Originally Posted by ObsceneJesster
My receiver does allow some speakers to be set small and others large. I have always used the small setting for everything though. Are you saying that if I set the towers to large then the crossover I have for the rest of the speakers does not apply to the towers? If I did this, at what point would the receiver stop sending low freaquency to the towers? I know for a fact they cant play 30Hz as well as my sub. Also, do you think the CB-10's could handle a crossover of 60hz? They are used for surrounds and I was thinking that low freaquencies rarely get set to surrounds anyway. Am I right to think that?
Here's my understanding of bass management in receivers that can set speakers to SMALL or LARGE. When setting a speaker to SMALL, the audio stream to that speaker is split in low and high frequency components according to the crossover you specify. The low-frequency component is sent to the subwoofer and the high-frequency is sent to the speaker. This is useful for speakers that have trouble generating good bass. When set to LARGE, the speaker gets the audio stream in its integrality.
This is *on top* of the LFE (low frequency effects) channel (i.e. the .1 in 5.1 or 7.1), which is solely sent to the subwoofer if you have one. So even if you set your speaker to LARGE, the subwoofer will still be used for LFEs.
On some receivers (e.g. Pioneer), you when your speakers are set to LARGE, you can set the subwoofer to YES, NO or PLUS. The PLUS setting takes the low-frequency component of every channel and send it to the subwoofer, regardless of the size setting of the speakers. So even if you have LARGE speakers, the sub is also used for low-freqs other than the LFE channel.
Whether you prefer setting your speakers to SMALL, or to LARGE, or to LARGE + PLUS subwoofer is essentially a question of taste and will depend on the room and receiver also. But with CF-70s, I think I'd use LARGE, and if you have a particularly good sub that you want to hear for music, LARGE + PLUS sub if available on your receiver.
My setup is CB-20 fronts, CB-10 surrounds and a CC-10 center, and the Pionner calibration (MCACC) suggested that all speakers be set to LARGE. This is somewhat surprising, but overall, I like it a lot, altough I decided to use PLUS subwoofer in the end. With the SMALL setting, I think my sub (ESW-C8) sounds mushier than the CB-20s for low-freqs that are not just rumbles.