Originally Posted by AudioQuestions
An old velodyne Optimun 10 BG from 2009
Do you still have the remote for the device?
Do you still have the supplied microphone for the device?
Do you still have the user manual for the device?
If have it, use the remote to reset the device to the factory defaults. The reset button sequence is in the manual. Once reset the device should show the 'P3' setting on the display. This is the flattest internal EQ setting and it engages the 15 Hz subsonic filter to protect the sub. The volume should be reset to '30'. Use the remote to set the 'Phase' to '0' (zero).
Then, rotate the 'Low Pass Crossover' knob on the device fully counter-clockwise to the 'Direct' position. This will bypass the internal XO on the device. This will prevent the SW internal XO from affecting the signal sent to it by the AVR.
Next, in the AVR settings for the speakers, set the mains to 'Small' and the subwoofer to 'LFE + Main'. Set the XO frequency to 80 Hz for the testing. Now rerun the Audyssey setup on the AVR. Once it completes, make note of the setting for the subwoofer level.
If the AVR is setting the SW level lower, -XXdb or so, decrease the volume level on the SW a few clicks and rerun Audyssey. If the AVR is setting the SW level higher, +XXdB or so, increase the volume level on the SW a few clicks and rerun Audyssey. Repeat until you get the level in the AVR close to '0' (zero) for a level adjust. One or two points either way won't really matter and you don't have to try to get it exact—just close enough for government work.
Once this setup is completed the AVR will control the settings for the XO for bass management and the LFE channel. Again, for music listening, you may want to experiment with the XO frequency in the AVR or just use the presets in the SW to adjust the EQ of the SW.
Keep reading the REW thread and the setup guide until the UMIK arrives.