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1035B
DATA SHEET
Genelec 1035B
Control Room Monitoring System
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Genelec 1035B Control Room Monitoring System
A
-
20th Century Fox Newman Scoring Stage, Hollywood
APPLICATIONS
Main Monitor For Large
Control Rooms
SYSTEM
The Genelec 1035B is an extremely powerful monitor system,
designed for large control rooms.
It consists of a 600 liters (21 cu.
ft.) speaker enclosure and a 19"
electronics rack, which contains
active crossovers, three channel
power amplifiers and sophisticated protection and diagnostic
circuitry. The speakers are designed for flush mounting in the
control room wall, although they
may be used free standing and
can produce peak sound pressure levels in excess of 136 dB.
Bass, midrange and treble controls are included to allow the
speakers to be matched to the
acoustic conditions in different
control rooms. The sensitivity of
the system to its environment is
minimized by the unique Directivity Control Waveguide (DCW)
Technology, which provides excellent stereo imaging and frequency balance even in difficult
acoustic situations. The system
can be used in both vertical and
horizontal orientations by simply
rotating the DCW unit.
PROTECTION CIRCUITRY
The Audio Processing Unit (APU)
which contains the crossover,
also contains diagnostic and protection circuits. These monitor the
amplifier channels for each driver
and will automatically reduce the
monitor's input gain, to protect a
driver from overload and distortion. Reducing the gain of the
entire monitor, rather than just that
of the overloaded channel, preserves its frequency balance. The
protection circuitry also guards
against DC, shorting and excessive temperature, and will take appropriate action to prevent damage. LED displays show the
system's condition in detail on the
APU front panel and in summarized
form on the loudspeaker enclosure.
AMPLIFIERS
The bass, midrange and treble
amplifiers produce 2 x 1100, 1 x
600 and 1 x 300 watts of short
term power, respectively, with
very low harmonic and inter-modulation distortion. The electronics
have been carefully designed to
ensure the highest subjective
sound quality currently possible.
Thermal protection is provided
for the amplifiers. A standard 5 m,
10 core cable is supplied for the
speaker connection. Longer
lengths are available on application.
DRIVERS
Bass frequencies are reproduced by two long throw 385 mm
(15") woofers in a vented, dual
chamber configuration giving a
frequency response extending
down to 20 Hz, with the -3 dB
point at 29 Hz.
The mid range frequencies are
reproduced by two 130 mm (5")
high sensitivity direct radiating
cone drivers and the high frequency driver is a 25 mm (1")
throat compression driver, with
an upper -3 dB point at 22 kHz.
udio Input
6 ... + 6 d B u
Balancd
1
M ains Inpu t
2
3
AUDIO PROCESSING UNIT
CROSSOVER FILTER
IN PUT AM PLIFIER
M ain Level
LOGIC CARD
DIAGNOSTIC PANEL
LED's
Fault - Treble
- M id
- B a s s
DC
C u r re n t lim it
Over temp.
S e lf d ia g n o s t ic s
Circuit
breaker
OPERATING PANEL
LED's
C lip
Clip - 3 d B
Tre b le - P ro te c tio n
- W a rn in g
M id - P ro te c tio n
- W a rn in g
Bass - Protection
- W a rn in g
Ready
CROSSO VER FILTER
EHF-CAL
BASS R OLL-O FF
Driver
Protection
Display
Driver
Power Supply
Control Logic
T-CAL
M-CAL
BASS TILT
Pow er S upply
circuits
15 K
RO LL O FF
B-CAL
TREBLE
LEVEL
MIDRANGE
LEVE L
BASS LEVEL
D riv e r /
A m p lifie r
Sensors
S tar t / sto p m ute
S ho r t pr o te ctio n
Display
Driver
POW ER AMPLIFIERS
300 W
600 W
1100 W
1100 W
CLIP
DC
SHORT
OVER TEMP.
SPEAKER CABINET
The block diagram showing active crossover filters, power
amplifiers and driver units.
The rack mounting amplifiers, with Audio Processing Units.
Treble
M idrange
M idrange
Bass
Bass
C L IP P R O T E C T
LED
C L IP W A R N IN G
LED
READY
LED
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Vertical mounting
Horizontal mounting
The mid and high frequency drivers have field replaceable diaphragms and are mounted in a
DCW.
SOFFIT MOUNTING
Soffit (flush) mounting of a loudspeaker removes problems
caused by diffraction effects and
reflections from the wall behind it:
Diffraction of sound at the loudspeaker cabinet edges degrades the transient response
and directional properties, while
reflections will cause interference,
potentially leading to large dips in
the frequency response. The use
of DCW Technology reduces
these effects to a large extent
and the 1035B has versatile
crossover controls to compensate for variations due to different
speaker positioning. This allows
it to be used either soffit mounted
or as a free standing unit without
using external equalization, although soffit mounting is recommended.
The upper curve group shows the horizontal directivity characteristics of 1035B in its vertical configuration measured at 2 m. The lower
curve shows the low frequency response measured at 0.5 m.
The reference axis lies on the
upper midrange driver axis.
Calibrated
crossover
control
switches.
MUTE
disconnects
the channel
for testing.
CROSSOVER FILTERS
The active crossover network
consists of three parallel band
pass filters, with crossover frequencies at 400 Hz and 3.5 kHz,
and a common balanced input
stage. All the filters are aligned
for equal phase and group delay
characteristics and are acoustically complementary. The filter
slopes are 24 dB/octave.
To adjust the balance of the drivers to suit a particular acoustic
environment, bass midrange and
treble controls are included,
which adjust the output in 1 dB
steps. In addition, a 15 kHz 'rolloff' control and low frequency
roll-off and 'tilt' controls are
present, to allow further refinement of the system response.
DCW TECHNOLOGY
The revolutionary Directivity Control Waveguide Technology is a
means of greatly improving the
performance of a direct radiating
multiway loudspeaker under
normal listening conditions. One of
the basic ideas is to match the
performance of the drivers in terms
of both frequency response and
directivity. This results in smoother
frequency response both on and
off axis. Also, due to improved
directivity control, especially in the
midrange frequencies, more direct
sound and less reflected sound is
received at the listening position.
The curves above show the effect of the bass, mid and treble level
controls, 15 kHz roll-off control and the bass tilt and roll-off controls
on the free field response, measured at 2 m.
This gives improved stereo
imaging and ensures the system
is less sensitive to differing control
room acoustics than any conventional direct radiator design. The
DCW Technology improves the
drive unit sensitivity by +2 to +6 dB
thus increasing the system
maximum sound pressure level.
The high and mid frequency
drivers are mounted in a DCW
to match their dispersion
characteristics. The DCW may
be rotated for horizontal or
vertical mounting.
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1035B
SYSTEM
SPECIFICATIONS
Lower cut-off frequency, -3 dB:
Upper cut-off frequency, -3 dB: > 22 kHz
Free field frequency response
of system: 31 Hz - 20 kHz (± 2.5 dB)
Maximum short term sine wave acoustic output
on axis in half space, averaged from 100 Hz to
3 kHz: @ 1m
Maximum long term RMS acoustic output in same
conditions with IEC-weighted noise (limited by
driver unit protection circuit):
@ 1m
Maximum peak acoustic output per pair @ 2 m
from the engineer with music material:
Self generated noise level in free field
@ 2m on axis:
Harmonic distortion at 100 dB SPL@ 1m on axis:
Freq: 50...200 Hz <1%
200...4k Hz <0.5%
> 4 kHz <3%
Drivers: Bass 2 x 385 mm (15") cone
Mid 2 x120 mm (5") cone
Treble 1 x 25 mm (1")
compression driver
Weight: Speaker 142 kg (313 lb)
Amplifier 71 kg (156 lb)
Speaker dimensions (Horizontal mounting):
Height 820 mm (32
Width 1105 mm (43
Depth 775 mm (30
< 29 Hz
> 131 dB SPL
> 126 dB SPL
> 136 dB
< 20 dBA
5
/16")
1
/2")
1
/2")
AMPLIFIER
SECTION
Bass amplifier output power with an 8 Ohm load:
Mid amplifier output power with a 4 Ohm load:
Treble amplifier output power with an 8 Ohm load:
Long term output power is limited by driver unit
protection circuitry.
Slew rate: 100 V/µs
Amplifier system distortion at nominal output:
Signal to Noise ratio, referred to full output:
Mains voltage: 100/110/115/220/230/240V
Voltage operating range at
Power consumption:
Short term 2 x 1100 W
Short term 600 W
Short term 300 W
THD
SMPTE-IM
CCIF-IM
DIM 100
Bass
Mid
Treble
230V setting: 219 - 241 V (±5%)
115V setting: 109 - 121 V (±5%)
Idle 150 W
Full output 3500 W
<0.05%
<0.05%
<0.05%
<0.05%
>101 dB
>105 dB
>106 dB
CROSSOVER
SECTION
Input connector: XLR female
pin 1 gnd
pin 2 +
pin 3 -
Input impedance: 10 kOhm balanced
Input level for 110 dB SPL output @ 1m:
variable from +15 to -5 dBu
Input level for maximum short term output of 131
dB SPL @ 1m:
variable from +36 to +16 dBu
Subsonic filter below 27 Hz :
18 dB/octave
Ultrasonic filter above 22 kHz:
12 dB/octave
Crossover frequencies:
Bass/Mid 400 Hz
Mid/Treble 3.5 kHz
Crossover acoustical slopes: >24 dB/octave
Level control operating range in 1 dB steps:
Bass: from 0 to -6 dB & MUTE
Mid: from 0 to -6 dB & MUTE
Treble: from 0 to -6 dB & MUTE
Bass roll-off control in 2 dB steps:
from 0 to -8 dB @ 30 Hz
Bass tilt control operating range in 2 dB steps:
from 0 to -8 dB @ 50 Hz
Treble roll-off control operating range in 1 dB
steps: from +1 to -3 dB @15 kHz
Amplifier dimensions:
Height 755 mm (29
Width 483 mm (19")
Depth 370 mm (14 9/16")
All data subject to change without prior notice.
Genelec Oy, Olvitie 5
FIN - 74100 IISALMI, FINLAND
Phone: +358 - 17 - 83 881
Fax: +358 - 17 - 812 267
E-mail: genelec@genelec.com
Web: http://www.genelec.com
3
/4")
Genelec Document BBA35001a COPYRIGHT GENELEC OY 11.2000
The 'CAL' position is with all tone controls set to
'off' and input sensitivity control to maximum and
corresponds to a maximally flat free field response.
Genelec Inc, 7 Tech Circle
Natick, MA 01760, USA
Phone: +1 - 508 - 652 - 0900
Fax: +1 - 508 - 652 - 0909
E-mail: genelec.usa@genelec.com
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