A
NTI
-M
ODE
8033
CINEMA
/ 8033S-II
4.2.4. Subsonic Filter Only
A fourth EQ setting activates the digital subsonic filter without any lift. The
Subsonic-
Filter-Only
mode is active when the LIFT25 and LIFT35 LEDs are dimly lit. The “flat”
setting is automatically changed to this setting after the first (main) calibration.
4.2.5. Lifting 20-30Hz (Anti-Mode 8033S-II)
The Anti-Mode 8033S-II has an additional EQ setting. Quickly press the LIFT button
until both LIFT25 and LIFT35 LEDs are fully lit. This mode gives about 8dB of lift at
25Hz. The digital infrasonic filter is also activated.
All lifting modes decrease the overall level of the signal by 3 dB to reduce the risk of
clipping / saturating the output signal. Listening tells you which one of the lifting settings
gives best results. The 'flat' and 'subsonic-filter-only' settings are probably the best options
for music, because they give the most accurate transient response.
Lift modes are not recommended when the dipole correction is active.
4.3. Input Level Warning
If the input signal level in the Anti-Mode 8033's Analog to Digital Converter (ADC) is near the
maximum input range, the user is warned in two phases. If the input signal level has only 3 dB of
headroom remaining, the BYPASS LED will start flickering. If the level increases from this, the
signal starts to saturate at the ADC input and harmonic distortion increases. If the input level
reaches maximum, the LIFT35 LED starts flashing. When the input level is reduced the LEDs
resume normal operation.
The input level warning is useful in optimizing the signal level that goes into the Anti-Mode. If the
volume of your subwoofer is too high, the AVR's calibration may set unnecessarily low levels for
the subwoofer output. This leaves much of the Anti-Mode's available input range unused and can
cause an audible low level hum or noise from the subwoofer. This may be the case if your AVR
indicates its subwoofer output level is below -3dB.
To take advantage of the full input range of the Anti-Mode, decrease the subwoofer volume and
increase the output level from the pre-amplifier or AVR until you see only occasional 3dB warnings,
then lower the volume a few dB.
Rev. 2.0
18.06.2012
Page 13 (20)
PWR
BYPASS
LIFT 25
LIFT 35
PWR
BYPASS
LIFT 25
LIFT 35
