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Genelec Övervaka 1238AC

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Genelec 1238AC
Smart Active Monitor
Operating Manual
1238AC
Genelec 1238AC Operating Manual
Introduction
Congratulations and thank you for
choosing Genelec!
Since 1978, Genelec has been guided
by a single idea – to make perfect
active monitors that deliver neutral and
accurate sound in every kind of acoustical
environment. In Genelec’s quest for this
ultimate goal, our unrivalled commitment
to research and development has led us
to continuously develop innovative driver
technology, electronic circuitry, enclosure
designs and more.
Our design philosophy is based on
sustainability and environmental values,
where industrial design serves our
products' acoustical performance. Your
Genelec product has been designed and
manufactured with care in our factory, in
Finland, using environmentally efficient
solutions to give you reliable operation
over many years.
Please take the time to read this manual.
Happy monitoring!
General Description
The Genelec 1238AC is a three-way
monitoring system for medium sized control
rooms. It performs well as free-standing
monitor as well as ush-mounted in control
room walls. It is suited for recording, lm
and video post-production, broadcast
monitoring as well as for mastering.
T h e u n i q u e Di r e c t i v i t y C o n t ro l
Waveguide™ (DCW™) technology by
Genelec provides excellent stereo imaging
and neutral frequency response even in
dicult acoustics.
With program material at a 2 meter
listening distance, the fast low distortion
ampliers drive a stereo system to peak
sound levels in excess of 124 dB SPL.
The 1238AC is fully compatible with
Genelec Loudspeaker Manager GLM™ and
the proprietary Genelec control network.
It can be used with 8200-series SAM
monitors and 7200-series SAM subwoofers
in the same network.
Drivers and Cabinet
Construction
The 1238AC reproduces low frequencies
with dual 250 mm (10 in) woofers in a 110
litre bass reex enclosure. The proprietary
130 mm (5 in) direct radiating midrange
driver, and a 25 mm (1 in) metal dome
tweeter are acoustically loaded by the
proprietary Directivity Control Waveguide.
All drivers are magnetically shielded.
Amplifiers and Signal
Processing
The 1238AC uses the RAM-L amplier unit.
The RAM-L is designed to be mounted in
a 19 inch rack. Digital signal processing
in the RAM-L amplier unit is done with
high precision algorithms, and includes
driver and amplier overload protection.
The room response compensations
include highly exible parametric lters,
level alignment, and acoustic delay
compensation. These allow accurate
matching to all console output sections
and room acoustics.
Cables
Each 1238A is delivered with the following
cable kit:
• One mains cable
• Two 10 m (32 ft 9 in) 4-pole Speakon
cables
• One 10 m (32 ft 9 in) RJ45 cable
• One 5 m (16 ft 4 in) RJ 45 cable
The 10 m cables are designed to go
between the amplifier and the monitor
enclosure. If you need to make custom
length cables for this, please connect the
Speakon cables pin to pin and see Table 1
for recommended wire gauges.
Operating Environment
These monitors and their RAM-L
amplifiers are designed for indoor
use only. The permissible ambient
temperature is 15-35 degrees Celsius (50-
95°F) and permissible relative humidity
between 20% and 80%. Humidity
condensation on the product is not
allowed during use. For instance, if the
product has been stored or transported
in a cool environment and then taken into
a warm room, it must be allowed to warm
up to the ambient temperature before
connecting to mains power.
Mounting Considerations
Place the monitor so that its acoustic axes
are aimed towards the listening position
(see Figures 1 and 2). Place monitors
with left-right symmetry and at an equal
distance from the listening position.
Acoustic reections from objects close
to monitors and the listening position
can cause colouration and blurring of the
sound image. Symmetrical positioning of
reective objects maintains good stereo
imaging. When sot (ush) mounting, the
wall surface should extend to the monitor,
forming a continuous surface.
Figure 3. GLM network cabling
Figure 1. The location of the acoustic axis.
L
R
C
30
0
RS
LS
100 120
0 - 0
Figure 2. Recommended placement
and alignment of monitors in a 5-chan-
nel system (ITU-R BS.775-1)
LISTENING
POSITION
MICROPHONE
GLM
NETWORK
GLM
NETWORK
GLM
NETWORK
USB
RAM-L
Figure 4. Connector panel of the RAM-L amplier.
LED CONNECTOR
CONNE CT ONLY TOGEN ELEC N ETWORK.
ANALOG
IN
DIGITAL IN
AES/EBU
DIGI L THRUTA
AES/EBU MAINS INPUT
50 / 6 0 Hz 750 W
100 - 230 V~
SERIALNUMBER
MIDRANGE /
TWEETER
WOOFER
LOUDSPEAKER CONNECTORS
RAM-L AMPLIFIER
MODULE
www.genelec.com
MADE IN FINLAND
CONTROL NETWORK
21 3 THRU
IN
1
1
2 3
3
2-
GND
+
DIRECT
LOUDSPEAKER
CONNECTOR
CONSULT OPERATING
MANUAL BEFORE
OPENING !
ANALOG
AUDIO
INPUT
DIGITAL
AUDIO
INPUT
DIGITAL
THRU
CONNECTOR
CONTROL
NETWORK
CONNECTORS
LOUDSPEAKER CONNECTOR GROUP
MAINS
CONNECTOR
Cable gauge Max. length
2.0 mm2 (14 AWG) 30 m (100 ft)
3.3 mm2 (12 AWG) 40 m (130 ft)
5.3 mm2 (10 AWG) 60 m (200 ft)
Table 1. Recommended cable thicknesses
for dierent lengths of signal cable

Produktspecifikationer

Varumärke: Genelec
Kategori: Övervaka
Modell: 1238AC

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