Mustang M1008, M2508, M1008-D, M100-SD, M250-S User Manual
...
MUSTANG
COMMUNICATIONS
MACRO SYSTEM AMPLIFICATION
INSTALLATION, COMMISSIONING & MAINTENANCE
HANDBOOK
Issue No.6
SCOPE OF THIS ISSUE:
M/8M M8/M
M1008 M1008/D
M2508 M2508/D
M100/S M100/SD
M250/S M250/SD
Input modules
Standard options
Mustang Communications Ltd
Eastfield Industrial Estate
Scarborough
England
YO11 3UT
Telephone U.K. 01723 582 555
Telephone International 44 1723 582 555
Fax U.K. 01723 581 673
Fax international 44 1723 581 673
Email info@mustang.co.uk
Web www.mustang.co.uk
MACRO range installation manual. Issue 6
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MACRO range installation manual. Issue 6
Author: M. R. Tetley M. Inst. S. C. E.
________________________________________________________________________
INDEX
............................................................................................................................... page
Introduction ....................................................... ....................................................... 5
General specifications ............................................. ................................................. 6
Front panel controls and indicators ................................ .......................................... 6
Tone control & Master gain adjustment ............................. ..................................... 6
Input module system ............................................... ................................................ 7
Priority input facilities .......................................... ..................................................... 10
Pre-announcement chimes ............................................ .......................................... 12
Mixer facility connections - 0dB signal access point .............. ................................. 12
Power amplifier module ............................................ ............................................... 14
Loudspeaker output ................................................. ................................................ 14
Auxiliary output connections ...................................... ............................................. 16
Combining the loudspeaker outputs of two or more amplifiers .................................. 17
Power supply ...................................................... ..................................................... 17
Earthing & hum loops .............................................. ................................................ 20
Factory fitted options ............................................ ................................................... 20
- The Company and its quality statement ......................................... 5
- The MACRO system concept and applications ............................. 5
- module installation .......................................................................... 7
- module range .................................................................................. 7
- features & general specifications ................................................... 8
- input connections ............................................................................ 9
- module adjustments ........................................................................ 10
- priority/passive setting of modules ................................................. 12
- priority memory ............................................................................... 12
- 0dB signal in/out access for mixers & mixer amplifiers ................. 12
- input connections for slave amplifiers ............................................ 12
- tape recording ................................................................................. 13
- tape playback .................................................................................. 13
- interconnection of several amplifiers ............................................. 13
- typical loudspeaker load arrangements ......................................... 15
- Priority controlled DC current sinks ................................................ 16
- Chime duration monitor sinks (CDM) ............................................. 16
- 100V line output .............................................................................. 16
- 24V DC supply ................................................................................ 16
- AC mains power input ..................................................................... 17
- DC power input ................................................................................ 17
- Systems powered by both AC and DC supplies ............................ 17
- Main ON-OFF front panel switch .................................................... 17
- Error status indicator LED .............................................................. 19
- Power status indicator LED ............................................................ 19
- Power supply failure monitoring ..................................................... 19
- Power supply change-over ............................................................. 20
- Battery charger circuit ..................................................................... 20
- Free-standing case ......................................................................... 20
- Automatic level control ................................................................... 21
- Balanced line input for M/100 and M/250 slave amplifiers ............ 21
- Line surveillance ............................................................................. 22
Installation ...................................................... ......................................................... 22
Fuses .......................................................... ............................................................ 24
Faults - symptoms and check-list ................................. .......................................... 24
Repairs and maintenance ........................................... ............................................ 24
Warranty .......................................................... ....................................................... 24
- selection of signal input cables ...................................................... 22
- selection of loudspeaker cable ....................................................... 22
- fitting Locking DIN connectors ....................................................... 22
- siting ................................................................................................ 23
- ventilation ........................................................................................ 23
- interference ..................................................................................... 23
- removal of control knobs ................................................................ 23
- checklist .......................................................................................... 23
- free-standing case removal ............................................................ 24
- removal of main pre-amplifier circuit board ................................... 24
Electromagnetic compatibility (EMC) directive 89/336/EEC and amendment directive 92/31/EEC
This equipment has been designed and manufactured to the highest standards. If connected and operated as set out in this manual, there should be no
Electromagnetic Compatibility problems. If any aspect of operation gives rise to concern, then please contact the manufacturer for advice.
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MACRO range installation manual. Issue 6
PAGE
Table 1 The current range of input modules 8
Table 2 Module adjustments and settings 11
Fig. 1 Location of Treble, Bass, and Master gain controls 7
Fig. 2 Input connector pin identification 10
Fig. 3 Location of priority sequence setting switches 11
Fig. 4 Mixer facility connections for standard locking DIN connector 12
Fig. 5 Mixer facility connector pin identification 12
Fig. 6 Tape record and playback connections 13
Fig. 7 Interconnection of several amplifiers 14
Fig. 8 Power amplifier module fixings and adjustments 15
Fig. 9 Priority connections for multiple amplifier systems 18
Fig. 10 AC & DC supply connections and monitoring 19
Fig. 11 Balanced line input connections 21
Block schematic diagram APPENDIX A
Typical priority control and auxiliary arrangements APPENDIX B
Typical loudspeaker circuits APPENDIX C
Chassis layout & main component identification APPENDIX D
Locations of module adjustments and fuses APPENDIX E
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MACRO range installation manual. Issue 6
INTRODUCTION
Thank you for purchasing this unit. We are confident that you have made a wise decision, and that you will have many years of
trouble-free operation. Considerable care has been taken during the design and manufacturing processes to ensure your entire
satisfaction and naturally, we would hope that the unit will perform to our design expectations, though this will be possible only if
the installation is in line with professionally accepted standards and techniques.
This manual is intended, therefore, to ensure that both the installer and operator have all the necessary information to enable them
to install, commission, and operate the unit in the most effective manner. We hope you will find the manual helpful, and easy to
read.
The Company and its quality statement
Mustang Communications, is the manufacturing mark of equipment manufactured by Mustang Communications Limited, of
Scarborough, England. The company is independent, wholly British, and dedicated to the manufacture and distribution of highreliability, high performance public address and associated control equipment. Mustang Communications was first registered in
1966, in England.
The Company undertakes to manufacture equipment to the highest standards of workmanship and performance. Our Quality
Assurance scheme operates to, or exceeds, the standards set out in British Standard BS.5750, Part 2. 1987 or European
standard ISO.9002. If you have cause to doubt at any time that the manufacture, or distribution does not comply, then you are
invited to write to us with your comments, which will be most welcome.
Please address your correspondence to The Engineering Director.
The MACRO system concept and applications
MACRO System is a comprehensive range of AC mains and AC mains/24V DC amplification, controls and surveillance units and
associated peripherals, designed for use by emergency services and high integrity communication and alarm systems, manufactured
to the highest standards of electronic and mechanical performance and with Quality Assurance to British Standard BS.5750 AC/
DC equipment is designed to operate normally from 220/240V AC mains, with the capability to operate indefinitely, and without
loss of any facilities, from a standby DC power source (battery system) in the event of mains failure.
Full compatibility within the MACRO range is assured, thus easing system design and enabling fully integrated systems to be
specified using standard MACRO components and options.
The current manufacturing programme features a variety of 8 input mixers, 100 Watt and 250 Watt 8 input mixer amplifiers and
corresponding slave amplifiers, all offered in AC mains only or AC/DC format. AC/DC units provide full AC and DC power integrity
monitoring and indication, and all except mixers feature a trickle-charge circuit as standard. Mixer input versions accommodate
up to 8 modules, selected from the comprehensive range of microphone, line input and alarm tone generator modules. These are
plugged into an internal mother board system which generates 8 levels of ladder priority, equal access priority or any combination
of both. Priorities may be set up easily at system commissioning stage. The module circuits feature various aspects of memory
trigger, priority sinking for use with MACRO zone controllers, remote relays, system busy indicators etc., and such functions are
taken to a rear D connector. Each module is associated with a front panel gain control whose knob and spindle may be removed
at commissioning stage and replaced by a discreet blanking plug to discourage unauthorised tampering. Line driver and stabilised
low voltage PSU facilities are also on plug in modules. Treble and bass tone, and master gain adjustments are internal and presettable.
The amplifier power output stage is in the form of a self contained bolt-on pluggable module for ease of maintenance, and pre-set
adjustment for sensitivity, overload threshold, and bias are featured. Output devices are very robust bipolars and errors on the
module are notified by a front panel LED. Other front indicators are a segmented bargraph output VU, AC (and DC where
appropriate) supply input monitoring, and an illuminated power switch. A soft-start DC switch on circuit is employed. The transformers
employed in MACRO amplifiers are in-house designed and manufactured to the highest standards of tolerance and quality to
maximise the efficiency of the electronics.
Mechanically, MACRO amplifiers utilise a 3U 19" rack mount format with plated steel chassis, contoured aluminium alloy anodised
front/rear panels, chromed handles, nut and bolt fastenings, and connectors are tough locking DIN as standard for signals, D
connector for auxiliary control functions, IEC mains, and military specification 97 series DC input.
By appropriate choice of input modules, the MACRO range of equipment will perform with outstanding results in a multitude of
applications, and a few only are listed under:-
Factory paging, time signals and alarm amplification
Retail stores paging and background music
Theatre show relay and prompt calls etc.
Multi-zone exclusive paging using one amplifier
Shopping centre automatic spot announcements and
security paging etc.
Zoned fire alarm systems
In use the amplifiers will give trouble free and accurate performance, and failure or partial failure is likely to be a result of external
problems with loudspeaker or input cabling etc. The following pages will provide a guide to setting up, operation and maintenance
of the amplifier, but in case of difficulty it would be advisable to consult a qualified dealer or the manufacturer.
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MACRO range installation manual. Issue 6
GENERAL SPECIFICATIONS
MIXER AMPLIFIERS M1008 M2508
Input channels 8 8
Input channel level & response dependent upon input modules fitted
Treble & Bass adjustment ± 12dB @ 100Hz & 10kHz ref.1kHz
Power output (Watts RMS contin.) 100 250
Current sinks 250mA maximum, each channel module
Auxiliary DC output nominally +24V. 1A fused.
Mixer facility level 775mV nominal. 0dBV
Power amplifier input 775mV , 0dBV @ 10k ohms
Power amplifier power freq. resp. -3dB @ 20Hz & 20kHz ref. 1kHz, low imp
Loudspeaker matching 100V/50V line balanced
AC mains supply input 240V 50-60Hz +5% -15%
24V DC supply input (22-28V) 6 Amp 18 Amp
DC quiescent consumption (approx) 350mA 350mA
SLAVE AMPLIFIERS M100 M250
Power output (Watts RMS contin.) 100 250
Audio input level 775mV, 0dBV @ 10k ohms
Power amplifier power freq. resp. -3dB @ 20Hz & 20kHz ref. 1kHz, low imp
Loudspeaker matching 100V/50V line balanced
AC mains supply input 240V 50-60Hz +5% -15%
24V DC supply input (22-28V) 6 Amp 18 Amp
DC Quiescent consumption (approx) 250mA 250mA
MIXERS M8M M8M/D
M1008/D M2508/D
-3dB @ 20Hz & 15kHz ref. 1kHz, 100V
M100/D M250/D
-3dB @ 20Hz & 15kHz ref. 1kHz, 100V
Input channels 8 8
Input level & response dependent upon input modules fitted
Treble & Bass adjustment ± 12dB @ 100Hz & 10kHz ref.1kHz
Current sinks 250mA maximum, each channel module
Auxiliary DC output nominally +24V , fused 1A
Audio output level 775mV nominal. 0dBV
AC mains input 240V 50-60Hz +5% -15%
24V DC supply input (22-28V) 250mA (module dependent)
DC quiescent consumption (approx) 150mA
FRONT PANEL CONTROLS & INDICATORS
By design, user accessible controls are kept to a minimum to avoid inadvertent maladjustment which could render the system
ineffective.
Each input channel of a MACRO mixer or mixer-amplifier may be adjusted for gain by using the front panel controls. Should the
commissioning engineer deem it prudent, he may remove any of the complete control knob/spindle assemblies, after adjustment
is complete, simply by pulling the knob. The resulting holes may then be blanked off using the blanking plugs supplied. The
controls may be refitted at any time subsequently. Slave amplifiers to standard specification are not fitted with a front gain control.
An illuminated power switch controls AC power input (and if applicable, DC power input simultaneously).
A series of LED indicators provides a simple means of assuring the user of correct amplifier operation. A 10 segment ladder gives
an indication of output level expressed in decibels - i.e. dB relative to maximum output amplitude. Under normal programme
conditions this will fluctuate between the extreme left and extreme right segments in accordance with the amplitude of the programme
at any particular instant. No segment is illuminated when the amplifier output is zero. If the illuminated segment is predominantly
to the extreme right (maximum) then it is likely that the amplifier is being over-driven and that the resulting sound will be distorted
on peaks. Reduce the corresponding front input gain control accordingly.
A fast attack/slow decay circuit is used to drive the display so that amplitude peaks are recognised.
Two further LEDs indicate the status of the power supply in use, and of the power amplifier module where appropriate. For further
details see page 19.
TONE CONTROL & MASTER GAIN ADJUSTMENT
Tone control facilities are provided on the line driver module, type TB.6 which is located at second right, on a mixer or mixer
amplifier when viewed from the front. Two trimmer potentiometers are located at the bottom of the module, just above the edge
connection tabs. Viewed from the front, the nearest is the bass adjustment and the furthest is the treble. Each controls a cut & lift
correction circuit with the central position of the rotator giving nominally flat response. At the extremities of rotation, the corrections
are ± 12dB at 100Hz and 10kHz respectively. Rotate controls clockwise to increase the gain at bass or treble frequencies. On
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MACRO range installation manual. Issue 6
Fig. 1 Location of Treble, Bass, and Master gain controls
leaving the factory, the controls will be set for level response. See Fig. 1
A conventional master level control is featured on the mother PCB between the line driver module (TB.6 etc) and the pre-amplifier
stabiliser module (PS.9 etc.) next to it. This control is set to maximum (fully clockwise) on leaving the factory. See Fig. 1
INPUT MODULE SYSTEM
The general accent of MACRO system amplification is towards flexibility of system design. Each MACRO mixer or mixer amplifier
will accommodate up to 8 purpose designed input modules selected from over 30 variations of pre-amplifiers, tone signal and
alarm generators. Any of the modules from the published list may be used in any of the 8 input channels of the amplifiers.
Modules are available to accept audio input signals for low-level processing from all known audio sources. Depending on type,
each module may be given a priority within the amplifier as described below. The chosen group of modules is set up within the
amplifier by the commissioning engineer to exhibit the required sequence of priorities for the specific sound system, and further
individually adjusted on the module for sensitivity, tone frequency, etc. These system adjustments are not directly accessible to
the user, who is confined to the front panel controls. Modules may be changed, removed, or adjusted at any time without
disturbance to the general operation of the system. Where priority sinking is featured, two alternative sinks are offered simultaneously
- Any priority, and Individual input priority. Therefore, external circuits such as relays, lamps, MACRO zone control systems
etc., may be triggered by any input channel or a specific input channel (or channels) by appropriate auxiliary connections. A
Chime Duration Monitor circuit, where fitted, gives clearance-to-speak information for paging systems via the CDM current
sink connection of the auxiliary output. Priority sinks and CDM current sinks operate independently of each other. The general
concepts are illustrated in APPENDIX B
Module installation
MACRO range amplification is intended for permanent installation, and consequently the plug-in concept of the modules does not
anticipate continuous or regular changing of modules. Whilst this is possible, the edge connector contacts may wear prematurely
and become intermittent and unreliable. Modules are located between vertical supports immediately behind the respective front
panel volume control, and only moderate force will be required when fitting or removing. DO NOT put pressure on the components
during this operation.
Module range
The range of input modules extends to cover all common functions though others may be added to suit demand. The current
range is shown below.
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MACRO range installation manual. Issue 6
MICROPHONE & LINE INPUT MODULES
M24 Universal low impedance transformer balanced, priority/passive
M26 Low imp. transformer balanced, with priority, chimes and CDM
M28 Low impedance transformer balanced, audio operated priority
M30 Low impedance transformer balanced, priority/passive, phantom DC
L24 600 ohm transformer balanced priority/passive, 50mV - .775V
L25 10k ohm transformer balanced priority/passive, 50mV - .775V
L26 47k ohm transformer balanced priority/passive, 50mV - 80V
L27 600 ohm transformer balanced, priority, chime, CDM. 50mV - .775V
L28 10k ohm transformer balanced, priority, chime, CDM. 50mV - .775V
L29 47k ohm transformer balanced, priority, chime, CDM 50mV - 80V
L30 600 ohm transformer bal., audio activated priority, 50mV - .775V
L31 10k ohm transformer bal., audio activated priority, 50mV - .775V
L32 47k ohm transformer bal., audio activated priority, 50mV - 80V
L33 Aux unbalanced line, 50mV & .775V, priority/passive
L34 Aux unbalanced line, 50mV & .775V, priority, chimes (no CDM)
NON-PRIORITY MODULES
E26 RIAA equalised 5mV @ 50K for magnetic phono cartridge
Flat response, 80mV to 1V for ceramic phone cartridge
TONE GENERATOR MODULES
T24 1kHz sine wave generator, momentary triggering
T25 Time pips, with timer, priority hold & memory
T26 Repeating gongs with timer, priority hold & memory
T27 Alternating dee-dah alarm with timer, priority hold & memory
T28 Warble alarm with timer, priority hold & memory
T30 Trimphone telephone simulator, momentary triggering
T32 Triple chimes with timer, priority hold, & memory
T34 Slow whoop with timer & priority hold
Table 1 The current range of input modules
Module features & general specifications
MICROPHONE INPUT MODULES M24 M26 M28 M30
Transformer or Electronic balanced T T T T
Priority only or priority/passive option PP PO PO PP
Priority controlled current sink 4444
Chimes & Chime Duration Monitor sink 4
Phantom DC supply 4
Audio activated priority (VOX) 4
Bass cut facility 4444
GENERAL SPECIFICATIONS - MICROPHONE INPUT MODULES
Sensitivity range 100uV to 2mV
Input impedance Suitable for 200 ohm microphones
Frequency response -3dB points 20Hz - 20kHz
Bass cut response -3dB @ 200Hz -6dB @ 100Hz
Signal to noise ratio 58dB minimum
Input overload capability 50dB
Sink capability (mA max. continuous) 250mA
Phantom supply +15V via 1k0
VOX delay 3 seconds maximum
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MACRO range installation manual. Issue 6
LINE INPUT MODULES L24 L25 L26 L27 L28 L29 L30 L31 L32 L33 L34
Transformer input or unbalanced T T T T T T T T T U U
Priority operation only 444444
Priority/passive switchable 444 44
Sensitivity 50mV - .775V 44 44 44 44
Sensitivity 50mV - 80V 444
Input impedance (ohms) 600 10k 47k 600 10k 47k 600 10k 47k 4k7 4k7
Priority controlled sink 44444444444
Chimes 444 4
Chime Duration Sink 444
Audio activated priority (VOX) 444
GENERAL SPECIFICATIONS - LINE INPUT MODULES
Sensitivity range and impedance See above
Frequency response -3dB points 20Hz - 18kHz
Signal to noise ratio 58dB minimum
Input overload capability 50dB
Sink capability (mA max. continuous) 250mA
VOX delay 3 seconds maximum
TONE GENERATORS T24 T25 T26 T27 T28 T30 T31 T32 T34
Momentary or timed triggering M T T T T M T T T
Adjustable tone frequency 44444444
Priority hold for tone sequence 4444 444
Priority memory 4444 44
Adjustable duration timer 4444 444
GENERAL SPECIFICATIONS - TONE GENERATOR MODULES
Trigger switch requirements 1.5mA maximum @ +15V DC
Duration timer 2 - 30 seconds approx
Trigger memory capacity Indefinite
Sink capability (mA max. continuous) 250mA
MISCELLANEOUS MODULES E26
Function Magnetic phono pre-amp Ceramic phono pre-amp
Sensitivity 5mV@50k 80mV-1V @ 1M
Equalisation RIAA Flat
Input connections
Standard amplifiers are fitted with Locking 5 pin DIN input connectors on a 180 degree spacing pattern. See Fig. 2 below to
identify the pin numbers. The input connections will vary depending upon which module is being used in the corresponding
module position, as follows:
Balanced microphone & line input modules i.e. M24 to M30 and L24 to L32 inc.
Standard Locking 5 pin DIN -
Pin 1
Pin 3
Pin 2 Signal earth (cable audio shield)
Pin 4
Pin 5
Balanced input
Priority control (except audio activated modules)
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