L1 Pro Hiss - Revision history

ST at 11:45, 16 May 2026

2026-05-16T11:45:01Z

← Older revision		Revision as of 11:45, 16 May 2026
Line 3:		Line 3:

	;Some people turn up the inputs 1 and 2 with nothing attached and are concerned about hiss from the system.		;Some people turn up the inputs 1 and 2 with nothing attached and are concerned about hiss from the system.

			<details><summary><big>Do NOT turn up the volume with nothing connected to the inputs</big>. The system is not designed to operate this way, and it serves no purpose.</summary>

	:It's not advised to turn up a channel to halfway with nothing plugged into it and NOT mute it. Not with this system, or any PA system. This is not how a PA is used. As has been stated several times on various posts, the Pro32 is a very loud system with an aggressive taper on the first 50% of the volume dial. Digital gain + analog gain working together to provide a smooth taper for mic or line level instruments without having select what type of input source. Noise floor levels are imperceptible when proper gain staging in use, and in the presence of ambient event noise.		:It's not advised to turn up a channel to halfway with nothing plugged into it and NOT mute it. Not with this system, or any PA system. This is not how a PA is used. As has been stated several times on various posts, the Pro32 is a very loud system with an aggressive taper on the first 50% of the volume dial. Digital gain + analog gain working together to provide a smooth taper for mic or line level instruments without having select what type of input source. Noise floor levels are imperceptible when proper gain staging in use, and in the presence of ambient event noise.

	Source: [https://www.facebook.com/groups/BoseL1/posts/10159761707557446/?comment_id=10159762725097446&reply_comment_id=10159763243987446 Craig Small - Bose]		Source: [https://www.facebook.com/groups/BoseL1/posts/10159761707557446/?comment_id=10159762725097446&reply_comment_id=10159763243987446 Craig Small - Bose]
			</details>

	If you turn up an L1 Pro16 channel beyond 1/2 way in a quiet house and relatively no ambient noise: you will hear some noise floor because that setting is LOUD. Do the exact same thing in a club or venue and you will not hear the noise floor. Channels 1 & 2 can accommodate mic level and line level inputs, and do so by intersecting hardware/preamp gain and digital/DSP gain. While no signal is present, you may hear the DSP gain "steps" while increasing or decreasing the volume. But when an audio source is connected, the user hears a smooth, continuous volume taper. This is what matters to the user and to the audience.		If you turn up an L1 Pro16 channel beyond 1/2 way in a quiet house and relatively no ambient noise: you will hear some noise floor because that setting is LOUD. Do the exact same thing in a club or venue and you will not hear the noise floor. Channels 1 & 2 can accommodate mic level and line level inputs, and do so by intersecting hardware/preamp gain and digital/DSP gain. While no signal is present, you may hear the DSP gain "steps" while increasing or decreasing the volume. But when an audio source is connected, the user hears a smooth, continuous volume taper. This is what matters to the user and to the audience.

ST at 11:39, 16 May 2026

2026-05-16T11:39:33Z

← Older revision		Revision as of 11:39, 16 May 2026
Line 2:		Line 2:
	This information applies to all L1 Pro models.		This information applies to all L1 Pro models.

	;Some people turn up the inputs 1 and 2 ~~without~~ nothing attached and are concerned about hiss from the system.		;Some people turn up the inputs 1 and 2 with nothing attached and are concerned about hiss from the system.

	:It's not advised to turn up a channel to halfway with nothing plugged into it and NOT mute it. Not with this system, or any PA system. This is not how a PA is used. As has been stated several times on various posts, the Pro32 is a very loud system with an aggressive taper on the first 50% of the volume dial. Digital gain + analog gain working together to provide a smooth taper for mic or line level instruments without having select what type of input source. Noise floor levels are imperceptible when proper gain staging in use, and in the presence of ambient event noise.		:It's not advised to turn up a channel to halfway with nothing plugged into it and NOT mute it. Not with this system, or any PA system. This is not how a PA is used. As has been stated several times on various posts, the Pro32 is a very loud system with an aggressive taper on the first 50% of the volume dial. Digital gain + analog gain working together to provide a smooth taper for mic or line level instruments without having select what type of input source. Noise floor levels are imperceptible when proper gain staging in use, and in the presence of ambient event noise.

ST at 07:02, 22 February 2026

2026-02-22T07:02:55Z

← Older revision		Revision as of 07:02, 22 February 2026
Line 21:		Line 21:
	{{FAQItem		{{FAQItem
	\|question = I get excessive hiss when connecting the LINE OUT from an L1 Pro to a second L1 Pro with an XLR cable		\|question = I get excessive hiss when connecting the LINE OUT from an L1 Pro to a second L1 Pro with an XLR cable
	\|answer = ~~Use a female XLR from~~ the first L1 Pro to 1/4-inch (6.3mm) Tip-Ring-Sleeve cable ~~to the second L1 Pro Channel 3~~		\|answer = Connect the first L1 Pro LINE OUT to the second L1 Pro Channel 3 input
			The cable: Female XLR to 1/4-inch (6.3mm) Tip-Ring-Sleeve cable
	For more details see [[L1 Pro Daisy Chain]]		For more details see [[L1 Pro Daisy Chain]]
	}}		}}

			{{FAQItem
			\|question = I get excessive hiss when connecting a mixer to the L1 Pro Channels 1 or 2 with an XLR cable
			\|answer = Connect the mixer mono output to the L1 Pro Channel 3 input
			The cable: Female XLR to 1/4-inch (6.3mm) Tip-Ring-Sleeve cable
			For more details see [[Mixer to L1 Pro]]
			}}

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	[[Category:L1 Pro]]		[[Category:L1 Pro]]

ST at 06:56, 22 February 2026

2026-02-22T06:56:55Z

← Older revision		Revision as of 06:56, 22 February 2026
Line 18:		Line 18:

	Source: [https://www.facebook.com/groups/BoseL1/posts/10159761707557446?comment_id=10159762725097446&reply_comment_id=10159764452547446 Craig Small - Bose]		Source: [https://www.facebook.com/groups/BoseL1/posts/10159761707557446?comment_id=10159762725097446&reply_comment_id=10159764452547446 Craig Small - Bose]

			{{FAQItem
			\|question = I get excessive hiss when connecting the LINE OUT from an L1 Pro to a second L1 Pro with an XLR cable
			\|answer = Use a female XLR from the first L1 Pro to 1/4-inch (6.3mm) Tip-Ring-Sleeve cable to the second L1 Pro Channel 3
			For more details see [[L1 Pro Daisy Chain]]
			}}



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	[[Category:L1 Pro]]		[[Category:L1 Pro]]

ST at 01:07, 8 September 2022

2022-09-08T01:07:03Z

← Older revision		Revision as of 01:07, 8 September 2022
Line 7:		Line 7:

	Source: [https://www.facebook.com/groups/BoseL1/posts/10159761707557446/?comment_id=10159762725097446&reply_comment_id=10159763243987446 Craig Small - Bose]		Source: [https://www.facebook.com/groups/BoseL1/posts/10159761707557446/?comment_id=10159762725097446&reply_comment_id=10159763243987446 Craig Small - Bose]

			If you turn up an L1 Pro16 channel beyond 1/2 way in a quiet house and relatively no ambient noise: you will hear some noise floor because that setting is LOUD. Do the exact same thing in a club or venue and you will not hear the noise floor. Channels 1 & 2 can accommodate mic level and line level inputs, and do so by intersecting hardware/preamp gain and digital/DSP gain. While no signal is present, you may hear the DSP gain "steps" while increasing or decreasing the volume. But when an audio source is connected, the user hears a smooth, continuous volume taper. This is what matters to the user and to the audience.

			Source: [https://www.facebook.com/groups/BoseL1/posts/10160533849937446/?comment_id=10160534431292446 Craig Small - Bose]


	;Why doesn't this happen on channel 3?		;Why doesn't this happen on channel 3?

ST at 00:31, 10 May 2022

2022-05-10T00:31:38Z

← Older revision		Revision as of 00:31, 10 May 2022
Line 1:		Line 1:
			{{L1 Pro icon}}
			This information applies to all L1 Pro models.

	;Some people turn up the inputs 1 and 2 without nothing attached and are concerned about hiss from the system.		;Some people turn up the inputs 1 and 2 without nothing attached and are concerned about hiss from the system.

ST at 20:27, 1 July 2021

2021-07-01T20:27:11Z

← Older revision		Revision as of 20:27, 1 July 2021
Line 1:		Line 1:
	Some people turn up the inputs 1 and 2 without nothing attached and are concerned about hiss from the system.		;Some people turn up the inputs 1 and 2 without nothing attached and are concerned about hiss from the system.

	:It's not advised to turn up a channel to halfway with nothing plugged into it and NOT mute it. Not with this system, or any PA system. This is not how a PA is used. As has been stated several times on various posts, the Pro32 is a very loud system with an aggressive taper on the first 50% of the volume dial. Digital gain + analog gain working together to provide a smooth taper for mic or line level instruments without having select what type of input source. Noise floor levels are imperceptible when proper gain staging in use, and in the presence of ambient event noise.		:It's not advised to turn up a channel to halfway with nothing plugged into it and NOT mute it. Not with this system, or any PA system. This is not how a PA is used. As has been stated several times on various posts, the Pro32 is a very loud system with an aggressive taper on the first 50% of the volume dial. Digital gain + analog gain working together to provide a smooth taper for mic or line level instruments without having select what type of input source. Noise floor levels are imperceptible when proper gain staging in use, and in the presence of ambient event noise.

ST: Created page with "Some people turn up the inputs 1 and 2 without nothing attached and are concerned about hiss from the system. :It's not advised to turn up a channel to halfway with nothing p..."

2021-07-01T20:26:53Z

Created page with "Some people turn up the inputs 1 and 2 without nothing attached and are concerned about hiss from the system. :It's not advised to turn up a channel to halfway with nothing p..."

New page

Some people turn up the inputs 1 and 2 without nothing attached and are concerned about hiss from the system.

:It's not advised to turn up a channel to halfway with nothing plugged into it and NOT mute it. Not with this system, or any PA system. This is not how a PA is used. As has been stated several times on various posts, the Pro32 is a very loud system with an aggressive taper on the first 50% of the volume dial. Digital gain + analog gain working together to provide a smooth taper for mic or line level instruments without having select what type of input source. Noise floor levels are imperceptible when proper gain staging in use, and in the presence of ambient event noise.

Source: [https://www.facebook.com/groups/BoseL1/posts/10159761707557446/?comment_id=10159762725097446&reply_comment_id=10159763243987446 Craig Small - Bose]

;Why doesn't this happen on channel 3?

:Channel 3 is purely line level, so it has less gain. If you're running aux out, I'd recommend going into ch 3

Source: [https://www.facebook.com/groups/BoseL1/posts/10159761707557446?comment_id=10159762725097446&reply_comment_id=10159764452547446 Craig Small - Bose]

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[[Category:L1 Pro]]