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Re: 1pi or 2pi for surrounds? [message #69500 is a reply to message #69499]

Thu, 15 September 2011 12:35

Wayne Parham
Messages: 18676
Registered: January 2001

Illuminati (33rd Degree)

For home hifi and home theater, I like running the mains and surrounds full range because of the benefits in the modal region. Blending multiple sound sources smoothes the room modes.

If you were running in a prosound environment, it would be a different story. I wouldn't suggest running mains full range. In that application, you always high-pass the mains where systems are pushed hard, to limit excursion.

Or if you had little bitty mini-monitors using drivers that could easily be overdriven. In that case, you'd want to high-pass them too.

But this just isn't the case for speakers like these used in a home theater. These are efficient speakers designed for high-power use, and you have several of them. The mains carry most of the load, as do the subs. The surrounds don't really do all that much. Even in the occasional full pan to a surround channel, we're still not pushing these too hard. As long as you keep the power below 100 watts, they're fine.

On the other hand, if you have the capability to high-pass at the Helmholtz frequency, that would be a good thing to do. It will limit signals where the woofer is unloaded, and isn't making any sound anyway. But if it isn't possible, don't sweat it. These speakers handle a lot of power, and are efficient enough that they produce a lot of sound. You can easily get over 110dB/M from them, which is plenty for surrounds.

So with all that said, I do not suggest using high-pass - at least not above the Helmholtz frequency - with these speakers. Very little is gained in a home hifi or home theater environment. The benefits of reduced IMD (from high-pass) are far outweighed by the benefits of modal smoothing (by not using high-pass) in this application.

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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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