Related Manuals for Martin Audio MA12K - 2010
Summary of Contents for Martin Audio MA12K - 2010
- Page 1 MA12K, MA12K DSP User Guide The Martin Experience All material © 2010. Martin Audio Ltd. Subject to change without notice.
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Page 2: Table Of Contents
Handling Smartcard presets ..............21 Menu locking................... 23 Amplifier name ..................23 DSP signal path ..................23 DSP features ................... 24 3.10 DSP Submenu ..................24 3.10.1 Restore flat ....................25 All material © 2010 Martin Audio Ltd. Subject to change without notice... - Page 3 Dust removal ................... 36 6 Warranty ....................37 7 Technical notes ..................38 Block diagram ..................38 Thermal Dissipation ................39 Specification ................... 40 Technical Drawing .................. 41 All material © 2010 Martin Audio Ltd. Subject to change without notice...
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Page 4: 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 5: Warning Notices
Contact the authorized centre for ordinary and extraordinary maintenance. Speaker damage Martin Audio MA12K & 12K DSP 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 6 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 7 Introduction The totally new Martin Audio MA12K & 12K DSP technology has changed the way the world looks at professional audio amplification. No other amplifiers come close for applications demanding high power and long term reliability. Thanks to amazing reductions in heat output along with reductions in weight and the specific high output power, MA12K &...
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Page 8: Installation And Operation
Carefully open the shipping carton and check for any noticeable damage. Every Martin Audio amplifier is completely tested and inspected before leaving the factory and should arrive in perfect condition. If you find any damage, notify the shipping company immediately. Be sure to save the carton and all packing materials for the carrier's inspection. -
Page 9: 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 10: 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 11: 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 12: Connecting Remote Control
RJ45 socket located on the rear panel of the amplifier. The same picture shows also the ID selection for Remote Control (in this case ID= 28); to change the ID; rotate the selectors at the desired position. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 13: Setup And Settings Using The Amplifier's Front Panel Controls
Each pushbutton has multiple functions and the display shows the current active function for each button. 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 14: The Main Screen
"ok" (if the chosen item enables or disables a function, display showing "on" is replaced with "off" for disabling it, or "on" for enabling it. See below for menu tree. Main menu All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 15: Output Attenuation
0 to -30dB. Note: for the best sonic performance it is recommended that you set the attenuation to 0db (no attenuation), and select the proper gain/sensitivity from the following menu. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 16: Gain/Sensitivity
"C1+2" button. The "+" and "-" buttons change the value of the gain. The values of gains permitted are 26, 29, 32 and 35 dB. Martin Audio strongly recommends the use of the default 32dB setting as this is the industry standard and is the basis for the limiter thresholds used in all Martin Audio loudspeaker controllers and published speaker parameters. -
Page 17: Gate Ch1 - Ch2
In the Bar meters screen you can select the LED bargraphs to operate as output voltage meters and the LCD bargraphs in the main screen as output current meter (by selecting "LED Volt, LCD Curr), or vice versa (by selecting the other option). All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 18: Output Meters
KFRNT the version number of the front panel KCTRL the version number of the controller KETH the version number Ethernet adapter Lifetime the operating time of the amplifier All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 19: Hardware Monitor
You can select the desired option by pushing up or down button and "ok" to activate it. The option "Recall local preset" does not appear if the smartcard is blank. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 20: Lcd Contrast
In this screen you can insert the numeric key to unlock the settings. The same screen appears when the “unlock” button in the main screen is pressed. There is a universal key to unlock the settings. This is 270156. 2.3.19 Service This function is factory reserved. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 21: Dsp
When you edit a parameter, you start in the “fine” mode. The steps applied by the – and + keys are the minimum allowable for that parameter. You can switch to the “coarse” mode by clicking the “fast” key. The “fast” key will be renamed “slow”. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 22: Handling Local Presets
The store and recall procedures are identical to those used for local presets. All material © 2010 Martin Audio Ltd. Subject to change without notice... - Page 23 For instance, if you load a preset named “18IN SUB 1” from a smartcard, and then save it into local memory: Select Keep name? Modify current name Use existing name All material © 2010 Martin Audio Ltd. Subject to change without notice...
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Page 24: Menu Locking
There are some features found only in high level sound processors, and some new utilities that can only be implemented in a completely integrated DSP/amplifier system. A complete block diagram of the processing chain is shown below All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 25: Dsp Features
patented damping control and cable resistance compensation: get optimally damped bass response regardless of cable length 3.10 DSP Submenu All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 26: Restore Flat
When you use the analog input backup, you must run the amplifier in parallel mode to select only one digital input channel and you have to connect the corresponding analog signal cable in the ANALOG IN1 plug. The amplifier must be patched like this: All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 27: Sound Velocity
Q factor - for all filters except shelving – in 0.1 steps from 0.1 to 30 the shelving slope from 3 to 15 dB/oct 3.10.3.2 Q/Bandwidth, Q/Gain and shelving slope dual mode input All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 28: Low-Pass And High-Pass Filters
This menu allows the user to reverse the signal polarity. 3.10.3.5 Channel delay This menu allows two different transducers to be time aligned. The selectable delay varies from 0 to 30 ms in 10.4us steps. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 29: Gain
1.5 ms. When FIR filters are activated; the limiter look-ahead feature is deactivated to preserve the overall 2.0 ms latency. Peak Limiter All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 30: Advanced
For example, if you use a 10 meters cable for powering the subs, you will add a parasitic series resistance (0.3 ohm for example). By enabling the damping control, you can add a negative resistance that compensates the cable resistance. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 31: 3.10.3.9.2 Filters Definition
The same applies for “CH1+2, copy CH2=>CH1”. 3.11 How to Setup a crossover For example, midrange on CH1 and high frequency driver on CH2. Edit CH1, go to LP Filter, set Active=ON All material © 2010 Martin Audio Ltd. Subject to change without notice... - Page 32 Set Frequency = 2000 Hz Set Shape=Linkwitz-Riley (You could also experiment with shape=FIR) Set Slope=24dB/oct. Edit CH2 Go to HP Filter, set Active=ON Set Frequency = 2000 Hz All material © 2010 Martin Audio Ltd. Subject to change without notice...
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Page 33: Setup A Bridged Configuration
MA Control Manager Overview Both the standard and DSP versions of the MA12K may be remote controlled from a PC using the MA Control Manager software which may be downloaded from the Martin Audio website;- http://www.mauserguides.com.red-square.net/Ampsoft/ContMan.pdf The application may be used to control many amplifiers, particularly in an installation environment and offers a host of extremely useful programming and monitoring facilities. - Page 34 This is particularly true of the DSP versions of the MA-K series amplifiers where the additional functions can be easily accessed All material © 2010 Martin Audio Ltd. Subject to change without notice...
- Page 35 The software can even be configured to e-mail or send an SMS message in the event of a specified fault condition such as an impedance or temperature error. All material © 2010 Martin Audio Ltd. Subject to change without notice...
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Page 36: Turn-On/Turn-Off Muting
MA12K & 12K DSP amplifiers. 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 37: Maintenance
There are no user-serviceable parts in your MA12K & 12K DSP amplifier. Refer servicing to qualified technical personnel. If your MA12K & 12K DSP amplifier needs repair, contact your Martin Audio dealer or distributor. Dust removal Particularly in dusty environments, the front side filters clog with dust and dirt after prolonged use, this will interfere with cooling. -
Page 38: Warranty
4 (four) 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 39: Technical Notes
Technical notes Block diagram The illustrations below show the output stage block diagram and the power supply block diagram. All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 40: 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 41: Specification
8Ω Bridged…………………………………………………………………………………………………...……8000W 4Ω Bridged……………………………………………………………………………………………………..12000W Max output voltage……………………………………………………………………………………………….…200V Max output current………………………………………………………………………………………………...…85A FEATURES Display…………………………………………………………………………………. LCD matrix interactive display Indicators…………………………………………………………..……2 x Multi-function 7 segment LED bargraph Data Storage and Transfer…………............…………………Smart Card Reader All material © 2010 Martin Audio Ltd. Subject to change without notice... -
Page 42: Technical Drawing
Technical Drawing All material © 2010 Martin Audio Ltd. Subject to change without notice...