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Teufel
·
Theater 2
Glossary
Active subwoofer
Loudspeaker with integrated amplifier for the reproduction of
bass frequencies. Very low frequencies can only be reproduced
by large-size speakers. To permit a speaker system with compact
front speakers, the bass frequencies are handled separately by
a dedicated subwoofer unit. As bass frequencies travel largely
non-directionally, the subwoofer can be placed out of sight,
e.g., behind the couch or under a coffee table. The crossover
frequency between the front speakers and the subwoofer var-
ies from system to system, but is usually somewhere between
50 and 120 Hertz.
Auto On/Off function
The Auto On/Off function activates the subwoofer when an audio
signal is detected at the input, and switches it off again after a
set time of inactivity (approx. 20 minutes).
Centre
The central loudspeaker of the home theatre system. Surround
sound for TV/film places most of the dialogue in the centre
speaker. Because of this, excellent reproduction of speech is a
vital quality of the centre speaker.
Cinema set
“Cinema sets” are all Teufel speaker systems that consist of
three direct-radiating front speakers and dipole effects spea-
kers. “Concert sets”, in contrast, consist of five direct-radiating
speakers.
Concert set
“Concert sets” are all Teufel speaker systems consisting of five
direct-radiating speakers. “Cinema sets”, in contrast, consist of
three direct-radiating front speakers and dipole rear speakers.
Dipole
Dipole loudspeakers radiate sound in two directions. This makes
them ideal as rear speakers in home theatre systems, as their
radiation pattern mimics the loudspeaker arrangement in com-
mercial cinemas. In a cinema setup, the rear audio channels are
reproduced by several speakers that spread the sound around
the room. Dipole speakers are designed to radiate sound in-
directly so that it cannot be easily located. This distinguishes
them from direct-radiating speakers.
Direct-radiating speaker
All conventional loudspeaker cabinets that directly radiate
the sound at the listener are described as “direct-radiating
speakers”. In home theatre systems, direct-radiating speakers
are primarily used for the sound channels of the three front
speakers. In Teufel's Concert sets, they are also used for the
rear channels.
Dolby Digital/DTS decoder
An electronic circuit to split digital multi-channel audio signals
from DVDs into up to seven separate signals.
'Dolby Digital” and “DTS” are different audio formats, so they
require different decoders. Most AV receivers, DVD players and
surround sound cards are equipped with both decoders.
Frequency / crossover frequency
The “crossover frequency” determines at which point in the fre-
quency range the bass frequencies are separated off to the sub-
woofer. For example, a crossover frequency of 120 Hz means that
all frequencies above 120 Hz are sent to the satellite speakers,
and all frequencies below 120 Hz are sent to the subwoofer.
Level
The “Level” control on the subwoofer determines the subwoof-
er's volume. In a perfect speaker setup, all the speaker channels
(including the subwoofer) are balanced in relation to the listen-
ing spot, i.e., all the speakers appear to have an equal volume.
Phase
The “Phase” control lets you adjust the subwoofer to the satel-
lite speaker so that the membranes of all the speakers vibrate in
the same direction (“phase”) when reproducing signals around
the crossover frequency. If the phase is set incorrectly, this may
cause a reduced bass response or even bass cancellations. If the
subwoofer is positioned between the front speakers, we recom-
mend a phase setting of 0°; if the subwoofer is positioned closer
to the listening spot, a phase of 180° may be more appropriate.
Similarly, the 180° setting may help to eliminate bass cancella-
tions if you position the subwoofer in other areas of the room.
Always set the phase control to the position where the bass
response is best.
Rear speaker
The rear speakers (≥ dipole or ≥ direct-radiating) mostly re-
produce effects and atmospheric sounds. This creates a much
more spatial sound field when playing back film sound and
music.
Sub Out
Output on the receiver or amplifier to connect an active sub-
woofer using a mono cinch cable.
5.1/7.1 Pre Out
Preamp outputs on the receiver, or DVD player outputs. An ana-
log audio signal (cinch connection) is provided for each chan-
nel.
6.1 / 7.1 surround sound format
In this surround sound format, the left and right rear speakers
are complemented by a centre rear channel. Depending on the
encoding format, this “Rear Centre” is either embedded into
the stereo matrix for the left/right rear channels and then ex-
tracted during playback (e.g., THX® Surround EX, Dolby Digital
EX), or it is transmitted as a separate signal (DTS Discrete). In
reference to the more widespread “5.1” surround format, these
formats are described “6.1”. Practice has shown that the best
surround results are achieved if the rear centre channel is re-
produced by not one but two centre rear speakers. Because of
this, AV systems that feature amplifiers and connections for two
rear centre speakers are described as “7.1”, although they are
technically only reproducing a “6.1.” signal.
Teufel
If you have any questions, suggestions or criticisms, please contact our support team:
No responsibility can be accepted for
the correctness of this information.
Subject to technical changes. Errors
and omissions excepted.
Lautsprecher Teufel GmbH
Gewerbehof Bülowbogen · Bülowstraße 66
10783 Berlin · Germany
Ph.: +49(30) 30 09 30 0
Fax: +49(30) 30 09 30 30
www.teufel.eu
