correct and the same as the one printed on the rear panel of the amplifier. See pages 8, about operating voltage and power consumption. • Make sure that the s ...

ENGLISH 15 11 WARRANTY General The MA900 Power amplifier is warranted to be free from defects in components and factory workmanship under normal use and service, for a period of three years from the date of original purchase. During this warranty period MARTIN AUDIO LTD or it's nominated agents, will undertake to repair, or at it's discretion, replace this product at no charge to it's owner, when failing to perform as specified, providing the unit is returned undamaged, in it's original packaging, shipping prepaid, to the factory, distributor or authorised serv ...

ENGLISH 4 4 INTRODUCTION Thank you for purchasing a Martin Audio power amplifier. This manual contains important information on operating your amplifier correctly and safely. Please take some time and read this manual and familiarize yourself with the advanced features of this amplifier. 4.1 Unpacking Each Martin Audio MA series amplifier 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 such damage is found. It is sugge ...

ENGLISH 3 ! 13. Unplug this apparatus during lightning storms or when unused for long periods of time. 14. Do not connect an amplifier output in parallel or series with any other amplifier’s output. Do not connect the amplifier output to any other voltage source, such as a battery, mains outlet, or power supply, regardless of whether the amplifier is turned on or off. 15. Do not run the output of any amplifier back into another channel's input. 16. Refer all servicing to qualified personnel only. Servicing is required when the apparatus has been damaged in an ...

ENGLISH 7 ! 5.3.2 Notes for amplifier testing NOTE: Channel B is always polarity reversed on the input, and polarity reversed back on the output. On channel B the positive output voltage with respect to 0V appears on pin -2 of the Speakon connector. Channel A is connected with normal polarity. By having channel A and B operating in opposite polarity, the energy storage in the power supply is more efficient. This is significant for signals below 100 Hz (sub bass etc.) and improves the power bandwidth. Be sure to use balanced inputs on all measuring equipment (in ...

ENGLISH 9 O nce co n ne cte d to a su ita ble AC su pp ly, the am plifier ca n be starte d w ith the p o we r switch. Wh en yo u po w er u p the a mp lifie r it ta ke s a cou p le o f secon d s to se lf ch eck (th is is kno wn as th e "soft sta rt" o r "slow start" se qu e nce), the fa ns the n blo w at high sp ee d b efore g oing in to "idle". T he tw o bo tto m gre en L E D’s th e n illum in ate to sho w th e a mp lifie r is o pe ra tio na l. 6.4 Grounding T he re is n o g ro un d lift switch o n th is am plifier. T he sign al grou nd is a lwa ys floa tin ...