Originally Posted by Bachelor
A question for the experienced users:
I have all speakers set to small with sub on. It seems that the LFE is not the same level as bass frequencies that are crossed at 80hz.
I know there are variables, but is there a known issue with setting the fronts to small? I know with the 83SE it was recommended to set fronts to large.
What firmware version do you have in the player and what sort of content are you playing when you find this problem? The latest official firmware is the 0917 firmware. Check Setup > Device Setup > Firmware Information. The correct version numbers are on Oppo's support page or in the firmware history section of the first post of the 93 sticky thread at the top of this Forum.
As far as I know, LFE is properly balanced with the steered bass output on the multi-channel Analog subwoofer output for all content types. (No bass steering happens on the HDMI output, so the HDMI LFE channel only carries LFE -- i.e., all speakers are "Large" on HDMI. HDMI bass steering happens in your HDMI AVR.)
The multi-channel Analog subwoofer output needs to be boosted +15dB to match the other Analog channels. This can be done at the volume knob of the sub, but +10dB of boost is usually applied automatically, by default in AVRs, so usually only +5dB more is still needed.
You can check levels (LFE compared to main channels) using an audio calibration disc such as with the LPCM tracks from the AIX Audio Calibration Blu-ray or tracks 43-48 from "Stay in Tune with PentaTone", SACD.
You can check that steered bass levels match the rest of the content level on the fronts for example by using the Crossover test from AIX, which sends a tone to the fronts that sweeps back and forth across the Crossover region. If the volume stays constant then steered bass is good, and if LFE also matches from the test above then everything is good.
NOTE: If the volume varies as the Crossover test tone swings back and forth this can be due to an incorrect choice of Crossover frequency, or to frequency variations in bass response in your listening room -- typically fixed by repositioning the sub or adding acoustic bass treatments to the room. AIX also includes a wider range bass sweep to help reveal room response problems.