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CONCEPTION & INNOVATIONS
• X-GUARD™ PROCESSING
X-GUARD™ excursion control ensures that bass driver excursions never exceed an absolute limit (too high
distortion and risk of breakage). This excursion control device constantly compares the input signal and its
parameters (notably frequencies/amplitude) to a specific “setpoint”. When the signal becomes too high, it
immediately intervenes to limit the amplitude of the signal without inducing audible artifacts.
Unlike a classic subsonic filter, X-GUARD™ preserves signal integrity as well as phase and does not induce
group delay while protecting the speakers much more effectively. Its presence is undetectable to any
extent when it does not intervene on the signal. This technology makes it possible to exploit all the
dynamics available from the woofers without putting them in danger.
• U-GUARD™ PROCESSING
The U-GUARD™ device aims to reduce square wave formation (clipping distortions) by
output of the device and to avoid saturation of the power stages at maximum power. When the signal
exceeds the set threshold, U-GUARD limits the formation of harmonics. This point is important for
subwoofer applications because the harmonics (odd ranks) created by clipping are located at higher
frequencies and make the subwoofer(s) perfectly localizable.
The process is timed so that the power stages are never in full saturation. Unlike certain circuits placed in
a feedback loop, U-GUARD intervenes from the first rising edge by maintaining a signal shape closer to
the original and more pleasant to listen to.
1- MAIN ON/OFF SWITCH
2- MAINS SOCKET (CABLE PROVIDED)
3- X-GUARD ADJUSTMENT SWITCH
4- EQ ADJUSTMENT SWITCH
5- FILTER SLOPE SWITCH: 24DB/OCT -12 DB/OCT - LFE
6- PHASE INVERTER 0-180°
7- POTENTIOMETER FOR ADJUSTING THE HIGH CUTOFF
FREQUENCY (40 TO 150 HZ)
8- LEVEL ADJUSTMENT POTENTIOMETER
INPUT (VOLUME)
9- POWER ON INDICATOR
10- LEFT AND RIGHT LOW LEVEL INPUTS
11- POWER OUTPUTS / SUB600S
12- XLR INPUT
13- NOT USED
