AKG MP 40 User Manual download pdf (Page 76)

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As regards planning, technology, and monito-

ring, wireless installations in opera houses pose

a particular challenge. Unfailingly high sound

quality and "invisible" installation of the com-

ponents are basic requirements for offering the

audience a unique auditory experience.

Structural issues pose much greater difficul-

ties: as a rule, opera houses are historic buil-

dings subject to strict conditions with regard to

constructional alterations. And the numerous

backstage rooms, such as dressing rooms,

maintenance passages etc. are an environment

that is rather hositle to RF propagation. Above

all, however, there is one feature typical of

many opera houses: the so-called “iron cur-

tain” that separates the stage and auditorium.

A massive metal wall, it completely blocks

radio signals when lowered.

In our case, we needed a 46-channel system

centrally controlled from the control room. The

stage was approx. 70 m (230 ft) away from the

control room and had to be covered with the

minimum possible number of antennas.

Besides, the transmitters in the dressing room

had to be operational, so that the correct func-

tioning and level settings could be tested prior

to showtime.

The system uses two passive directional anten-

nas placed close to the control room to cover

the stage. Antenna combiners connect two

omnidirectional booster antennas in the dres-

sing room, which receive the radio signals from

behind the stage. This ensures perfect trans-

mission and monitoring of all transmitters even

during intermissions, when the iron curtain is

lowered.

EXAMPLE: 46-CHANNEL SYSTEM FOR AN OPERA HOUSE

WMS 4000 46-CHANNEL SETUP

High-tech for pure enjoyment

Every opera or theater audience has a right to enjoy excep-

tional artistic performances and excellent sound. Therefore,

microphones and wireless components must not only work

perfectly but be more or less invisible in order not to disrupt

the visual appeal of the stage set and performers. The com-

pact WMS 4000 and AKG MicroMics provide the ideal com-

bination for this type of application.

46 x SR 4000 True diversity receiver

Specification:

Amount Item Description

25 x CU 4000 Charging unit

46 x HT/PT 4000 Handheld or portable transmitter

12 x PS 4000 Antenna splitter

18 x PSU 4000

Central power supply unit

2 x RA 4000 B Booster antenna

2 x SRA 2B Active wideband directional antenna

8 x ZAPD 21 Antenna combiner

AKG WMS PRACTICAL EXAMPLES

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