A series of lab test measurements comparing the BDP-83SE to the BDP-83 including Frequency Response, Tabulated Bass Management Comparison, THD + N vs Frequency, Crosstalk.
"We were a bit concerned with Oppo’s choice to use an ESS Technology DAC solution since it was relatively new and hasn’t been proven in the home theater market yet. We were curious to see how it would handle full scale digital audio reference levels (0dBFS) and how it would stack up against their stock BDP-83 player and thus tested accordingly.
We utilized the industries most advanced HDMI Audio Analyzer – the Audio Precision APx585 along with their Blu-ray test disc which has Dolby TrueHD and DTS HD test signals varying from 48kHz / 8 channel to 192kHz / 6 channel. Channels #1 – 5 represent the 5 main speaker channels while channel 6 represents the subwoofer channel for all tests unless otherwise noted.
With all speakers set to “large” and subwoofer turned to “on”, we measured the frequency response of both players using a Dolby TrueHD 192kHz / 6CH test signal. Interesting both players sent a fullrange signal via the subwoofer output. We didn’t understand why this was the case until we pinged Oppo. They explained to us this was purposely done to accommodate users playing Chesky 6.0 DVD-Audio discs that require a full range subwoofer channel because those discs use the center and subwoofer channels to carry the surround channel information. If you do run fullrange on either player for all other source material, we recommend engaging your subwoofers internal crossover else you will be sending a fullrange signal to that channel which could result in boomy, highly localizable bass."