Hello All,
The LFE channel should not be confused with the subwoofer output. The LFE channel is bandwidth limited by the source material itself (120 Hz for DD and 80 Hz for DTS). Keep in mind, those frequencies are well below the fourth order 200Hz HPF/LPF setting for the subwoofer channel in the Model 990's bass management software. Applying a 120Hz limit on the subwoofer output in order to coincide with the DD LFE specification would create a gap in frequency response when the higher crossover options in the Model 990 are used.
In addition, please note that both DVD-Audio and SACD had provisions for full bandwidth "LFE" tracks which were used to create a "height" channel.
The above not withstanding, if you wish to roll back to an earlier version of the software, please email
customerservice@outlawaudio.com Best,
Scott