d & b audiotechnik Ci80 User manual

Ci80
Manual (4.1 EN)

Symbols on the equipment
Please refer to the information in the operating manual.
WARNING!
Dangerous voltage!
Contents
Safety precautions...............................................................3
Information regarding use of loudspeakers...............................................3
Ci80 ......................................................................................4
Connections.........................................................................................................5
Operation with D6 or D12.............................................................................5
Operation with E-PAC (version 3 with display only)...............................6
Dispersion characteristics.................................................................................6
Technical specifications.....................................................................................7
Manufacturer's declarations................................................8
EU conformity of loudspeakers (CE symbol)..............................................8
WEEE Declaration (Disposal)..........................................................................8
General Information
Ci80 Manual
Version 4.1 EN, 02/2008, D2069.E.04
Copyright © 2008 by d&b audiotechnik GmbH; all rights reserved.
Keep this manual with the product or in a safe place so that it is
available for future reference.
In the case of reselling this product handout this manual to the new
customer.
If you supply d&b products, please draw the attention of your customers
to this manual. Enclose the relevant manuals with the systems. If you
require additional manuals for this purpose, you can order them from
d&b.
d&b audiotechnik GmbH
Eugen-Adolff-Strasse 134, D-71522 Backnang, Germany
Telephone [phone], Fax [phone]
E-mail: [email protected], Internet: www.dbaudio.com

Safety precautions
Information regarding use of loudspeakers
WARNING! Never stand in the immediate vicinity of loudspeakers driven at a high
level. Professional loudspeaker systems are capable of causing a sound
pressure level detrimental to human health. Seemingly non-critical
sound levels (from approx. 95 dB SPL) can cause hearing damage if
people are exposed to it over a long period.
In order to prevent accidents when deploying loudspeakers on the
ground or when flown, please take note of the following:
When setting up the loudspeakers or loudspeaker stands, make sure
they are standing on a firm surface. If you place several systems on top
of one another, use straps to secure them against movement.
Only use accessories which have been tested and approved by d&b for
assembly and mobile deployment. Pay attention to the correct
application and maximum load capacity of the accessories as detailed in
our specific "Mounting instructions" or in our "Flying system and rigging
manuals".
Ensure that all additional hardware, fixings and fasteners used for
installation or mobile deployment are of an appropriate size and load
safety factor. Pay attention to the manufacturers' instructions and to the
relevant safety guidelines.
Regularly check the loudspeaker housings and accessories for visible
signs of wear and tear and replace them when necessary.
Regularly check all load bearing bolts in the mounting devices.
CAUTION! Loudspeakers produce a static magnetic field even if they are not
connected or are not in use. Therefore make sure when erecting and
transporting loudspeakers that they are nowhere near equipment and
objects which may be impaired or damaged by an external magnetic
field. Generally speaking, a distance of 0.5 m (1.5 ft) from magnetic
data carriers (floppy disks, audio and video tapes, bank cards, etc.) is
sufficient; a distance of more than 1 m (3 ft) may be necessary with
computer and video monitors.
Ci80 Manual (4.1 EN) Safety precautions - 1

Ci80
Fig. 1: Ci80 loudspeaker
The Ci80 loudspeaker is a full range, two-way bass-reflex enclosure,
utilizing an 8"/1" coaxial driver combination with a passive crossover.
Coaxially mounting the 1" HF compression driver and 8" LF driver
creates a very compact single driver whilst retaining the benefits of
separate magnetic assemblies. The drivers are positioned together to
utilize the combined shape and geometry of the LF cone and HF horn to
create a single waveguide with a controlled, symmetrical, 85° conical
dispersion.
The Ci80 cabinet is constructed from marine plywood and has an
impact resistant paint finish. The front of the cabinet is protected by a
rigid metal grill fitted with an acoustically transparent foam. The 30°
angled rear side panels of the cabinet allow Ci80s to be positioned side
by side forming miniature arrays. Four M8 threaded inserts are
provided for attaching installation hardware.
NOTICE: Only operate Ci80 loudspeakers with a correctly configured d&b
amplifier, otherwise there is a risk of damaging the loudspeaker
components.
Weather resistant (WR) option
NOTICE: The WR option enables operation of loudspeakers in changing ambient
conditions, however it is not intended to enable permanent, unprotected
operation of loudspeakers outdoors.
- Provide an additional cover over the loudspeakers.
- Aim the cabinets either horizontally or with a downward tilt.
Cabinet design
Component Description
Cabinet Plywood to DIN 68705 Part III.
Equivalent to flame spread class 3.
Temperature range from –200° C to +100° C.
Wood joints Bonded waterproof to stress class D4.
Cabinet paint Two component PU paint
(seaworthy, chemical resistant and temperature
resistant to 110° C).
Screws Stainless steel (VA).
Driver cones Impregnated with silicone spray or coated.
Driver components/
Crossover network
The coil and pole plate are also treated with
silicone. The crossovers are sprayed with
silicone on both the solder and component
sides.
Ci80 Manual (4.1 EN) Page 4 of 8

Connections
1+
1-
2+
2-
1+
1-
2+
2- passive
crossover
Fig. 2: Connector wiring
The Ci80 cabinet is fitted with two NL4 connectors. All four pins of both
connectors are wired in parallel. The Ci80 uses the pin assignments
1+/1–. Pins 2+/2– are designated to the d&b active subwoofers.
Using one connector as the input, the second connector allows for direct
connection to additional loudspeakers.
Installation loudspeakers with the weather resistant option are supplied
with a fixed cable (PG).
Cable type: H-07-RN-F 2 x 2.5 mm2/AWG 13
Standard length: 5.5 m (18 ft)
Pin equivalents of NL4 connectors and fixed cable option (PG) are listed
in the table below.
NL4 1+ 1– 2+ 2–
PG Brown (+) Blue (–) n.a. n.a.
Operation with D6 or D12
Select the controller setup Ci80.
Within the D12 amplifier this is available in "Dual Channel" and "Mix
TOP/SUB" mode.
Up to a total of four Ci80 loudspeakers can be driven by each D6 or
D12 amplifier channel.
Controller settings
For acoustic adjustment the functions CUT, HFA and CPL can be
selected.
CUT
Set to CUT, a high pass filter with a 130 Hz cut off frequency is inserted
in the controller signal path. The Ci80 is now configured for use with the
d&b active subwoofers.
-5
0
5
10
-10
-15
-20
-25
-30
20 100 1k 10k 20k
Fig. 3: Frequency response correction of
HFA circuit
HFA circuit
In HFA mode (High Frequency Attenuation), the HF response of the
system is rolled off. The HFA circuit provides a natural, balanced
frequency response when a unit is placed close to listeners in near field
or delay use.
High frequency attenuation begins gradually at 1 kHz, dropping by
approximately 3 dB at 10 kHz. This roll-off mimics the decline in
frequency response experienced when listening to a system from a
distance in a typically reverberant room or auditorium.
Fig. 4: Frequency response correction of
CPL circuit
CPL circuit
The CPL (Coupling) circuit compensates for coupling effects between the
cabinets when building closely coupled arrays. CPL begins gradually at
1 kHz, with maximum attenuation below 400 Hz, providing a balanced
frequency response when cabinets are used in arrays of two or more.
The function of the CPL circuit is shown in the diagram opposite and can
be set in dB attenuation values between –9 and 0, or a positive CPL
value which creates an adjustable low frequency boost around 65 Hz (0
to +5 dB).
Ci80 Manual (4.1 EN) Page 5 of 8

Operation with E-PAC (version 3 with display only)
Selecting Ci80 (CI8) mode enables the E-PAC to drive up to two Ci80
loudspeakers. LO IMP mode configures the E-PAC to drive a maximum
of four Ci80 cabinets with a 6 dB reduction of input level to the
speakers.
The CUT and HFA settings are available. The characteristics of the CUT
and HFA settings are explained in the previous section "Operation with
D6 or D12 - Controller settings".
Dispersion characteristics
The diagram below shows the dispersion angle v frequency plotted
using lines of equal sound pressure (isobars) at –6 dB and –12 dB.
Fig. 5: Ci80 isobar diagram
Ci80 Manual (4.1 EN) Page 6 of 8

Technical specifications
-5
0
5
10
-10
-15
-20
-25
-30
20 100 1k 10k 20k
Fig. 6: Frequency response Ci80 standard and
CUT settings
Ci80 system data
Frequency response (–5 dB)...................................................................70 Hz – 20 kHz
Max. sound pressure (1 m, free field) with D12................................................129 dB
Max. sound pressure (1 m, free field) with D6...................................................126 dB
(SPLmax peak, pink noise test signal with crest factor of 4)
Input level (100 dB SPL / 1 m).............................................................................–10 dBu
Ci80 loudspeaker
Nominal impedance...............................................................................................16 ohms
Power handling capacity (RMS / peak 10 ms).......................................120 / 480 W
Nominal dispersion angle (hor. x vert.).........................................................85° conical
Components.............................................................................................................8” driver
............................................................................................................1” compression driver
....................................................................................................passive crossover network
Connections...............................................................................................................2 x NL4
...........................................optional fixed cable (H-07-RN-F 2 x 2.5 qmm/AWG 13)
Pin assignments.................................................................................................NL4: 1+/1–
.............................................................................................Fixed cable: Brown + / Blue –
Weight..........................................................................................................7.8 kg (17.2 lb)
87
[3.40"]
135
[5.30"]
205
[8.07"]
30
°
352
[13.86"]
240
[9.45"]
112
[4.39"]
176
[6.93"]
Fig. 7: Ci80 cabinet dimensions in mm [inch]
Ci80 Manual (4.1 EN) Page 7 of 8

Manufacturer's declarations
EU conformity of loudspeakers (CE symbol)
This declaration applies to
- Ci80 Z1402
manufactured by d&b audiotechnik GmbH.
All production versions of this type are included, provided they
correspond to the original technical version and have not been subject
to any later design or electromechanical modifications.
We herewith declare that said products are in conformity with the
provisions of the respective EC directives including all applicable
amendments.
A detailed declaration is available on request and can be ordered from
d&b or downloaded from the d&b website at www.dbaudio.com.
WEEE Declaration (Disposal)
Electrical and electronic equipment must be disposed of separately from
normal waste at the end of its operational lifetime.
Please dispose of this product according to the respective national
regulations or contractual agreements. If there are any further questions
concerning the disposal of this product please contact d&b audiotechnik.
D2069.E.04, 02/2008 © d&b audiotechnik GmbH
d&b audiotechnik GmbH, Eugen-Adolff-Str. 134, D-71522 Backnang, Germany, Phone [phone], Fax [phone]_______