Difference between revisions of "S1 Pro system Auto EQ"

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The {{S1}} uses an accelerometer<ref>[https://www.livescience.com/40102-accelerometers.html Accelerometer ]</ref> to determine if it is in the tilt-back, horizontal or vertical position. It also has a switch inside the pole cup to determine if it is mounted on a speaker stand.  Based on the orientation and the switch, the {{S1}} automatically applies the correct EQ.
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;Question: What is Auto EQ?
  
If you take a loudspeaker and put it on a speaker stand, then a tabletop, and then on the floor, the sound will change<ref>[https://www.prosoundtraining.com/2011/08/29/how-boundaries-affect-loudspeakers/ How Boundaries Affect Loudspeakers]</ref>. When the speaker is on a tabletop or the floor, it is interacting with the boundaries (tabletop, floor, walls, and ceiling too). This means if you want great sound in all situations you have to EQ the loudspeaker.
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;Auto EQ is a feature of the {{S1}} that optimizes the sound depending on how you use it (on a speaker stand, table top, or the floor).  
  
Bose tuned the S1 Pro to sound great in all four positions (speaker stand, tabletop, floor (both tilt-back and horizontal)) taking into account the boundaries. And the engineers carefully considered how you would be using the S1 Pro. That's why there are two settings for the floor (tilt-back and monitor).
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;The Issue
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:If you take a loudspeaker and put it on a speaker stand, then a tabletop, and then on the floor, the sound will change<ref name="boundaries">[https://www.prosoundtraining.com/2011/08/29/how-boundaries-affect-loudspeakers/ How Boundaries Affect Loudspeakers]</ref>. When the speaker is on a tabletop or the floor, it is interacting with the boundaries (tabletop, floor, walls, and ceiling too). This means if you want great sound in all situations you have to EQ the loudspeaker.
  
If you could put the S1 Pro in a free field<ref>[https://en.wikipedia.org/wiki/Free_field_(acoustics) Free Field]</ref> here's what might hear.
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;The Solution
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:The {{S1}} uses an accelerometer<ref>[https://www.livescience.com/40102-accelerometers.html Accelerometer ]</ref> to determine if it is in the tilt-back, horizontal or vertical position. It also has a switch inside the pole cup to determine if it is mounted on a speaker stand.  Based on the orientation and the switch, the {{S1}} automatically applies the correct EQ.  
  
Using the speaker stand position as a reference:
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:Bose tuned the S1 Pro to sound great in all four positions (speaker stand, tabletop, floor (both tilt-back and horizontal)) taking into account the boundaries. And the engineers carefully considered how you would be using the S1 Pro. That's why there are two settings for the floor (tilt-back and monitor).
  
*    Tabletop: a little less bass than speaker stand
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;What Auto EQ is Doing
*    Tilt-back: a little less bass than Tabletop.
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:If you could put the S1 Pro in a free field<ref>[https://en.wikipedia.org/wiki/Free_field_(acoustics) Free Field]</ref> here's what you will hear.
*    Horizontal: about the same as Tilt-back except there's some EQ treatment to support use as a monitor.
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&rArr; Using the speaker stand position as a reference (basically, flat):
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&rArr; Table top: a little less bass than speaker stand
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[[File:Auto EQ Table.png|640px]]
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&rArr; Tilt-back: a little less bass than Table top.
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[[File:Auto EQ Tilt Back.png|640px]]
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&rArr; Horizontal: about the same as Tilt-back except there's some EQ treatment to support use as a monitor.  
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[[File:Auto EQ Floor Monitor.png|640px]]
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; Can I disable Auto EQ
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: No. The {{S1}} was engineered to sound the same (at a distance) regardless of whether you use on a speaker stand, tabletop or on the floor.
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: Note: The S1 Pro uses an accelerometer to determine if it is in the tilt-back, horizontal, or vertical position. It also has a switch inside the pole cup to determine if it is mounted on a speaker stand. Based on the orientation and the switch, the S1 Pro automatically applies the correct EQ. If you depress the switch the speaker stand EQ is applied regardless of the orientation of the S1 Pro. See [[S1_Pro_system#Pole_Cup_Switch|Pole Cup Switch]]
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<html>
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<iframe width="560" height="315" src="https://www.youtube.com/embed/rsqgYA8A1tU?rel=0" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe></html>
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Related discussion in the Bose Portable PA Community: [https://www.bosepro.community/g/portable/topic/s1-pro-can-i-bypass-the-auto-eq Can I bypass Auto EQ?]
  
 
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[[Category:S1]]
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[[Category:S1 Pro]]

Latest revision as of 21:43, 1 July 2022

Question
What is Auto EQ?
Auto EQ is a feature of the S1 Pro System that optimizes the sound depending on how you use it (on a speaker stand, table top, or the floor).
The Issue
If you take a loudspeaker and put it on a speaker stand, then a tabletop, and then on the floor, the sound will change[1]. When the speaker is on a tabletop or the floor, it is interacting with the boundaries (tabletop, floor, walls, and ceiling too). This means if you want great sound in all situations you have to EQ the loudspeaker.
The Solution
The S1 Pro System uses an accelerometer[2] to determine if it is in the tilt-back, horizontal or vertical position. It also has a switch inside the pole cup to determine if it is mounted on a speaker stand. Based on the orientation and the switch, the S1 Pro System automatically applies the correct EQ.
Bose tuned the S1 Pro to sound great in all four positions (speaker stand, tabletop, floor (both tilt-back and horizontal)) taking into account the boundaries. And the engineers carefully considered how you would be using the S1 Pro. That's why there are two settings for the floor (tilt-back and monitor).
What Auto EQ is Doing
If you could put the S1 Pro in a free field[3] here's what you will hear.

⇒ Using the speaker stand position as a reference (basically, flat):

⇒ Table top: a little less bass than speaker stand

Auto EQ Table.png

⇒ Tilt-back: a little less bass than Table top.

Auto EQ Tilt Back.png

⇒ Horizontal: about the same as Tilt-back except there's some EQ treatment to support use as a monitor.

Auto EQ Floor Monitor.png


Can I disable Auto EQ
No. The S1 Pro System was engineered to sound the same (at a distance) regardless of whether you use on a speaker stand, tabletop or on the floor.
Note: The S1 Pro uses an accelerometer to determine if it is in the tilt-back, horizontal, or vertical position. It also has a switch inside the pole cup to determine if it is mounted on a speaker stand. Based on the orientation and the switch, the S1 Pro automatically applies the correct EQ. If you depress the switch the speaker stand EQ is applied regardless of the orientation of the S1 Pro. See Pole Cup Switch



Related discussion in the Bose Portable PA Community: Can I bypass Auto EQ?