Opus LD Series User manual

Class D Loop Amplier - LD Serie
2-channel low loss amplier
EN Installaon and user manual
LD 1.2 / 2.2 / 3.2

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Table des maères
Manual EN ..........................................................................................................19
1. Introducon.......................................................................................................20
1.1 Purpose ..........................................................................................................20
1.2 Targeted audience.........................................................................................20
1.3 Alert ...............................................................................................................20
1.4 Icons...............................................................................................................20
1.4.1 Icons et notes...............................................................................................20
1.4.2 Aenon, warning and danger incons ........................................................20
1.6 Conversion tables ..........................................................................................21
2. Descripon ........................................................................................................22
2.1 The range.......................................................................................................22
2.2 Contents.........................................................................................................22
2.3 OP-R...............................................................................................................22
2.4 Safety note.....................................................................................................23
3. Controls, connecons and sengs ..................................................................24
3.1 front panel and sengs..................................................................................24
3.2 Connecons ....................................................................................................25
4. racking ...............................................................................................................26
4.1 Venlaon and racking....................................................................................26
4.2 racking .............................................................................................................26
4.2.1 One amplier...............................................................................................26
4.2.2 Two ampliers .............................................................................................26
4.2.3 On a wall ......................................................................................................27
5. Installaon ........................................................................................................28
5.1 Two LD .2 ampliers connecon .....................................................................28
5.2 For the use of a large cover system.................................................................28
5.3 LD .2 and LD .0 ampliers connecon.............................................................29
5.4 For the use of a large cover system.................................................................29
6. Explicaon........................................................................................................30
7. Specicaons ....................................................................................................31

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1. Introducon
1.1 Purpose
The Installaon and Operaon Manual provides
the necessary informaon for installing, congu-
ring and using an LD serie amplier.
1.2 Targeted audience
The Installaon and Operaon Manual is in-
tended for installers and users of LD serie ampli-
er.
1.4 Alerts
This manual discusses four types of alerts.
The type of alert is closely related to the eect
that may occur if the alert is not observed.
These alerts, ranked in ascending order of seve-
rity, are as follows:
• Note
Addional informaon. Generally, the non-
observance of a Note type alert does not result
in any material or bodily injury.
• Aenon
Failure to observe a cauon alert may result in
property damage.
• Warning
Non-compliance with a type alert Warning may
result in serious personal injury and property
damage.
• Danger
Failure to observe a danger alert may result in
death.
1.5 Icons
1.5.1 Icons et notes
Icons used with notes provide addional infor-
maon about the note. See the following
examples:
1.5.2 Aenon, warning and danger icons
The icons used in combinaon with Aenon,
Warning and Danger indicate the type of risk
present. See the following examples:
Note:
General icon of notes
Note:
Symbol referring to the source
indicated informaon.
Aenon, warning, danger:
Electrocuon risk icon.
Aenon, warning, danger:
the general icon of precauonary state-
ments,
Aenon, warning, danger:
Electrostac discharge risk icon.

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1.5 Conversion tables
In this manual, SI units are used to express leng-
ths, masses, temperatures etc.
These can be converted to non-metric units
using the following informaon.
Table 1: lenght units conversion
Table 2: Mass units conversion
Table 3: Pressure units conversion
Table 4: temperature units conversion
25,40 mm = 25,4 mm 1 mm = 1,00000
25,40 mm = 2,54 cm 1 cm = 0,3937 po
30,48 cm = 0,3048 m 1 m = 3,281 pd
1 ml = 1,609 km 1 km = 0,622 ml
1 lb = 0,4536 kg 1 kg = 2,2046 lb
1 psi = 68,95 hPa 1 hPa = 0,0145 psi
Note:
1 hPa = 1 mbar
° F = 9 /5. ( ° C + 32 ° C = 5 /9. ( ° F 32)

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2. Descripon
The proposed inducon loop amplier range
consists mainly of Opus Technologies amplier
developed and manufactured in France, but also
products from the leading brands in the ma-
gnec loop eld such as Contacta and Current
Thinking.
With our know-how and in-house development
we bring to our customers the most complete
range of the French market.
2.1 the range
The new LD 1.2, 2.2 and 3.2 of the Opus Tech-
nologies range are next-generaon, French-
made magnec loop ampliers. The ampliers,
robust, are the most compact on the market
while oering the necessary features (AGL,
MLC, compressor, ... etc) to ensure installaon
of a room ranging from 250m² to 1000m²:
 LD 1.2 covers 300 to 600 m²
 LD 2.2 covers 525 to 1200 m²
 LD 3.2 covers 1000 to 2000 m²
2.2 Content
Package Content:
 LD 1.2, 2.2 or 3.2 amplier
 Power cord
 2x 3-points connectors
 2x 2-points connectors
 1x 2-points connectors
 A set of sckers « space adapted for the
hearing impaired »
 A Installaon and use guide
 1x jack 6.35 Stéréo
 OP-R (oponnal)
2.3 OP-R (oponnal)
OP-R content:
 2x rack mounng brackets
 2x brackets
 8x xing screws

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2.4 Safety note
The majority of problems with the magnec in-
ducon loop (BIM) happens when the installa-
on has not been properly reected so let's
take a lile me before starng the installaon
and gain in result and me.
Ideally, the loop amplier should be placed near
the area to be covered. This may involve placing
the amplier on a panel, under a desk or under
a table.
The pickup microphone should be as close as
possible to the input of the amplier.
To posion the loop in the space to be
equipped, it is important to take into account
the future users of the system.
For example, if you only need to plan the spea-
ker and the client, a loop around the desk may
be a beer soluon rather than a loop around
the perimeter of the room. It will limit radiaon
and increase condenality.

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3. Commands, Connecons and Sengs
3.1 Front and adjustment
1. «protect »LED, fault synthesis display
2. «Loop » LED, loop presence
3. Current output seng
4. Input 3 seng (100V)
5. Input 2 seng (Line or microphone)
6. Input 1 seng (Line or microphone)
7. ON/OFF push buon
8. «Clip » LED, display saturaon amplier
9. «Power » LED, ON/OFF display
10. Meter input signal
11. Adjustment MLC (Metal Loss Compensaon)
helps reduce the problems of interference to me-
tal structures.

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3.2 connecons
14. Input 1 combo: microphone or line
15. Push buon for line or microphone communica-
on of the input 1
16. Push buon for line or microphone communica-
on of the input 2
17. Phoenix type 2 terminal block input: microphone
or line
18. Phoenix type 3 terminal block input: priority 100V
19. Input 0 ° or 90 °
20. 0 ° or 90 ° output to slave amplier
21. Serial number label
22. Connecng power cords
23. Phantom power selecon switch
24. NO / NC fault synthesis relay
25. Loop input on terminal block Phoenix type

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4. Racking
4.1 Venlaon and racking
Leave a space of 1U (44mm) above the amplier
Leave a space of at least 168 mm between the
boom of the rack and the amplier
4.2 Rack integraon
4.2.1 Integraon of a rack amplier
Opon required: OP-R mounng kit
Secure the rack mounng brackets as shown to
the right using the mounng screws provided in
the kit.
Then integrate the amplier into the bay.
4.2.2 Integraon of two rack ampliers
Opon required: OP-R mounng kit
Secure the rack mounng brackets as shown to
the right using the mounng screws provided in
the kit.
Then, aach the ampliers to each other using
the brackets.
Finally, integrate the ampliers into the rack.
Aenon, averssement, danger:
LD1 / 2 / 3.2 ampliers contain an ad-
vanced protecon circuit, which allows
them to reduce the power output to
maintain safe operang temperatures. Insucient
venlaon may cause the amplier output power to
be reduced during normal operaon (indicated by
the red LIMITER / PROTECT LEDs lighng up). To re-
duce the risk of thermal limitaon and allow proper
heat dissipaon, it is recommended to keep clear
the space directly above and behind these ampli-
ers.