Thanks for your enthusiasm Wayne.
Quote:
Wayne A. Pflughaupt wrote:
 I notice that both you guys have speakers with good bass extension, so that may account for your preference for a curve that starts lower. Maybe someday if you’re bored you could so some experiment using your surround speakers as mains.  |
I thought of the same thing. Some receivers apply a 2nd order roll-off to the mains that is supposed to sum with the natural roll off of the speakers to create a 4th order high pass. At 80 Hz, my crossover is above the natural roll off of the speakers, and so may tend to over-emphasize the mid bass when combined with a house curve that's too high.
I have my reasons to use an 80 Hz crossover instead of 60 Hz.
- My mains excite a room resonsnce between 90-130 Hz, and this is much tamed by an 80 hz crossover.
- I don't want to low pass the LFE below 80 Hz.
- My surrounds poop out around 100 Hz, and I only have one crossover setting for all "small" speakers.
- I like to unburden the reciever, which is only rated at 115 W/channel.
Pushing the start of the house curve ramp down to the point where the mains naturally rool off seems to result in a much better integration.
Quote:
Wayne A. Pflughaupt wrote:
Second, since I did the subwoofer review, I’ve been theorizing that you get better bass detail when response droops below 25 Hz. Of course, you first have to have some demo material that generates some detail – there are a couple of recommendations in the sub review that I use. Naught, you didn’t mention if your satisfaction with the 20 Hz shelving was as pleasing for music as it is for movies, so I’m still wondering about this one. My subs start dropping naturally at 25 Hz, so I can’t experiment with it myself. |
My sub's last peak is at 17.6 Hz and it's down -6 dB by 16.0 Hz; there really isn't a wide plateau. I think that it sounds better when I don't mess with the natural roll off.
My impression is that the musical information down below 30 Hz is mainly drum pressure. I don't think that what happens below 25 Hz has much impact on musical detail. Can you explain your reasoning?