Stereo / Mono / Distributed Systems - Revision history

ST: /* Mono */

2024-09-21T23:54:03Z

Mono

← Older revision		Revision as of 23:54, 21 September 2024
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	=== Mono ===		=== Mono ===
			; Note :References to the L1 Compact are also applicable to the L1 Pro8

	Question:		Question:
	:I noticed in the {{Compact Owners Guide}} (page 7), there are instructions on how to use more than one Compact to provide additional coverage in larger spaces. This is new. It hasn't been easy to do this with the {{Classic}} / {{Model I}} / {{Model II}}.		:I noticed in the {{Compact Owners Guide}} (page 7), there are instructions on how to use more than one Compact to provide additional coverage in larger spaces. This is new. It hasn't been easy to do this with the {{Classic}} / {{Model I}} / {{Model II}}.
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	* I can't think of a situation like this where you would want to space the {{Compact}}s (or any other {{L1 nl}} system) closer than 20' and thus I see no issue with undesirable [[Multiple Source Interference\|multi-source interference]]. I think that spacing closer to the 50' mark would be more typical in terms of covering large audiences. Said another way, I don't think an {{Compact}} has trouble throwing up to 50'.		* I can't think of a situation like this where you would want to space the {{Compact}}s (or any other {{L1 nl}} system) closer than 20' and thus I see no issue with undesirable [[Multiple Source Interference\|multi-source interference]]. I think that spacing closer to the 50' mark would be more typical in terms of covering large audiences. Said another way, I don't think an {{Compact}} has trouble throwing up to 50'.

	* As said above "The {{Compact}} uses a significantly shorter array than the {{Model I}} or {{Model II}}. As a result, it doesn't project sound as far." Thus, spacing of multiple {{Compact}}s would be somewhat less than the spacing of multiple Model I or Model II systems.		* As said above "The {{Compact}} uses a significantly shorter array than the {{Model I}} or {{Model II}}. As a result, it doesn't project sound as far." Thus, the spacing of multiple {{Compact}}s would be somewhat less than the spacing of multiple Model I or Model II systems.

ST: /* Stereo */

2024-07-20T23:27:20Z

Stereo

← Older revision		Revision as of 23:27, 20 July 2024
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	* There are many reasons a player would want to hear his or her instrument in stereo. Having different sounds come from different directions can be very exciting sonically and I doubt there's much controversy about that.		* There are many reasons a player would want to hear his or her instrument in stereo. Having different sounds come from different directions can be very exciting sonically and I doubt there's much controversy about that.

	* An L1 system can project a wide stereo field on stage and into the audience -- particularly the Model I and ~~the~~ Model II. Because the ~~I and II~~ are essentially 14' line arrays (7' speaker with a 7' mirror image source created by the floor reflection) they project sound at much less loss with distance than a conventional speaker. This has the effect of greatly enhancing the size of the stereo field.		* An L1 system can project a wide stereo field on stage and into the audience -- particularly the L1 Pro32, L1 Model I and L1 Model II. Because the these are essentially 14' line arrays (7' speaker with a 7' mirror image source created by the floor reflection) they project sound at much less loss with distance than a conventional speaker. This has the effect of greatly enhancing the size of the stereo field.

	* It's a mistake to place stereo speakers too closely together. Not only does the area over which listeners hear stereo sound shrink but you can get undesirable interference effects caused when the same (or very nearly the same) signal is played simultaneously through two or more like speakers. (Multi-source interference can cause audible dropouts in tone.)		* It's a mistake to place stereo speakers too closely together. Not only does the area over which listeners hear stereo sound shrink but you can get undesirable interference effects caused when the same (or very nearly the same) signal is played simultaneously through two or more like speakers. (Multi-source interference can cause audible dropouts in tone.)

	* For these reasons, I'd recommend spacing L1 systems used for stereo at least 10' apart. There are competing interests here. A player located too close to one of the L1 systems spaced too far apart won't hear stereo — but his or her audience will. On the other hand, space the L1 systems closer so that the player gets stereo and you won't project stereo to the audience.		* For these reasons, I'd recommend spacing L1 systems used for stereo at least 10' apart. There are competing interests here. A player located too close to one of the L1 systems spaced too far apart won't hear stereo — but his or her audience will. On the other hand, space the L1 systems closer so that the player gets stereo, and you won't project stereo to the audience.

	* A player located roughly between two spaced L1 systems will hear stereo well and many in the audience will too. 10-20' feels good to me for this kind of setup although I don't want to have this come across as more than a rule of thumb.		* A player located roughly between two spaced L1 systems will hear stereo well, and many in the audience will too. 10-20' feels good to me for this kind of setup, although I don't want to have this come across as more than a rule of thumb.

	* The {{Compact}} uses a significantly shorter array than the {{Model I}} or {{Model I}}. As a result, it doesn't project sound as far. Said another way, the level falls off more rapidly with distance on the Compact. As a consequence, the stereo field won't be quite as large. This will translate I think to a smaller stereo sweet area for the player and for the audience. On the other hand, as has recently been pointed out on this forum, a player can buy two L1 Compacts for the price of one L1 Model I and can buy three for the price of a Model II and a T1 ToneMatch engine. For those that value a stereo instrumental sound, experimentation with the various L1 models is encourage.		* The {{Compact}} uses a significantly shorter array than the {{Model I}} or {{Model I}}. As a result, it doesn't project sound as far. Said another way, the level falls off more rapidly with distance on the Compact. As a consequence, the stereo field won't be quite as large. This will translate I think to a smaller stereo sweet area for the player and for the audience. On the other hand, as has recently been pointed out on this forum, a player can buy two L1 Compacts for the price of one L1 Model I and can buy three for the price of a Model II and a T1 ToneMatch engine. For those that value a stereo instrumental sound, experimentation with the various L1 models is encourage.

ST at 19:37, 23 September 2023

2023-09-23T19:37:51Z

← Older revision		Revision as of 19:37, 23 September 2023
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	<div class="tocdiv">~~{{Bose Reviewed}}~~		{{Bose Reviewed}}
			<div class="tocdiv">
	<div>__TOC__</div>		<div>__TOC__</div>
	<div>		<div>

ST at 19:37, 23 September 2023

2023-09-23T19:37:25Z

← Older revision		Revision as of 19:37, 23 September 2023
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	<div class="tocdiv">{{Bose ~~reviewed~~}}		<div class="tocdiv">{{Bose Reviewed}}
	<div>__TOC__</div>		<div>__TOC__</div>
	<div>		<div>

ST at 19:37, 23 September 2023

2023-09-23T19:37:11Z

← Older revision		Revision as of 19:37, 23 September 2023
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	<div class="tocdiv">		<div class="tocdiv">{{Bose reviewed}}
	<div>__TOC__</div>		<div>__TOC__</div>
	<div>		<div>

ST: /* Stereo */

2022-10-16T20:12:52Z

Stereo

← Older revision		Revision as of 20:12, 16 October 2022
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	=== Stereo ===		=== Stereo ===
			The following applies to all L1 and L1 Pro systems
	Question:		Question:
	:The Compact looks really attractive as a lightweight solution for running stereo. Are there any special considerations for doing this? I am looking for differences from the way we might have approached this with the other L1® models		:The Compact looks really attractive as a lightweight solution for running stereo. Are there any special considerations for doing this? I am looking for differences from the way we might have approached this with the other L1® models

	Answer:		Answer:

	Ever since the L1 approach was introduced in 2003, we've had a vibrant discussion here about the subject of instruments that work in stereo -- predominantly keyboards and occasionally guitar (Adrian Belew, Pat Metheny for example).		Ever since the L1 approach was introduced in 2003, we've had a vibrant discussion here about the subject of instruments that work in stereo -- predominantly keyboards and occasionally guitar (Adrian Belew, Pat Metheny for example).

ST: /* Bass Power Alley */

2022-01-13T03:26:40Z

Bass Power Alley

← Older revision		Revision as of 03:26, 13 January 2022
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	Yes, my instincts and experience tell me that this should be true -- say down to 10' -- but I haven't done a clean experiment to prove it to myself, so some caution is advised.		Yes, my instincts and experience tell me that this should be true -- say down to 10' -- but I haven't done a clean experiment to prove it to myself, so some caution is advised.

	And I'll point out that below say 200 Hz, all the L1 systems are essentially omnidirectional and the spacing of 10, 20, or even 30' can create an audible "power alley"<ref>Related reading: [[Media:The-Subwoofer-Power-Alley-1.pdf]]></ref>. Once you get beyond these distances, the balloon animal has so many closely spaced bulges and creases -- even at lower frequencies -- that our ear doesn't hear them individually but rather hears the average. The [[{{PAGENAME}}#Balloon Animal\|balloon animal]] turns into something more like a Japanese fan.		And I'll point out that below say 200 Hz, all the L1 systems are essentially omnidirectional and the spacing of 10, 20, or even 30' can create an audible "power alley"<ref>Related reading: [[Media:The-Subwoofer-Power-Alley-1.pdf]]</ref>. Once you get beyond these distances, the balloon animal has so many closely spaced bulges and creases -- even at lower frequencies -- that our ear doesn't hear them individually but rather hears the average. The [[{{PAGENAME}}#Balloon Animal\|balloon animal]] turns into something more like a Japanese fan.

	[http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/756102391?r=801102491#801102491 Source: Ken-at-Bose]		[http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/756102391?r=801102491#801102491 Source: Ken-at-Bose]

ST: /* Bass Power Alley */

2022-01-13T03:26:00Z

Bass Power Alley

← Older revision		Revision as of 03:26, 13 January 2022
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	Yes, my instincts and experience tell me that this should be true -- say down to 10' -- but I haven't done a clean experiment to prove it to myself, so some caution is advised.		Yes, my instincts and experience tell me that this should be true -- say down to 10' -- but I haven't done a clean experiment to prove it to myself, so some caution is advised.

	And I'll point out that below say 200 Hz, all the L1 systems are essentially omnidirectional and the spacing of 10, 20, or even 30' can create an audible "power alley"<ref>Related reading: [[Media:The-Subwoofer-Power-Alley-1.pdf></ref>. Once you get beyond these distances, the balloon animal has so many closely spaced bulges and creases -- even at lower frequencies -- that our ear doesn't hear them individually but rather hears the average. The [[{{PAGENAME}}#Balloon Animal\|balloon animal]] turns into something more like a Japanese fan.		And I'll point out that below say 200 Hz, all the L1 systems are essentially omnidirectional and the spacing of 10, 20, or even 30' can create an audible "power alley"<ref>Related reading: [[Media:The-Subwoofer-Power-Alley-1.pdf]]></ref>. Once you get beyond these distances, the balloon animal has so many closely spaced bulges and creases -- even at lower frequencies -- that our ear doesn't hear them individually but rather hears the average. The [[{{PAGENAME}}#Balloon Animal\|balloon animal]] turns into something more like a Japanese fan.

	[http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/756102391?r=801102491#801102491 Source: Ken-at-Bose]		[http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/756102391?r=801102491#801102491 Source: Ken-at-Bose]

ST: /* Bass Power Alley */

2022-01-13T03:25:23Z

Bass Power Alley

← Older revision		Revision as of 03:25, 13 January 2022
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	Yes, my instincts and experience tell me that this should be true -- say down to 10' -- but I haven't done a clean experiment to prove it to myself, so some caution is advised.		Yes, my instincts and experience tell me that this should be true -- say down to 10' -- but I haven't done a clean experiment to prove it to myself, so some caution is advised.

	And I'll point out that below say 200 Hz, all the L1 systems are essentially omnidirectional and the spacing of 10, 20, or even 30' can create an audible "power alley". Once you get beyond these distances, the balloon animal has so many closely spaced bulges and creases -- even at lower frequencies -- that our ear doesn't hear them individually but rather hears the average. The [[{{PAGENAME}}#Balloon Animal\|balloon animal]] turns into something more like a Japanese fan.		And I'll point out that below say 200 Hz, all the L1 systems are essentially omnidirectional and the spacing of 10, 20, or even 30' can create an audible "power alley"<ref>Related reading: [[Media:The-Subwoofer-Power-Alley-1.pdf></ref>. Once you get beyond these distances, the balloon animal has so many closely spaced bulges and creases -- even at lower frequencies -- that our ear doesn't hear them individually but rather hears the average. The [[{{PAGENAME}}#Balloon Animal\|balloon animal]] turns into something more like a Japanese fan.

	[http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/756102391?r=801102491#801102491 Source: Ken-at-Bose]		[http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/756102391?r=801102491#801102491 Source: Ken-at-Bose]
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	[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/900104591?r=190102491#190102491 Source: Ken-at-Bose]		[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/900104591?r=190102491#190102491 Source: Ken-at-Bose]


	=== Delay and Mono ===		=== Delay and Mono ===

ST at 03:22, 13 January 2022

2022-01-13T03:22:54Z

← Older revision		Revision as of 03:22, 13 January 2022
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	[http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/756102391?r=801102491#801102491 Source: Ken-at-Bose]		[http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/756102391?r=801102491#801102491 Source: Ken-at-Bose]

	~~=== Delay and Mono ===~~
	~~Question:~~
	~~:Would a few ms delay be enough to avoid the "interference" from dual mono?<br />Do you have a value for the latency when daisy chaining Compacts?~~

	~~Answer:~~

	Pure delay does nothing to fix interference "globally" (I'll explain) but can be used "locally". In this case (L1 systems, spaced, all getting the same signal) I believe delay will turn out to be not useful.

	==== Balloon Animal ====		==== Balloon Animal ====
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	[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/900104591?r=190102491#190102491 Source: Ken-at-Bose]		[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/900104591?r=190102491#190102491 Source: Ken-at-Bose]


			=== Delay and Mono ===
			Question:
			:Would a few ms delay be enough to avoid the "interference" from dual mono?<br />Do you have a value for the latency when daisy chaining Compacts?

			Answer:

			Pure delay does nothing to fix interference "globally" (I'll explain) but can be used "locally". In this case (L1 systems, spaced, all getting the same signal) I believe delay will turn out to be not useful.

	----		----
	[[Category:Stereo]]		[[Category:Stereo]]
	[[Category:Mono]]		[[Category:Mono]]