S1 Pro Bluetooth to one and daisy chain to another volume differences

I’d like to add my noticeable volume difference was when I would Bluetooth music  to one s1 then daisy chain to the other. Using the same exact volume level on the knob, one would be a notch louder. I haven’t experimented after the Bose connect update. Anyone else experience this too?

Original Post

Hi jbarner20,

If I understand what you're experiencing:

  1. You are connecting to the first S1 Pro via Bluetooth.
  2. You are using a hardwired connection from the first S1 Pro Line Out to a second S1 Pro Channel 1 or 2.
  3. The volume controls are not visibly the same to get equal volume.

Is that what you're experiencing? 

If so, this is to be expected. The volume at the Line Out connection from the first S1 Pro is dependent on the volume setting on the input channel (in this case, the Aux input). As you raise the volume control, you are raising the signal level at the Line Out, and this will raise the volume you hear from the second S1 Pro.  To get both S1 Pros at the same volume, you'll have to fine-tune the volume by ear, not your eyes.

If you have both S1 Pro units updated, you can use the Bose Connect App to send the Bluetooth audio to both S1 Pro systems and do away with the hard-wired connection.

ST

ST posted:

Hi jbarner20,

If I understand what you're experiencing:

  1. You are connecting to the first S1 Pro via Bluetooth.
  2. You are using a hardwired connection from the first S1 Pro Line Out to a second S1 Pro Channel 1 or 2.
  3. The volume controls are not visibly the same to get equal volume.

Is that what you're experiencing? 

If so, this is to be expected. The volume at the Line Out connection from the first S1 Pro is dependent on the volume setting on the input channel (in this case, the Aux input). As you raise the volume control, you are raising the signal level at the Line Out, and this will raise the volume you hear from the second S1 Pro.  To get both S1 Pros at the same volume, you'll have to fine-tune the volume by ear, not your eyes.

If you have both S1 Pro units updated, you can use the Bose Connect App to send the Bluetooth audio to both S1 Pro systems and do away with the hard-wired connection.

ST

Ooooo awesome! That makes perfect sense, thank you! Yes I’d fine tune by ear which wasn’t a big problem but I knew it was there. 

While we’re on the subject of a hardwire lineout from one s1, does the auto EQ effect the EQ of the line out as well? I line out to powered subs and again it’s something I haven’t fully 100% experimented with, but I feel like the one time I used a s1 in top of a powered sub in tilt back mode, I had to raise the gain of the sub to match what I’m used to hearing.

Hi jbarner20,

jbarner20 posted:

Ooooo awesome! That makes perfect sense, thank you! Yes I’d fine tune by ear which wasn’t a big problem but I knew it was there. 

Great!

While we’re on the subject of a hardwire lineout from one s1, does the auto EQ effect the EQ of the line out as well?

From the S1 Pro system Owner's Guide (page 9)

Line Output: Use a 1/4" TRS cable to connect the line-level output to the Channel 1 or 2 input of a second SI Pro to create a mono, two-loudspeaker setup.
Note: Line Out is post mix.

I did some testing here. The Line Out is not affected by Auto EQ feature (orientation of the S1 Pro system or pole mount switch). That's good because if it did, you'd end up compounding the effect of the Auto EQ on the second S1 Pro system.

I line out to powered subs and again it’s something I haven’t fully 100% experimented with, but I feel like the one time I used a s1 in top of a powered sub in tilt back mode, I had to raise the gain of the sub to match what I’m used to hearing.

  • Changing the orientation might have changed the phase relationship between the S1 Pro system and the powered sub
    OR
  • When the S1 Pro system is on the floor you have boundary loading. You hear more bass. When you raise it off the floor, you lose that. 

ST

 
  • Changing the orientation might have changed the phase relationship between the S1 Pro system and the powered sub
    OR
  • When the S1 Pro system is on the floor you have boundary loading. You hear more bass. When you raise it off the floor, you lose that. 

 

All makes sense yet again! With the s1 being in tilt mode and it’s bass being lowered and mids and highs being raised, I had to raise the gain on the sub 25% to match what I’m used to because yes I usually do a pole mount. I usually corner load my gear for more bass. Thank you again 

Add Reply

Likes (0)
Having trouble signing in?

We recently updated our sign-in procedure and if you have old sign-in data cached, this can create a problem. Please:

  1. Clear your browser cache and cookies
  2. Then close the browser (not just the window)
  3. Open the browser and try again
Thank you

Please make sure that your profile is up to date
×
×
×
×