User manual

(4.0E) 1-1
1. Introduction
This user manual describes the facilities and functions of d&b
systems which are operated with the E-PAC power amplifier
controller. It covers the operation of the E-PAC and the
loudspeakers used in these systems.
d&b publishes additional application and technical information
notes (TI). Examples for different applications and combinations of
d&b C-Series and E-Series systems are given in TI 326.
A d&b publications list and order form is appended to this manual
and we will gladly send you any of the listed publications on
request. If you have any comments on the information presented,
or feel that something is inadequately explained or not covered,
then please tell us using the comments section of the publication
order form.
1.1. System concept
All d&b loudspeaker systems are designed to meet the following
criteria :
- Consistent neutral sound over the full working dynamic range
- Ease of operation
- Simple set up and wiring
- Safe and reliable operation
- Compact design
In order to satisfy these demands d&b developed a complete
system concept incorporating the loudspeaker, the loudspeaker
specific control electronics (the controller) and the power amplifier.
Fundamental to the performance of the loudspeaker is the care
taken in the development of individual components resulting in
well controlled dispersion, high efficiency and excellent dynamic
response.
The controller creates the optimum mix of output level capability,
operating reliability and longevity, and pure sound quality.
Protective circuits continuously model the loudspeaker load
through simulation of cone displacement and voice coil
temperature ensuring signal level is only reduced when necessary
to prevent driver damage. No signal compression takes place
within the systems normal operating range and there is no
dynamic manipulation of system frequency response enabling most
applications and acoustic environments to require no additional
signal processing.
The power amplifier and control for each loudspeaker are housed
within the A1 and P1200A mainframes or the E-PAC power
amplifier controller. All systems are compatible, easily combined
and complementary, and can be accessed using the d&b remote
control system to allow overview and control over the most
complex applications.