a-them AVM 90, Operating Manual

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5.2 BASS MANAGEMENT
Anthem Room Correction automatically sets these items during measurement, and you may skip this menu.
Subwoofers play two things, LFE (Low-Frequency E ff ects) channel sound in multichannel soundtracks and bass
redirected from speakers that are con fi gured to use a crossover (i.e., there’s a Hz value set in the bass management
menu instead of being set to “O ff ”). Some people prefer to play 2-channel music without the use of a subwoofer. The
reason often cited for this is that subwoofers do not blend well with the main speakers. Do not fear! Anthem Room
Correction excels in integrating subwoofers with the main speakers. When using Anthem Room Correction, we strongly
recommend using at least one subwoofer to enhance all the speakers. A subwoofer, with a built-in ampli
fi er, plays
bass that is louder, deeper, and with less distortion than that of most full-range speakers. (there are some amazing
full range speakers and not that great subwoofers available so this is a general rule of thumb)
In this menu, enter information about your speakers so that bass does not become distorted. The bass manager is a
crossover that divides the audio into two frequency bands. The result is less bass going to speakers, and more bass
going to the subwoofer.
If your subwoofer has a built-in crossover, set it to “bypass” or set its frequency control to the highest frequency since
the MRX/AVM handles this.
Similarly, if your subwoofer has a phase option, set it to 0 since the MRX/AVM handles this as well. Highlighting Bass
Management, then pressing SELECT displays this menu:
Bass Management
Pro fi le 1 Selection
Pro fi le 2 Selection
Pro fi le 3 Selection
Pro fi le 4 Selection
Four con fi gurations may be set up. Each contains the following:
Pro fi le # Selection
LFE Low Pass Filter 120 Hz
Subwoofer 1 Phase Frequency 80 Hz
Subwoofer 1 Phase 0
Subwoofer 1 Polarity Normal
Subwoofer 2 Phase Frequency 80 Hz
Subwoofer 2 Phase 0
Subwoofer 2 Polarity Normal
Subwoofer 3 Phase Frequency 80 Hz
Subwoofer 3 Phase 0
Subwoofer 3 Polarity Normal
Subwoofer 4 Phase Frequency 80 Hz
Subwoofer 4 Phase 0
Subwoofer 4 Polarity Normal
Front Cross Over 80 Hz
Super Sub Fronts No
Front Wide Crossover 80 Hz
Center Crossover 80 Hz