Mach M20.06 User manual

M20.06 Controller
user manual

Measurements are in millimeters
1 2 3 4 5 6
A B
M20.06 System Processor
M20.06 System Processor
44
433
200
3
480
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, with-
out permission in writing from Martin Professional A/S, Denmark.
Printed in Denmark.
P/N 35020002, Rev B

3
Introduction.....................................................................................5
Safety information............................................................................................................. 5
Compliance..................................................................................................................6
Quick start......................................................................................7
1 - Connect AC power..................................................................................................7
2 - Attach audio connections........................................................................................7
3 - Access pre-loaded program settings ......................................................................7
Installation......................................................................................9
Power................................................................................................................................ 9
Voltage setting .............................................................................................................9
AC power fusing...........................................................................................................9
Mains power connection ............................................................................................10
Mechanical installation.................................................................................................... 10
Controls........................................................................................11
Input section ................................................................................................................... 11
Store/Recall keys.......................................................................................................11
RIGHT/LEFT keys......................................................................................................11
RIGHT/LEFT/UP/DOWN access keys.......................................................................11
Main display...............................................................................................................11
Input meter.................................................................................................................11
Output section................................................................................................................. 12
Mute LED...................................................................................................................12
Mute key.....................................................................................................................12
Output meter..............................................................................................................12
Rear panel ...................................................................................................................... 12
Mains power input......................................................................................................12
RS-232 connector......................................................................................................12
6 band outputs ...........................................................................................................12
2 channel inputs.........................................................................................................13
Operation......................................................................................14
Moving about the screens............................................................................................... 14
Utilities menu .................................................................................................................. 14
Stereo link..................................................................................................................15
Delay units .................................................................................................................15
Lock out......................................................................................................................15
MIDI channel..............................................................................................................15
Contrast......................................................................................................................15
MIDI dump..................................................................................................................15
Delete program ..........................................................................................................16
Inputs menu.................................................................................................................... 17
Delay..........................................................................................................................17
EQ..............................................................................................................................17
Outputs menu ................................................................................................................. 17
Name..........................................................................................................................17

4
Source........................................................................................................................18
Band gain ...................................................................................................................18
Limiter threshold.........................................................................................................18
Delay ..........................................................................................................................18
Delay link....................................................................................................................18
Polarity .......................................................................................................................19
Low Xover ..................................................................................................................19
High shape .................................................................................................................19
High Xover..................................................................................................................19
EQ ..............................................................................................................................20
EQ screens ..................................................................................................................... 20
Adding a new EQ .......................................................................................................20
EQ shape ...................................................................................................................20
Frequency ..................................................................................................................20
Cut/Boost....................................................................................................................20
Width (BELL only) ......................................................................................................21
Store and recall............................................................................................................... 21
Storing........................................................................................................................21
Recalling.....................................................................................................................22
System Security........................................................................... 23
Program lock................................................................................................................... 23
Lock mode....................................................................................................................... 23
Specifications............................................................................... 24

Introduction 5
I NTRODUCTION 1
Thank you for selecting the Martin 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. Each preset offers carefully optimized crossover points and
slopes, polarity, delay and EQ settings to exactly fit the individual
characteristics of each Mach loudspeaker.
SAFETY INFORMATION
Read this manual before powering or installing the fixture, follow the safety
precautions listed below and observe all warnings in this manual and on the
fixture. If you have questions about how to operate the fixture safely, please
contact your Mach dealer.
This product is not for household use.
Do not removed the covers. There are no user-serviceable parts inside.
Refer all servicing to qualified service personnel.
This equipment must be earthed.
Use only a source of AC power that complies with local building and
electrical codes and has both overload and ground-fault protection.
Do not removed any of the protective earth, or signal cable shield,
connections. Such action is against recommended practise and will render
any EMC or safety certification void.

6 Introduction
Compliance
The M20.06 has been tested and found to comply with the following
European and international Standards for Electromagnetic Compatibility
and Electrical Safety:
For continued compliance with international EMC legislation ensure that all
input and output cables are wired with the cable screen connected to Pin 1
of the XLR connectors. The input XLR Pin 1 is connected to the chassis via
a low value capacitor, providing high immunity from ground loops whilst
ensuring good EMC performance.
Radiated
Emissions (EU) EN55013 (1990)Associated Equipment
RF Immunity (EU) EN50082/1 (1992)RF Immunity, Fast
Transients ESD
Mains
Disturbance (EU) EN61000/3/2 (1995)
Electrical Safety
(EU) EN60065 (1993)
Radiated
Emissions (USA) FCC part 15
Class B
Electrical Safety
(USA) UL813/ETL (1996)Commercial Audio
Equipment
Electrical Safety
(CAN) UL813/ETLc (1996)Commercial Audio
Equipment

Quick start 7
Q UICK START 2
1 - Connect AC power
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. (This will be either the
last program recalled before the unit was switched off, or, in the case of a
unit with no stored programs, the default: 1 UNUSED)
2 - Attach audio connections
Connect the inputs and outputs as required. All inputs and outputs are
electronically balanced, with Pin 2 hot signal (+ve). Do not put any audio
through the unit at this time.
3 - Access pre-loaded program settings
The pre-loaded programs supplied in version 230701 are:
Program #: Supports
1 M12T and M182T
2 M15T and M182T
3 M30T and M182T
4 M154i and M182T or i
5 M129i and M182T or i
6 M156i and M182T or i
7 M12T full range ch 2+3+5+6
8 M15T full range ch 2+3+5+6
9 Slingshot 3 Way passive XO stereo. MS1262, MS118
10 Slingshot 4 Way mono. MS1262, MS118
11 Slingshot 5 Way mono. MS1262, MS15X2, M182T or MS118.
12 Slingshot 5Way mono. MS1262, MS15X2, Ballister SUB
13 M1502T active x 3 input A.
14 M1201T active x 3 input A.

8 Quick start
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. Programs marked with the letter Mare Master
programs and have been designed to match the different Mach speaker
systems.
Note: It is very important that your settings have the right gain
structure depending on the amplifier size and manufacturer you
are using.
For optimizing the system with regard to gain and time alignment between
subwoofers and top boxes, the SIA Smaart Live program is very useful. If
you use SmaartLive, you can download some Smaart starting point set-ups
from the following Internet address and save them on the M20.06:
http://www.mach.dk/accessories/SmaartLive_M20.06_settings.zip
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
Program #: Supports

Installation 9
I NSTALLATION 3
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. Outside these
ranges the unit will not work satisfactorily, if at all. Voltages in excess of the
maximum will probably cause damage. Voltages below the minimum will
cause complete system shutdown. The flash memory in the M20.06 will
preserve all data in the event of a power failure.
AC power fusing
The green-and-yellow wire of the mains cord must always be connected to
an installation safety earth or ground. The earth is essential for personal
safety as well as the correct operation of the system, and is internally
connected to all exposed metal surfaces. Any rack framework into which this
unit may be mounted is assumed to be connected to the same grounding
circuit.
The incoming mains power is fused within the M20.06 by the fuse holder
mounted on the rear panel. Always replace with an identical 20mm x 5mm
'T' fuse, rated at 1A for continued protection from equipment damage and
fire.
It is for safety reasons that this specification is strictly adhered to.

10 Installation
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.
MECHANICAL INSTALLATION
A vertical rack space of 1U (1¾" / 44.5 mm high) is required. Ventilation
gaps are unnecessary.
If the M20.06 is likely to undergo extreme vibration through extensive road
trucking and touring, it is advisable to support the unit at the rear and/or
sides to lessen the stress on the front mounting flange. The necessary
support can generally be bought ready-built as a rack tray. As with any low-
level signal processing electronics, it is best to avoid mounting the unit next
to a strong source of magnetic radiation, for example, a high power
amplifier, to help keep residual noise levels in the system to a minimum.

Controls 11
C ONTROLS 4
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.
RIGHT/LEFT keys
Controller keys for editing parameters displayed on the LCD screen.
RIGHT/LEFT/UP/DOWN access keys
Controller keys for moving between screens to access different parameters
to edit.
Main display
The main LCD screen displays current parameters being edited.
Input meter
Input signal level referenced to the clip level. Actual signal clipping will occur
slightly above the 'clip' indicator.

12 Controls
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 power input
The Power inlet for the M20.06. Note that there is no On/Off switch for the
unit.
RS-232 connector
For connection to a PC for access to one or more units on a MIDI loop,
which provides an easy way to upload new software.
6 band outputs
The audio outputs are electronically balanced and floating.
Transformer balancing is available as a retrofit option.
Pin 1 Shield/Ground
Pin 2 Signal Hot (+)
Pin 3 Signal Cold (-)
2
1
3

Controls 13
2 channel inputs
The audio inputs on the M20.06 are electronically
balanced. Transformer balancing is available as a retrofit
option.
Pin 1 Open circuit
Pin 2 Signal Hot (+)
Pin 3 Signal Cold (-)
1
23

14 Operation
O PERATION 5
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.
MOVING ABOUT THE SCREENS
Use the:
•UP/DOWN access keys to move between Default, Utility, Input and Output menus
(Horizontal columns).
•RIGHT and LEFT keys to move along each menu.
• Parameter UP/DOWN keys to adjust a parameter. (When adjusting a value,
pressing a key once will usually give a small increment/decrement whilst holding a
key down will give a larger increment/decrement).
Moving to a new menu may not bring up the first screen shown in each row,
as the unit remembers, and moves you to, the last screen accessed in each
menu.
Store and Recall are accessed by pressing their respective keys.
UTILITIES MENU
Pushing the RIGHT key while viewing the default screen will move you into
the Utilities menu. The RIGHT and LEFT keys are used to move along the

Operation 15
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. 'ms'
represents milliseconds, 'ft' represents feet (and feet and inches for short
delays), and 'm' represents metres.
Lock out
The Lock Out mode prevents access to editing functions on the input and
output channels. Since this utility is not password-protected, Lock Out can
still be accessed and turned off. This mode is intended only as a precaution
against accidental adjustments, and not as a tamper-proof security lock.
MIDI channel
Here, you can select the MIDI channel that the unit is assigned to (Channels
1 through 16 are available).
Contrast
This allows you to change the contrast of the LCD display.
MIDI dump
This utility allows you to dump the current program settings to another unit,
or a MIDI storage device for backup, or for the purpose of synchronizing a
pair of units for stereo operation. Performing a MIDI dump will completely
overwrite all programs in the receiving device (Rx), including the current
program, with those from the sending device (Tx). If you are using the MIDI
Dump to transfer data to another unit via MIDI ensure that both devices are
set to the same MIDI channel, and connect either the MIDI OUT of the Tx
device to the MIDI IN of the Rx device. Alternatively, the M20.06 can be
linked via their RS232 ports.

16 Operation
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.
Note that all units connected via MIDI port will only be synchronized after a
MIDI dump has been performed. Units connected via RS232 do not require
a MIDI dump in order to synchronize, but if a MIDI dump is not performed,
each unit will contain different stored programs and current program settings
until changes are made to each setting individually on the Tx unit).
The default position for the MIDI dump screen is MIDI DUMP: NO. Use the
Parameter UP/DOWN keys to select YES on the Tx unit, then press STORE
at the prompt, to confirm the dump. A percentage complete figure on the Tx
screen will show how much data has been transferred. The Rx screen will
read Warning! Incoming Dump. When the dump is complete, the Tx screen
will default to NO. The Rx screen will display the name of the new current
program.
Notes that all parameter edits in all stored programs will be overwritten in
any CUSTOMER UNIT set to the same MIDI channel. Use MIDI Dump with
care!)
Delete program
This facility allows any stored program to be removed from the unit. Use the
Parameter UP/DOWN keys to select the desired program, and press
STORE to confirm deletion.
Note that programs marked Mcannot be deleted from USER units.
Protocol Tx Rx Sync. Status
RS232 PCPort Multi -
RS232 PCPort PCPort -
RS232 Multi Multi -
RS232 Multi PCPort -
RS232 Master Multi Synchronized
RS232 Master PCPort Synchronized
MIDI Multi Master -
MIDI Master Master Synchronized after
dump.

Operation 17
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.
The delay on each input channel can be adjusted individually, in 22
microsecond steps by pushing the Parameter UP/DOWN keys. (Holding a
Parameter UP/DOWN key down will increment/decrement the amount of
delay in larger steps). This delay is typically used to set the delay for delay
towers etc., or to stagger the delays between the left and right channels to
'move' sound lobes in an installation.
Delays can be viewed and adjusted in metres (default), feet/inches, or
milliseconds.
Note that the maximum delay value is restricted by any delay on an output
that is fed by the current input.
Input delay and output delay for any signal path is limited to 630ms.
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).
OUTPUTS MENU
To select any of the output bands, press the UP/DOWN keys until the output
is shown on the screen.
Name
The first screen in the Output menu is the Name function. Here you can
identify each output with a name suitable to its function, selecting from a list
of names in the unit, such as SUB, or 2" HORN. Use the Parameter
UP/DOWN keys to select the desired name. If the name selected while

18 Operation
stereo is NOT linked begins with L<space> or R<space>, 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.
Band gain
Adjusts the output gain from -25dB to +4dB using the Parameter UP/DOWN
keys.
Limiter threshold
The band limiter threshold can be adjusted between -20 to +10dBu in 0.2
dBu steps by pushing the Parameter UP/DOWN keys to set the desired
value to match the sensitivity of the amplifier in use. Setting the limiter
thresholds below the amplifier clipping sensitivity by about 2dB is
recommended. This prevents any transient overshoot driving the amplifier
into clip and so damaging your loudspeakers. Threshold setting also
determines the output meter sensitivity.
Delay
The output delays are most often used to electronically align the driver voice
coils with the other drivers in the system, so the sound sources are coherent
to the listener.
Each increment is only 22 microseconds, which translates in physical terms
to a distance of 6.8mm
Delay link
The Delay Link option allows you to control several band delays with a
single adjustment. This means that once all the drivers in a single cabinet
have been aligned, the whole cabinet can be delayed relative to the input
signal, or another cabinet, by linking these band delays as one. Any offsets
applied before linking will be retained after linking. In the Delay Link screen,
Use the Parameter UP/DOWN keys until the desired linking configuration is
shown. In:
• Mono configuration, 1 will link to 2, 2 will link to 3 etc.
• 2-channel 3-way configuration, 1 will link to 3, 3 will link to 5, 2 will link to 4
and 4 will link to 6.

Operation 19
• 3-channel 2-way configuration, 1 will link to 4, 2 will link to 5 and 3 will link to
6.
Polarity
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. The band edge will be highlighted on
the graphic on the screen.
The available filter types are as follows, in this order:
• Butterworth 12dB /Octave
• Linkwitz-Riley 12dB Octave
• Butterworth 18dB / Octave
• Butterworth 24dB / Octave
• Linkwitz-Riley 24dB / Octave
• Butterworth 48dB / Octave
• Linkwitz-Riley 48dB / Octave
Pushing the Parameter UP/DOWN keys will scroll through the above list.
Low Xover
The lower edge (high-pass) of the crossover band can be set over a wide
frequency range from OUT (no roll off) through 15Hz to 16kHz. Pushing the
Parameter UP key will increase the frequency, with OUT as the final step.
Pushing the Parameter DOWN key will increase the frequency, to the final
clockwise position OFF, which mutes the output.
High shape
Selects the Edge filter type and slope as for the higher (low-pass) band
edge.
High Xover
This function works in a similar way to the Low Xover, except that OUT is the
last step at the clockwise position.
Pushing the Parameter UP/DOWN keys will decrease the frequency, to the
final clockwise position OUT, which DOES NOT mute the output.

20 Operation
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.
Adding a new EQ
If you press the RIGHT key and the screen does not change, then you have
reached the last EQ currently in use. To add an EQ, the cut/boost of the
highest EQ must be edited. Another EQ (assuming there are spare EQs) will
then be inserted automatically.
NOTE: The A+B signal is summed after the EQ sections on A and B, so the
A+B signal is affected by A and B EQ.
EQ shape
The shape of the EQ can be selected from one of the following by pushing
the Parameter UP/DOWN keys:
• Hi shelving with 6dB slope (Hi6)
• Hi shelving with 12dB slope (Hi12)
• BELL
• Low shelving with 6dB slope (Lo6)
• Low shelving with 12dB slope (Lo12).
Frequency
Pushing the Parameter UP/DOWN keys adjusts the EQ frequency. The filter
position is shown graphically by the cursor, and the Frequency of EQs can
range between 15Hz and 16kHz.
Cut/Boost
Pushing the Parameter UP key to add boost (+ gain) or DOWN for cut (-
gain). Cut/boost is available between +15dB and -15dB, in 0.2dB
increments.