Originally Posted by ghost me
Hello, I have a question about what settings I should use.
I have the ProCinema 800 system 5.1 (1000 center, other 4.1 are 800) and the Onkyo Tx-nr616 receiver. I'm going to connect the ProSub 800 to the receiver with the high level outputs, then connect the front left and front right to the Prosub 800.
What should I set the speakers to (small/large, sub on/off) and what crossover should I set in the receiver settings and on the subwoofer itself?
Ghost me, with those connections, you should (1) set the front left and right to "large" and the other channels to "small." Set subwoofer to "yes."
Crossover setting on the AVR can vary because room acoustics and speaker placement can affect how well the sub blends with the speakers, but (2) start with a setting no lower than 100Hz.
(3) Use the same setting on the sub that you use on the AVR for starters.
(1) Because you are using the speaker level connections as well as the line level connections, the AVR "sees" the left and right speakers plus the sub as full-range speakers. "Large" tells the AVR to send all the bass from the left and right channels to the left and right speakers (which incorporate the sub, acting as the bass driver in a full-range "large" speaker).
Setting sub to yes diverts bass below the crossover frequency (from the channels set to "small") to the sub. And it directs the signal from the LFE (".1") channel to the sub as well.
(2) 100 or 120Hz for the PM800 and PC1000. Listen for a seamless blend between subwoofer and other speakers, without the sub calling attention to its location (although this may not be entirely achievable with this class of speakers). Much depends on room acoustics and speaker locations.
(3) When using only the LFE channel connections, you would set the sub's crossover to "off" (or its highest setting) and let the AVR handle this function. It will still do so for LFE channel content, and for redirected bass from the center and surrounds. But the blending of the sub and the left and right channels with bass that belongs to those channels will be handled by the sub's crossover control. A lower setting will put more of the bass into the speakers; a higher setting will put more of it into the sub. You don't want to push the speakers too hard, but you don't want to hear the bass as coming from the sub, so you'll want to experiment and listen.