M20.
Measurements are in millimeters 433 200 3 480 44 A B 1 2 3 4 5 M20.06 System Processor 6 462 1 2 1 - AC power in 2 - Fuse (0mm x 5mm 'T' fuse, rated at 1A) © 2001 Martin Professional A/S, Denmark. All rights reserved. No part of this manual may be reproduced, in any form or by any means, without permission in writing from Martin Professional A/S, Denmark. Printed in Denmark.
Introduction..................................................................................... 5 Safety information ............................................................................................................. 5 Compliance .................................................................................................................. 6 Quick start ...................................................................................... 7 1 - Connect AC power...............................
Source ........................................................................................................................18 Band gain ...................................................................................................................18 Limiter threshold .........................................................................................................18 Delay ..........................................................................................................................
1 INTRODUCTION Thank you for selecting the Mar tin M20.06 Controller. The M20.06 Controller is a one unit loudspeaker management system, capable of operating all speakers in the Mach product range. This digital circuitry is based on BSS OMNIDRIVE™ DSP technology and comes equipped with 24-bit A-D and D-A converters. Fast and easy set-up of Mach speaker systems is ensured by 50 pre-set programs with settings for all Mach speaker models.
Compliance The M20.
2 QUICK START 1 - Connect AC po wer The M20.06 has a universal voltage AC Power input. Connect the unit to AC Power with the lead supplied. It will switch on automatically (there is no separate on/off switch). The display will show the default screen, with the name and program number of the current program.
Program #: Supports 15 M127i Passive and M152i. In A: 1+2. In B 3+4. In A+B 5+6 16 M154i Passive and M182i. In A: 1+2. In B 3+4. In A+B 5+6 17 M129i Passive and M182i. In A: 1+2. In B 3+4. In A+B 5+6 18 M156i Passive and M182i. In A: 1+2. In B 3+4 To access the pre-loaded programs: 1 Press RECALL. 2 Use the Parameter UP/DOWN keys to select the designated program. 3 Press RECALL again.
3 INSTALLATION This section describes how to mount the M20.06 Controller and how to connect it to AC power. POWER Voltage setting The M20.06 uses a switched-mode power supply which offers high efficiency and low heat generation. This power supply accepts universal AC Power input voltages in the range 100V AC to 240V AC (nominal), and requires no setting adjustment for AC power voltages in this range. Minimum AC input voltage is 90 Volts, and the maximum is 264 volts.
Mains power connection WARNING: The appliance must be earthed. The wires in the mains lead are color coded in accordance with the following code. The wire which is coloured: • Green and yellow, or green, must be connected to the terminal which is marked with the letter 'E' or by the earth signal or which is coloured green and yellow or green. • Blue must be connected to the terminal labelled 'N' or coloured black or blue. • Brown must be connected to the terminal labelled 'L' or coloured red or brown.
4 CONTROLS This section describes the physical interfaces to the M20.06 Controller. INPUT SECTION Store/Recall keys Program data can be stored to one of 60 internal memory locations using the Store facility. The STORE key also doubles as an ENTER key for confirmation of some actions. Program data is recalled to the unit from internal memory using the Recall facility. RIG HT/ LE F T keys Controller keys for editing parameters displayed on the LCD screen.
OUTPUT SECTION Mute LED Shows the mute status of the output band. Mute key Pressing a mute key will toggle the associated band output on and off. The mute LED is illuminated when the output is MUTED. Mute status is saved when a program is stored. Output meter Shows the output of each channel relative to the limiter threshold. REAR PANEL Mains pow er input The Power inlet for the M20.06. Note that there is no On/Off switch for the unit.
2 channel inpu ts The audio inputs on the M20.06 are electronically balanced. Transformer balancing is available as a retrofit option.
5 O PERATION The chapter describes: • • • • • • “Moving about the screens” “Utilities menu” “Inputs menu” on page 17 “Outputs menu” on page 17 “EQ screens” on page 20 “Store and recall” on page 21 After powering up, the unit performs internal checks and sets up the audio path before releasing the output mute relays. This takes a few seconds. When the unit is powered up the Default Screen is shown. This shows the current program name and number.
Utilities path, and the Parameter UP/DOWN keys are used to change the selected parameter. Stereo link This mode selects whether parameters will be adjusted together or independently on each channel. The stereo link pairs in: • 2-channel 3-way are 1 & 2, 3 & 4 and 5 & 6. • 3-channel 2-way are 1 & 3, and 4 & 6. Pushing the Parameter UP/DOWN keys selects Stereo Link: ON or OFF. Delay units This selects the units used for displaying and adjusting delays.
Each unit must be set to the correct MIDI mode, from a choice of Multi, Master or PCPort on the MIDI mode screen in the Utilities menu. The MIDI mode setting for each device will depend on the protocol used and whether synchronization between the units is required. Protocol Tx Rx RS232 PCPort Multi Sync.
INPUTS MENU There are two inputs available for routing to outputs plus an internal mono sum of inputs A and B, referred to as A+B. This gives the Input Channels: A, B, and A+B. The facilities described in this section are common to all inputs, except EQ, which is not possible on the mono sum A+B signal. Delay The first screen in the input menu is the Delay screen. Pressing the RIGHT key will access the EQ screens.
stereo is NOT linked begins with L or R, then the L or R will not be displayed when stereo linking is on. Source To change the source input, use the Parameter UP/DOWN keys until the desired input source is selected. Ban d gai n Adjusts the output gain from -25dB to +4dB using the Parameter UP/DOWN keys. Limi ter threshold The band limiter threshold can be adjusted between -20 to +10dBu in 0.
• 3-channel 2-way configuration, 1 will link to 4, 2 will link to 5 and 3 will link to 6. Po larit y The polarity invert function allows the phase of an output to be rotated by 180 degrees. Default is un-inverted. Pushing the Parameter UP key will invert the polarity of the output. Pushing the Parameter DOWN key will return the polarity of the output to un-inverted. This screen is used to select the filter type/shape for the lower band edge (high-pass) of the current output band.
EQ To add EQ to an input, step through the functions on the desired channel using the RIGHT/LEFT keys until you reach the screen that shows the EQ parameter you wish to edit. (See “EQ screens” on page 20 for more details). EQ SCREENS If the M20.06 is configured for MONO, all EQs will be mono. If configured for 2x2+1 ("stereo"), EQs will be marked as Stereo 'S' when STEREO LINK is ON, and the stereo marker will show an 'S' next to the EQ number. Available spare EQ filters are also shown.
Wi dt h (BE LL o nl y) Pushing the Parameter UP key widens the EQ (lower Q), pushing the DOWN key makes the EQ narrower (higher Q). EQ Width is available between 0.05 and 3 Octaves, in 0.05 increments. STORE AND RECALL Storing and Recalling a program can be done at any time using the STORE and RECALL keys on the left hand side of the LCD. The M20.06 can hold 60 programs inter nally. To reset a unit to default values, use the configuration parameter in the Utilities screen.
UNLOCKED?, asking whether the program should be stored with a Program lock on/off. Use the Parameter UP/DOWN keys to turn the Lock on/off, the default setting being ON. Once the Lock status is set, push the STORE key a final time to commit the program to memory. The display will now default back to the screen displayed before the STORE facility was accessed. To exit from the store screen without storing a program, press the RECALL button. Recalling Pressing the RECALL key will access the Recall screen.
SYSTEM SECURITY 6 Any changes made to an audio system have the potential to be damaging, even if only accidentally made. For this reason several different security systems are built in to the M20.06 to protect the speakers. Each of the security levels locks different groups of variables away from accidental or malicious adjustment. PROGRAM LOCK This is a flag that is available for each stored program.
A S PECIFICATIONS Dynamic Range . . . . . . . . . . . . . . . . . Typically 108dB, unweighted. 22Hz to 22kHz Noise Floor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -98dBu (default gain set -10dB) Frequency Response. . . . . . . . . . . . . . . . . . . <±0.25dB, 15Hz-20kHz with filters out Distortion (THD) . . . . . . . . . . . . . . . . <0.007%, 20Hz-20kHz @+10dBu input level Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 25
Martin Professional A/S Olof Palmes Allé 18, DK 8200 Århus N, Denmark Phone: +45 8740 0000, Fax: +45 8740 0010 URL: http://www.martin.
