TSL MPA1-BD User manual

MPA1-BD
Audio Monitoring
Unit
Handbook
TSL Products
Units 1-2, First Avenue, Globe Park, Marlow, Bucks, SL7 1YA
Telephone [phone]

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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 [phone] 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 Fr
on
t 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 >20k Ω
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