Genelec S-30-D Owners manual
Genelec S30D
Operating
Digital Monitoring System
Manual
S30D Digital Monitoring System
1. General description1. General description
1. General description
1. General description1. General description
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.
2. Digital audio2. Digital audio
2. Digital audio
2. Digital audio2. 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 per-
formance. 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.
3. Integrated construction3. Integrated construction
3. Integrated construction
3. Integrated construction3. 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 speaker cabinet is constructed of veneered MDF, which is
heavily braced to eliminate structural
resonances.
Digital interfaceDigital interface
Digital interface
Digital interfaceDigital interface
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 accept SP-DIF signal. Digital thru allows the digital audio signal to be retransmitted to other S30D loudspeakers and digital audio equipment.
Crossover filtersCrossover filters
Crossover filters
Crossover filtersCrossover filters
The crossover frequencies of the active crossover network are 420 Hz
and 4 kHz. Special calibrated controls are included in the crossover to
reach uniform frequency balance in
different acoustic conditions. A high
pass filter is included in the LF channel to protect the woofer from subsonic signals. Variable level control
allows for accurate level matching to
the digital or analog signals.
AmplifiersAmplifiers
Amplifiers
AmplifiersAmplifiers
The bass, midrange and treble amplifiers each produce 120 W of short
term power with very low THD and IM
distortion. Special attention is paid to
electronics design to obtain the best
possible subjective sound quality.
The output impedance of the woofer
amplifier is negative to improve
acoustic transient response. Drivers
and amplifiers are also protected from
thermal overload.
DriversDrivers
Drivers
DriversDrivers
The 210 mm (8") woofer is loaded with
a 24 liters (0.85 cu.ft.) vented cabinet. The woofer has a very large magnet and a long linear excursion capability. These are needed to reproduce low frequencies with high efficiency and acoustic output (SPL) in a
small enclosure. The -3dB point is 35
Hz and the low frequency response
extends down to 31 Hz (-6dB).
A carefully designed 80 mm cone
driver, sealed in a cast aluminum alloy housing, reproduces the critical
midrange frequencies where the ear
is the most sensitive. To minimize
coloration the diaphgram is specially
impregnated. As a result, the
midrange driver’s response actually
extends well beyond the range required by the crossovers.
The high frequency driver is a proprietary ribbon tweeter with a moving
mass of only 32 mg and frequency
response extending up to 50 kHz.
The dispersion characteristics of both
the tweeter and midrange driver are
matched for constant tonal balance
in different rooms.
4. Installation4. Installation
4. Installation
4. Installation4. Installation
Every Genelec S30D is delivered with
a mains cable and an Operating Manual. Signal cables are not included.
After unpacking, check that the mains
voltage selector (see figure 2) is correctly set for your local mains volt-
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