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MPA1-BD
Audio
Monitoring
Unit
Handbook
TSL Products
Units 1-2, First Avenue, Globe Park, Marlow, Bucks, SL7 1YA
Telephone +44 (0)1628 564610
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EC DECLARATION OF CONFORMITY
Application of Council Directives Nos:
EC Low Voltage Directive (73/23/EEC)(OJ L76 26.3.73)(LVD).
Amendment: (93/68/EEC) (OJ L220 30.8.93).
Conformity Standards Declared:
EN 60950
EMC Directive: 89/336/EEC, Amended 92/31/EEC.
Conformity Standards Declared:
EN 50081-1: 1992- EMC- Generic Emissions, Part 1.
EN 50082-1: 1997- EMC- Generic Immunity, Part 1.
EN61000-3-2: 1995- Current Harmonic Emissions.
EN61000-3-3: 1995- Voltage Fluctuations & Flicker.
Manufacturer’s Name: Television Systems Ltd
Manufacturer’s Address: Vanwall Road
Maidenhead SL6 4UB
England
United Kingdom
Type of Equipment: Powered Loudspeaker Unit
Model No: MPA1-BD
Part Number: TSLP- MPA1-BD
Date CE Mark Affixed: 4/2/08
I, the undersigned, declare that the equipment specified above conforms to the
quoted Directives and Standards.
Place: Maidenhead, England Signature:
Date: Print: R CHAMBERS
Position: PRODUCT MANAGER
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Installation.
Unless otherwise stated TSL equipment may be installed at any angle
or
position within an operating temperature range of 5° - 30° C .
All TSL equipment conforms to the EC Low Voltage
Directive:
EC Low Voltage Directive (73/23/EEC)(OJ L76
26.3.73)(LVD).
Amendment: (93/68/EEC) (OJ L220
30.8.93).
In all cases the chassis of the equipment must be earthed on
installation.
The external power supply provided with this product may be one of
two
types:
1. A Class 2 double insulated type with a ‘figure of eight’ mains
input
connector.
2. A Class or Level 3 type with an IEC mains input connector.
This
type offers a functional earth and NOT A SAFETY EARTH via
the
earth pin of the IEC mains input connector to the outer of the of
the
co axial power
connector.
All metal panels are bonded
together.
The supplied PSU is of a universal voltage type and does not have
an
accessible fuse. The PSU may be mounted in a bracket attached to
the
rear
panel.
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WARRANTY, MAINTENANCE AND
REPAIR
All TSL equipment is guaranteed for one year from the date of delivery
to
the customer’s premises. If the equipment is to be stored for a
significant
period, please contact TSL concerning a possible extended
warranty
period.
Failure during warranty
If any TSL product should fail or become faulty within the warranty
period,
first please check the PSU and
wiring.
All maintenance work must be carried out by trained and
competent
personnel.
If equipment has to be returned to TSL for repair, please observe
the
following
overleaf:
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TSL Returns Procedure
Please telephone +44 (0)1628 564610 and ask for Support who will provide a Returns Number.
This will enable us to track the unit effectively and will provide some information prior to the unit
arriving. Please do NOT return faulty equipment without first obtaining a returns number as this is
likely to result in a delay in the repair of the equipment.
For each item, this unique Returns Number must be included with the Fault Report sent with the
unit.
A contact name and telephone number are also required with the Fault Report sent with the unit.
Fault report details required.
• Company:
• Name:
• Address:
• Contact Name:
• Telephone No:
• Returns Number:
• Symptoms of the fault (to include switch setting positions, input signals etc):
Packing
Please ensure that the unit is well packed as all mechanical damage is chargeable. TSL
recommends that you insure your equipment for transit damage.
The original packaging, when available, should always be used when returning equipment..
If returned equipment is received in a damaged condition, the damage should be reported
both to TSL and the carrier immediately.
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Contents
1.0 Introduction
2.0 Front Panel Controls
2.1 Volume control
2.2 Input select
2.3 Phase Indicator
3.0 General Notes
4.0 Scale and Reference Level Setup
5.0 Specifications
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1.0 Introduction
The MPA1-BD is a 1RU x 200mm deep audio monitoring unit with
two
switched analogue, two AES inputs and intended for use as a close
field
monitor.
The following features are
standard:
•
Two switch selectable stereo analogue
inputs.
•
Two switch selectable AES
inputs
•
Headphone output with automatic loudspeaker
muting.
•
Two 26 segment
bargraphs.
•
EBU Digital and UK PPM
scales
•
Phase
indication.
2.0 Front Panel Controls
2.1 Volume Control
Allows the loudspeaker or headphone volume to be
varied.
2.2 Input Selection, rotary switch
1 – 2 AES inputs one and
two.
3 – 4 Stereo analogue I/Ps. A1 (Left Channel)
and
A2 (Right
Channel).
2.3 Phase Indicator
This is a non latching push switch with Red/Green
LED.
The LED indicates a phase error when red. Pressing the non
latching
push switch momentarily reverses the
phase.
3.0 General Notes
•
Please note that some American equipment has the function of
the
XLR pins 2 & 3
reversed.
•
TSL product is wired to the European
standard.
•
Temperature Sensor. When the unit becomes over heated the
phase
LED blinks for 30 seconds and the unit will turn off. It
will
automatically
reset when the unit
cools.
•
It is recommended that the unit is secured into a rack for
optimum
performance.
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4.0 Scale and Reference Level Setup
The MPA1-BD allows the displayed scale and digital reference level to
be
set from the front panel. The unit may display either an EBU Digital
or
PPM scale and the reference level for the AES inputs may be set
from
-15dBFS to
-24dBFS.
To enter the setup mode, the phase button must be held
down
continuously for about 7 seconds. After this time, the phase indicator
will
change to an orange colour, the meters will change to a static display
and
the loudspeakers will
mute.
At this time the meters will display the current setup of the unit. If no
change is desired, a brief press on the phase button will return the unit
to
normal
operation.
Once in the setup mode, the input selector switch chooses between
four
options which will be displayed on the left
meter:
•
EBU Digital with Peak Hold
(default)
•
EBU Digital without Peak
Hold
•
PPM with Peak
Hold
•
PPM without Peak
Hold
The meter type is indicated by the orange level indicator being adjacent
to
the respective scale reference. The peak hold is indicated by a red bar
at
the top of the
display.
The right hand display indicates the AES reference level in dBFS. This
is
indicated by the orange marker being adjacent to the EBU scale
marker
for
the relevant level. The reference level may be changed by moving
the
volume control. The available reference levels
are:
•
-15dBFS
•
-18dBFS
(default)
•
-20dBFS
•
-22dBFS
•
-24dBFS
Note that the lack of a scale line at -15dB means that the -15dBFS case
is
indicated at -16dB on the front panel
scale.
Once a suitable setup has been found, the selection may be stored
by
once more holding the phase button down for approximately 7
seconds,
after which the unit will return to normal
operation.
The MPA-1BD may also be returned to factory default settings by
pressing
and holding the phase button for greater than 30
seconds.
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5.0 MPA1-BD Technical Specifications
Power
Supply
Supply Voltage 12v DC
Power Consumption Less than 30
Watts
Physical
Dimensions
Height 44mm
(1RU)
Width 19” Rack
Mount
Depth
200mm
Weight 6 kg
Analogue Inputs 1 and 2
Connector Type XLR Female 3 pin. Pin 1 Ground, Pin 2
hot,
Pin 3
cold.
Signal Balanced line level
audio.
Impedance
>20kΩ
AES Inputs 1 and 2
Connector type XLR Female 3 pin. Pin 1 Ground, Pin 2
hot
Standard AES3 (1994) at 48kHz, 44.1kHz or
32kHz
Impedance 110 ohm –
balanced.
Headphone
Output
Connector Stereo jack socket (A
gauge)
Impedance 47 ohm source for 8 to 600 ohm
load
Output Through level control with 0 dB
gain
Performance
Response 120Hz to
20KHz
Electrical Distortion Better than
0.1%
Hum and noise Better than
-80dB
SPL >85dB at 0.6
m
Total Power Output 20
watts
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