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MA Series
MULTICHANNEL PROFESSIONAL
POWER AMPLIFIER
OWNERS MANUAL
V 1.1 web
AUDIO ELECTRONICS DESIGN
AUDIO ELECTRONICS DESIGN
AUDIO ELECTRONICS DESIGN
AUDIO ELECTRONICS DESIGN
EQUIPOS EUROPEOS ELECTRÓNICOS, S.A.L
Avda. de la Industria, 50. 28760 TRES CANTOS-MADRID (SPAIN).
34-91-761 65 80
34-91-804 43 58
altair@altairaudio.com
www.altairaudio.com
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Summary of Contents for Altair MA SERIES
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Page 1: Power Amplifier
MA Series MULTICHANNEL PROFESSIONAL POWER AMPLIFIER OWNERS MANUAL V 1.1 web AUDIO ELECTRONICS DESIGN AUDIO ELECTRONICS DESIGN AUDIO ELECTRONICS DESIGN AUDIO ELECTRONICS DESIGN EQUIPOS EUROPEOS ELECTRÓNICOS, S.A.L Avda. de la Industria, 50. 28760 TRES CANTOS-MADRID (SPAIN). 34-91-761 65 80 34-91-804 43 58 altair@altairaudio.com... -
Page 2: Table Of Contents
MULTICHANNEL POWER AMPLIFIER V1.1 web Contents: Contents:....................................2 INTRODUCTION................................3 Multiple protection ..................................3 Clipping circuit limiter ................................3 Under control loads .................................4 Remote control ..................................4 Flexibility ....................................4 SWITCHES, INDICATORS, ATTENUATORS AND CONNECTORS ................4 FRONT PANEL: ..................................5 REAR PANEL: ..................................6 WORKING PRECAUTIONS .............................7 INSTALLATION ................................7 UNPACKING..................................7 MOUNTING ...................................7 CHANGING THE FUSE ................................8... -
Page 3: Introduction
There are a lot the characteristics that make of the ALTAIR power amplifiers MULTICHANNEL series; one of the most highlighted of the audio professional market, here enumerated some:... -
Page 4: Under Control Loads
MULTICHANNEL POWER AMPLIFIER V1.1 web or other noticeable cut, it stabilises the output signal integrity, Thereby avoiding overloading and saturation levels that might damage the system. This limiter effect is switchable on or off internally. Limiter is not level adjustable. Limiter action depends only upon the excess distortion found in the output channels. -
Page 5: Front Panel
MULTICHANNEL POWER AMPLIFIER V1.1 web FRONT PANEL: COOLING VENTS INPUT ATTENUATOR. INPUT SIGNAL OVERLOAD INDICATOR/LIMITER ACTION SIGNAL PRESENCE INDICATOR BRIDGE MODE INDICATOR ON/PROTECTION INDICATOR POWER SWITCH... -
Page 6: Rear Panel
MULTICHANNEL POWER AMPLIFIER V1.1 web REAR PANEL: COOLING VENTS BINDING POST FUSE HOLDER. MAINS CORD. REMOTE VOLUME CONTROL MONO/ESTEREO SWITCH ASSIGN INPUTS SWITCH 1,2 OR 3,4, ( 5,6, OR, 7,8) BRIDGE MODE SWITCH EARTH LIFT SWITCH HIGH PASS FILTER SWITCH INPUT SIGNAL CONNECTOR XLR-3-31 INPUT SIGNAL JACK... -
Page 7: Working Precautions
MULTICHANNEL POWER AMPLIFIER V1.1 web WORKING PRECAUTIONS The manufacturer cannot be held responsible for any damage that is incurred by not using the power amplifier in compliance with the warranty or working precautions. DANGER: High voltage inside the amplifier. Do not open! The power amplifier doesn't contain parts that can be repaired by the user. -
Page 8: Changing The Fuse
MULTICHANNEL POWER AMPLIFIER V1.1 web dissipation. In the same way, make sure that there are no heat sources near the front cooling vent, because the fan exhaust cool air through this vent. CHANGING THE FUSE The power amplifiers are designed to work with slow blow type fuses of 6x32, whose values in order to work with a mains voltage of 230V 50-60 Hz or 115V 50-60 Hz. -
Page 9: Input Connection
PIN3 COLD (-) PRECAUTION: If you are a user of another old ALTAIR amplifier series having your equipment with PIN 3+, you must change your wiring configuration externally to avoid phase problems. The input connection depends on two factors, the first is the type of input signal balanced or unbalanced, and the second the ground configuration of the sound source (floating or ground- referenced). -
Page 10: Unbalanced Input
MULTICHANNEL POWER AMPLIFIER V1.1 web type of input signal, balanced or unbalanced and according to the ground configuration of the equipment (floating or ground-referenced). In the next diagrams, we use the following symbols: Sound source with mains cord without ground connection. Sound source with mains cord with ground connection. -
Page 11: Balanced Input
MULTICHANNEL POWER AMPLIFIER V1.1 web Ground-referenced sound source ( POWER AMPLIFIER SOUND SOURCE BALANCED INPUT: Floating sound source ( Ground-referenced sound source ( OUTPUT POWER CONNECTION. OPERATING MODES Each channel includes a pair of five-way binding post. The red binding post is positive and the black is negative phase. - Page 12 MULTICHANNEL POWER AMPLIFIER V1.1 web There are important precautions to avoid accidental short circuit or possible damage in the equipment, in output connections. Consider the power-handling capacity of your speakers before connecting it to the power amplifier. Equipos Europeos Electrónicos is not liable for damage occurred by the connection of speakers to the power amplifier with a nominal power lower that the power amplifier.
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Page 13: Independent Mode Operating (No Bridge)
MULTICHANNEL POWER AMPLIFIER V1.1 web output connections are correct. If doesn't follow these recommendations, could cause a power amplifier and/or loudspeakers breakdown INDEPENDENT MODE OPERATING (NO BRIDGE) Both channels are independent in this mode, for that reason we connect both inputs (1-2, 3-4, 5-6, 7-8) and outputs independently. -
Page 14: Outputs 3 And 4 (7 And 8) Like 1+2 (Like 5+6)
MULTICHANNEL POWER AMPLIFIER V1.1 web OUTPUTS 3 AND 4 (7 AND 8) LIKE 1+2 (LIKE 5+6): We have connect loudspeakers in OUTPUTS 3 and 4 (7 and 8), the signal that we want amplify connected to CH1 and CH2 (CH5 and CH6). The level is controlled from CH3 and CH4 (CH7 and CH8) The connection diagram is similar to the previous one but we must put the switch towards left HIGH PASS FILTER (HPF) -
Page 15: Earth Lift
MULTICHANNEL POWER AMPLIFIER V1.1 web ENABLED 100 HZ HIGH PASS FILTER EARTH LIFT In some installations, it might be necessary to isolate the power amplifier input signal electric ground, from the system mains earth, in order to avoid ground loops, that could generate unwanted noises. -
Page 16: Inputs Atenuators
MULTICHANNEL POWER AMPLIFIER V1.1 web connecting it to the mains is dangerous and likely, it blows the mains fuse of the rack power supply when available. In a rack of power amplifiers, switch the power amplifiers on in a one by one basis. Note that upon switching the power amplifier on, the ON/PROTECT indicator blinks (indicating that the power amplifier is cutting the output signal), and after a few seconds this green doesn’t blink, it light up and a RELAY click will be listened indicating that the power... -
Page 17: Fan
MULTICHANNEL POWER AMPLIFIER V1.1 web The ON/PROT LED indicates the connection or disconnection of the load from the power amplifier. The thermal protection disconnects the load from the power amplifier. This only happens under the most severe conditions of continuous overload; in such a case, it is essential to localise and to rectify the cause of this overheating condition. -
Page 18: Remote Control
MULTICHANNEL POWER AMPLIFIER V1.1 web REMOTE CONTROL The MULTICHANNEL SERIES has remote volume control possibility of each channel. Ask your dealer for the RVC-1 accessory RVC-1 REMOTE VOLUME CONTROL (Not included in the amplifier) Installing The power multichannel remote control is made thought of RVC-1 unit, you be able to set-up the channels that you want control inside it. -
Page 19: Remote Control Setup
MULTICHANNEL POWER AMPLIFIER V1.1 web REMOTE CONTROL SETUP You must put all switches towards on Connected to REMOTE VOLUME CONTROL CH1-4 VOLUME CH1 VOLUME CH2 VOLUME CH3 VOLUME CH4 VOLUME CH5-6 VOLUME CH7-8 S1 (RVC-1) MA 150x8 set-up MODE BRIDGE EARTH LIFT FILTER CH1-CH2... -
Page 20: Special Operations
MULTICHANNEL POWER AMPLIFIER V1.1 web SPECIAL OPERATIONS In order to configure some of the power amplifier possibilities it is necessary to open upper cover, we need unscrewing the 12 screws. NOTE: This type of operations takes place with the unit open, for what it should be carried out by a qualified technician. -
Page 21: On/Off Limiter
MULTICHANNEL POWER AMPLIFIER V1.1 web The factory default configuration is with input sensitivity 0 dBu. The gain (times that the output signal is increased with respect to input signal) depends on the power amplifier model, as well as of the input sensitivity configuration. In the next table is shown the gains according to the power amplifier model and its input sensitivity configuration (with intermediate input sensitivities, subtract the gain corresponding to 0 dBu with the configured input sensitivity, and obtain the power amplifier gain i.e.: 36-6 = 30). -
Page 22: Technical Specifications
MULTICHANNEL POWER AMPLIFIER V1.1 web Make sure that the power amplifier is disconnected of the mains. Make sure that the fuse is the right one for the selected voltage: MODEL FUSE (230V. 50-60 Hz) FUSE (115V. 50-60 Hz) MA80.4 T5A. T10A. -
Page 23: Warranty
Equipos Europeos Electrónicos reserves the right to modify the prices or the technical specifications without notice. SERIAL NUMBER ........... EQUIPOS EUROPEOS ELECTRÓNICOS, S.A.L Avda. de la Industria, 50. 28760 TRES CANTOS-MADRID (SPAIN). 34-91-804 32 65 34-91-804 43 58 altair@altairaudio.com www.altairaudio.com... - Page 24 Información basada en la Directiva de la unión europea RAEE 2002/96/EC y el Real Decreto 208/2005 AUDIO ELECTRONICS DESIGN AUDIO ELECTRONICS DESIGN AUDIO ELECTRONICS DESIGN AUDIO ELECTRONICS DESIGN EQUIPOS EUROPEOS ELECTRÓNICOS, S.A.L Avda. de la Industria, 50. 28760 TRES CANTOS-MADRID (SPAIN). 34-91-761 65 80 34-91-804 43 58 altair@altairaudio.com www.altairaudio.com...
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