User manual LP dynamic processor
3
INTRODUCTION
The LP processors provide all the necessary filtering, equalization, signal distribution and
dynamic protection for the operation of APG loudspeakers and systems. They are designed
to operate in conjunction with the Micro Axial Series, DISPERSION Series, BEAM Series &
SECTOR Series and APG subwoofers.
CONNECTING A PROCESSOR IN THE ELECTRO ACOUSTIC CHAIN
Dynamic processors must be connected as the last element before the power amplifiers.
In order to easily easy interface with other equipment, APG processors offer balanced inputs
and outputs on XLR connectors, in conjunction with a built-in hum loop eliminator.
Since the APG dynamic processors do not need a “Sense” or Return connection, it is
possible to connect several amplifiers and loudspeakers of the same type on a single unit, as
long as the audio signal is the same.
FREQUENCY RESPONSE PROCESSING
The LP processor includes a number of equalization stages in order to optimize the
frequency response of the loudspeakers included in a sound system.
Two different equalizations are available according to the intended application:
1
Position MON: near-field use (stage monitoring, distributed systems).
2
Position FOH: distant-field (Front-Of-House, long-throw).
For each position there is a set of LF shelving, HF shelving and 3 band parametric EQ.
The processor includes, on each output, a subsonic protection and a dynamic protection
including the 3 limiting parameters of operating loudspeakers: Displacement of the
diaphragm, Temperature of the moving coil, Power limit of amplifier (CLIP)
Amplifier gain must be set to 26dB gain to respect proper functioning of the actives
protections of the processors. Most of amplifiers allow this setting.
