Typical listening room has high-Q acoustic resonances (room modes) in low frequencies. The room modes cause that even the best subwoofer does not sound as good as expected. The problem is worse when subwoofer is placed close to the walls or to the corner of the listening room.
ANTI-MODE 8033 technology (TM) eliminates the acoustic resonances of the room by correcting both the amplitude and the phase of the disturbing frequencies with very accurate filters. The device is very simple to use and is calibrated with a push of two buttons. It measures the combined subwoofer (or multiple subwoofers) and room response at the listening position or area, then designs the correction. Because the room modes are removed, you have the unique freedom to place the subwoofer(s) anywhere in the room (even corners)!
ANTI-MODE 8033 is connected to the line input of the active subwoofer by using standard RCA cables for input and output. Optionally a RCA to XLR converter provides balanced output connection. A calibration microphone is included in the package.
Features

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Blue LEDs as default
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Measures room response with the included microphone
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Easy to use, fully automatic calibration (no computer required)
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Works with any active subwoofer and multiple subwoofers that use mono signal
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Minimum-phase, no additional algorithm delay (total latency 2.7ms)
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Frequency range 5-250Hz (-3 dB)
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Frequency range of correction 16-250 Hz
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Improved Anti-Mode calibration with more filters (36) and larger correction range
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Single point / wider area optimization
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Three user selectable low frequency EQs with subsonic filter
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Subsonic filter can also be activated without lifts
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Additional selectable filters (5 low-pass and 2 dipole correction modes)
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Stereo inputs with active summing (mono output)
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Simultaneous connection of stereo system and home theater possible
(with stereo to mono or speaker level adapter)
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Smooth power on and off with fade-in
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>92dB dynamic range
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Possibility to power from 12 VDC supply
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Gold-plated RCA connectors
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Scratch-resistant and finger-print-resistant structure paint finish
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Dimensions 126 mm x 80 mm x 28 mm
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Weight 230 g
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Europlug (type C) 230V 50Hz
Read Anti-Mode 8033 Cinema / S-II User's Manual: English