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

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 +49-7191-9669-0, Fax +49-7191-95 00 00

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

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

-10

-15

-20

-25

-30

20 100 1k 10k 20k

Fig. 3: Frequency response correction of

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

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

-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)

[3.40"]

135

[5.30"]

205

[8.07"]

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 +49-7191-9669-0, Fax +49-7191-95 00 00_______

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