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Re: 1pi or 2pi for surrounds? [message #69498 is a reply to message #69496]

Thu, 15 September 2011 10:25

Wayne Parham
Messages: 18786
Registered: January 2001

Illuminati (33rd Degree)

What I mean is this - Run mains (and surrounds) full range. Flanking subs placed near right/left front mains should be low-passed between 90Hz and 120Hz or so. I prefer a second-order slope for flanking subs, third-order max. Don't use fourth-order if you can help it. The greater the slope, the higher the low-pass cutoff frequency should be. We want a seamless blend. More distant subs should be crossed lower to prevent localization cues, usually around 50Hz or 60Hz works well.

When I talk about flanking subs, I'm always talking about subs that flank the front mains. They smooth the midbass and midrange modes for stereo content. Surrounds generally don't have their own flanking subs. I mean, it wouldn't hurt to have them but I don't see them providing a lot of benefit either. Bass isn't directional, so the subs that are there will provide the foundation. Flanking subs are mostly for modal smoothing and the mere fact that there are so many sound sources in a multichannel system tends to do this anyway.

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[Message index]

		1pi or 2pi for surrounds? By: smokarz on Mon, 08 August 2011 08:52
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Mon, 08 August 2011 11:34
		Re: 1pi or 2pi for surrounds? By: smokarz on Mon, 08 August 2011 11:49
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Mon, 08 August 2011 14:18
		Re: 1pi or 2pi for surrounds? By: smokarz on Mon, 08 August 2011 14:46
		Re: 1pi or 2pi for surrounds? By: justphil on Tue, 09 August 2011 21:40
		Re: 1pi or 2pi for surrounds? By: smokarz on Wed, 10 August 2011 07:52
		Re: 1pi or 2pi for surrounds? By: justphil on Wed, 10 August 2011 08:12
		Re: 1pi or 2pi for surrounds? By: smokarz on Wed, 10 August 2011 09:59
		Re: 1pi or 2pi for surrounds? By: justphil on Wed, 10 August 2011 18:39
		Re: 1pi or 2pi for surrounds? By: smokarz on Tue, 16 August 2011 12:32
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Tue, 16 August 2011 14:52
		Re: 1pi or 2pi for surrounds? By: smokarz on Mon, 22 August 2011 10:02
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Mon, 22 August 2011 10:15
		Re: 1pi or 2pi for surrounds? By: smokarz on Fri, 26 August 2011 12:16
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Fri, 26 August 2011 12:40
		Re: 1pi or 2pi for surrounds? By: smokarz on Fri, 26 August 2011 12:46
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Fri, 26 August 2011 13:29
		Re: 1pi or 2pi for surrounds? By: smokarz on Sat, 27 August 2011 08:26
		Re: 1pi or 2pi for surrounds? By: justphil on Sat, 27 August 2011 08:48
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Sat, 27 August 2011 09:32
		Re: 1pi or 2pi for surrounds? By: smokarz on Sat, 27 August 2011 09:28
		Re: 1pi or 2pi for surrounds? By: smokarz on Sat, 27 August 2011 09:36
		Re: 1pi or 2pi for surrounds? By: justphil on Sat, 27 August 2011 09:53
		Re: 1pi or 2pi for surrounds? By: smokarz on Sat, 27 August 2011 10:27
		Re: 1pi or 2pi for surrounds? By: justphil on Sat, 27 August 2011 10:55
		Re: 1pi or 2pi for surrounds? By: smokarz on Tue, 30 August 2011 21:55
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Tue, 30 August 2011 22:40
		Re: 1pi or 2pi for surrounds? By: smokarz on Wed, 31 August 2011 08:54
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Wed, 31 August 2011 10:52
		Re: 1pi or 2pi for surrounds? By: smokarz on Wed, 31 August 2011 12:20
		Re: 1pi or 2pi for surrounds? By: smokarz on Tue, 06 September 2011 09:05
		Re: 1pi or 2pi for surrounds? By: justphil on Tue, 06 September 2011 09:24
		Re: 1pi or 2pi for surrounds? By: smokarz on Tue, 06 September 2011 10:20
		Re: 1pi or 2pi for surrounds? By: smokarz on Tue, 06 September 2011 12:50
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Tue, 06 September 2011 15:46
		Re: 1pi or 2pi for surrounds? By: smokarz on Tue, 06 September 2011 20:24
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Tue, 06 September 2011 21:42
		Re: 1pi or 2pi for surrounds? By: smokarz on Thu, 08 September 2011 10:10
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Thu, 08 September 2011 11:37
		Re: 1pi or 2pi for surrounds? By: smokarz on Thu, 08 September 2011 15:06
		Re: 1pi or 2pi for surrounds? By: smokarz on Sat, 10 September 2011 11:39
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Sat, 10 September 2011 16:32
		Re: 1pi or 2pi for surrounds? By: smokarz on Mon, 12 September 2011 21:57
		Re: 1pi or 2pi for surrounds? By: jshupe on Wed, 08 January 2014 21:21
		Re: 1pi or 2pi for surrounds? By: smokarz on Mon, 12 September 2011 21:58
		Re: 1pi or 2pi for surrounds? By: smokarz on Mon, 12 September 2011 22:01
		Re: 1pi or 2pi for surrounds? By: justphil on Tue, 13 September 2011 09:36
		Re: 1pi or 2pi for surrounds? By: smokarz on Tue, 13 September 2011 09:57
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Tue, 13 September 2011 10:29
		Re: 1pi or 2pi for surrounds? By: smokarz on Tue, 13 September 2011 10:59
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Tue, 13 September 2011 14:15
		Re: 1pi or 2pi for surrounds? By: smokarz on Tue, 13 September 2011 21:10
		Re: 1pi or 2pi for surrounds? By: smokarz on Wed, 14 September 2011 21:08
		Re: 1pi or 2pi for surrounds? By: smokarz on Wed, 14 September 2011 21:17
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Wed, 14 September 2011 22:10
		Re: 1pi or 2pi for surrounds? By: smokarz on Thu, 15 September 2011 07:39
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Thu, 15 September 2011 07:49
		Re: 1pi or 2pi for surrounds? By: smokarz on Thu, 15 September 2011 08:14
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Thu, 15 September 2011 10:25
		Re: 1pi or 2pi for surrounds? By: smokarz on Thu, 15 September 2011 11:32
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Thu, 15 September 2011 12:35
		Helmholtz frequency of each model By: Wayne Parham on Fri, 16 September 2011 09:41
		Re: 1pi or 2pi for surrounds? By: smokarz on Fri, 16 September 2011 18:16
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Fri, 16 September 2011 19:30
		Re: 1pi or 2pi for surrounds? By: smokarz on Sat, 17 September 2011 08:45
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Sat, 17 September 2011 09:00
		Re: 1pi or 2pi for surrounds? By: smokarz on Sat, 17 September 2011 09:16
		Re: 1pi or 2pi for surrounds? By: Wayne Parham on Sat, 17 September 2011 10:45

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