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marcoblanco
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Jun 20, 2021

Bose s1 pro line out

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Hi, how can I connect 2 bose s1 pro speakers? I want to connect my microphone and guitar so that the sound comes out of the two speakers and I also need to be connected to bluetooh. thanks!

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Fish-54
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Aug 1, 2010

Re: Bose s1 pro line out

Hello marcoblanco,

 

Connect a 1/4" TRS to 1/4" TRS (balanced) cable from the "Line out" jack on the first S1 Pro to one of the input channels on the second S1 Pro.  Turn the volume up on the first unit to suit you, then turn up the volume on the second unit to match.  Turn the ToneMatch setting and reverb off on the second unit; those will pass through from the first.  The volume mix, ToneMatch settings, reverb and Bluetooth from the first S1 Pro will pass to the second.

 

See page 15 of the S1 Pro Owners manual, or this Dual-mono Daisy Chain article.

 

Does that help?

MadCamp
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Jan 19, 2016

Re: Bose s1 pro line out

Understood. So two instruments plugged into one S1 Pro, line out to input on second S1 Pro. Now, I want To add a sub1. How do I do that. (Wanting to avoid an external mixer.) I only have vocals and guitar but need to have work with 2 S1 Pro and one sub1. 
Thanks for any help

Fish-54
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Re: Bose s1 pro line out

Hello MadCamp,

 

You can add a Sub1 to two S1 Pro's in a couple of different configurations:

 

  1. From the first S1 Pro Line Out run a TRS-TRS balanced cable to the second S1 Pro, and from the second S1 Pro Line Out run a TRS-TRS balanced cable to the Sub1 Line Input 1.  You'd set the second S1 Pro's volume as described in the earlier post, noting that it will also affect the Line Out going to the Sub1.  On the Sub1, set the LINE IN EQ to LPF (low pass filter) rather than L1.
  2. From first S1 Pro run a TRS-TRS balanced cable to the Sub1 Line Input 1, then from Sub1 Line Out 1 run a TRS-TRS balanced cable to the second S1 Pro.  The signal coming in to the Sub1's Line Input 1 is passed through to the Line Out 1 with no change in signal strength (the Sub1's Level knob does not affect the output the way the S1 Pro's does.)  I would set the LINE OUT EQ to FULL on the Sub1, so it will pass the incoming EQ as-is through to the second S1 Pro.  Set the LINE IN EQ to LPF (low pass filter) rather than L1.
  3. FYI, there is one other possibility that I do NOT recommend:  Run your guitar and mic to the Sub1's Line Input 1 & 2, then run a TRS-TRS balanced cable from the Line Out 1 & 2 to the first S1 Pro channels 1 & 2; then run a TRS-TRS balanced cable from its Line Out to the second S1 Pro.  The problem with this is that the Line Inputs on the Sub1 are line level, not mic level.  Without a proper preamp, your mic not even come through.  (This is an assumption on my part, as I don't have a Sub1 to test with.)

Personally, I would still recommend using a mixer, for many reasons:

  • You can obtain a quality small 4- to 6-channel mixer for a small investment (less than $100) compared to what you will have spent on the two S1 Pro's and Sub1.  It doesn't have to be a Bose mixer (although the T4s is really nice. 😀)
  • Yes, it's one more piece of gear to lug around, but it allows you to take advantage of the Sub1's high pass filter, which is a big selling point for the Sub1.  You would run from the mixer left and right main outs to the Sub1's Line Input 1 & 2, and from the Line Out 1 to the left S1 Pro and Line Out 2 to the right S1 Pro.  Then engage the HPF on the Sub1's LINE OUT EQ to limit the low frequencies sent to the S1 Pro's.  This greatly improves the S1 Pro's efficiency, as they won't have to work as hard to output the bass which will be carried by the Sub1.  From Page 10 of the Sub1/Sub2 manual:  To engage the HPF in "S1 Pro mode", press and hold the Line Output EQ button for four seconds to enable an EQ specifically optimized for use with an S1 Pro. The HPF LED will illuminate green. To deactivate the S1 Pro EQ, press and hold for four seconds.
  • You can adjust your volume and EQ easily, without having to reach around the rear of the S1 Pro.  Plus, you'll be able to accommodate those "one-off" times when you might have an extra vocalist, guitarist, porchboard, tracks, etc.
  • You don't mention using Bluetooth, but with a mixer you can directly cable your music source to it, get the best audio quality, and not worry about audio dropouts.

Does that help?