Troldtekt speakers

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Troldtekt ® speakers Integrated sound PRODUCT INFORMATION TROLDTEKT SPEAKERS

description

Troldtekt speakers are integrated and concealed in the Troldtekt ceiling. No visible cabinet speakers or wires, rather architectural purity and clear lines. Troldtekt speakers are based on modern technology ensuring top-quality sound reproduction. At the same time, the Troldtekt panels provide optimum acoustics in the room, distributing the sound clearly and comprehensibly without any disturbing reverberation.

Transcript of Troldtekt speakers

Page 1: Troldtekt speakers

Troldtekt® speakersIntegrated sound

PRODUCT INFORMATIONTROLDTEKT SPEAKERS

Page 2: Troldtekt speakers

2 > TROLDTEKT SPEAKERS

Troldtekt speakers are integrated and concealed in the Troldtekt ceiling. No visible cabinet speakers or wires, rather architectural purity and clear lines. Troldtekt speakers are based on modern technology ensuring top-quality sound reproduction. At the same time, the Troldtekt panels provide optimum acous-tics in the room, distributing the sound clearly and comprehensibly without any disturbing reverberation.

This is an elegant and discreet sound experience for office environments, cafés and theatres, railway stations and airports – and, of course, for your living room.

Read more about Troldtekt speakers on the following pages and take inspiration from the two case studies – the office building Harbour House designed by Kim Utzon and the Gammel Rye parish com-munity centre designed by CUBO.

Enjoy!

Troldtekt®

speakers– integrated sound

Troldtekt speakers .............................................................2

Technology background ................................................3 Good sound coverage

Dimensions .......................................................................... 4-5 Speakers

Subwoofers

Case studies .........................................................................6-7 Harbour House

Gammel Rye parish community centre

Service ............................................................................................8

About us .......................................................................................8

Published by: Troldtekt A/S 2013

Photos: Thomas Mølvig and Martin Tørsleff

Design: www.ineo.dk

Text: www.publico.dk, www.pressential.co.uk

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Technology background

GOOD SOUND COVERAGE

Troldtekt speakers are integrated in Troldtekt acoustic panels, so you will not notice the speakers in the ceil-ing – but you will hear them.

A Troldtekt speaker is a Troldtekt acoustic panel with

a specially developed NXT panel integrated and con-

cealed in the actual Troldtekt panel. An NXT panel

is a complete flat speaker unit which transforms

electrical impulses into vibrations which are in turn

transformed into sound waves. The sound waves

pass through the Troldtekt panel and are distributed

throughout the room.

It is important for good sound experience that the

sound reaches every corner of the room. In traditional

speaker systems, the sound is emitted from a few

points, often resulting in the experience that the sound

pressure is high and close to the speakers but then

quickly subsides to become weak in the most remote

corners. In other words, the sound is unevenly distri-

buted throughout the room. For example, this situation

is familiar in airport terminals and railway stations,

where you need to be close to the speakers to be able

to understand any messages.

In a Troldtekt acoustic ceiling with integrated speakers,

the speaker panels are evenly distributed over the en-

tire ceiling surface, which ensures sound signals of

uniform volume throughout the room. Traditional cabi-

net speakers often offer directional characteristics of

approximately 75 degrees whereas the speaker panels

in a Troldtekt acoustic ceiling have directional charac-

teristics exceeding 170 degrees. This ensures that the

sound signal from the acoustic panels is evenly distrib-

uted across the entire ceiling surface and always within

hearing range. This also means that the sound pressure

may be generally lower than in traditional systems

where it may be necessary to turn the volume up espe-

cially loud to make sure that the signals reach every

corner.

170˚ 170˚

75˚ 75˚ 170˚ 170˚

75˚ 75˚

To ensure optimum sound reproduction in the bass spectrum, we have developed a special subwoofer. The low subwoofer height of only 13 cm (+ 5 cm for connection cables) enables placing of the subwoofer above the ceiling panel or e.g. under a sofa.

Troldtekt speakers can be connected to regular amplifier equipment with radio, CD, iPod or mixer/microphone systems.

On the back of the NXT panel is a flat cassette which protects it against dust, impacts, gnawing mice and other threats.

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DimensionsTo achieve an optimum sound experience in a room, it is important for speaker units and subwoofers, if any, to be dimensioned correctly in relation to the room in question.

DIMENSIONING – SPEAKERS

Several factors affect the sound experience in a room

and must be taken into consideration when calculating

the quantity and distribution of speaker panels in the

ceiling, to ensure as uniform a sound pressure as possi-

ble. Troldtekt will be happy to provide advice on dimen-

sioning of speaker units and to carry out measure-

ments for project planners.

Some of the factors affecting dimensioning are:

Speech intelligibility and sound pressure distribution

Room geometry, particularly the ceiling height

Room reverberation time

Background noise

Speech intelligibility and sound pressure

distribution

A high level of speech intelligibility requires a good

sound system and good room acoustics with a low

reverberation time.

A Troldtekt acoustic ceiling ensures optimum sound

absorption with a low reverberation time in the room.

Furthermore, the NXT technology ensures that speech

emitted from the speaker panels is perceived clearly

and distinctly.

Geometry

At ceiling heights from 2.5 - 8 m, it would be sufficient

to have one speaker panel approximately every 30 sq

m to ensure optimum speech intelligibility and good

sound pressure distribution. At ceiling heights below

2.5 m, it may be necessary to increase the number of

speaker panels to ensure good sound pressure distri-

bution, while at ceiling heights above 8 m, it may be

necessary to increase the number of speaker panels. In

situations with smaller requirements for sound pres-

sure distribution or speech intelligibility, the number of

speaker panels can be reduced.

Reverberation time

The longer the reverberation time in the room, the

fewer speaker panels are required to ensure a suffi-

cient sound pressure. However, a longer reverberation

time will reduce the speech intelligibility so you should

therefore strive to reduce the reverberation time below

0.6-0.9 seconds, depending on the nature of the job.

The Troldtekt ceiling has high sound absorption and

efficiently reduces the reverberation time in the room.

Background noise

For PA systems in particular, it is important that the

sound system signal is clearly differentiated from the

background noise. One way of obtaining this is to

ensure a sufficiently high sound pressure to drown out

background noise. Alternatively, you can ensure that

the sound is evenly distributed throughout the room

so that disturbing background noise does not act as a

barrier between the sound source and the listener.

Speakers as decorationTroldtekt speakers can also be combined with Troldtekt decoration and are then delivered as framed wall panels.

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DIMENSIONING – SUBWOOFERS

Subwoofers ensure optimum reproduction of the low

bass frequencies below 200 Hz. For systems designed

to play music, it is important for achieving good sound

that the quantity of subwoofers is correct. Normally,

one subwoofer should be provided every 60-120 sq m.

As directional determination of the low bass frequen-

cies is difficult, the requirements for even distribution

of the speaker panels does not apply to subwoofers.

For PA systems, which do not require the same bass

volume as music systems, the number of subwoofers

can be reduced – or possibly be eliminated

entirely.

In our library at www.troldtekt.com, you can find installation

instructions for Troldtekt speakers, and also installation

instructions for the various types of Troldtekt ceilings.

At ceiling heights from 2.5-8 m, it would be sufficient with one speaker panel approximately every 30 sq m to ensure optimum speech intelligibility and good sound pressure distribution.

Sound pressure is the generally used method for measuring the power of sound volume. The range perceivable by the human ear – from weak to power ful sound pressure – is enor-mous, which is why the decibel scale (dB) is typically used. 0 dB is the weakest sound perceivable by the ear, while the most powerful sounds register around 120-130 dB.

Sound pressure and dB

The reverberation time is an expres-sion indicating how fast sound dies away in a room, e.g. clapping your hands. Specifically, it is the time (in seconds) that passes from the end of the sound impulse until the sound level has dropped by 60 dB.

Reverberation time

Speech intelligibility indicates how well speech is perceived in a room – either directly in the room with a speaker and a number of listeners, or via a sound system with a micro-phone, amplifier and speakers. In its classic form, speech intelligibili-ty is measured by counting how many words are correctly perceived from a text read by an articulate speaker. If the listeners perceive 60% of the words correctly on average, the speech intelligibility is 60% or 0.6.

Speech intelligibility

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The U-shaped Harbour House

opens its arms towards the

water. The 8,600 sq m struc-

ture is one of the long list of

buildings designed by architect

MAA Kim Utzon. Many of these

are located on Copenhagen’s waterfront but Utzon’s

touch is also strongly evident in Helsingborg, Sweden

and Aalborg, Denmark. Harbour House is the joint

headquarters of three shipping companies and the

house activities are therefore highly port-related.

With so many offices and such intense meeting activity,

the acoustic environment plays a significant role in the

building, which is why Troldtekt has been used to

dampen sound in most rooms.

A series of new features

To ensure good sound and distribution allowing every-

one to hear the speaker, the conference rooms are

fitted with concealed Troldtekt speakers.

„We used several new features in Harbour House,

For one thing, we used integrated, concealed speakers

in the Troldtekt ceilings, which fit in nicely with the

Harbour HouseOpen arms at the port

One of the major construction challenges today is to make good acoustics, architecture and aesthetics come together in synergy. Troldtekt acoustic panels with inte grated, concealed speakers ensure good acoustics and good sound reproduction while presenting the ceiling as a clean, unbroken surface. In our inspirational section at www.troldtekt.com, you can find a number of exciting case studies and pictures – here are a few examples:

building’s overall expression. The sound is just there

and there is no visible equipment to disrupt the simple

look of the ceilings”, says Kim Utzon.

The architect’s own offices are also on the water-

front, at Nordre Toldbod, where he has created an

inspiring base for his staff of 14.

Troldtekt in the signature

Kim Utzon’s buildings are characterised by a clear choice

of simple materials that harmonise perfectly with the

overall architectural design. The supporting structures

are often visible concrete elements – columns, beams

and T-panels – combining to create a flexible and

extendable building system that has proved suitable

in many situations. Kim Utzon has also chosen to use

cement-bonded wood wool in many of his buildings,

making Troldtekt an important element in his architec-

tural signature.

Harbour House is the fifth element in the series

that Kim Utzon has dubbed ‘Nolli’. This structure forms

an urban whole inspired by Giambattista Nolli, who

charted Rome around 1750.

Prime location and architecture characterises Harbour House, headquarters for three shipping companies. The building forms part of the ‘Nolli’ series, designed by Kim Utzon.

Client: Harbour House A/S

Architect: Kim Utzon Architects

Engineer: Wessberg A/S

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Saint Soren’s parish com-

munity centre is located

next to Gammel Rye church

– a beautiful and elevated

location in the Central Jut-

land Lake District. Whereas

the church itself dates back

to the 15th century and the

brick tower was erected in 1912, the parish community

centre is newly built. The house was designed by the

architectural firm Årstiderne Arkitekter A/S with great

reverence for the history of this location but also with

a present-day twist to show that we are now in the

21st century.

Multi-purpose room

The most important room in the parish community

centre is the confirmation candidate schoolroom which

fits well in the entire structure with its large corner

window facing the church. The room is used for teach-

ing, lectures, choir singing and other activities.

„Naturally, this places considerable demands on the

acoustics in the high-ceilinged room. We therefore

chose Troldtekt, because in our experience this is the

Gammel Rye parish community centreMulti-purpose room with sound in every corner

The new parish community centre in Gammel Rye, Denmark, is rooted in history and the Troldtekt ceilings fit in well with the building’s rustic character. Acoustic ceilings with integrated, concealed speakers ensure good acoustics and good sound reproduction in the confirmation candidate schoolroom, which also serves many other purposes.

best acoustic panel and the sound properties of

Troldtekt are well suited for a multi-purpose room

such as this”, says architect MAA Anders Kærsgaard

from the Årstiderne Arkitekter architectural firm.

Rustic expression with concealed sound

To provide the best possible sound experience in the

large room, four speakers are integrated in the ceiling

panels. This conceals the speakers and the sound pass-

es through the Troldtekt panels on its way into the

room. This allows the sound to be distributed to every

corner of the room without the speakers being visually

dominant.

The lobby and administration office also have

Troldtekt ceilings and a solution with integrated lighting

in the panels has been selected for this area.

„Troldtekt is a rustic material and is therefore a

perfect match for the white-washed walls, the laminat-

ed wood beams and the wide floorboards. The church

council was not easily persuaded because cement-

bonded wood wool has a history of use for ceilings

in livestock buildings. However, now that the building

is finished, the logic is clear to them and they are very

satisfied with the project”, adds Anders Kærsgaard.

Client: Gammel Rye church council

Architect: Årstiderne Arkitekter A/S

Engineer: Søren Jensen A/S

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www.troldtekt.com provides a clear overview of the

many Troldtekt acoustic solutions. Using our product

generator, you can also download accompanying

AutoCad drawings, a description of the product range

and detailed installation instructions for the chosen

solution. The website also contains lots of inspiration,

among other things a number of reference pictures,

case studies and articles about trends.

Service

About us

International distributors

Technical advice

We are happy to provide technical advice for construction

professionals. We provide advice on Troldtekt acoustic

solutions and associated products, including the dimen-

sioning of Troldtekt speakers and we also carry out light

and sound calculations for project planners.

Troldtekt A/S has produced Troldtekt acoustic ceiling

and wall panels since 1935 at Troldhede in central

Denmark. During this time, the product has undergone

continuous development and refinement.

Details of our international distributors are available on

www.troldtekt.com. They either stock our Troldtekt

products or can obtain them for you. Please contact

The result is a range of products which are tested

to meet today’s ever increasing demands for good

acoustics in a wide variety of buildings.

Troldtekt A/S

Sletvej 2A

8310 Tranbjerg J

Denmark

Tel: + 45 8747 8100

Fax: + 45 8747 8111

Email: [email protected]

www.troldtekt.com

our distributors for general information, brochures

or data sheets. You are, of course, also welcome to

contact Export sales at our Head Office in Denmark.