S30D Digital Monitoring SystemS30D Digital Monitoring System
S30D Digital Monitoring System
S30D Digital Monitoring SystemS30D Digital Monitoring System
Main features:Main features:
Main features:
Main features:Main features:
AES/EBU digital audio and analog audio
inputs in a single speaker system
Digital audio thru
96 kHz / 24-bit digital audio interface
50 kHz audio output bandwidth for
monitoring of 96 kHz digital audio
Automatic detection of word length and
sampling rate
Perfect level match throughout the system
from D/A converter to power amplifier
outputs
Standard sound level conversion
High system integration
SYSTEM
The Genelec S30D is a three-way
Digital Monitoring System including a digital audio interface, balanced analog audio input, loudspeaker drivers, speaker enclosure, multiple power amplifiers
and active, low level crossovers.
All these are carefully aligned and
housed within the loudspeaker
cabinet.
Featuring a 96 kHz/24-bit digital
audio interface and a proprietary
ribbon tweeter capable of reproducing up to 50 kHz acoustic
output, the S30D is a no compromise design. The fast, low distortion amplifiers are capable of driving a stereo system to peak output levels in excess of 122 dB
SPL at 1 m with program signals.
Versatile crossover controls allow for precise matching of the
speaker system to different
acoustic conditions. Designed for
relatively small control rooms and
available in vertical and horizontal versions, this system is ideal
for multichannel digital workstations, mastering work, general
purpose broadcasting and television studios, post production
facilities and mobile recording
vehicles. The high output and
absolute reproduction accuracy
make the S30D an ultimate
nearfield monitor in recording studios.
DIGITAL AUDIO
The quality of a digital audio signal is defined by two parameters:
word length and sampling rate.
The word length defines how precisely the audio signal is represented. Studio recording systems use word lengths of 20 bits
and above, typically 24 bits.
The sampling rate determines
what frequencies can be represented in the digital audio signal.
A higher sampling rate allows
higher frequencies to be recorded.
Converting the digital presentation to an analog signal involves
potential sources of error. The
digital-to-analog converter may
have inferior performance. It may
be misaligned with the amplifiers.
The interface between the converter and the amplifier may distort the signal or it may change
the frequency balance. Genelec
S30D solves all of these problems. The alignment of the whole
system is carefully balanced to
ensure precise monitoring of the
digital signal.
INTEGRATED
CONSTRUCTION
As the digital interface and amplifiers are built into the speaker
enclosure, the only connections
required are the mains supply
and the digital (or analog) input
signal, making the S30D very
easy to set up and use.
The rugged amplifier is mounted
into the enclosure with vibration
isolators which act also as quick
release hinges making possible
maintenance operations very
easy and straightforward. The
S P E A K E R
C A B I N E T
P o w e r
S u p p ly
c i r c u i t s
T r e b le
M i d r a n g e
B a s s
M a i n s I n p u t
A n a l o g
i n p u t
D i g i t a l
i n p u t
D i g i t a l
t h r u
D i g i t a l
I n t e r f a c e
D i g i t a l L e v e l
L e v e l C o n t r o l
D r i v e r
p r o t e c t i o n
c i r c u i t s
C R O S S O V E R
F I L T E R
A c o u s t i c
c o n t r o l s
P o w e r
O n / O f f
M u t e
P O W E R
A M P L I F I E R S
N e g . o u t p u t
i m p e d a n c e
c i r c u it s
The block diagram showing the digital interface, active crossover
filters, power amplifiers and driver units.
speaker cabinet is constructed
AMPLIFIERS
of veneered MDF, which is heavily
braced to eliminate structural
resonances.
The bass, midrange and treble
amplifiers each produce 120 W of
short term power with very low
DIGITAL INTERFACE
THD and IM distortion. Special
attention is paid to electronics
The digital audio interface consists of a digital audio receiver
and a digital-to-analog converter
(D/A converter). The digital input
accepts an AES/EBU digital audio signal having a word length
up to 24 bits. With an impedance
adapter, the S30D can also ac-
design to obtain the best pos-
sible subjective sound quality.
The output impedance of the
woofer amplifier is negative to
improve acoustic transient re-
sponse. Drivers and amplifiers
are also protected for thermal
overload.
cept SP-DIF signal. Digital thru
allows the digital audio signal to
DRIVERS
be re-transmitted to other S30D
loudspeakers and digital audio
equipment.
The 210 mm ( 8") woofer is loaded
with a 24 liters (0.85 cu.ft.) vented