User manual LP dynamic processor
7
DESCRIPTION OF CONTROLS
FRONT PANEL
C)
SYSTEM OPERATION:
6)
HF EQ:
This pot controls the clarity of the system, adding or subtracting HF
energy via a "tilt" filter. The range is from -6 to +6 dB.
7)
MON/FOH:
This switch engages equalization, optimized for near-filed applications
(stage monitor, distributed sound). In the FOH position, the equalization is adapted
for far-field (Front-Of-House, long-throw, high power)
8)
With Sub/No Sub:
When engaged this switch inserts a High pass filter in the
main speakers providing the necessary cross-over function needed when
subwoofers are used.
9)
High ON/OFF:
When released, this switch cuts the signal going to the main
speakers.
D) PROTECTIONS DISPLAYS :
Active mode protection does not alter sound reproduction.
10)
PROTECTION:
Each output incorporates a protection circuitry which simulates the
limiting parameters of the loudspeakers:
Excursion of the cone driver,
Temperature of the moving coil,
Clip of the amplifier.
A set of 3 LED's is used to indicate each operational parameter.
The LED's are activated when the operational parameters of the speaker are
approaching dangerous levels.
Flashing of the LED's indicate normal activity of the system.
Continuous lighting of LED's indicate that one or several parameter limits are
constantly exceeded, and that level should be reduced
11)
CALIBRATION:
This potentiometer is used to calibrate the anti-clip protection of
the SUB amp. (see chapter E)
12)
CALIBRATION:
This potentiometer is used to calibrate the anti-clip protection of
the main amps. (see chapter E)
E) CALIBRATION OF ANTI-CLIP PROTECTION:
Practical Calibration method:
Position the “Power” potentiometers at their maximum.
Using a signal featuring strong dynamics, increase the signal level until reaching
amplifier saturation ("clip") (most amplifiers comprise front panel clip LED's).
Pull down “Power” potentiometers until the amplifier leds switch off. Amplifier's LED's
must go off while the processor's Amp LED must light up.
Theoretical Calibration method:
Set the “Power” potentiometers on the position corresponding to the theoretical power
of the amplifier under 4 Ohms.
