Related Manuals for Martin Audio MA3.0
Summary of Contents for Martin Audio MA3.0
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Page 1: User Guide
MA3.0 High Performance Amplifier User Guide The Martin Experience All material © 2009. Martin Audio Ltd. Subject to change without notice. -
Page 2: Table Of Contents
Dust removal ................... 13 5 Warranty ....................14 7 Technical notes ..................15 Block diagram ..................15 Thermal Dissipation ................16 Specification ................... 17 Technical Drawing .................. 18 All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 3: Important Safety Instructions
This equipment has been tested and found to comply by Notified Body (Directive 2006/95/EEC L.V) pursuant to the audio apparatus safety requirements: Standard EN 60065. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 4: Warning Notices
Contact the authorized centre for ordinary and extraordinary maintenance. Speaker damage Martin Audio MA3.0 amplifiers are among the most powerful professional amplifiers available and are capable of producing much more power than many loudspeakers can handle. It is the user's responsibility to use suitable speakers with the amplifier and to use them in a sensible way that will not cause damage. - Page 5 Speaker output shock hazard A Martin Audio amplifier is capable of producing hazardous output voltages. To avoid electrical shock, do not touch any exposed speaker wiring while the amplifier is operating. This manual contains important information on operating your Martin Audio amplifier correctly and safety.
- Page 6 Totally Digital with High Reliability The MA3.0 series is based on PWM technology that has been used for 30 years or more in power supplies and inverters. PWM provides high reliability, small size, low weight and high efficiency. A PWM converter works as a high frequency sampler, converting the variable amplitude (audio) signal into an impulse sequence with average value equal to the audio input.
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Page 7: Installation And Operation
Mounting The MA3.0 amplifiers will mount in a standard 19" rack. Four front panel mounting holes are provided. Rear support mounting holes are also provided. These should always we used to support the weight of the amplifier at the rear in a 19”... -
Page 8: Operating Precautions
The system allows performance to be maintained even in circumstances of varying the mains voltage. Is important to connect the ground for safety, do not use adapters that disable the ground connection. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 9: Connecting Inputs
The Link switch located in the rear panel is for direct paralleling the rear input connectors. You can use the remaining input connector to carry signal to other amps. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 10: Connecting Outputs
This is significant for signals below 100Hz (sub bass etc.) and improves the power bandwidth. Be sure to use balanced inputs on all measurement equipment (including oscilloscope probes) if you are bench testing. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 11: Setup And Settings
The gain ∞ control uses a logarithmic scale from - +32dB. Read the instructions below carefully which will explain the many functions of the amplifier. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 12: The Led Indicators
The LED indicators The figure below shows the front panel of the MA3.0. The clip LED, when lighting, indicates the clipping state for the output stage of the corresponding channel. The signal, -18dB and -6dB LEDs operate as V-meter and the signal LED is illuminated when the signal is present in the input stage of the correspondent channel. -
Page 13: Protection
MA3.0. Input / Output protection An ultrasonic network decouples RF from the outputs and keeps the amplifier stable with reactive loads. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 14: User Maintenance
Disconnect the amplifier from the AC main source first; use a soft cloth and mild non-abrasive solution to clean the faceplate and chassis. Service There are no user-serviceable parts in your MA3.0 amplifier. Refer servicing to qualified technical personnel. If your MA3.0 amplifier needs repair, contact your Martin Audio dealer or distributor. Dust removal Particularly in dusty environments, the front filters clog with dust and dirt after prolonged use, this will interfere with cooling. -
Page 15: Warranty
3 (three) years from the date of original purchase. During the warranty period Martin Audio will, at its discretion, either repair or replace products which prove to be defective provided that the product is returned in its original packaging, shipping prepaid, to an authorised Martin Audio service agent or distributor. -
Page 16: Technical Notes
Technical notes Block diagram The diagram below shows the amplifier block diagram (1 Channel shown). All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 17: Thermal Dissipation
12 all amplifier circuitry must include a “bleed” resistor across the incoming AC mains power to discharge residual current to prevent the risk of shock from an amplifier disconnected from the mains. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 18: Specification
Over-temperature forecasting, thermal protection, short circuit protection, overload output protection, temperature controlled air cooling system, clip limiter and permanent signal limiter, auto-reset system, parallel inputs switch, input signal presence LED. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 19: Technical Drawing
Technical Drawing All material © 2010 Martin Audio Ltd. Subject to change without notice...