Genelec DI-8 Owners manual

DI8A

Operating Manual
Genelec DI8A

Active Balancer

Description

The Genelec DI8A Active Balancer is
designed to convert an unbalanced line
signal to a balanced line signal, thereby
reducing its susceptibility to electronic inter­ference. The DI8A has eight independent
signal channels. One of the channels has
duplicated outputs, providing easy connec­tion for twin subwoofers in large systems.
The DI8A is equipped with a muting circuit to
reduce noise caused by switching the unit on
or off. A remote control connector for remote
ON / STANDBY switching is also provided.

Installation

We recommend that you install the DI8A
close to the signal source, so that you can
keep the unbalanced input lines as short as
possible. The DI8A can be attached into a
19” rack using the rack ears included in the
kit or placed on a shelf. Before connecting
any cables, ensure that all equipment is
powered down and the mains voltage selec­tor on the left side of the DI8A has been set
to your local mains voltage.

Connect the unbalanced signal cables from
the program source to the RCA input con­nectors on the back panel of the DI8A and
the balanced output cables from the corre­spondingly numbered XLR connectors on
the DI8A to the active speakers or power
amplifiers. Note that channel 8 has dupli­cated outputs 8a and 8b. This allows con­necting two subwoofers to the LFE channel
of a surround sound system.

The switches for remote power
ON / STANDBY and +6 dB gain adjustment
are covered with a plexiglass to ensure that
the settings are not altered accidentally.

Remote control

The DI8A has a provision for remote power
ON / STANDBY switching. Two pairs of con­nectors are provided, pins 1 and 2 for a 12
V DC trigger type remote control and pins
3 and 4 for an external switch or relay type
control. Do not connect two remote controls
to the DI8A at the same time. The remote
control function must be activated by turning
the “REMOTE CONTROL” dip switch on the
front panel to “ON”.

Gain adjustment

The +6 dB gain adjustment feature allows
the user to increase the output level from
the DI8. This may be needed if the output
from the main preamp/processor is found
insufficient to drive the system loudspeakers
to their full output capability. This situation
should occur rarely though, and the feature
should not be used unless sure that maxi­mum gain has been reached on the main
preamp/processor.

The +6 dB gain setting can be selected sep­arately for each of the eight channels using
the “GAIN” switches located on the front
panel. Usually it is best to activate every
+6 dB switch at the same time so that the
balance of multi-channel recordings is pre­served and further system calibration is kept
to a minimum.

Reduce the preamp/processor volume
to minimum before activating the +6 dB
switches. After you have activated all
switches, increase the volume and check the
resulting level.

Safety

The DI8A has been designed in accordance
with international safety standards. How­ever, to ensure safe operation and maintain
the instrument in safe operating condition
the following warnings and cautions must be
observed.

• Do not expose the DI8A to dripping
or splashing. Do not place any objects
filled with liquid, such as vases on the
DI8A or near it.

• No naked flame sources, such as
candles, should be placed on
the DI8A.

• Servicing and adjustment must only
be performed by qualified service
personnel.

• Opening the DI8A is strictly prohibited
except by qualified service personnel.

• Always use a mains power
connection with protective earth.
Failing to do this may lead to
personal injury.

Guarantee

This product is supplied with one year guar­antee against manufacturing faults or defects
that might alter the performance of the unit.
Refer to supplier for full sales and guarantee
terms.

SYSTEM SPECIFICATIONS

SYSTEM CONTROLLER

SOURCE

PROCESSOR

GENELEC DI8A

LCRSLSR RL

RR

LFE

REMOTE
CONTROL
CONNECTION

UNBALANCED LINE
CONNECTION

BALANCED LINE
CONNECTION

Frequency response: +/- 0.5 dB 20 Hz-60 kHz
+/- 1.5 dB 18 Hz-120 kHz

Dynamic Range: 128 dB
Maximum input signal: 8V rms

Noise: < -110 dBu
THD+N: < 0.002% (@ 20 Hz-20 kHz, 0 dBu)
Crosstalk: < -95 dB
Gain: 0 dB/+6 dB (user selectable)

Input connectors: RCA unbalanced
Input impedance: 10k ohm (minimum)

Output connectors: XLR balanced (pin 1 gnd, pin 2 +, pin 3 -)
Minimum load impedance: 10k ohm
Maximum load capacitance: 30 nF

Mains voltage: 230/115 V
Max power consumption: 10 W

Maximum ambient temperature 35°C (95°F)

Weight: 4 kg (8,8 lbs)
Dimensions Height: 43 mm (13/4”)
Width (rack ears not included): 423 mm (1610/16”)
Depth: 204 mm (8”)

DI8A in a 7.1-channel
digital Surround Sound system

Genelec Documen t D0031R001a. Copyright Ge nelec Oy 9.2006. All data subject to change without prior no tice

Inter national e nquiries:

Genele c, Olvitie 5

FIN-74 100, Iisal mi, Finlan d

Phone [phone]

Fax [phone]

Email genelec@g enelec.com

In the U.S. please c ontact:

Genele c, Inc., 7 Tech Cir cle

Natick, MA 01760 , U.S.A.

Phone [phone]

Fax [phone]

Email genelec.u [e-mail]

In China please contact:

Beijing Genelec Audio Co. Ltd.

Jianwai SOHO, Tower 12, Room 2306

39 East 3rd Rin g Road

Chaoyang District, Beijing 100022, China

Phone [phone]

Fax [phone]

www.genelec.com

In Sweden please contact:

Genelec Sverige

Box 5521, S-141 05 Huddinge

Phone [phone]

Fax [phone]

Email info@genelec .com