User manual

ManualsBrandsd&b audiotechnik ManualsComputer equipmentA1 Mainframe F-Series

(4.0E) 4-1

IMPORTANT!

4. Loudspeakers

d&b active systems consist of full range speaker cabinets fitted with

separate high and low frequency drivers and actively driven by an

A1 mainframe. A full range active system may be supplemented

with additional active subwoofer systems.

All of the full range cabinets feature CD dispersion. CD stands for

Constant Directivity and indicates that the coverage angle of the

loudspeaker is largely unaffected by frequency. A CD characteri-

stic is essential for loudspeakers intended for use in multi-cabinet

arrays.

A complete range of mounting brackets, flying frames, rigging ac-

cessories and a state-of-the-art flying system are available to al-

low d&b loudspeakers to be arrayed as quickly, safely and effecti-

vely as possible. Some of the rigging systems and fittings are loud-

speaker-specific so for further details please refer to the brochures

for each system and the d&b Rigging Accessories manual.

Constructed from marine plywood the loudspeaker cabinets have

an impact-resistant paint finish and the drivers are physically pro-

tected by a rigid steel front grill covered by acoustically transpa-

rent foam.

d&b active system loudspeakers may only be driven by the appro-

priate controller modules and A1 mainframes. Only by using the

controller can maximum loudspeaker performance be achieved.

Ignoring these basic requirements can adversely influence sound

quality and risk damage to the loudspeakers. Without the correct

thermal and LF displacement limiters in operation LF drivers are

particularly susceptible to damage.

Please note that driving an active series loudspeaker cabinet with-

out a suitable controller will void any warranty claim relating to

loudspeaker failure.

d&b loudspeaker cabinets are equipped with threaded inserts,

loudspeaker stand mounts, flying fittings, etc. The cabinets must on-

ly be used with original d&b accessories in strict accordance with

the assembly instructions. Especially when flying loudspeakers,

users must strictly observe the Safe Working Load (SWL) specified

for each rigging component or rigging assembly used.

The d&b Rigging Accessories manual describes the correct assem-

bly and use of the rigging components for d&b loudspeakers.

4.1. Connections

All active system loudspeakers are fitted with an 8-pin CA-COM

connector mounted on a metal panel, recessed to protect it from

accidental damage - the panel also bears the cabinet serial num-

ber details.

The different active speaker systems use different connector pin as-

signments which are printed next to the speaker output connector

on the controller module rear panel.

The d&b SpeakerID circuit used for the active systems prevents damage

if the wrong speaker is inadvertedly connected to an A1 mainframe.